Download: Training Manual Digital Still Camera Servicing Models: DSC-S75 DSC-S85 DSC-F707 Circuit Descriptions and Troubleshooting Course: DSC-02
Training Manual DSC-S75 DSC-S85 DSC-F707 Digital Still Camera Servicing Models: DSC-S75 DSC-S85 DSC-F707 Circuit Descriptions and Troubleshooting Course: DSC-02 Table of Contents 1.Overview ...1 DSC-F707 10. Features ...22 Symbol Explanations ... 1 11. Repair Tools & Jigs...23 2. Software - All Models ...2 12. Alignment ...24 PTP ... 2 Radar W and RM-85 ... 24 DSC-S75 and DSC-S85 When to Align ... 25 3. DSC-S75 & DSC-S85 Digital 13. Block Diagram ...26 Cameras ...3 Lens Assembly ... 26 Overview... 3 Camera Control ... 27 Repair Tools & Jigs ... 3 Audio and Vidceo ... 27 Alignment ... 4 Flash ....
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Training Manual DSC-S75 DSC-S85 DSC-F707
Digital Still Camera ServicingModels: DSC-S75 DSC-S85 DSC-F707 Circuit Descriptions and Troubleshooting Course: DSC-02,
Table of Contents1.Overview ...1 DSC-F707 10. Features ...22 Symbol Explanations ... 1 11. Repair Tools & Jigs...23 2. Software - All Models ...2 12. Alignment ...24 PTP ... 2 Radar W and RM-85 ... 24
DSC-S75 and DSC-S85 When to Align ... 253. DSC-S75 & DSC-S85 Digital 13. Block Diagram ...26 Cameras ...3 Lens Assembly ... 26 Overview... 3 Camera Control ... 27 Repair Tools & Jigs ... 3 Audio and Vidceo ... 27 Alignment ... 4 Flash ... 27 Radar W and RM-85 ... 5 14. Lens Assembly ...28 4. Block Diagram ...6 Overview... 28 Overview... 6 Circuit Description... 29 Operation... 6 Iris ... 30 SY-68 Board T roubleshooting ... 6 Servicing ... 32 5. Power Supply ...9 Focus Ring Repairs ... 34 Board Access ... 9 15. Power Supply ...35 Circuit Operation ... 9 Converter Operation ... 36 Unregulated always ON voltages ... 11 SCP ... 37 V REF ... 11 Troubleshooting ... 38 DC IN - Battery Switching ... 11 Discharging Storage Capacitors ... 39 Power Supply Troubleshooting ... 13 Checking FR-181 Board ... 39 6. Flash Assembly ...14 16. Flash Circuit ...40 7. Video Processing ...15 Overview... 40 8. Lens Assembly ...16 Operation... 40 Operation... 16 Servicing ... 41 Troubleshooting ... 18 Procedure ... 42 9. Camera Switches ...20 Blue Flash ... 42 Overview... 20 17. Jigging Camera ...43 Troubleshooting ... 20 18. Camera Switches ...44 Overview... 44 Troubleshooting ... 44, 9. Self-Diagnostics & Screen Display (DA4 & DA-4X Chassis)
Chapter 1 - OverviewThe DSC-S75, DSC-S85 and DSC-F707 cameras are high quality ‘high–end’ cameras with many features, including Carl Zeiss lenses, multi-step and continuous focus, optical and digital zoom, low light auto focus illumination, USB connectivity, JPEG, GIF and TIFF picture formats, burst and bracketed still modes and a MPEG movie mode. The camera specifications are shown in the table: MSRP 999.95 599.95 499.95 Imager (Gross) 1/1.2" 5.2MP Super 1/1.8" 4.1MP CCD 1/1.8" 3.3MP CCD MAD CCD Effective Pixels 5.0 Megapixel 4.0 Megapixel 3.3 Megapixel Optical/Digital Zoom 5X / 2X / 10X 3X / 2X / 6X 3X / 2X / 6X Carl Zeiss Lens Yes Yes Yes Lens Thread 58mm 52mm w/adapter 52mm w/adapter Manual Focus Yes, Continuous Ring Yes, 13 Step Yes, 13 Step A/D Conversion 14-bit DXP 14-bit DXP 14-bit DXP AF Illuminator Hologram AF Yes, On/Off Select Yes, On/Off Select Flash Modes Auto/Forced/Off Auto/Forced/Off Auto/Forced/Off Red-eye Reduction On/Off On/Off On/Off LCD/Viewfinder 1.8" 123K Pixel 1.8" 123K Pixel 1.8" 123K Pixel LCD Backlight On/Off, adjustable On/Off adjustable On/Off adjustable Recording Media Memory Stick only Memory Stick only Memory Stick only Still Image Formats JPEG, GIF, TIFF JPEG, GIF, TIFF JPEG, GIF, TIFF E-mail Mode Yes, adds 320x240 Yes, adds 320x240 Yes, adds 320x240 Movie Modes MPEG EX/HQ MPEG EX/HQ MPEG EX/HQ Supplied Storage Media 16MB Memory Stick 16MB Memory Stick 8MB Memory Stick Connections Video/USB/AC Power Video/USB/AC Power Video/USB/AC Power Dimensions 6-5/6 x 4-7/8 x 2-5/8" 4-15/16x2x2-9/16" 4-15/16x2x2-9/16" Weight 1 lb, 6.4 oz (635g) 15.2 oz (423g) 15.2 oz (423g) Warranty Terms 1 Year parts, 90 days 1 Year parts, 90 days 1 Year parts, 90 days labor labor labor
Symbol ExplanationsThe following symbols used in this manual: ? This symbol in front of a paragraph indicates a helpful service tip or step N The upraised arm symbol indicates a momentary halt to a process or procedure and evaluate if it is done correctly X This indicates a caution or warning, 9. Self-Diagnostics & Screen Display (DA4 & DA-4X Chassis)
Chapter 2 - Software - All ModelsAll current model Sony still cameras are packaged with a CD containing a USB driver for interfacing with USB computer ports and a number of video editing programs: • Two versions of MGI PhotoSuite, a still video editing and album creating application: Version 8.1 for Windows operating systems and version 1.1 for Mac operating systems • Also included is MGI Video Wave III, an entry-level motion video editing system. • As of this writing, the supplied USB camera driver is version SVP-004. Tables 2-1 and 2-2 list the driver compatibility with Macintosh and Windows operating systems. Table 2-1 - Windows Operating Table 2-2 - Mac Operating Systems Systems OS Version Status OS Version Status 3.1 X 7.1.2 X 95 X 7.5 X 98 OK 7.6.1 X 98SE OK 8.0 X ME OK 8.1 X NT3.5.1 X 8.5 X NT4.0 X 8.5.1 OK 2000 PRO OK 8.6 OK XP PRO OK* 9.0 OK CE X 9.1 OK X (10) OK* *Driver not needed. Already built into
OSX= Not Compatible The SVP-004 USB device driver is included as an accessory with each camera. It can be downloaded from the Sony web support site at: http://www.ita.sel.sony.com/support/dvimag/cybershot/
PTP (Picture Transfer Protocol)• Picture data is transferred from the camera to a computer via the USB port using PTP (Picture Transfer Protocol). • PTP is an open standards protocol for transferring pictures from digital cameras to computers using the USB port • PTP protocol allows the camera to be seen by the computer as a mass storage device. When connected to a computer, the computer will see the picture files in the camera as data files. • PTP allows only picture objects to be seen and transferred between the camera and the computer. When the memory stick is installed in the camera, non picture files that are stored on the memory stick will not be seen by the computer. • PTP works only with Windows XP. It is not supported by any earlier operating system., 3. DSC-S75 and DSC-S85 Digital Cameras
Chapter 3 - DSC-S75 and DSC-S85 Digital Cameras OverviewThe DSC-S75 and S85 Cyber-shot® digital cameras are very similar in appearance and operation. The circuit descriptions and repair procedures are also very similar and apply equally to both models. The differences are in the body colors (S85 is black and S75 is silver), the number of CCD pixels and the price. The S75 is supplied with an 8 MB Memory Stick ™ and the S85 with a 16 MB memory stick. DSC-S75 DSC-S85
Repair Tools and JigsRepairing these digital cameras requires the following specialized tools and jigs. See Table 3-1 below: Table 3-1 – Repair Tools and Jigs Jig or Tool Vendor NTSC color monitor Your choice Vectorscope Your choice Radar W jig J-6082-429-A Radar Jig Software Available Online at http://service.sel.sony.com/ Computer to run Radar W software Must have USB & bi-direction parallel printer port RM-95 Adjusting Remote Commander J-6082-053-B CPC 9 interface jig See note 1. J-6082-393-C See note 1. Light box with focus and color bar patterns Your choice Tripod Your choice Tool to discharge flash capacitor Made with 1000 ohm 1 watt resistor Note 1: Do not use earlier version of CPC-9 interface jigs. Use only -393-C version. Earlier versions will damage the SY-68 board. The version and part numbers are silk screened on the CPC-9 jigs., 3. DSC-S75 and DSC-S85 Digital Cameras
Alignment When to AlignCameras will need alignment when one of the following components is replaced: • SY-68 board • Lens assembly • Flash • LCD display • LCD character display Table 3-2 shows the areas that will need realignment when one of the above components is replaced.
