Download: SERVICE MANUAL MICRO COMPONENT MD SYSTEM UX-Z7MD TABLE OF CONTENTS No.22003

SERVICE MANUAL MICRO COMPONENT MD SYSTEM UX-Z7MD TABLE OF CONTENTS Important Safety Precautions .2 Disassembly Method .5 Mechanism .19 Adjustment method .37 Description of major ICs .45 No.22003 COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD. 2002/12 SECTION 1 Important Safety Precautions 1.1 Safety Precautions (1) This design of this product contains special hardware and voltmeter. many circuits and components specially for safety purposes. Move the resistor connection to each exposed metal part, For continued protection, no changes should be made to the particularly any exposed metal part hav...
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SERVICE MANUAL MICRO COMPONENT MD SYSTEM UX-Z7MD TABLE OF CONTENTS

Important Safety Precautions .2 Disassembly Method .5 Mechanism .19 Adjustment method .37 Description of major ICs .45

No.22003

COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD. 2002/12,

SECTION 1 Important Safety Precautions

1.1 Safety Precautions (1) This design of this product contains special hardware and voltmeter. many circuits and components specially for safety purposes. Move the resistor connection to each exposed metal part, For continued protection, no changes should be made to the particularly any exposed metal part having a return path to original design unless authorized in writing by the the chassis, and measure the AC voltage across the manufacturer. Replacement parts must be identical to resistor. Now, reverse the plug in the AC outlet and repeat those used in the original circuits. Services should be each measurement. Voltage measured any must not performed by qualified personnel only. exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (2) Alterations of the design or circuitry of the product should (r.m.s.). not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom. (3) Many electrical and mechanical parts in the products have special safety-related characteristics. These characteris- tics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special 1.2 Warning safety characteristics are identified in the Parts List of Service (1) This equipment has been designed and manufactured to Manual. Electrical components having such features are meet international safety standards. identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a sub- (2) It is the legal responsibility of the repairer to ensure thatthese safety standards are maintained. stitute replacement which does not have the same safety characteristics as the recommended replacement parts (3) Repairs must be made in accordance with the relevant shown in the Parts List of Service Manual may create safety standards. shock, fire, or other hazards. (4) It is essential that safety critical components are replaced (4) The leads in the products are routed and dressed with ties, by approved parts. clamps, tubings, barriers and the like to be separated from (5) If mains voltage selector is provided, check setting for lo- live parts, high temperature parts, moving parts and/or cal voltage. sharp edges for the prevention of electric shock and fire 1.3 Caution hazard. When service is required, the original lead routing Burrs formed during molding may be left over on some and dress should be observed, and it should be confirmed parts of the chassis. that they have been returned to normal, after reassembling. Therefore, pay attention to such burrs in the case of pre- (5) Leakage shock hazard testing) forming repair of this system. After reassembling the product, always perform an isolation 1.4 Critical parts for safety check on the exposed metal parts of the product (antenna In regard with component parts appearing on the silk-screen terminals, knobs, metal cabinet, screw heads, headphone printed side (parts side) of the PWB diagrams, the parts that are jack, control shafts, etc.) to be sure the product is safe to printed over with black such as the resistor ( ), diode ( ) operate without danger of electrical shock. and ICP ( ) or identified by the " " mark nearby are critical Do not use a line isolation transformer during this check. for safety. • Plug the AC line cord directly into the AC outlet. Using a When replacing them, be sure to use the parts of the same type "Leakage Current Tester", measure the leakage current and rating as specified by the manufacturer. (Except the JC version) from each exposed metal parts of the cabinet, particu- larly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.). • Alternate check method Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more sensitivity in the following manner. Connect a 1,500 ohm 10W resistor paralleled by a 0.15 µF AC-type capacitor between an exposed metal part and a known good earth ground. Measure the AC voltage across the resistor with the AC, 1.5 Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs. 1.5.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players. Be careful to use proper grounding in the area where repairs are being performed. (1) Ground the workbench Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical pickup) on it. (2) Ground yourself Use an anti-static wrist strap to release any static electricity built up in your body. (3) Handling the optical pickup • In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.) • Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily destroy the laser diode. 1.6 Handling the traverse unit (optical pickup) (1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit. (2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the re- placement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a time when attaching it to the connector. (3) Handle the flexible cable carefully as it may break when subjected to strong force. (4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it. 1.7 Attention when traverse unit is decomposed *Please refer to "Disassembly method" in the text for the CD pickup unit. • Apply solder to the short land before the flexible wire is disconnected from the connector on the CD pickup unit. (If the flexible wire is disconnected without applying solder, the CDpickup may be destroyed by static electricity.) • In the assembly, be sure to remove solder from the short land after connecting the flexible wire., 1.8 Important for laser products (1) CLASS 1 LASER PRODUCT (5) CAUTION : If safety switches malfunction, the laser is able (2) DANGER : Invisible laser radiation when open and inter to function. lock failed or defeated. Avoid direct exposure to beam. (6) CAUTION : Use of controls, adjustments or performance (3) CAUTION : There are no serviceable parts inside the of procedures other than those specified herein may result Laser Unit. Do not disassemble the Laser Unit. Replace in hazardous radiation exposure. the complete Laser Unit if it malfunctions. (4) CAUTION : The compact disc player uses invisible laser CAUTION radiation and is equipped with safety switches which Please use enough caution not to see the beam directly prevent emission of radiation when the drawer is open and or touch it in case of anadjustment or operation check. the safety interlocks have failed or are de feated. It is dangerous to defeat the safety switches. VARNING ADVARSEL Osynlig laserstrålning är denna del är öppnad och spårren är Usynlig laserstråling ved åbning, når sikkerhedsafbrydere er urkopplad. Betrakta ej strålen. ude af funktion. Undgå udsasttelse for stråling. VARO ADVARSEL Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymät- Usynlig laserstråling ved åpning, når sikkerhetsbryteren er tömälle lasersäteilylle. Älä katso säteeseen. avslott. unngå utsettelse for stråling.,

SECTION 2 Disassembly Method