Table 3-2 - Adjustment TableSY-68 LCD LCD BOARD LENS DISPLAY BACKLITE FLASH INITIALIZATION OF D PAGE DATA INITIALIZATION OF 7,9,B,E,F PAGE DATA VIDEO SYNC LEVEL ADJ. VIDEO BURST LEVEL ADJ. FLANGE BACK ADJ. F No. STANDARD DATA INPUT MECHANICAL SHUTTER ADJ. LIGHT LEVEL ADJ. MIXED COLOR CANCEL ADJ. AUTO WHITE BALANCE STANDARD DATA INPUT AUTO WHIT BALANCE ADJ. COLOR REPRODUCTION ADJ. CCD (WHITE AND BLACK0 DEFECT COMPENSATION STROBE WHITE BALANCE ADJ. LCD INITIAL DATA INPUT LCD VCO ADJ. LCD D RANGE ADJ. LCD BRIGHT ADJ. LCD CONTRAST ADJ. LCD COLOR ADJ. LCD V-COM LEVEL ADJ. LCD V-COM ADJ. LCD WHITE BALANCE ADJ, 3. DSC-S75 and DSC-S85 Digital Cameras
Radar W and RM-95Alignments should be done with the RADAR W interface jig and associated software. They can also be done with the Adjustment RM-95 remote control jig, but RADAR W is an order of magnitudes faster than the Service RM-95, and unlike the RM-95, it is less prone to data entry mistakes. The Sony part number for the Radar W interface jig is J-6082-429-A. The RM-95 jig should be reserved for making small registry changes or for checking the operation of the camera switches. The diagrams show how to interconnect the interface jig between the camera and the RM-95 or the Radar W jig. FROM + - CAMERA ADJUSTING REMOTE INTERFACE UNIT1 COMMANDER J-6082-429-A RM-95
TO COMPUTER PARALLEL PORTREPLACE RM-95 PLUG CPC-9 JIG WITH INTERFACE J-6082-393-C UNIT PLUG INTERFACING RM-95 OR RADAR W JIG, 4. DSC-75 and DSC-S85 Block Diagram
Chapter 4 - DSC-S75 and DSC-S85 Block DiagramThe following is a short explanation of the internal camera operations in block diagram format, based on the SY- 68 board as the central item.
OverviewRefer to Figure 4-1. Most of the camera functions are concentrated on SY-68 board, including interfaces for external switches, controls and I/O interfaces to the outside world. The power supply is on the DM-101 board.
OperationThe camera is controlled by three processors: CAMERA DSP IC301, FRONT CONTROL IC402 and MC CAMERA SH DSP IC501. The video to the LCD panel and a power supply DC CONTROL IC. • The CAMERA DSP converts the light image falling on the CCD into video signals for the LCD monitor and A/ V jack and into digital video data for the memory stick and USB port. • The Front Control IC acts as an I/O interface. It processes all input commands from the camera switches dials and sensors, controls the flash charging and generates the characters for the LCD monitor panel and the LCD readout display. • The MC Camera SH DSP IC controls the digital data to the LCD monitor panel (the video signals are controlled by the Camera DSP) and the USB I/O. • The DC Control IC controls all of the regulated power supply outputs from the DM-101 board. Accessory jack J782 interfaces with the camera LANC data and is also used for triggering an external flash. CN753 is the Memory Stick™ socket
SY-68 Board TroubleshootingThe SY-68 board is not a repairable item. If defective, it should be replaced and the old board returned for core credit, as per Sony policy. The board, together with the lens assembly, is easily removable once the back cover is taken off. They are held in place by just five easily visible screws; no further explanation is necessary. N The camera must be fully aligned after the board is replaced. This includes flange back adjustment. To reduce the alignment time, whenever possible use Radar W to upload and save the data from the original SY board to the computer then download it back into the new board. ? If camera is intermittent, check the SY board for flatness. Replace if it is slightly bowed along its long axis. ? After replacing a SY-68 board, the camera may display Japanese characters. Use the Service RM-95 to change the display to English. Change the data in page D, address 4F, to 04 (do not forget to disable write protect before writing and to press Pause after writing). You can also use this method if the user inadvertently changes the display to another language., 4. DSC-75 and DSC-S85 Block Diagram SY-68 BD.
IMAGERPROCESS Y JK-211BD.VIDEO OUT AV OUT ZOOM C VIDEO
AMPM FOCUS M IRIS M SHUTTER DRIVE V AUDIO OUT
AUDIOPROC. MIC. Z SENS RST SENSOR & AMP.
SPEAKERSENSOR FSENS RST
ZOOMMOTOR CK-103 BOARDIC301 DRIVE CAMERA VR LCD901 DSP LCD FOCUS VGDRIVE MOTOR VB COLOR DRIVE LCD MON. STRB ON FLASH STRB AIN STB CHARGE BACK XSTB FULL LIGHT IC501 MC USB D+ EXT STRB ON CAMERA USB D- SH DSP USB LANC SIG. JK-211BOARD LANC DC J782 ACC JK-211 BOARD DM-101 CLK BOARD CN753
MEMORY STICK SOCKETIC001 DC CONT. TO/FROM FRONT CONTROL IC FIGURE 4-1 - OVERALL BLOCK DIAGRAM A 4.1DSC02a 1483 10/10/02, 4. DSC-75 and DSC-S85 Block Diagram
TO/FROM MC CAMERA TO/ FROM SH DSP FLASH UNIT & LANC TO/FROM ACC CAMERA DSPKY-55 BOARD CK-103 KEY AD 0-2 BOARD FUNCTION JK-211 KEY
BOARDLITHIUM VL 3V INITIAL BATT. CONTROL SW.RESET BLOCK (MODE) BACK-UP
SHUTTER SWITCHDM-101 BD. + MODE BATT. BATT. SIG. DIAL TERM. S IC402 - SYSDD ON FRONT POWER CONTROL ON/OFF D1.8V D3.2V CAM 3.2V COM 0-3 A 3.2V IC001 CAM P 5V SEG 0-19 LCD DC A 4.9V CHARACTER DISP. CONT. P 4.9V 10.05V 15.05V KEY AD3 ZOOM -10.05V SWITCH PANEL-15.3V DIAL A,B JOG DIAL DC IN CAM -7.5V CONTROL SW. ACV UNREG BLOCK ZOOM ST UNREG BATT.UNREG SY-68 BOARD
FIGURE 4-2 - OVERALL BLOCK DIAGRAM B 4.2DSC02b 1483 10/10/02, 5. DSC-S75 and DSC-S85 Power Supply
Chapter 5 - DSC-S75 and DSC-S85 Power SupplyThe DM-101 Power Supply board converts the dc input from the ac adapter or battery into all of the necessary ac and ±dc voltages.
Board AccessThe DM-101 board is sandwiched between the SY-68 board and the front of the camera and is not easily accessible for live troubleshooting. The output and control lines to the board can be checked at CN701 on the SY-68 board when the camera back is removed. Although the camera will not operate properly with the back removed, the power supply will power up. The picture shows the location of CN701 on the SY-68 board.
Circuit OperationFigure 5-1 shows a block diagram of the power supply board. Due to limited access, “live” troubleshooting is limited to the CN701 connector on the SY-68 board. Therefore, the circuit description of the DM-101 board will be limited to a block diagram. With the exception of an unregulated always-on voltage and an unregulated battery voltage, all voltages are produced by discrete switching circuits on the board. The switching circuits are controlled and regulated by DC Control IC001, which provides the switching signals and feedback control to the switching transistors., 5. DSC-S75 and DSC-S85 Power Supply BATT. ON CN001 39 7 CN701F004 F005 ALWAYS ON 1 35 11 2 F003 3 F001 VCC-B VCC-C J001 33 DC IN F002 VCC-A 34 13 Q002 VCC-D A 3.2V 28 17 FAST 29 18Q009 CH. CAM 3.2V3.2V CAM 26 19 27 20 SW. REG. SW D 3.2V 23 21 Q003,004 VCC-D 25 INIT. FB CH. D003 Q007CN002 A 4.9VCAM 12 32 + 1 SW. REG. 14 34S2SW SY-68 BD. BATT P4.9V - 11 353 SIG. FB BT902 BATT. VCC-B 4.9V 10V TERMINAL Q005 19 2715V +10V 18 28 +15V -10.5V 17 29 IC001 -10.5V V. REF. DC SWSCP FB
CONTROLVCC-B V. REF. CAM 16 30 SYS -7.5V DD ON Q008
PANELSW BACK LIGHT Q070. -15.3V -VOL Q076 15 31 -15V 7 39 VCC-A SW. REG. ON/OFF BL VO- MD-101 31 15 BOARD D 1.8V 8 36 Q011, SCP 10 38 Q012 30 16 SW 1.8B SYS DD ON 32 14 SW SW. REG. BATT SIG 40 6 FB INIT CH. ON 36 10 FAST CH. 37 9 V. REF. BATT. /XEXT 38 8
FIGURE 5-1 - POWER SUPPLY BLOCK DIAGRAM 1DSC02 1479 10/11/02, 5. DSC-S75 and DSC-S85 Power Supply
Unregulated always ON voltagesThe always-on voltage is fed to all circuits via four fuses ? F1 ~ F4. Each -10.5V fuse supplies a different section of + IC001 and its respective external VCC-B Q005 switching circuit. SW. + +15V +10V, +15V, -10V Supplies PRIFROM The circuit supplying these voltages IC001 +10V+ is unique: one of the secondary windings is in series with the +4.9V output from Q007. See Figure 5-2. It operates as follows: 4.9V FROM 1. The primary winding of the Q007 transformer is switched by Q005 FIGURE 5-2 - +10V, +15V,-10.5V DIAGRAM 9DSC02 1493 9/26/02 to provide an ac voltage to the primary. Q005 is powered by Vcc-B. 2. The turn ratio of the secondary +10V and +15V winding can provide only +5V and +10V. To get the additional 5 volts, the common leg of the secondary winding is not connected to ground but to the +4.9V line from Q007. This causes the output from this secondary winding to increase by 4.9V.
V REFThis output line from Control IC001 provides a very stable 1.5 reference voltage to many of the voltage regulators in the power supply.
DC IN – Battery SwitchingAC Adapter Connected See Figure 5-1. • The ac adapter directly supplies the camera with power when it is connected. Q002 provides a fast charge (initial charge) to the battery if the battery charge is low. • Q003, Q004 and D003 charges the battery with a slow initial charge (current limiting) • Once the battery has charged up a little, switch Q003 / Q004 opens and Q002 closes. This provides the battery with a faster charge. • When the battery has fully charged, switch Q002 opens and the battery is isolated from the ac adapter power. AC adapter Not Connected See Figure 5-1. • The battery supplies power to fuses F001 ~ F004 via switch Q003/Q004 and D003., 5. DSC-S75 and DSC-S85 Power Supply
Control CircuitsSee Figure 5-1 The control lines for this power supply are:
SYS DD ONThis is the master switch that turns the DC Control IC ON/OFF. The line must be HIGH (3.2v) for the IC to operate. It is controlled by the SY-68 board.
SCP (Short Circuit Protection)See Figure 5-3 This is the short circuit protection line. The SY-68 board monitors the -10.5V and +15 volt lines and will output a LOW on the SCP line if the voltages it monitors drops to -8.5 volts and +12 volts, respectively. DC BATT./ F004 ADAPTER F003
INPUTF001 DM-101 F002 BOARD (1/2) VCC 63 VCC 42 15V 15V 18 28 VCC 51 -10.5V 17 29 VCC 28 -10.5V IC001 DC CAM 15V
CONTROL SCP SYSDD ON OUT PULSE 30 SC 56 OUTPUTS TL1 29 Q062, 063 SC 4 EMERGENCY SY-68 BOARD 1/2 TL2 SCP SCP DETECT 30 16 SYS DD ON SYS DD ON32 14 FIGURE 5-3 - SAFETY SHUTDOWN CIRCUIT (SCP) 2DSC02 1480 10/11/02, 5. DSC-S75 and DSC-S85 Power Supply
Power Supply TroubleshootingN Do not repair any of the printed circuit boards on units under warranty. If defective, order a new one and send the old one back for a refund of the core charge, as per Sony policy. Troubleshooting the DM-101 power supply board is limited to checking the output voltage levels and control signal lines on SY-68 connector CN701 and to checking fuses and other components with the board removed. • If the camera is dead, the most important voltage to check is the always-on voltage from fuse F004. See Figure 5-1. Since this fuse provides always-on power to the SY-68 board, that board will not be able to provide a HIGH to the SYS DD ON line and the power supply will not turn on. Failure to diagnose this fuse can prevent the technician from determining which board is defective. Replace the DM-101 board if this fuse is open after first making sure that there is not a short in the SY-68 board that is blowing the fuse. • If the lack of a particular output voltage is traced to a blown fuse, make sure to also check the switching transistors that it feeds for a short. ? A common complaint of the battery not charging or unit not running from ac adaptor is caused by a physically damaged ac adapter jack. Check this jack before replacing the battery or ac adapter. It is easily lifted out once the back cover is removed. The part number is for the jack is 1-7940-456-1. See Figure 5-4. Figure 5-4, 6. DSC-S75 and DSC-S85 Flash Assembly
Chapter 6 - DSC-S75 and DSC-S85 Flash AssemblyThe flash assembly is considered a replaceable module so its internal operation is not discussed. Its mode of operation is rather simple: In addition to unregulated B+ input and ground (not shown), it has five control lines to and from the SY-68 board: STB CHARGE, XSTB FULL, STRB ON, PHOTO TR OUT (STRB AIN) and STRB PHOTO ON. 1. STB CHARGE. A HIGH (3V) on this line from the SY- 68 board turns on the storage capacitor charge circuit. Charging stops when the line goes LOW. 2. XSTB FULL. Outputs a LOW pulse from the flash assembly to the SY-68 board when the storage capacitor is charged up. The SY-68 board then switches the STB CHARGE line LOW, turning off the flash charge circuit. 3. STRB ON. A HIGH pulse on this line from the SY-68 board fires the flash. The on time of the flash is proportional to this pulse width. 4. PHOTO TR OUT (also called STRB AIN). This is an output from a phototransistor located in the front of the camera that feeds back the intensity of the flash reflected back from the scene to the SY-68 board. When sufficient light has reached the subject, the STRB_ON line goes low and the flash turns off. The voltage level on the STRB_AIN line depends on the amount of light reflecting to the camera. Maximum level is 3V with no light falling on the phototransistor. 5. STRB PHOTO ON. This line enables the phototransistor. It goes HIGH when the shutter is pressed and goes LOW after the picture has been taken.
CAUTION – SHOCK HAZARDX Capacitor will charge up when the camera is turned on. Never touch 1k1 any exposed part of the flash assembly without first discharging the W storage capacitor. Use a 1K 1W resistor to discharge the capacitor.