2.1 Main body 2.1.1 Removing the metal cover (See Fig.1 to 3.) (1) Remove the six screws A on the rear part of the main body that attach the metal cover. (2) Remove the two screws B on each side of the main body that attach the metal cover. (3) Lift the rear part of the metal cover upward while releasing the lower sides of the metal cover in the right and left di- rection. The metal cover will be removed. Fig.1 Fig.2 Fig.3, 2.1.2 Removing the CD mechanism assembly (See Fig.4 to 7.) • Prior to this procedure, remove the metal cover. (1) Remove the card wire from the connector CN302 on amp board on the left side of the main body. (2) Remove the three screws C on top of the body that attach the CD mechanism assembly. (3) Lift the CD mechanism assembly upward and move it backward to remove. (4) Remove the card wire from CN606 on CD servo board, on the bottom of the CD mechanism assembly. Fig.4 Fig.5 Fig.6 Fig.7, 2.1.3 Removing the front panel (See Fig.8 to11.) • Prior to this procedure, remove the metal cover and the CD mechanism assembly. (1) Remove the card wire from the connector CN705 on mi- con board, in the center of the right side of the main body. (2) Remove the plastic rivet in the right side of the main body that attaches tuner board. (3) Remove the card wire from the connector CN301 on amp board in the center of the left side of the main body. Remove the card wire from the connector CN704 on mi- con board. Remove the wire from each connector CN703 and CN710 respectively. (4) Remove the card wire from the connector CN452 on FL connection board on top of the main body. (5) Remove the two screws D on the right and left sides of the main body that attach the front panel assembly. (6) Remove the two screws E on the bottom of the main body that attach the front panel assembly. (7) Remove the joint “a” on the bottom of the main body and Fig.10 the joint “b” on the right and left sides respectively by us- ing a screwdriver. Remove the front panel assembly in the front direction. Fig.11 Fig.8 Fig.9, 2.1.4 Removing the tuner board (See Fig.12.) • Prior to this procedure, remove the metal cover. (1) Remove the card wire on the right side of the main body from the connector CN1 on the tuner board. (2) Remove the plastic rivet on the right side of the main body that attaches the tuner board. (3) Remove the two screws F on the rear side of the main body that attach the tuner board. Fig.12 2.1.5 Removing the rear cover (See Fig.13.) • Prior to this procedure, remove the metal cover and the CD mechanism assembly. (1) Remove the two screws F on the rear side of the main body that attach the rear cover. Fig.13 2.1.6 Removing the fan (See Fig.14 to 16.) • Prior to this procedure, remove the metal cover, the CD mech- anism assembly, and the rear cover. (1) Remove the wire from the connector CN603 on the MD connect board in the right side of the main body. (2) Remove the four screws G on the rear side of the main body that attach the fan. (3) Move the fan bracket that attaches the fan from inside the rear panel upward to remove the two fixing points “c”. Fan will be detached at the same time. Notice When attaching the fan, attach the two “e” to the two “d” re- spectively before pressing the fan with fan bracket. Fig.15 Fig.14 Fig.16, 2.1.7 Removing the rear panel (See Fig.17 to 20.) • Prior to this procedure, remove the metal cover, the CD mech- anism assembly, and the rear cover. (1) Remove the wire from the connector CN603 on MD con- nect board on the right side of the main body. (2) Remove the eight screws H and the two screws I on the rear side of the main body that attach the rear panel. (3) Remove the two joint “f” on the right and left bottom of the rear panel. Notice The fan assembly will be kept attached to the rear panel. Fig.19 Fig.20 Fig.17 Fig.18, 2.1.8 Removing the MD mechanism assembly (See Fig.21 and 22.) • Prior to this procedure, remove the metal cover, the CD mech- anism assembly, and the rear cover. (1) Remove the card wire from the connector CN601 on the MD connect board in the rear part of the MD mechanism assembly. (2) Remove the four screws J on the front side and the rear side that attach the MD mechanism assembly. Remove the MD mechanism assembly upward. Fig.21 Fig.22 2.1.9 Removing the headphone board (See Fig.23 and 24.) • Prior to this procedure, remove the metal cover, the CD mech- anism assembly, and the rear cover. (1) Remove the wire from the connector CN101 on the amp board on the left side of the main body. (2) Remove the band that fixes the wire to the amp board. Re- move the wire from the two clamps in the bottom chassis. (3) Remove the screw K on the right side of the main body that attaches the headphone board. Fig.23 Fig.24, 2.1.10 Removing the amp board and heat sink (See Fig.25 and 26.) • Prior to this procedure, remove the metal cover, the CD mech- anism assembly, the front panel assembly, and the rear cover. (1) Remove the wire from the connector CN101 and CN102 on the amp board on the left side of the main body. Re- move the band that fixes the wire. Remove the card wire from the connector CN303. (2) Remove the two screws L that attach the amp board. (3) Pull out and remove the connector CN304 and CN305 on the amp board outward. Remove the two joint “g” that fix the bottom chassis. Notice The heat sink will be kept attached to the amp board. The heat sink can be removed without removing the amp board. (4) Remove the three screws M that attach the heat sink. Fig.25 Fig.26 2.1.11 Removing the MD connect board (See Fig.27.) • Prior to this procedure, remove the metal cover, the CD mech- anism assembly, and the rear cover. (1) Remove the card wire from the connector CN601 on the MD connect board. (2) Remove the two screws N on the rear side of the main body that attach the MD connect board. (3) Pull out the connector CN604 on the MD connect board in the rear direction. Fig.27, 2.1.12 Removing the MD base chassis/the micon board (See Fig.28 to 30.) • Prior to this procedure, remove the metal cover, the CD mech- anism assembly, the front panel assembly, the rear cover, the amp board, and the MD connect board. Notice The MD base chassis/the micon board can be removed with- out removing the MD mechanism assembly. (1) Remove the wire from the micon board connector CN707 in the center of the right side of the main body. Remove the card wire from the connector CN708. (2) Remove the screw O on top of the main body that attaches the MD base chassis. Notice The MD mechanism assembly will be kept attached to the MD base chassis. (3) Remove the two screws P that attach the micon board. Fig.28 Remove the two joint “h” that fix the MD base chassis. Fig.29 Fig.30, 2.1.13 Removing the power trans assembly (See Fig.31 and 32.) • Prior to this procedure, remove the metal cover, the CD mech- anism assembly, the front panel assembly, the rear cover, the amp board, and the MD base chassis. (1) Move the power cord stopper upward from the rear part of the main body to remove. Remove the power supply cord from the connector CN901 on the power trans board. Notice The power cord can be removed without removing the power trans assembly. (2) Remove the four screws Q on top of the main body that at- tach the power trans assembly. Remove the wire from the two clamps on the bottom chassis. Fig.32 Fig.31 2.2 Front panel assembly • Prior to this procedure, remove the metal cover, the CD mech- anism assembly, and the front panel assembly. 2.2.1 Removing the cassette mechanism assembly (See Fig.33 and 34.) (1) Remove the spring that is attached to the cassette door from inside the front panel. (2) Remove the four screws R that attach the cassette mech- anism assembly. Fig.34 Fig.33, 2.2.2 Removing the key board (See Fig.35 to 37.) • Prior to this procedure, remove the cassette mechanism as- sembly. (1) Pull out the volume knob in the front side of the front panel to remove. (2) Remove the five screws S that attach the bracket (1) from inside the front panel. (3) Remove the ten screws T that attach the key board. Fig.35 Fig.36 Fig.37, 2.2.3 Removing the FM connection board (See Fig.38 to 40.) (1) Remove the three screws U and the screw V that attach the bracket (2) from inside the front panel. (2) Remove the card wire from the connector CN451 on the FL connection board. (3) Press the tab in the front panel and the one in joint “i” downward to remove. Pull out the FL connection board to remove. 