Troubleshooting DISCHARGERESISTORFailure to flash can be caused either by the flash assembly or by the SY- (HOLD FOR10 SECONDS) 68 board. Since “live” diagnosis is not practical, an educated guess must be made to determine if the problem is with the flash assembly or with the SY-68 board. ? The flash assembly may be defective if error code E:91:01 appears in the display when taking a flash picture. Figure 6-1 - Flash Assembly ? The flash assembly should be replaced before replacing the SY-68 board if the problem fault cannot be determined. Experience has shown that the flash unit is more likely to be defective than the SY-68 board. It is also much less complicated to replace (no need for extensive alignment) and is also lower in cost., 7. DSC-S75 and DSC-S85 Video Processing
Chapter 7 - DSC-S75 and DSC-S85 Video ProcessingSY-68 BD.
IMAGERPROCESS Y JK-211BD. VIDEO VIDEO OUT AV OUT ZOOMCMFOCUS M IRIS M SHUTTER
AMPDRIVE V AUDIO OUT
AUDIOPROC. MIC. Z SENS RST SENSOR & AMP. SENSOR FSENS RST
SPEAKER ZOOMMOTOR CK-103 BOARDIC301 DRIVE CAMERA VR LCD901 DSP LCD FOCUS VGDRIVE MOTOR VB COLOR DRIVE LCD MON.
BACK LIGHTIC501 MC USB D+ CAMERA USB D- SH DSP USB JK-211BOARD CN753 DM-101 CLK MEMORYBOARD STICK
SOCKETIC001 DC CONT. TO/FROM FRONTCONTROL IC FIGURE 7-1 - VIDEO PROCESSING 5DSC02c 1533 10/11/02 Video processing of the image falling on the CCD, as well as lens control operations are controlled by the CAMERA DSP IC. See Figure 7-1. 1. Starting at the upper left corner of the block diagram, the image from the lens is input to the image processor (includes the CCD). 2. After some processing by the image processors, it is input to the CAMERA DSP, which converts the signal to RGB video components for the LCD panel and into three video components Y, C and V for the video amp. 3. The RGB signals for the LCD display are input to an LCD drive IC and then sent to the display 4. The YCV signals are input to a video amplifier that also combines the signals into one NTSC signal that is sent to the A/V jack. 5. The video, in digital format, is also sent to the Memory Stick storage device and to the USB port via the MC Camera SH DSP IC301., 8. DSC-S75 and DSC-S85 Lens Assembly
Chapter 8 - DSC-S75 and DSC-S85 Lens AssemblyThe lens assembly is replaced as a module. Since it is not disassembled by the technician, its internal mecha- nism will not be discussed. The “electronics” associated with the lens consist of a focus motor, aperture (iris) servo-motor, zoom motor and end position sensors for the zoom and focus lenses. The electrical components, including the motors, are buried inside the lens barrel and are not accessible.
Operation1. Each of the three lens motors is driven by four pulsed dc lines. 2. Motor direction is determined by the sequence that the lines are pulsed. 3. The zoom and focus lenses have end sensors that determine the physical end positions of these lenses during initialization. 4. The iris motor operates as a servo motor and is controlled by the light level falling on the CCD imager., 8. DSC-S75 and DSC-S85 Lens Assembly SYS-68 BD.
LENS IMAGE PROCESSORZOOM FOCUS IRIS CN202MMMIRIS A2 IRISA4IRIS IRIS B (SHUTTER) 5 DRIVE IRIS B FOCUS CN201 SENSOR 8 FOCUS AZOOM SENSOR 6 FOCUS A FOCUS IC301 7 FOCUS B MOTOR CAMERA
DRIVEFOCUS B DSP ZOOM A ZOOM A ZOOM ZOOM B MOTOR 9 DRIVE ZOOMBFSENS RST F SENS VCC F SENS RST F SENS VCC 5 B+ (3.2V) FIGURE 8-1 - LENS ASSY. 10DSC02 1494 10/11/02 Lens Initialization The lens is initialized when the camera is powered up and just before it shuts down. See Figure 6-2. The following occurs at power-up initialization: 1. The zoom and focus motors turn towards their “reset” positions (maximum zoom and near focus, respectively) extending the lens barrel to its extreme position. 2. The reset switches close when their respective lenses reach their reset positions. This resets the position registers to zero. Since the motors are driven by pulsed signals, the registers can keep track of subsequent lens positions by tracking the number of pulses that are sent to the motors. The tracking differentiates between forward drive pulses and reverse drive pulses. 3. Once reset, the lenses reverse direction and turn to the extreme wide angle and infinity focus positions. The +B voltage to the reset sensors is not needed any more and is switched off. 4. Once initialization has completed, the zoom and focus lens are not reinitialized until after both battery and AC power are removed and then reconnected. At power-down, the lens barrel extends to maximum position and then disappears completely into the camera body before shutting down., 8. DSC-S75 and DSC-S85 Lens Assembly
TroubleshootingStatistically, the number one replacement item on cameras is the lens assembly. Mostly because of physical damage caused by either user carelessness or abuse. In many instances, the damage is visible but in other instances, it may be internal and invisible. When no visible damage is noted, the technician has to determine if the problem is with the lens or with the electronics controlling the lens. ? Look around the lens barrel lip or barrel sides for impact damage. A very effective method of determining if the lens motors are working is to initialize the camera and listen to the slight noise from the zoom and focus motors as they are turning. The motors will usually turn and make noise even if the lenses are jammed. With some practice, the technician can discern the noises from each motor. If noise is heard, it is a good indication that the electronics are working. FIGURE 8-2 ? check the lens cap switch first. If OK, the lens assembly may be defective. (It may also be caused by a defective SY-68 board.) See Figure 8-2 for location of lens cap switch., 8. DSC-S75 and DSC-S85 Lens Assembly ? If S75 camera cannot focus in low light conditions, differentiate between a defective lens and a defective SY- 68 board by checking if the low light AF illuminator lights up at low light conditions. Turn the AF illuminator on in a dark area and press the shutter halfway down. If the illuminator lights, then the problem is more likely with the lens; if it does not light, then the problem is with the SY-68 board. ? Error message E:61:00 indicates a lens initialization problem. Check the lens for a mechanical jam., 9. DSC-S75 and DSC-S85 Camera Switches
Chapter 9 - DSC-S75 and DSC-S85 Camera Switches OverviewTheses cameras uses a variety of switches, all of which are mounted on flex board assemblies. Since they are mounted deep inside the camera and on the rear cover, they cannot be checked “live”. When a switch stops responding, it may be because it became defective or a break occurred in its associated flex assembly. In either case, the flex assembly should be replaced. In some instances, a switch may intermittently short, causing an associated response from the camera.
TroubleshootingShorted Switches ? In some cases, a shorted switch may prevent other switches from working. Open Switches Switches that do not close can be checked with a Service RM-95 jig to determine if a switch or switch block is closed or open. With the jig, the switches can be checked “live” and without disassembling the camera. Without the RM-95, the unit must be disassembled and the switch contacts checked with an ohmmeter at the flex board while at the same time pushing on the switch. ? Replace the switch block assembly if the camera turns on spontaneously. The ON/OFF switch may be defective. ? Check the lens-cap-on sensor switch if the camera indicates that the lens is on (and it is not). Testing Switches with RM-95 1. Connect the Service RM-95 to the interface jig and power up the camera. 2. With the RM-95, proceed to data page 2, 3. Table 9-1 shows addresses for the switches. To check a particular switch, go to the address for the switch and activate the switch. If it is working properly, the correct data for the switch will be displayed in the RM-95. Note that the active data is not a fixed but can be within range of numbers shown in the table. For example: When pressing the Control Down switch, any data between 00 and 0C at address 90 is acceptable. 4. On some switches, the binary value of an internal register must be determined. This is done by using Table 9-2 to convert the displayed data to a register value. The least significant data bit displays the values of bit registers 0 to 3; the most significant data bit displays the values of bit registers 4 to 7., 9. DSC-S75 and DSC-S85 Camera Switches Table 9-1 Data Page 2 Switch Address/ Switch Address/ Switch Address/ Data Data Data Control 90/ Menu 90/ Spot 92/ Down 00-0C 28-48 Meter 75-A6 Control 90/ Display/LCD 92/ Zoom W 93/ Up 0D-27 ON/OFF 00-0C 00-0C Control 91/ AE Lock 92 Zoom T 93/ Right 00-0C 0D-27 00-0C Control 91/ Exposure 92/ Jog Dial 93/ Left 0D-27 28-48 28-48 Control 91/ Focus 92/ Power 80/bit 0 * Set 28-48 49/74 On/Off 1=off 0=on Mode Dial 94/ Mode Dial A 94/ Mode Dial 94/ S 00-14 15-3D M 3E-67 Mode Dial 94/ Mode Dial 94/ Mode Dial 94/ SCN 68-A0 Movie A1-D0 Camera D1-FF Mode Dial 80/bit 1 * Mode Dial 86/bit 6 XShutter 80/bit 4 * Play 0=on Setup 0=on 0=on Memory 80/bit 5 * Shutter 80/bit 3 * Stick 0=in 1=out 0=on * Use hex to binary conversion table 9-2 to determine the binary bit values Table 9-2 Hex number on Bit values the Bit 3 Bit 2 Bit 1 Bit O or remote or or or bit 4 commander bit 7 bit 6 bit500000100012001030011401005010160110701118100091001A1010B1011C1100D1101E1110F1111, 10. Alignment
Chapter 10 - DSC-F707 FeaturesThis is a high-end camera with a number of unique and outstanding features. Some of those are: • 5.2 mega-pixel Super HAD CCD • Automatic pop-up flash: Hidden flash pops up automatically when flash is required. • Color LCD monitor and color EVF • Night Shot Mode: Allows black and white picture taking in very low light conditions.• Continuous manual focus ring • Hologram laser auto-focus lighting from the front of the lens for low light situations. This allows low light situation focusing. • IR Lighting: LEDs from the front of the lens provides IR lighting when shooting in Night Shot mode. • Pivoting lens: Lens barrel can be tilted vertically up or down., 8. DSC-S75 and DSC-S85 Repair Tools and Jigs
Chapter 11 - DSC-F707 Repair Tools and JigsRepairing the digital camera may require the following specialized tools and jigs. See Table 11-1. Table 11-1 Specialized Tools & Jigs Jig or tool Vendor NTSC Color monitor Your choice Vectorscope Your choice Radar W jig J-6082-429-A Radar Jig Software Available Online at http://service.sel.sony.com Computer to run Radar W software Must have USB and bi-directional parallel (printer) ports RM-95 Adjusting Remote Commander J-6082-053-B CPC 12 interface jig J-6082-436-A Light box with focus and color bar patterns Your choice Tripod Your choice Tool to discharge flash capacitor Made with 1000 ohm 1 watt resistor Extension cable between CD-355 and SY-072 J-6082-448-A boards Extension cable between FR-181 and SY-072 J-6083-095-11 boards, 12. DSC-F707 Alignment
Chapter 12 - DSC-F707 Alignment Radar W and RM-95Alignments should be done with the RADAR W interface jig and its associated software. Although alignment can also be done with the Adjustment RM-95 remote control jig, RADAR W is an order of magnitudes faster than the Service RM-95 and unlike the RM-95, it is not prone to data entry errors by the user. The Sony part number for the Radar W interface jig is J-6082-429-A. ? The RM-95 jig should be reserved for making only a few register changes and for determining the operation of the camera switches. The diagrams show how to interconnect the interface jig between the camera and the RM-95 or Radar W jig. 18DSC02 1534 10/10/02, 12. DSC-F707 Alignment
When to AlignThe camera needs to be aligned when one of the following components are replaced: FR-181 board - PD-155 board - SY-072 board - Lens assembly – Flash – EVF - LCD display - Back light assembly (LC-075 board). Table 12-1 shows which items need realignment when any one of the above components is replaced. Table12-1, 13. DSC-F707 Block Diagram
Chapter 13 - DSC-F707 Block DiagramSince troubleshooting is limited to identifying a defective board or module, the circuit descriptions will only include areas that are necessary to identify a defective board or module. The camera consists of a lens assembly, camera and data control circuits, audio and video processing, and the flash circuits. FP-425 LENS ASSY. CCD SY-072 BD. PD-155 BD. FLEX BD. IRIS SH, AGC LCD A/D MON. LASER 5 MOTORS 4 SENSORS VIDEO IC301 DRIVES EVF IR POSITION CAMERA RGB SENSORS DSP AV
OUT MOTOR DRIVESFLASH CONTROL FR-181 BD.
FLASHBATT. UNREG POP-UP AUDIO DC AMPS 300VDC DC-DC FRONT CONV. IC501 CONT. CAMERA IR LED ON MC IC (I/O) SWITCHES &
CAMLD CONTROLSSH, DSP PD OUT IC001 DC-DC USB CONTROL DC USB OUTPUTS BATT. UNREG DC FIGURE 13-1 - F707 OVERALL DIAGRAM 11DSC02 1496 10/11/02
Lens AssemblyThe lens assembly is replaced as single unit. No repairs are done to its internal components. The lens contains a total of five motors and servo motors, four position sensors, IR light sources and a laser light source. The CCD assembly is an integral part of the lens and the whole lens assembly is replaced if the CCD is defective., 13. DSC-F707 Block Diagram
Camera Control• The camera is controlled by three processor ICs: CAMERA DSP IC301, MC CAM SH SP IC501 and the Front Control I/O IC. • The CAMERA DSP converts the signals from the CCD into video signals for the LCD monitor and A/V jack. • The MC CAM SH DSP IC generates the characters for the LCD monitor and EVF, converts the video to data that can be used by the USB protocol and the memory stick. • The Front Control IC on the FR-181 board processes the input commands from the camera switches dials and sensors, and controls the flash pop-up solenoid
Audio and VideoThe video drivers for the LCD panel, the color EVF (electronic view finder) and the NTSC output are on the PD- 155 board. The audio driver for the speaker and the microphone preamp is on the FR-181 board.
FlashThe flash unit is recessed and pops up when flash is needed. It is replaced as a complete module. The flash circuits are split up in two boards: the charging circuit and storage capacitors are located on the BT-006 board; the rest of the circuits are located in the flash module. The normally hidden flash module is under spring tension when recessed and is released by a solenoid when flash is needed., 14. DSC-F707 Lens Assembly
Chapter 14 - DSC-F707 Lens Assembly OverviewThis chapter describes the operation of the various lens electronic circuits. Although the lens assembly is replaced as a complete unit, an understanding of how it operates is important to enable the technician to determine if a problem is or is not caused by the lens. LENS ASSY. SY-072 BD.
FOCUS23 FOCUS AMOTOR FOCUS A IC202 21 FOCUS DRIVE M FOCUS B FOCUS FOCUS B DRIVE F SENS RST
SW ZOOMMOTOR 25 ZOOM A ZOOM A IC202 Z DRIVE M ZOOM B ZOOM28 27 ZOOM B
DRIVEZ SENS RST 18 IC301 SW Q206 CAMERA 19 3.2V DSP IR FILTER IR SENSOR MOTOR + 39 IC203 CONT.