2.2.4 Removing the drive motor assembly (See Fig.38, 39, and 41.) (1) Remove the three screws U and the screw V that attach the bracket (2) from inside the front panel. (2) Remove the screw W that attaches the drive motor assem- bly. Remove the tab in joint “j” that fixes the front panel. Pull out the drive motor assembly to remove. Fig.40 Fig.41 Fig.38 Fig.39, 2.2.5 Removing the belt/drive motor (See Fig.42.) • Prior to this procedure, remove the drive motor assembly. (1) Remove the belt from the pulley. (2) Remove the two screws X that attach the drive motor. Fig.42 2.2.6 Removing the switch board (See Fig.43 and 44.) • Prior to this procedure, remove the bracket (2) / the drive mo- tor assembly. (1) Remove the card wire from the connector CN451 on FL connection board. (2) Remove the joint “k” by releasing it outward. And then, re- move the joint “l” in the same way. (3) Remove the screw Y that attaches the switch board. Re- move the tab on the joint “m” that fixes the front panel. Fig.43 Fig.44, 2.2.7 Removing the FL display (See Fig.45 to 50.) (1) Remove the four screws Z on the front side of the front panel that attach the case cover. (2) Pull out the FL panel from the bosses of the four joint “n” on the FL display cover. (3) Remove the four screws A’ that attach the FL display cov- er. Remove the card wire from the connector CN671 and CN 672 on the FL connect board inside the FL display cov- er. Fig.48 Fig.45 Fig.46 Fig.47, (4) Remove the two screws B’ on the front side of the FL dis- play cover that attach the FL display. (5) FL board and lens will be detached from the FL display. Fig.49 Fig.50 2.2.8 Removing the FL connect board (See Fig.51.) • Prior to this procedure, remove the FL display cover. (1) Remove the card wire from the connector CN673 on the FL connect board. (2) Remove the two screws C’ that attach the FL connect board. Fig.51,

SECTION 3 Mechanism

3.1 CD Mechanism Assembly 3.1.1 Removing the CL. Base Assembly and Tray (Refer to Figs. 1 to 5.) (1) Remove the two screws A fastening the CL. base assembly from the top of the CD mechanism assembly. (2) Move the CL. base assembly diagonally upwards as indicated by the arrow to release it from the two hooks a. (3) Turn the idle gear in the arrow-marked direction from the upper side of the CD mechanism assembly. Accordingly, the TRAMECHA assembly moves downwards. Note: When drawing out the tray, shift down the TRAMECHA assembly to the position where the tray does not con- tact the T-T assembly of the TRAMECHA assembly. Fig.3 (4) Draw out the tray frontwards for removing it. Note: When reinstalling the tray: • Turn the idle gear so that the part b of the tray gear is positioned in the part c shown in Fig. 4. (Eject posi- tion) • Engage the right and left hooks d and e of the tray with the right and left grooves of the TRAMECHA as- sembly respectively for retaining the tray. Fig.4 Fig.1 Fig.5 Fig.2, 3.1.2 Removing the TRAMECHA Assembly (Refer to Figs. 6 to 9.) • Remove the CL. base assembly and tray. Reference: The TRAMECHA assembly can be removed without removal of the mechanism P.C. board. (1) If the TRAMECHA assembly is lowered and it is located out of the PLAY position, turn the idle gear in the arrow- marked direction so that the hole in the part f of the tray gear meets the hole on the CL. base assembly. (Set the TRAMECHA assembly at the PLAY position.) (2) Remove the three screws B fastening the TRAMECHA assembly and then remove the TRAMECHA assembly upwards from the front side. (3) At the same time, remove the spring from the groove of the CH. base assembly in the part g of the TRAMECHA assembly. Note: When reinstalling the TRAMECHA assembly: • Check to see if the spring is properly engaged with Fig.6 groove of the CH. base assembly in the part g of the TRAMECHA assembly. • After making sure that the three insulators of the TRAMECHA assembly are properly set on the bosses of the L. base assembly's guide, fasten them with the screws. Fig.7 Fig.8 Fig.9, 3.1.3 Removing the Mechanism P.C. Board (Refer to Fig 10.) Reference: The mechanism P.C. board can be removed without removal of the TRAMECHA assembly. Note: Before disconnecting the flexible wire coming from the pickup from the connector, be sure to solder its shorting round. If the flexible wire is connected without soldering, it may cause breakdown of the pickup. (1) Solder the shorting round of the flexible wire connected with the mechanism P.C. board from the back of the mechanism assembly. (2) Disconnect the flexible wire from the connector CN601 on the mechanism P.C. board. (3) Remove the three screws C fastening the mechanism P.C. board. (4) Unsolder the two points of the part h and one point of the part i of the mechanism P.C. board. Then, remove the mechanism P.C. board upwards. Note: When reinstalling the mechanism P.C. board, connect the flex- ible wire coming from the pickup to the connector first and then remove the solder from the shorting round of the flexible cable. Fig.10, 3.1.4 Removing the Pickup(Refer to Figs. 11 to 14.) • Remove the CL. base assembly and tray. • Remove the TRAMECHA assembly. Reference: The pickup can be removed without removal of the mecha- nism P.C. board. Note: Before disconnecting the flexible wire coming from the pickup from the connector, be sure to solder its shorting round. If the flexible wire is connected without soldering, it may cause breakdown of the pickup. (1) Solder the shorting round of the flexible wire connected with the mechanism P.C. board from the back of the TRAMECHA assembly. (2) Disconnect the flexible wire from the connector CN601 on Fig.11 the mechanism P.C. board. (3) Turn the idle gear in the arrow-marked direction from the top of the TRAMECHA assembly so that the pickup assembly is shifted to the reverse side of the T-T assembly. Move the pickup assembly until the part j of the rack plate in the lower part of the pickup assembly comes out of the CH. base assembly. (4) Remove the two screws D retaining the shaft of the pickup assembly. Next, disengage the hook k from the CH. base assembly and then remove the pickup assembly together with the shaft. (5) Pull the shaft out of the pickup. (6) Remove the two screws E fastening the rack plate from the pickup. (7) Remove the screw F retaining the P.S. spring from the pickup. Fig.12 Fig.13 Fig.14, 3.1.5 Reinstalling the Pickup Assembly 3.1.6 Removing the Feed Motor Assembly (Refer to Figs. 15 and 16.) (Refer to Fig. 17.) Reference: • Remove the CL. base assembly and tray. Refer to the explanation of "Removing the Pickup" on the • Remove the mechanism P.C. board. preceding page. Remove the two screws E fastening the feed motor assembly (1) Fit the P.S. spring and rack plate to the pickup. from the top of the mechanism assembly. (2) Insert the shaft into the pickup. (3) Engage the hook k of the pickup assembly with the CH. base assembly first, and set the part j of the rack plate in the opening I next. Then, reinstall the pickup assembly while shifting it to the T-T side (inward) so that the part m of the rack plate is positioned as shown in Fig. 16. (4) Move the pickup assembly to the center position and fasten the shaft with the two screws D. (Make sure that the part n of the rack plate is correctly engaged with the middle gear.) (5) After passing the flexible wire coming from the pickup through the opening of the CH. base assembly, connect it to the connector CN601. Note: When reinstalling the pickup assembly, remove the sol- der from the shorting round after connecting the flexible wire coming from the pick to the connector CN601. Fig.17 Fig.15 Fig.16, 3.2 MD mechanism assembly 3.2.2 Removing the mechanism cover 3.2.1 Removing the main board (See Fig.3) (See Fig.1 and 2) (1) Remove the four screws B on both sides of the body. (1) Turn over the body and disconnect the card wire from con- (2) Move the mechanism cover toward the front to disengage nector CN408 and the flexible wire