M- IR FILTER36 DRIVE IR DRIVE IR SENS SW Q203 35 3.2V IR SENSOR
CONTROL SHUTTERMOTOR + 11 IC203 SHUTTER DRIVE M - SHUTTER8 DRIVE FIGURE 14-1 - F707 LENS ASSY. A 14DSC02 1499 10/10/02 Since the lens is replaced as single unit, repairs are not made to its internal components. Disassembling the lens will introduce dust that will degrade the picture quality and void the warranty. The lens consists of five motors, four position sensors, a laser light source and IR light sources. The CCD assembly is an integral part of the lens assembly., 14. DSC-F707 Lens Assembly
Circuit DescriptionSee Figure 14-1 Focus and Zoom 1. The focus and zoom lenses are driven by four phase dc pulse motors. Four pulsed lines drive the motors. 2. Motor direction is determined by the sequence that the motor lines are pulsed. 3. Both lenses have end sensors that determine the end positions of the lenses during initialization. 4. The lenses are initialized each time the camera is turned on. When initialized, the lenses turn to their end positions and trigger the sensor switches. 5. When the end sensor switches are triggered, their respective motors stop and registers inside IC301 are reset. 6. The registers in IC301 track subsequent lens motion by counting the number of pulses that are sent to the motors. The registers differentiate between forward and reverse drive pulses, allowing them to keep track of lens position regardless of motor direction. Shutter This is a simple mechanical on/off shutter in the lens light path that opens when the camera is turned on and closes when the camera is turned off. It blocks all light from the CCD when the camera is turned off. The shutter is controlled by a simple two terminal motor, driven by IC203. Do not confuse this shutter with the electronic shutter. The electronic shutter is an electronic gate to the CCD that determines the length of time that the CCD is actively “seeing” when the picture is snapped. IR Filter and IR Illumination Two infrared LEDs are used as light sources for shooting in very low or no light situations when the camera is in NightShot mode™. The IR LEDs are located in the front of the lens barrel and turn on in NightShot mode when the shutter is pressed. Since the CCD is made sensitive to IR light, a movable IR filter must be inserted in the light path during normal shooting and removed during IR shooting: • In normal non-NightShot operation, the filter is placed in the light path and blocks IR light from the CCD. • In NightShot mode, the filter moves away from the light path, allowing the IR light from the scene to reach the CCD. IR Filter Control • The IR filter motor is a simple two terminal motor driven by IC203. • The filter position is determined by the IR sense switch. Q203 provides a dc voltage to the switch when NightShot is enabled, allowing the IR sense switch to operate., 14. DSC-F707 Lens Assembly
IrisOperation LENS ASSY. FR-181 BD. IC204, IC205, IRIS CONTROL CN203 Q202 IRIS IRIS 12 MOTOR M
DRIVE13 CAM P 5V 17 HALL HALL (-) IC205 OFFSET IRIS POSITION BIAS (+) HALL IC207 SENSOR 16 BIAS IC205 EVR HALL (+) - A/D H 15 + CONV. BIAS (-) IC205, Q207 HALL AMP 14 GAIN CONTROL HALL LASER UNIT LD OUT GAIN LEVEL - LD IC253 LASER GENERATOR + Q258 IC252 COMP FB PD OUT PD IC501 MC CAM 1 CAM SH P 5V Q257 IR LED ON DSP IR LED's LED DRIVE FIGURE 14-2 - F707 LENS ASSY. B 15DSC02 1500 10/10/02 The iris motor operates as a servo motor and is controlled by the light level falling on the CCD imager. The iris opening is adjusted by a two terminal servo motor that is controlled by EVR IC207 and the iris drive ICs. The iris is spring-loaded, which keeps it at minimum open when no control voltage is applied to the servo motor. • The control voltage for the iris servo is provided by EVR IC207 and is determined by the average video level from the video amplifier (not shown). • The average video level is compared to a reference level. Video levels higher or lower than the reference will change the IRIS CTRL drive voltage output from EVR IC207. • An average video level below reference increases the IRIS CTRL voltage from the EVR IC and increases the iris opening. • An average video above reference level decreases the IRIS CTRL voltage from the EVR IC and reduces the iris opening. Hall Circuit The mechanical iris position is sensed by a hall effect device that provides iris position feedback via amplifier IC205 (4/4) to IC501. Feedback from the hall amp is also applied to the iris drive circuit in the form of negative feedback. This slows down the iris response and prevents iris over compensation when it is changing size. Without feedback, the picture brightness levels will oscillate between too light a picture and too dark a picture whenever the iris makes, 14. DSC-F707 Lens Assembly large adjustments; the slow response time from the video amp (remember, it is averaged) will cause the iris to over compensate and shoot pasts its optimal point, then swing back and overcompensate again in the opposite direction. The hall reference, hall gain and hall offset lines from the EVR IC compensate for large variations in component tolerances. Lens Initialization The lens is initialized when the camera is powered up and just prior to shutdown. Power-up Initialization: 1. The zoom and focus motors start turning towards their “reset” positions (zoom to wide angle and focus to near focus). 2. Once in the reset position, the focus and zoom position sense switches close, resetting the zoom and focus and position registers inside IC301. 3. When initialization has completed, Q206 turns off, cutting power to the sense switches. This prevents the registers from resetting during camera shooting. Power-down Initialization The zoom and focus motors turn towards their “home “ positions (extreme zoom and infinite focus) when camera shutdown is initiated; when done, the camera shuts off. NightFraming™ In low light situations, the IR laser light located in the lens barrel is turned on when the camera is in NightFraming mode. The laser light reaching the scene creates a hologram-like effect on the subject and that improves focusing. Operation The laser light is controlled by the EVR IC207, IC252, Q258 and IC253. • To turn the laser on, a dc voltage from EVR IC207 is applied to the inverting terminal of comparator IC252. This voltage is different with each camera and depends on the tolerances of the laser and the photo diode and in all instances it is higher than the inverting terminal voltage level. • A photo diode inside the laser module detects the IR light level reflected from the subject and feeds it back to comparator IC252 and IC501. If the reflected IR level is too low, as when the camera is too far from the subject for the laser to be effective, the comparator reverses its output logic level and the laser turns off, saving battery power. Features Disabled in NightFraming Mode The following features will not work in NightFraming mode: • AE lock • Manual Focus • Metering mode • Flash will not work in BURST and EXP BRKTG (bracketed exposure) modes. Operating Conditions for NightShot • NightFraming will not work under the following conditions: • An external filter must not be installed on the lens. Most filters block IR light. • The mode dial must be in the camera icon position (camera icon on the mode dial). • Conversion lens feature must not be enabled (if on, it can be turned off from the Setup menu)., 14. DSC-F707 Lens Assembly
ServicingThe lens, including the mounted CCD assembly, is replaced as a unit. Except for the manual focus ring in the front of the lens, no internal repairs are to be done to lens assembly. ? Error message E:61:00 or E:61:10 is usually an indication of a jammed lens assembly. Replace the lens. ? Shading (darker picture) on one side of the picture (usually the left side). This may be caused by a defective lens. See ESI service bulletin E16561506 for additional information. ? After replacing a lens, a complete camera realignment is required. ? The lens design allows the technician to look into the lens and see if the iris, zoom and focus lenses are moving. With experience, the technician can determine if the internal lens parts are moving properly. This is best done when the unit is turned on and off while looking into the lens. ? Use an IR indicator card or laser power meter to check if the laser is working (go / no go). If it is working, the laser light will go on in NightFraming mode when the shutter is pushed halfway down. ? The external focus ring can be repaired in case it falls off. Replace the three screws shown in the picture with self locking types, part number 3-056-559-01. Alternately, you can add Lock-Tite™ on the original screws and tighten them. ? Replacement lenses come without the laser flex board. The original one must be removed from the old lens and installed on the new one. This is very easily overlooked and the camera is then returned to the customer in this condition. Obviously, the low light features will not work. See Figure 14-3 ? To avoid ESD damage to the laser, use the precautions outlined below. Protecting Laser from ESD • The laser assembly is extremely sensitive to ESD voltages and easily damaged by it. To avoid ESD damage to a good laser LED, solder together the two solder pads on the laser assembly before replacing, Figure 14-3 handling or removing a good laser assembly. See figure 14-4. ? Make sure to remove the solder bridge once the laser assembly is in the unit. Figure 14-4, 14. DSC-F707 Lens Assembly
Lens Re-mounting The lens unit is electrically connected to the camera by the FP-421 flexible board. Due to the tilt and mountingdesign of the lens, this flexible board has multiple folds, bends, loops and adhesive sections that must be accurately replicated when reassembling the lens. The following diagrams show how a new flexible board is folded properly and how to route and coil it properly when reassembling the lens barrel. Folding New FP-421 Flexible Board Double-sided Adhesive tape Double-sided Adhesive tape Double-sided Adhesive tape Fold Double-sided Adhesive tape Flexible Board Routing 6 PT-130 Harness 8 FP-421 Flexible Board Note 1: Coil two and a half loops in the direction of the arrow 5 Hinge assembly 7 FP Holder 4 Two screws (M1.7) 2 Screw (M1.7) 1 Two flexible boards (CN701, 702) 3 Screw (M1.7), 14. DSC-F707 Lens Assembly
Focus Ring RepairsThe manual focus ring in the front of the lens can be replaced if broken or repaired if it simply falls off. FOCUS RING The ring should be repaired if it falls off and is not otherwise damaged. One of the following methods can be used: • Replace the three existing screws with self locking screws, part number 3-056-559-01, and torque them to 0.14 Nm (±0.02 Nm) • Remove and reinstall the original screws with Lock-Tite and torque them to 0.14 Nm (±0.02 Nm) The replacement part number for a broken ring is X-3952-003-1.