from CN407 on the the front hook of the mechanism cover from the internal main board. loading assembly (Joint c). Then remove the mechanism (2) Remove the two screws A attaching the main board. Slide cover upward. the main board in the direction of the arrow to release the two joints a with the single flame. (3) Solder part b on the pickup in the body. Disconnect the flexible harness from connector CN321 and CN451 on the underside of the main board. Then remove the main board. Fig.3 Fig.1 Fig.2, 3.2.3 Removing the head lifter (See Fig.4 to 6) (1) Move the head lifter on top of the body in the direction of the arrow and turn around. (2) Detach the spring from the hook of the body. Remove the head lifter with the spring. (3) If necessary, remove the spring from the head lifter. Fig.4,5,6 3.2.4 Removing the head assembly (See Fig.7) (1) Remove the screw C on the upper side of the body. Remove the head assembly while pulling the flexible har- ness from the body. Fig.7, 3.2.5 Removing the Loading assembly (See Fig.8 and 9) Ref: The loading assembly, the traverse mechanism assembly and the single flame will be removable after removing the loading assembly from the body. • Prior to performing the following procedure, remove the main board, the mechanism cover, the head lifter and the head as- sembly. (1) Remove the three screws D on the upper side of the body. (2) Move the loading assembly forward to disengage it from the traverse mechanism assembly (Joint d). Then remove it upward. (3) Remove the traverse mechanism assembly from the sin- gle flame. Fig.8 Fig.9, 3.2.6 Loading assembly 3.2.6.1 Removing the slide base (L) / (R) (See Fig.10) (1) Remove the two screws E on the upper side of the loading assembly. (2) Remove the slide base (L) outward. (Release it from the joint bosses E.) (3) Remove the slide base (R) outward. Fig.10 3.2.6.2 Removing the loading mechanism assembly (See Fig.11) (1) Detach the loading mechanism assembly upward to re- lease the four pins on both sides from the loading motor, paying attention to the part e of the loading mechanism base. Fig.11 3.2.7 Loading mechanism assembly 3.2.7.1 Removing the loading motor (See Fig.12 and 13) (1) Disconnect the harnesses from the wire holder and from connector CN612 on the cam switch board. (2) Remove the screw F attaching the loading motor and re- lease the joint f. (3) Remove the belt from the loading motor assembly. (4) Remove the two screws G attaching the loading motor. 3.2.7.2 Removing the cam gear and the cam switch board (See Fig.12) (1) Remove the slit washer attaching the cam gear and pull out the cam gear. (2) Disconnect the harness from the wire holder and from con- nector CN612 on the cam switch board. (3) Remove the two screws H and the clamp. Remove the cam switch board. Fig.12 Fig.13, 3.2.7.3 Removing the cartridge holder assembly (See Fig.14 and 15) (1) Remove the two screws I on the upper side of the loading assembly. Fig.14 3.2.7.4 Removing the slide bar and the eject bar (See Fig.14 and 15) • Prior to performing the following procedure, remove the car- tridge holder assembly. (1) Remove the slide bar upward. (2) Move the eject bar outward until it stops as shown in Fig.14. Push the convex part g on the bottom of the body and remove the eject bar from the chassis. Fig.15, 3.2.8 Traverse mechanism assembly 3.2.8.1 Removing the Insulators (See Fig.16) (1) Disengage the four insulators from the notches of the traverse mechanism chassis. Fig.16 3.2.8.2 Removing the pickup unit (See Fig.17) (1) Turn over the traverse mechanism assembly and remove the screw J attaching the shaft holder (F). (2) Move the shaft inward and remove it from the shaft holder (R). (3) Detach the shaft side of the pickup unit upward and re- lease the joint h with the pickup guide. Then remove the pickup unit with the shaft. Fig.17 3.2.8.3 Removing the pickup (See Fig.18) (1) Draw out the shaft from the pickup. (2) Remove the two screws K attaching the rack spring. Fig.18, 3.2.8.4 Removing the feed motor assembly (See Fig.15, 20) • It is not necessary to remove the pickup unit. (1) For the white and black harnesses extending from the feed motor assembly, unsolder the soldering i on the traverse mechanism board. (2) Remove the two screws L attaching the feed motor as- sembly. (3) Remove the two screws N attaching the feed motor brack- et. 3.2.8.5 Removing the traverse mechanism board (See Fig.19) • Prior to performing procedure, remove the feed motor assem- bly. (1) For the red and black harnesses extending from the spin- dle motor, unsolder the soldering j on the traverse mecha- nism board. (2) Remove the screw M attaching the traverse mechanism Fig.19 board. Fig.20, 3.2.9 Reattaching the loading assembly (1) Reattach the eject bar to the UD base. (Fig.15 and 21) (2) Reattach the slide bar to the loading mechanism chassis while fitting the boss marked k to the eject bar slot. (Fig.21) (3) Slide the slide bar and the eject bar in the direction of the arrow in Fig.20 and reattach the cartridge holder assembly using the two screws I. (Fig.21 and 22) ATTENTION: Make sure the pin of the eject lever marked l is fitted to the slot of the eject bar marked m at the bottom of the loading mech- anism chassis after moving the eject lever and the loading slider of the cartridge holder assembly in the direction of the arrow. (Refer to Fig.22) Fig.21 Fig.22, (4) Reattach the wire holder to the UD base while engaging the UD base hook marked u to the wire holder slot marked t (At the same time, the boss on the reverse side of the wire holder is fitted to the UD base round hole). (5) Reattach the cam switch board using the two screws H. (Fig.23) (6) Turn the cam switch to bring the boss to the point marked on the cam switch board. Reattach the cam gear using a slit washer while fitting the cam gear slot to the cam switch boss. (Fig.23) ATTENTION: When reattaching the cam gear, the cam switch boss should be fitted to the cam gear slot, and the triangle mark of the cam gear should be aligned to the hole of the eject bar as shown in Fig.23. (7) Reattach the loading motor assembly, using the screw F. Connect the harness extending from the loading motor to connector CN612 on the switch board and fix it with the wire holder. (Fig.23) Fig.23, (8) Reattach the UD base while engaging the four pins on both sides of the UD base to the notches of the loading mechanism base and placing the edge (marked e’) of the cartridge holder assembly under the hook e of the loading mechanism base. (Fig.24) Fig.26 (10) Reattach the slide base (L) on the slide base (R) while fit- ting the two pins on another side of the UD base to the slots of the slide base (L) (Fig.26). Make sure the two slots of the slide base (L) are fitted to the two bosses marked E’ and tighten the two screws E. (Fig.27) Fig.24 (9) Reattach the slide base (R) while fitting the two pins on an- other side of the UD base to the slots of the slide base (R). (Fig.25) Fig.27 Ref: To expedite the work, bring up the UD base slightly when fitting each pin to the appropriate notch. Fig.25 ATTENTION: Fit the part v of the slide base (R) to the part w on the inward side of the cam gear rib. (Fig.26), 3.3 Cassette mechanism section 3.3.1 Removing the playback / recording & eraser head (See Fig. 1 to 3) (1) While shifting the trigger arms seen on the right side of the head mount in the arrow direction, turn the flywheel R in counterclockwise direction until the head mount has gone out with a click (See Fig. 1). (2) When the flywheel R is rotated in counterclockwise direc- tion, the playback / recording & eraser head will be turned in counterclockwise direction from the position in Fig. 2 to that in Fig. 3. (3) At this position, disconnect the flexible P.C. board (outgo- ing from the playback / recording & eraser head) from the connector CN31 on the head amplifier & mechanism con- trol P.C. board. (4) Remove the flexible P.C. board from the chassis base. (5) Remove the spring 1 from behind the playback / recording & eraser head. Fig.1 (6) Loosen the reversing azimuth screw retaining the play- back / recording & eraser head. (7) Take out the playback / recording & eraser head from the front of the head mount. (8) The playback / recoring & eraser head should also be re- moved similarly according to steps 1 to 7 above. 