Uneven Picture ShadingDue to the sensitivity of some CCDs, on some units a few customers may complain of a slightly darker picture on the left side than on the right side. To determine if the brightness is within specs, refer to Electronic Service Information bulletin E16561506 for the procedure. Replace the lens assembly if it is out of spec., 15. DSC-F707 Power Supply
Chapter 15 - DSC-F707 Power Supply Power SupplySince troubleshooting is limited to identifying the defective board or module, the power supply description is limited to a circuit understanding for troubleshooting purposes. Refer to Figures 15-1a and 15-1b. BT-006 BD. F401, DC IN 2,3 CN403 CN001122UNREG1233UNREG2344CN401 UNREG 36 6 Q401, BATT./XEXT7 7 Q402 FAST CHARGE88FR-181 BD. Q403, INIT. CHARGE 404 F404 CN402 D40355F405 BATT. SIG + 111BATT.UNREG TO IC102 FRONTS 2 - 3 CONTROLBATT STB. CHARGE BATT. GND FLASH 11 11 TERMINAL DC-DC XTB FULL 12 12 CONV. TO POWER BLOCK 2 300VDC
FIGURE15-1a - F707 POWER SUPPLY 12DSC02a 1531 10/7/02, 15. DSC-F707 Power Supply V REF. CAM-7.5V -7.5VV REF. REG. UNREG 1 LCD -BLVO UNREG 1 Q015, Q016 PANEL-15.3V Q007 -15.3V 4 Q004, T001 REG. FB DC-DC +15V CAMERA +15V56 4 CONV. FB Q013, Q014 13.5V LCD PANEL UNREG 2 -15.3VREG. 5V Q005 BOOST 50 4.9V REG SYS A4.9V, PANEL30 37 DD ON FB UNREG 3 IC001 3.2V, PANEL 3.2V SHUTDOWN DC 64 Q009 PROTECTION CONTROL 3.2V REG UNREG 3 13 FB SCP Q010 CAM 5V 57 5V
REG18 FB UNREG 3 1.5V 27 OUT1VREF. 46 Q006, Q008 OUT 2 43 1.5V REG 1.5V 40 FB
FIGURE 15-1b - F707 POWER SUPPLY 12DSC02b 1532 10/8/02The power supply circuits are located on two boards: BT-006 and FR-181: • The BT-006 board contains the unregulated supply lines from the battery and ac adapter, and its fuses, the battery charging and ac adapter / battery switchover circuits, and the 300 volt dc–dc converter for the flash. • The dc-dc converters for all of the regulated power supply lines are on the FR-181 board. The dc-dc converters are controlled by dc-dc control IC001.
Converter Operation• With the exception of unregulated always-on voltages and an unregulated battery voltage, all voltages are produced by discrete switching circuits on the board. • The switching circuits are controlled and regulated by DC Control IC001, which provides the switching signals to the discrete switchers., 15. DSC-F707 Power Supply Camera +15V Line The circuit supplying Camera 15V is somewhat unique: it actually produces only 10 volts. To get a 15 volt output, the cold leg of its secondary transformer winding is connected to the A4.9V line instead of to ground. This boots the 10 volts to 15 volts. AC Adapter – Battery Switching Ac Adapter Connected • The ac adapter supplies the camera directly with power when it is connected to the camera. Q403/Q404 provides an initial charge to the battery and if it needs further charging, fast charge transistors Q401/Q402 turn on. • Switch Q401/Q402 provides the battery with a fast charge when the battery charge is low. The switch is controlled by the FAST CH line from SY-68 board via CN701/pin 37. • After the battery has fully charged, switch Q401/Q402 opens and the battery is isolated from the ac adapter. Ac adapter Not Connected • The battery supplies power to the unregulated supply lines via switch Q403 / Q404 / D403 and fuses F401 through F404. • Switch Q403/Q404 remains closed until the battery is nearly discharged, at which point the switch opens, cutting off power to the switching regulators. Unregulated Always ON Voltages The unregulated always-on voltage is fed to all circuits via four fuses - F401 through F404. Each fuse supplies a different section of IC001 and its respective external switching circuits. Another always-on line provides standby power the Front Control IC102 when the camera is disconnected from the ac adapter. IC001 Control Lines SYS DD ON UNREG 1 This is the master switch that turns the DC CONTROL IC ON/OFF. The line must be HIGH (3.2v) for the IC to operate. It is SCP controlled by FRONT CONTROL IC102. 13 IC001DC-CONTROL
SCP (Short Circuit Protection) NPN ICCAM -7.5V This is a short circuit protection line that Q017B monitors three negative voltage lines (PANEL -15.3V, CAM -7.5V, and –BLVO) NPN for short circuits or excessive loads. See CAM 4.9V Figure 15-2. Q017A PANEL -15.3V BLVO -20V
NPNQ001 A3.2V FIGURE 15-2 - F707 SHORT CIRCUIT PROTECTION, 15. DSC-F707 Power Supply • The lines are monitored by Q017A and B, and Q001. Each of these transistors also has a positive reference voltage applied to it. • In normal operation, the base of the transistors is approximately 0V. • The transistors will turn on if the negative voltages drops to the point that the transistor base rises to +1.3V. This puts the SCP line LOW and shuts down the power supply
TroubleshootingThe power supply circuit should be checked in the following order: 1. BT-006 board 2. FR-181 board 3. Short circuit protection. Checking BT-006 Board Since “live” troubleshooting is limited, the technician must make a determination if the problem is on the BT-006 or the FR-181 board. The BT-006 board is easier to troubleshoot in “passive mode” – with the unit off – and should be checked first. If the BT-006 board is ok, then the FR-181 board should be checked. Checking Fuses Fuses should be checked first. Their locations are shown in Figure 15-3. See caution on the following page “Discharging Storage Capacitors”. • Fuses are located on the ‘back’ side of the board • Fuses look like chip resistors • If a fuse is open, check the circuits that it feeds on the FR-181 board for shorts. Removing BT-006 board See next paragraph for caution before removing the BT-006 board. This board is easy to remove. With the camera back off: • Remove the FR-181 board (held by two screws). • Remove the battery holder. • Remove the BT-006 board. Figure 15-3, 15. DSC-F707 Power Supply
Discharging Storage CapacitorsCAUTION: Do not handle the BT-006 board without first discharging the flash storage capacitors. Make a discharge jig from a 1K ohm - 1W resistor (Sony pn: 1-215-869-11) and two hook clip leads. Checking FR-181 Board • The output voltages from the FR-181 board can be checked live at connectors CN301 and CN308. Set up the camera as shown in the picture so that the board can be checked live. • If there are no output voltages, check if the SCP line with an oscilloscope to see if the line goes LOW. If it does, then the problem may be caused by a short or overload in the lens assembly, the SY-072 board or PD-155 board. Disconnect them one at a time., 16. DSC-F707 Flash Circuit
Chapter 16 - DSC-F707 Flash Circuit OverviewThe flash on this model is a pop-up flash that automatically pops up when flash is needed. • The flash assembly is under spring tension in the closed position. It is held there by a plunger. • When flash is required, a solenoid releases the plunger and the flash pops up. • The flash assembly must be pushed down manually to close it.
OperationDC UNREG BT-006 BD. Q408,T401 F405 FLASH DC- 300VDC CN404 DC CONV. 1 Q405, Q406 FLASH Q409 STORAGE + + FLASH CAPACITORS CHARGE DET. CHARGE ON/OFF EVER 300VDC CN403 3V 11 12 STB-CHARGE BATT./
FLASHXSTB- FULL CHARGE IC102 XSTB
LED FRONTCONTROL XSTB-POP-UP STB-PLUNGER FLASH FR-181 BD. POP-UP POP-UP FLASH SOLENOID SWITCH ON LENS PHOTO-TR-OUT IC301 FP-488 BD. PHOTO-TR-ON CAMERA XSTRB-ON DSP.