3.3.2 Reassembling the playback / recording & eraser head (See Fig.3) (1) Reassemble the playback head from the front of the head mount to the position as shown in Fig. 3. (2) Fix the reversing azimuth screw. (3) Set the spring 1 from behind the playback / recording & eraser head.Attach the flexible P.C. board to the chassis base, as shown in Fig. 3. (4) Attach the flexible P.C. board to the chassis base, as Fig.2 shown in Fig. 3. (5) The playback / recording & eraser head should also be re- assembled similarly to step 1 to 4 above. Fig.3, 3.3.3 Removing the head amplifier & mechanism control 3.3.4 Removing the main motor assembly board (1) Remove the two screws B retaining the main motor as- (See Fig. 4) sembly (See Fig. 4 and 5). (1) Remove the cassette mechanism assembly. (2) While raising the main motor, remove the capstan belt (2) After turning over th cassette mechanism assembly, re- from the motor pulley (See Fig. 5). move the three screws A retaining the head amplifier & CAUTION: mechanism control board. Be sure to handle the capstan belt so carefully that this (3) Disconnect the connector CN32 on the board including the belt will not be stained by grease and other foreign mat- connector CN 1 on the reel pulse P.C. board. ter. Moreover, this belt should be hanged while referring (4) When necessary, remove the 4 pin parallel wire soldered to the capstan belt hanging method in Fig. 5 and 6. to the main motor. Fig.5 Fig.4 Fig.6 Fig.7, 3.3.5 Removing the flywheel (See Fig. 8 and 9) (1) Remove the head amplifier & mechanism control P.C. board. (2) Remove the main motor assembly. (3) After turning over the cassette mechanism, remove the two slit washers 1 and fixing the capstan shafts R and L, and pull out the flywheel R and L respectively from behind the cassette mechanism. Fig.8 Fig.9 3.3.6 Removing the reel pulse P.C. board and solenoid (See Fig. 10) (1) Remove the five pawls a to e reattaining the reel pulse board. (2) From the surface of the reel pulse board parts, remove the two pawls f and g retaining the solenoid. Fig.10,

SECTION 4 Adjustment method

4.1 MD adjustment(Auto adjust), 4.2 Cassette adjustment 4.2.1 Cassette mechanism section 4.2.2 Cassette mechanism section (Back side) 4.2.3 Cassette AMP board, 4.2.4 Tape Recorder Section Items Measurement conditions Measurement method Standard Values Adjusting positions Confirmation of Test tape 1 Playback the test tape VT703L (8kHz) Maximum output Adjust the head head angle : VT703L (8kHz) 2 With the recording & playback mechanism, azimuth screw only Measurement output adjust the head azimuth screw so that the for- when the head has terminal ward and reverse output levels become max- been changed. : Speaker terminal imum. After adjustment lock the head azimuth Speaker R at least by half turn. (Load resistance: 4 ) 3 In either case this adjustment should be per- : Headphone terminal formed in both the forward and reverse direc- tions with the head azimuth screw. Confirmation of Test tape Adjust VR37 so that the frequency counter read- Tape speed VR37 tape speed : VT712 (3kHz) ing becomes 2,940~3,090Hz when playing of deck Measurement output back the test tape VT712 (3kHz) with playback : 2,940 ~ 3,090Hz terminal and recording mechanism after ending forward : Headphone terminal winding of the tape. 4.2.5 Reference Values for Confirmation Items Items Measurement conditions Measurement method Standard Values Adjusting positions Difference Test tape When the test tape VT712 (3kHz) has been 6.0Hz or less Head azimuth screw between the : VT712 (3kHz) played back with the recording and playback forward and Measurement output mechanism at the beginning of forward winding, reverse speed terminal the frequency counter reading of the difference : Speaker terminal between both of the mechanism should be Speaker R 6.0Hz or less. (Load resistance: 4 ) Measurement output terminal : Headphone Wow & flutter Test tape When the test tape VT712 (3kHz) has been 0.25% or less : VT712 (3kHz) played back with the recording and playback (WRMS) Measurement output mechanism at the beginning of forward winding, terminal the frequency counter reading of wow & flutter : Headphone terminal should be 0.25% or less (WRMS)., 4.2.6 Electrical Performance Items Measurement conditions Measurement method Standard Values Adjusting positions Adjustment of Mode 1 With the recording and playback mechanism AC-225 VR31 recording bias : Forward or reverse load the test tapes(AC-514 to TYPE and : 4.20µA current mode AC-225 to TYPE ), and set the mechanism to AC-514 (Reference • Recording mode the recording and pausing condition in ad- : 4.0µA Value) • Test tape vance. : AC-514 to TYPE and 2 After connecting 100 in series to the record- AC-225 to TYPE er head measure the bias current with a valve Measurement output voltmeter at both of the terminals. terminal 3 After resetting the [PAUSE] mode start record- : Both recording and ing. At this time adjust VR31 for Lch and VR32 headphone terminals for Rch so that the recording bias current val- ues become 4.0µA (TYPE ) and 4.20µA (TYPE ). Adjustment of Reference frequency 1 With the recording and playback mechanism Output deviation VR31 recording and : 1kHz and 10kHz load the test tapes (AC-514 to TYPE ), and between playback (REF.: -20dB) set the mechanism to the recording and paus- 1kHz and 10kHz frequency Test tape ing condition in advance. : -1dB 2dB characteristics : AC-514 to TYPE 2 While repetitively inputting the reference fre- Measurement input quency signal of 1kHz and 10kHz from OSC terminal IN record and playback the rape. : OSC IN 3 While recording and playback the test tape in TYPE ,adjust VR31 for Lch and VR32 for Rch so that the output deviation between 1kHz and 10kHz becomes -1dB 2dB. 4.2.7 Reference Values for Electrical Function Confirmation Items Items Measurement conditions Measurement method Standard Values Adjusting positions Recording Forward or reverse 1 While changing over to and from BIAS 1 and 2 100 kHz bias frequency • Test tape , confirm that the frequency is changed. 6 kHz : TYPE (AC-514) 2 With the recording and playback mechanism Measurement terminal load the test tape. : BIAS TP on P.C. board (AC-514 to TYPE ), and set the mechanism to the recording and pausing condition in ad- vance. 3 Confirm that the BIAS TP frequency on the P.C. board is 100kHz 6kHz. Eraser current Forward or reverse 1 While recording and playback mechanism, TYPE (Reference • Recording mode load the test tapes (AC-514 to TYPE and : 120 mA value) • Test tape AC-225 to TYPE ), and set the mechanism to TYPE : AC-514 to TYPE the recording and pausing conditions in ad- : 75 mA and AC-225 to TYPE vance. Measurement terminal 2 After setting to the recording conditions, con- : Both of the eraser nect 1W in series to the eraser head on con- head terminals nect 1W in series to the eraser head on the recording and playback mechanism side and measure the eraser current from both of the eraser terminals., 4.3 Flow of functional operation until TOC read, 4.4 Maintenance of laser pickup 4.5 Replacement of laser pickup (1) Cleaning the pick up lens Before you replace the pick up, please try to clean the lens with a alcohol soaked cotton swab. (2) Life of the laser diode When the life of the laser diode has expired, the following symptoms will appear. 1.The level of RF output (EFM output : ampli tude of eye pattern) will below. (3) Semi-fixed resistor on the APC PC board The semi-fixed resistor on the APC printed circuit board which is attached to the pickup is used to adjust the laser power. Since this adjustment should be performed to match the characteristics of the whole optical block, do not touch the semi-fixed resistor. If the laser power is lower than the specified value, the la- ser diode is almost worn out, and the laser pickup should be replaced. If the semi-fixed resistor is adjusted while the pickup is functioning normally, the laser pickup may be damaged due to excessive current.,

SECTION 5 Description of major ICs

5.1 AK4519VF-X (IC480) : A / D D / A converter • Pin layout • Block diagram • Pin Function Pin No. Symbol I/O Function 1 VRDA I Voltage Reference Input Pin for DAC, VA 2 VRAD I Voltage Reference Input Pin for ADC, VA 3 AINR I RCH Analog Input Pin 4 VCMR O Rch Common Voltage Output Pin, 0.45xVA 5 VCML O Lch Common Voltage Output Pin, 0.45xVA 6 AINL I Lch Analog Input Pin 7 PWAD I ADC Power-Down Mode Pin "L":Power Down 8 PWDA I DAC Power-Down Mode Pin "L":Power Down 9 MCLK I Master Clock Input Pin 10 LRCK I Input/Output Channel Clock Pin 11 SCLK I Audio Serial Data Clock Pin 12 SDTO O Audio Serial Data Output Pin 13 DGND - Digital Ground Pin 14 VD - Digital Power Supply Pin 15 SDTI I Audio Serial Data Input Pin 16 CMODE I Master Clock Select Pin 17 DEM1 I De-emphasis Frequency Select Pin 18 DEM0 I De-emphasis Frequency Select Pin 19 AOUTL O Lch Analog Output Pin 20 AOUTR O Rch Analog Output Pin 21 VCOM O Common Voltage Output Pin, 0.45xVA 22 AGND - Analog Ground Pin 23 VB - Substrate Pin 24 VA - Analog Power Supply Pin, 5.2 AN22000A-W (IC601) : RF head amp. • Pin layout • Block diagram • Pin function Pin Pin No. Function No. Function 1 APC amp input terminal. 17 VREF output terminal. 2 APC amp output terminal. 18 VDET output terminal. 3 Power supply. 19 VDET input terminal. 4 RF amp negative input terminal. 20 TE amp. output terminal. 5 RF amp output terminal. 21 TE amp. negative input terminal. 6 AGC input terminal. 22 FE amp. negative input terminal. 7 AGC loop filter capacitor connection terminal. 23 FE amp. output terminal. 8 AGC output terminal. 24 GCTL & APC terminal. 9 Capacitor connection terminal for HPF-amp. 25 FBAL control terminal. 10 3TENV output terminal. 26 TBAL control terminal. 11 Capacitor connection terminal for RF enberope detection. 27 Tracking signal input terminal 1. 12 BDO output terminal. 28 Tracking signal input terminal 2. 13 Capacitor connection terminal for RF enverope detection. 29 Focus signal input terminal 4. 14 OFTR output terminal. 30 Focus signal input terminal 3. 15 NRDET output terminal. 31 Focus signal input terminal 2. 16 Ground terminal. 32 Focus signal input terminal 1., 5.3 AN7317 (IC32) : R / P amp. • Pin layout & block diagram • Pin functions Pin No. Function 1 Channel 1 playback amplifier input 2 Channel 1 playback amplifier negative feedback 3 Channel 1 playback amplifier output 4 Channel 1 record amplifier input 5 Channel 1 record amplifier output 6 ALC low-cut 7 ALC time 8 Ground 9 Vcc 10 Ripple filter 11 Record-Amplifier mute 12 Channel 2 record amplifier output 13 Channel 2 record amplifier input 14 Channel 2 playback amplifier output 15 Channel 2 playback amplifier negative feedback 16 Channel 2 playback amplifier input 5.4 BU4094BCF-X (IC33) : Shift / store registor • Pin layout • Block diagram, 5.5 MN662790RSC(IC651):Digital servo & processor • Pin layout • Pin function Pin No. Symbol I/O Description 1 BCLK O Bit clock output for SRDATA 2 LRCK O Identifying signal output of L,R 3 SRDATA O Serial data output 4 DVDD1 - Power supply for digital circuit 5 DVSS1 - Connect to ground for digital circuit 6 TX O Digital audio interface output signal 7 MCLK I Micom command clock signal input 8 MDATA I Micom command data signal input 9 MLD I Micom command load signal input L:load 10 SENSE - Non connect 11 FLOCK - Non connect 12 TLOCK - Non connect 13 BLKCK O Sub code block clock signal (Command execution : CD-TEXT data readout enabling signal (DQSY) output) 14 SQCK I Export clock signal input for sub code Q resister 15 SUBQ O Sub code Q data output 16 DMUTE I Muting input H:muting 17 STAT O Status signal output 18 LSI_RST I Reset signal input L:reset 19 SMCK O Clock signal output MSEL is H : 8.4672 MHz MSEL is L : 4.2336 MHz 20 CSEL I Oscillation frequency specification terminal H:33.8688 MHz L:16.9344 MHz 21 TEST2 - TEST2 terminal usually : open 22 TVD O Traverse drive output 23 PC - Non connect 24 ECM O Spindle motor drive signal output (Compulsion mode output) 25 ECS O Spindle motor drive signal output (Servo error signal output) 26 VDETMON - Non connect 27 TRD O Tracking drive signal output 28 FOD O Focus drive signal output 29 VREF - Reference voltage for DA output section 30 FBAL O Focus balance adjust signal output 31 TBAL O Tracking balance adjust signal output 32 FE I Focus error signal input (analog input) 33 TE I Tracking error signal input (analog input) 34 RFENV I RF Envelope signal input (analog input) 35 TEST3 I TEST3 Terminal usually : Fixation L 36 OFT I Off track signal input H : off track 37 TRCRS I Track cross signal input (analog input) 38 RFDET I RF detection signal input L : detection 39 BDO I Dropout signal input H : dropout, Pin No. Symbol I/O Description 40 LDON I Non connect 41 PLLF2 I/O Terminal for loop filter characteristic switch for PLL 42 DSLBDA - Non connect 43 WVEL - Non connect 44 ARF I RF Signal output 45 IREF I Standard electric current input terminal 46 DRF I Bias terminal for DSL 47 DSLF I/O Loop filter terminal for DSL 48 PLLF I/O Loop filter terminal for PLL 49 VCOF I/O Loop filter terminal for VCO 50 AVDD2 - Power supply terminal for analog circuit 51 AVSS2 - Connect to ground terminal for analog circuit 52 EFM - Non connect 53 DSLB O PLL extraction clock output 54 VCOF2 I/O Loop filter terminal for VCO 55 SUBC O Sub code serial output 56 SBCK I Clock signal input for sub code serial output 57 VSS - Connect to ground terminal for oscillation circuit 58 X1 I Oscillation circuit input terminal f=16.9344 MHz,33.8688 MHz 59 X2 O Oscillation circuit output terminal f=16.9344 MHz,33.8688 MHz 60 VDD - Power supply terminal for oscillation circuit 61 BYTCK - Non connect 62 LDON O Laser ON signal output H : ON 63 GCTRL O General I/O port 64 IPFLA - Non connect 65 FLAG O Flag signal output 66 CLVS - Non connect 67 CRC - Non connect 68 DEMPH O De-emphasis detection signal output 69 RESY - Non connect 70 IOSEL I Mode switch terminal 71 TEST I TEST terminal usually : H 72 AVDD1 - Power supply terminal for analog circuit (for audio output section) 73 OUTL O Lch audio output 74 AVSS1 - Connect to ground terminal for analog circuit (for audio output section) 75 OUTR O Rch audio output 76 DQSY I RF signal polarity specification terminal 77 VCC5V - Power supply terminal (5V) 78 PSEL O IOSEL=H TEST terminal IOSEL=L SRDATA input 79 MSEL O IOSEL=H SMCK terminal output (frequency switch terminal) IOSEL=L LRCK input 80 SSEL O IOSEL=H SUBQ terminal output mode switch terminal IOSEL=L BCLK input, 5.6 XC62HR3502P-X (IC291) : Regulator • Pin layout • Block diagram • Pin function Pin No. Symbol Function 1 VSS Ground 2 VIN Supply voltage input 3 CE Chip enable 4 NC Non connect 5 VOUT Regulated output voltage 5.7 GM71VS17400CLT5 (IC390,IC790) : DRAM • Pin layout • Pin function Pin No. Symbol Function 1 Vcc Power supply (+3.3V) 2 I/O1 Date input/output 3 I/O2 Date input/output 4 WE Read/write enable 5 RAS Addres stroke 6 A11 Addres input 7 - Not use 8 A10 Address input 9~12 A0~A3 Address input 13 Vcc Power supply (+3.3V) 14 Vss GND 15~19 A4~A8 Addres input 20 - Not use 21 A9 Address input 22 OE Output enable 23 CAS Calum address stroke 24 I/O3 Date input/output 25 I/O4 Date input/output 26 Vss GND, 5.8 GP1UM261XK (IC602) : Receiver • Pin layout • Block diagram 5.9 M63008FP-X (IC604) : 5ch Actuator driver • Pin layout • Block diagram, 5.10 BA3126N(IC31) : R/P Switch 5.11 BR93LC66F-X (IC403):EEPROM • Terminal layout • Pin Functions Symbol I/O Function VCC - Power supply GND - Connect to GND CS I Chip select input SK I Serial clock input DI I Start bit, OP-code,address, serial data input DO O Serial data outputInternal state display output of READY/BUSY 5.12 CXA2523AR (IC300) : MD servo • Block diagram, • Pin function Pin No. Symbol I/O Function1III-V converted RF signal I input. 2JII-V converted RF signal J input. 