PHOTOTR. SY-072 BD. FIGURE 16-1 - S707 FLASH UNIT 16DSC02 1503 10/10/02 The circuits controlling the flash are dispersed on four boards and the lens. Therefore, a somewhat detailed description of the flash operation is needed so that the technician can isolate the flash problem to a particular board. 1. The 300 volts dc-dc converter on the BT-006 board charges the two flash storage capacitors., 16. DSC-F707 Flash Circuit 2. Q405/Q406 switches power to the converter on and off and is controlled by the CHARGE ON/OFF line. To initiate the charge cycle, IC102 on the FR-181 board outputs a HIGH on the STB_CHARGE line. The battery charge lamp blinks while the capacitors charge up. 3. Once the capacitors have fully charged, the FLASH CHARGE DETECT circuit outputs a LOW, which overrides the HIGH on the STB_CHARGE line. This shuts off the flash dc-dc converter. 4. The FLASH CHARGE DETECT also outputs a LOW on the XSTB_FULL line to IC102, informing it that the flash is ready to fire. The camera will not take a picture if flash is needed and the XSTB_FULL line is did not go LOW. 5. When the shutter is pressed down partially and the camera detects that flash is needed, the STB-PLUNGER line from IC102 outputs a HIGH, triggering the flash pop-up solenoid and popping up the flash. 6. The pop up switch closes when the flash reaches the up position, pulling the XSTB_POPUP line LOW and signaling IC102 that the flash is ready. The camera will not take a picture if flash is needed and the XSTB_POPUP line is not LOW. 7. When the shutter is pressed fully down, XSTRB_ON from CAMERA DSP IC301goes LOW, firing the flash. The flash duration is determined by the pulse width. 8. The photo transistor inside the lens controls the on time of the flash. The output from the photo transistor is applied to CAMERA DSP IC301. Once sufficient light has reached the CCD, IC301 switches the XSTRB_ON line HIGH, turning off the flash.
CAUTION – SHOCK HAZARDX Never touch any exposed part of the flash assembly without first discharging the storage capacitor. Make a jig from a well insulated 1K 1W resistor to discharge the capacitor.
ServicingDischarging Storage Capacitors CAUTION: Do not handle the BT-006 board without first discharging the flash storage capacitors. The capacitors charge up when the camera is turned on and can maintain a charge even after the unit has been off for many hours or days. Make a discharge jig from a 1K ohm - 1W resistor (Sony pn: 1-215-869-11) and two hook clip leads., 16. DSC-F707 Flash Circuit Since the flash circuits and its control lines are spread out over a number of boards, the basic troubleshooting procedure is to identify the board or the flash module causing the problem and replace it.
ProcedureThe best diagnostic tool is the yellow indicator LED that blinks while the flash capacitors are charging. ? The indicator LED starts blinking when IC102 outputs a LOW on the STB_CHARGE line (the capacitors charge up) and turns stops when the XSTB_FULL goes LOW and the capacitors are charged. ? The LED will continuously blink if the capacitors do not charge up. This is an indication that the dc-dc converter, Q405/Q406 and /or F405 may be defective. ? LED does not blink. This is likely to be caused by IC102 on the FR-181 board not outputting a HIGH on the STB_CHARGE line. LED blinks normally then shuts off normally but the flash does not work: The following items may be defective: ? Pop-up solenoid ? Flash Assembly ? Pop-up switch ? FRONT CONTROL IC102 (not responding to XSTB_POPUP) ? A viewfinder error code of E:91:oo indicates a charging defect and the flash assembly may have to be replaced. ? Excessively blue picture when using flash Checking the charge on the storage capacitors The charge on the storage capacitors may be checked with a DVM if precautions normally associated with high voltage are taken. USE CAUTION WHEN CHECKING STORAGE CAPACITORS – A fully charged capacitor stores up to 300 volts for days.
Blue FlashCameras with an overly blue picture should be sent to Sony for repairs. The repairs require expensive equipment that is not normally available. Refer to ESI bulletin E14843941, 18. DSC-F707 Camera Switches
Chapter 17 - DSC-F707 Jigging CameraA defective SY-072 board should be replaced and not be repaired under warranty. The old board should be returned for core credit, as per Sony policy. The board is located on top of the lens assembly inside the lens barrel housing. It is accessible after the lens housing is removed. ? You can check the SY-072 board and the lens assembly “in circuit” with an extender ribbon cable. ? The camera must be fully aligned after the board is replaced. To reduce the alignment time, whenever possible use Radar W to upload and save the data from the original SY board to the computer then download it back into the new board., 18. DSC-F707 Camera Switches
Chapter 18 - DSC-F707 Camera Switches OverviewThe camera uses a variety of push button, rotary and slide switches that are mounted on flex board assemblies. These switches are located on the rear cover, the front cabinet and on the lens assembly. Most switch terminals are not easily accessible when the camera is operating. When a switch stops responding, either the switch became defective or a break occurred in its associated flex assembly. In either case, the flex board must be replaced.
TroubleshootingShorted Switches ? In most cases, the camera will be “dead” if a momentary contact switch shorts. The shorted switch will prevent other switches - including the power ON/OFF switch - from operating. ? If a shorted switch is suspected, the best method of determining which switch is shorted is to disconnect the switch ribbon cables, one at a time, press the reset button after each try (a shorted switch is likely to latch up the camera), then attempt to power up the camera. After a few tries, the defective flex assembly will become obvious. Open Switches Open switches can be checked with a Service RM-95 jig to determine if it or the flex board is open. This method allows the switches to be checked “live” without disassembling the camera. Without the RM-95, the unit must be disassembled and the switch contacts checked with an ohmmeter at a flex board while simultaneously pressing the switch (not an easy task). Testing with RM-95 1. Connect the Service RM-95 to the interface jig and power up the camera. 2. With the RM-95, proceed to data page 2, 3. To check a particular switch, go to the address listed in the table for the switch then activate the switch. If it is working properly the data shown in the table will be displayed in the RM-95. Note that the active data is not fixed but can be within a range of numbers shown in the table. For example, when pressing the Control Down switch, any data between 00 and 0C at address 90 is acceptable. 4. On switches that include a bit number, the binary value of the internal register for that bit must be determined by using the hex to binary conversion table. The table converts the data displayed on the RM-95 to a binary register value. The least significant data bit displays the values of bit registers 0 to 3; the most significant data bit displays the values of bit registers 4 to 7., 18. DSC-F707 Camera Switches Data Page 2 Data Page 2 Switch Address, Data Switch Address, Data NightFraming/ 93, Normal=DE-FF Mode Dial SCN 94, 68-A8 NightShot NightShot=75-A6; Mode Dial M 94, 3E-67 NightFrame=A7-DD Mode Dial A 94, 15-3D Menu 90, 28-48 Mode Dial S 94, 00-14 Index 90, 49-74 Mode Dial Camera 94, D1-FF Display 91, 49-74 Mode Dial Movie 94, A9-D0 Mode Dial Play 80, bit 1=0* Finder/LCD 90, Finder=A7-DD Mode Dial Setup 86, bit 6=0* LCD=DE-FF Power 80, bit 0=0* * Use hex to binary conversion table +/- Exposure 93, 00-0C Shutter 80, bit 3=0* Shutter Lock 80, bit 4=0* Jog Dial Execute 93, 0D-27 Focus 92, Auto=DE-FF Manual=AD-DD AE Lock 92, 00-0C Metering Pattern 92, 0D-27 White Balance 92, 49-74 One Push 92, 28-48 White Balance Memory Stick 80, bit 5:* Sensor In=0 Out=1 * Use hex to binary conversion table RM-95 Hex Bit values number Bit 3 or Bit 2 or Bit 1 or Bit O or bit 7 bit 6 bit 5 bit400000100012001030011401005010160110701118100091001A1010B1011C1100D1101E1110F1111HEX TO BINARY CONVERSION TABLE, , Memory Stick and Cyber-shot are trademarks of Sony
All other trademarks are property of their respective owners©2002 Sony Electronics Inc. EMCS - A Service Company DSC021002 1 Sony DrivePark Ridge, New Jersey 07656 10/21/02 Reproduction in whole or part without written permission is prohibited. All rights reserved]
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