3 VC O Vcc/2 voltage output. 4AIAcurrent input for main beam servo signal. 5BIBcurrent input for main beam servo signal. 6CICcurrent input for main beam servo signal. 7DIDcurrent input for main beam servo signal. 8EIEcurrent input for side beam servo signal. 9FIFcurrent input for side beam servo signal. 10 PD I Reflection light quantity monitor signal input. 11 APC O Laser APC output. 12 APCREF I Reference voltage input for the laser power intensity setting. 13 GND - Connect to GND. 14 TEMPI I Connects the temperature sensor. 15 TEMPRIConnects the temperature sensor. outputs the reference voltage. 16 SWDT I Data input for microcomputer serial interface. 17 SCLK I Shift clock input for microcomputer serial interface. 18 XLAT I Latch signal input for microcomputer serial interface.Latched when low. 19 XSTBY I Standby setting pin. Normal operation when high Standby when low. 20 F0CNT I Internal current source setting pin. 21 VREF O Reference voltage output. 22 EQADJ I/O Equalizer center frequency setting pin. 23 3TADJ I/O BPF3T center frequency setting pin. 24 Vcc - Power supply. 25 WBLADJ I/O BPF22 center frequency setting pin. 26 TE O Tracking error signal output. 27 CSLED - Connects the sled error signal LPF capacitor. 28 SE O Sled error signal output. 29 ADFM O ADIP FM signal output. 30 ADIN I ADIP signal comparator input. 31 ADAGC - Connects the ADIPAGC capacitor. 32 ADFG O ADIP2 binary value signal output. 33 AUX O 13 output / temperature signal output. Switched with serial commands. 34 FE O Focus error signal output. 35 ABCD O Reflection light quantity signal output for the main beam servo detector. 36 BOTM O RF/ABCD bottom hold signal output. 37 PEAK O Peak hold signal output for the RF/ABCD signals. 38 RF O RF equalizer output. 39 RFAGC - Connects the RFAGC capacitor. 40 AGCI I RFAGC input. 41 COMPO O User comparator output. 42 COMPP I User comparator non-inverted input. 43 ADDC I/O Connects the capacitor for ADIP amplifier feedback circuit. 44 OPO O User operational amplifier output. 45 OPN I User operational amplifier inverted input. 46 RFO O RF amplifier output. Eye pattern checkpoint. 47 MORFI I Input of the groove RF signal with AC coupling. 48 MORFO O Groove RF signal output., 5.13 LB1641 (IC402) : DC motor driver • Pin layout • Pin function Input Output Mode IN1 IN2 OUT1 OUT20000Brake1010CLOCKWISE0101COUNTER-CLOCKWISE1100Brake 5.14 BD7910FV-X (IC450) : Pre driver • Block diagram • Pin function Pin No. Symbol I/O Function 1 Vreg IN I Regulator input and regulator power supply 2 Reg GN - Regulator GND 3 NC - Non connect 4 VG I Voltage input for power MOS drive 5 SVCC O EFM high level output voltage 6 PDGND - Pre-driver GND 7 EFM I EFM signal input 8 MUTE I Mute control (Low active) 9 NC O Non conncet 10 NC O Non connect 11 NC - Non connect 12 VOD2 O Sync.output (Lower power MOS,drain) 13 VSS - Hbridge GND (Lower power MOS,source) 14 VOD1 O Sync.output (Lower power MOS,drain) 15 VOS1 O Source output (Upper power MOS,source) 16 VDD - H bridge power supply terminal(Upper power MOSsource) 17 VOS2 O Source output (Upper power MOSsource) 18 Reg DRV O External PNP drive output for regulator 19 Reg OUT O Reglator output (Emitter follower output) 20 Reg NF - Regulator feedbaack terminal, 5.15 CXD2662R (IC350) : DSP • Pin layout • Block diagram, • Pin function (CXD2662R) Pin No. Symbol I/O Function 1 MNT0 I/O Monitor output. 2 MNT1 O Monitor output. 3 MNT2 O Monitor output. 4 MNT3 O Monitor output. 5 SWDT I Data input for microcomputer serial interface. 6 SCLK I Shift clook input for microcomputer serial interface. 7 XLAT I Latch input for microcomputer serial interface.Latched at the falling edge. 8 SRDT O Data output for microcomputer serial interface. 9 SENS O Outputs the internal status corresponding to the microcomputer serial interface address. 10 XRST I Reset input. Low : reset 11 SQSY O Disc subcode Q sync / ADIP sync output. 12 DQSY O Subcode Q sync output in U-bit CD or MD format when the Digital In source is CD or MD. 13 RECP I Laser power switching input. High : recording power ; low ; playback power 14 XINT O Interruption request output. Low when the interruption status occurs. 15 TX I Enable signal input for recoding data output. High : enabled 16 OSCI I Crystal oscillation circuit input. 17 OSCO O Crystal oscillation circuit output. (inverted output of the OSCI pin) 18 OSCO I OSCI input frequency switching. XTSL1(command) = low and XTSL = high : 512Fs (22.5792MHz) XTSL1(command) = low and XTSL = low : 1024Fs (45.1584MHz) XTSL1(command) = high : 2048Fs (90.3168MHz) 19 DIN0 I Digital audio interface signal input 1. 20 DIN1 I Digital audio interface signal input 2. 21 DOUT O Digital audio interface signal output. 22 DATAI I Test pin. Connect to GND. 23 LRCKI I Test pin. Connect to GND. 24 XBCKI I Test pin. Connect to GND. 25 ADDT I Data input from A / D converter. 26 DADT O REC monitor output / decoded audio data output. 27 LRCK O LA clock (44.1kHz) output to the external audio block. 28 XBCK O Bit clock (2.8224kHz) output to the external audio block. 29 FS256 O 256Fs output. 30 DVDD - Digital power supply. 31 A03 O External DRAM address output. 32 A02 O External DRAM address output. 33 A01 O External DRAM address output. 34 A00 O External DRAM address output. 35 A10 O External DRAM address output. 36 A04 O External DRAM address output. 37 A05 O External DRAM address output. 38 A06 O External DRAM address output. 39 A07 O External DRAM address output. 40 A08 O External DRAM address output. 41 A11 O External DRAM address output. 42 DVSS - Digital ground. 43 XOE O External DRAM output enable. 44 XCAS O External DRAM CAS output. 45 A09 O External DRAM address output. 46 XRAS O External DRAM RAS output. 47 XWE O External DRAM write enable. 48 D1 I/O External DRAM data bus., Pin No. Symbol I/O Function 49 D0 I/O External DRAM data bus. 50 D2 I/O External DRAM data bus. 51 D3 I/O External DRAM data bus. 52 MDDTI I MD-DATA mode 1 switching input. (Low : normal mode ; high : MD-DATA mode 1) 53 ASYO O Playback EFM full-swing input. (Low : vss ; high : Vdd) 54 ASYI I Playback EFM comparator slice voltage input. 55 AVDD - Analog power supply. 56 BIAS I Playback EFM comparator bias current input. 57 RFI I Playback EFM RE signal input. 58 AVSS - Analog ground. 59 PCO O Phase comparison output for master PLL of playback digital PLL and recording EFM PLL. 60 FILI I Filter input for master PLL of playback digital PLL and recording EFM PLL. 61 FILO O Filter output for master PLL of playback digital PLL and recording EFM PLL. 62 CLTV I Internal VCO control voltage input for master PLL of playback digital EFM PLL and recording EFM PLL. 63 PEAK I Peak hold signal input for quantity of light. 64 BOTM I Bottom hold signal input for quantity of light. 65 ABCD I Signal input for quantity of light. 66 FE I Focus error signal input. Auxillary input 1. 67 AUXI I Auxillary input 1. 68 VC I Center voltage input. 69 ADIO I Monitor output for A / D converter input signal. 70 AVDD - Analog power supply. 71 ADRT I Voltage input for the upper limit of the A / D converter operating range. 72 ADRB I Voltage input for the lower limit of the A / D converter operating range. 73 AVSS - Analog ground. 74 SE I Sled error signal input. 75 TE I Tracking error signal input. 76 DCHG I Connect to he low-inpedance power supply. 77 APC I Error signal input for laser digital APC. 78 ADFG I ADIP binary FM signal (22.05 1kHz) input. 79 F0CNT O CXA2523 current source setting output. 80 XLRF O CXA2523 control latch output. Latched at the falling edge. 81 CKRF O CXA2523 control shift clock output. 82 DTRF O CXA2523 control data output. 83 APCREF O Reference PWM output for laser APC. 84 LDDR O PWM output for laser digital APC. 85 TRDR O Tracking servo drive PWM output. ( ) 86 TFDR O Tracking servo drive PWM output. (+) 87 DVDD - Digital power supply. 88 FFDR O Focus servo drive PWM output. (+) 89 FRDR O Focus servo drive PWM output. ( ) 90 FS4 O 4Fs output. (176.4kHz) 91 SRDR O Sled servo drive PWM output. ( ) 92 SFDR O Sled servo drive PWM output. (+) 93 SPRD O Spindle servo drive output. (PWM ( ) or polarity) 94 SPFD O Spindle servo drive output. (PWM (+) or PWM absolute value) 95 FGIN I Spindle CAV servo FG input. 96 TEST1 I Test pin. Connect to GND. 97 TEST2 I Test pin. Connect to GND. 98 TEST3 I Test pin. Connect to GND. 99 DVSS - Digital ground. 100 EFMO O Low when playback ; EFM (encoded data) output when recording., 5.16 L4909 (IC910) : Regulator • Pin layout • Block diagram • Pin functions Pin No. Symbol Function 1 FB1 REG1 feedback voltage input 2 VO1 REG1 output voltage 3 VINA Input DC supply voltage 4 TRIG Trigger for external SCR (crowbar protection) 5 OC Over current warning output 6 EN1 REG1 enable input 7 EN2 REG2 enable input 8 GND Analog ground 9 EN3 REG3 enable input 10 FB3 REG3 feedback voltage input 11 VO3 REG3 output voltage 12 N.C. Not connected 13 VINB Input DC supply voltage 14 VO2 REG2 output voltage 15 FB2 REG2 feedback voltage input, 5.17 LA1838 (IC1): FM AM IF AMP&detector, FM MPX Decoder • Block Diagram • Pin Function Pin No. Symbol I/O Function 1 FM IN I This is an input terminal of FM IF signal. 2 AM MIX O This is an out put terminal for AM mixer. 3 FM IF I Bypass of FM IF 4 AM IF I Input of AM IF Signal. 5 GND - This is the device ground terminal. 6 TUNED O When the set is tunning,this terminal becomes "L". 7 STEREO O Stereo indicator output. Stereo "L", Mono: "H" 8 VCC - This is the power supply terminal. 9 FM DET - FM detect transformer. 10 AM SD - This is a terminal of AM ceramic filter. 11 FM VSM O Adjust FM SD sensitivity. 12 AM VSM O Adjust AM SD sensitivity. 13 MUTE I/O When the signal of IF REQ of IC121(LC72131) appear, the signal of FM/AM IF output. //Muting control input. 14 FM/AM I Change over the FM/AM input. "H" :FM, "L" : AM 15 MONO/ST O Stereo : "H", Mono: "L" 16 L OUT O Left channel signal output. 17 R OUT O Right channel signal output. 18 L IN I Input terminal of the Left channel post AMP. 19 R IN I Input terminal of the Right channel post AMP. 20 RO O Mpx Right channel signal output. 21 LO O Mpx Left channel signal output. 22 MPX IN I Mpx input terminal 23 FM OUT O FM detection output. 24 AM DET O AM detection output. 25 AM AGC I This is an AGC voltage input terminal for AM 26 AFC - This is an output terminal of voltage for FM-AFC. 27 AM RF I AM RF signal input. 28 REG O Register value between pin 26 and pin28 besides the frequency width of the input signal. 29 AM OSC - This is a terminal of AM Local oscillation circuit. 30 OSC BUFFER O AM Local oscillation Signal output., 5.18 LA4628 (IC905) : Power amp. • Pin layout • Block diagram 5.19 TC7S08F-W (IC340) : Buffer • Pin layout • Block diagram, 5.20 LC72136N (IC2) : PLL frequency synthesizer • Pin layout • Block diagram • Pin function Pin Pin No. Symbol I/O Function No. Symbol I/O Function 1 XT I X'tal oscillator connect (75kHz) 13 IFCONT O IF signal output 2 FM/AM O LOW:FM mode 14 - Not use 3 CE I When data output/input for 4pin(input) 15 AMIN I AM Local OSC signal output and 6pin(output): H 16 FMIN I FM Local OSC signal input 4 DI I Input for receive the serial data from 17 VCC - Power suplly(VDD=4.5-5.5V) controller When power ON:Reset circuit move 5 CLOCK I Sync signal input use 18 PD O PLL charge pump output (H: Local 6 DO O Data output for Controller Output port OSC frequency Height than Refer- 7 FM/ST/VCO O Low: MW mode ence frequency.L: Low Agreement:Height impedance) 8 AM/FM O Open state after the power on reset 19 LPFIN I Input for active lowpassfilter of PLL 9 LW I/O Input/output port 20 LPFOUT O Output for active lowpassfilter of PLL 10 MW I/O Input/output port 21 GND - Connected to GND 11 SDIN I/O Data input/output 22 XT I X'tal oscillator(75KHz) 12 IFIN I IF counter signal input, 5.21 LA6541-X (IC801) : Servo driver • Pin Layout & block diagram • Pin function Pin No. Symbol Function 1 Vcc Power supply (Shorted to pin 24) 2 Mute All BTL amplifier outputs ON/OFF 3 Vin1 BTL AMP 1 input pin 4 Vg1 BTL AMP 1 input pin (For gain adjustment) 5 Vo1 BTL AMP 1 input pin (Non inverting side) 6 Vo2 BTL AMP 1 input pin (Inverting side) 7 Vo3 BTL AMP 2 input pin (Inverting side) 8 Vo4 BTL AMP 2 input pin (Non inverting side) 9 Vg2 BTL AMP 2 input pin (For gain adjustment) 10 Vin2 BTL AMP 2 input pin 11 Reg Out External transistor collector (PNP) connection. 5V power supply output 12 Reg In External transistor (PNP) base connection 13 Res Reset output 14 Cd Reset output delay time setting (Capacitor connected externally) 15 Vin3 BTL AMP 3 input pin 16 Vg3 BTL AMP 3 input pin (For gain adjustment) 17 Vo5 BTL AMP 3 output pin (Non inverting side) 18 Vo6 BTL AMP 3 output pin (Inverting side) 19 Vo7 BTL AMP 4 output pin (Inverting side) 20 Vo8 BTL AMP 4 output pin (Non inverting side) 21 Vg4 BTL AMP 4 output pin (For gain adjustment) 22 Vin4 BTL AMP 4 output pin 23 Vref Level shift circuit's reference voltage application 24 Vcc Power supply (Shorted to pin 1), 5.22 LA72723(IC3): RDS demodulation • Pin layout • Block Diagram • Pin functions Pin No. Symbol I/O Function 1 VREF O Reference voltage output (Vdda/2) 2 MPXIN I Baseband (multiplexed) signal input 3 Vdda - Analog power supply (+5V) 4 Vssa - Analog ground 5 FLOUT O Subcarrier input (filter output) 6 CIN I Subcarrier input (comparator input) 7 TEST I Test input 8 XOUT O Crystal oscillator output (4.332MHz) 9 XIN I Crystal oscillator input (exeternal reference input) 10 Vssd - Digtal ground 11 Vddd - Digtal power supply 12 MODE I Read mode setting (0:master, 1:slave) 13 RST I RDS-ID/RAM reset (positive polarity) 14 RDDA O RDS data output 15 RDCL I/O RDS clock output (master mode)/RDS clock input (slave mode) 16 RDS-ID/READY O RDS-ID/READY output (negative polarity), 5.23 LC75345M-X (IC901) : E.volume • Pin layout • Block diagram, • Pin function Pin No. Symbol Function 1 DI Serial data and clock input pin for control. 2 CE Chip enable pin. 3 VSS Ground pin. 4 LOPOUT Output pin of general-purpose operation amplifier. 5 LINM Non-inverted input pin of general-purpuse operation amplifier. 6 LINP Non-inverted input pin of general-purpuse operation amplifier. 7 LOUT ATT + equalizer output pin. 8 LSB Capacitor and resistor connection pin comprising filters for bass and super-bass band. 9 LBASS2 Capacitor and resistor connection pin comprising filters for bass and super-bass band. 10 LBASS1 Capacitor and resistor connection pin comprising filters for bass and super-bass band. 11 LTRE Capacitor and resistor connection pin comprising treble band filter. 12 LVRIN Volume input pin. 13 LSELO Input selector output pin. 14 L5 Input signal pin. 15 L4 Input signal pin. 16 L3 Input signal pin. 17 L2 Input signal pin. 18 L1 Input signal pin. 19 Vref 0.5 x VDD voltage generation block for analog ground. 20 R1 Input signal pin. 21 R2 Input signal pin. 22 R3 Input signal pin. 23 R4 Input signal pin. 24 R5 Input signal pin. 25 RSELO Input selector output pin. 26 RVRIN Volume input pin. 27 RTRE Capacitor connection pin comprising treble band filter. 28 RBASS1 Capacitor and resistor connection pin comprising filter for bass and super-bass band. 29 RBASS2 Capacitor and resistor connection pin comprising filter for bass and super-bass band. 30 RSB Capacitor and resistor connection pin comprising filter for bass and super-bass band. 31 ROUT ATT + equalizer output pin. 32 RINP Non inverted input pin of general-purpose operation amplifier. 33 RINM Non inverted input pin of general purpose operation amplifier. 34 ROPOUT Output pin of general-purpose operation amplifier. 35 VDD Supply pin. 36 CL Serial data and clock input pin for control., 5.24 XC62ER3602M-X (IC400) : Regulator • Pin layout • Block diagram • Pin function Pin No. Symbol Function 1 VSS GND 2 VIN Power supply input 3 VOUT Regulator output 4 EXT Base current control terminal 5 CE Chip enable 5.25 TK11140SC-W (IC485) : Regulator • Pin layout • Block diagram, VICTOR COMPANY OF JAPAN, LIMITED AUDIO & COMMUNICATION BUSINESS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.22003) Printed in Japan 2002/12]
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