Casio QV-770 Service Manual
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Casio QV-770 Service Manual

Casio QV-770 Service Manual

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QV-770
(KX-773)
APR. 1998
INDEX
R

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Summary of Contents for Casio QV-770

  • Page 1 (without price) QV-770 (KX-773) APR. 1998 INDEX...

  • Page 2: Table Of Contents

    1-6. Current consumption ........................7 1-7. IrDA Test ............................7 1-8. Test program ...........................8 1. Standard test program (including QV-770 Built in ROM) ............8 2. Special test program (including QV-770 Built in ROM) ............12 Battery check ..........................12 Key check ..........................13 Last memory set ........................13 2.

  • Page 3: Specifications

    SPECIFICATIONS Item Specification Recording System Digital (JPEG base); PC Link software can be used to input images in CAM, JPEG, TIFF and other format. Signal System NTSC Recording Medium Flash memory (4 MB) Memory Capacity FINE; 30 images (Approx. 124 KB compressed) NORMAL;...

  • Page 4: Block Diagram

    BLOCK DIAGRAM KB–PCB KA–PCB 6-pin 6-pin KEY0 3.3V KEY2 KEY1 3.3V DA–PCB CA–PCB 27-pin CXD2310A1 CXA2096N 3.3V ICX098AK 15V optional 3.3V IrDA 3.3V3.3 3.3V CCDCS EPCS 15.0V CCDPS EPRB -5.5V CDS+AGC MCK32 EPSK 5.0V Processor EPDI 3.3V 3.5V CXD3120R IRISA AGND 3.3V IRISB...

  • Page 5: Adjustment

    Execute when replacing camera unit Load parameter in memory of camera unit. (Light box not needed.) (1) Set QV-770 to “PLAY” mode. (Computer communication does not work in “REC” mode.) (2) Connect QV-770 and PC with link cable RS-232. (3) Operate adjustment software on MS-DOS.

  • Page 6: Defect Correct

    To correct this use the data next to this. • Perform this adjustment after loading color parameters. (1) Set QV-770 to “REC” mode. (2) Start test program. (Refer to “1-8. Test program”.) (3) Choose “DEFECT CORRECT” from test program and execute.

  • Page 7: Strobe Check

    (2) Monitor the trigger waveform on digital oscilloscope and check the display. (3) Automatically recharged after shooting picture. Make sure that the DC in 6.0 V current does not exceed 1.2 A. (4) Set QV-770 to “PLAY” mode and check the display. Should not be white or too dark. Voltage Regulator DC6.0±0.1V...
  • Page 8 Strobe trigger waveform : 1 µ sec/DIV 1. Normal waveform TIME VOLTS : 1 V/DIV 757µV 1µV UERT First positive pulse. OK if second positive pulse is shown. First negative pulse. REPET SAVE ON ACQUIRE ON | OFF ON | OFF NORMAL ENVELOPE 2.

  • Page 9: Display Appearance When Using Flash

    Notes: • (1) and (2) should look alike. (3) should be darker than (2). • (1) and (2) should not be white or too dark. • QV-770 and test chart (Material that does not reflect) should be 70 cm apart. Strobe lens...

  • Page 10: Test Program

    3. BATTERY CHECK 4. KEY CHECK 5. LAST MEMORY SET 1. Standard test program (including QV-770 Built in ROM) (1) Turn power on while pressing “DISP” and “SHUTTER” buttons. (2) “WELCOME!” appears on the display followed by TEST MODE display.
  • Page 11 (1) Transaction (2) Display (4) Supplement (3) Check Utilized for brightness volt- 1. 10-step black Displays black and white Displays 10-step black and white bar on the When checking with an os- and white display bar gradated in 11 steps LCD and TV monitor age and contrast adjust- cilloscope, terminate it with...
  • Page 12 (1) Transaction (2) Display (4) Supplement (3) Check 6. Black color display Returns to Test mode dis- Provides black signal to Displays black on LCD and TV monitor. play by [+] or [-] buttons. LCD and TV monitor (Black level of VIDEO standard) Disables Auto Power Off Normal REC or PLAY modes The unit returns to normal...
  • Page 13 (1) Transaction (2) Display (4) Supplement (3) Check This mode is disabled when 9. IR TEST SLAVE Used for IrDA test together The unit does not show any FACTORY TEST display with IR TEST MASTER. This change on the display since the unit is turned off.

  • Page 14: Special Test Program (Including Qv-770 Built In Rom)

    2. Special test program (including QV-770 Built in ROM) (1) Turn power on at REC mode, then press “Mode” button twice and change to “Serial Recording mode” then turn power OFF. (2) Turn power on while pressing “DISP“ button and “SHUTTER” button.

  • Page 15: Key Check

    Key check • Displays “Digital” values for key input. 20TIMES KEY SAMOLING INTERVALS OF 10MS PUSH ANY KEY!! NO KEY 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 Note: •...

  • Page 16: Adjustment Of Pcb-Da

    2. Adjustment of PCB-DA Adjustment points of PCB-K773-DA — 14 —...

  • Page 17: Adjustment Of Vcc7, Vcc3, Voltage Check Of Vcc1

    CP100 = 5.0 ± 0.05 [V] (You can use an AC adaptor however, for the checking after repairs, apply above mentioned voltages.) 1. Set QV-770 to “PLAY” mode. (Computer communication does not work in “REC” mode.) 2. Connect QV-770 and PC with link cable.

  • Page 18: Adjustment Of Pcb-L

    3. Adjustment of PCB-L (PCB-LA/PCB-LB) Adjustment points of PCB-K773-LA Adjustment points of PCB-K773-LB — 16 —...

  • Page 19: Vcc3, Vcc5 Voltage Check La-Pcb

    (1) Monitoring CP710 (HDB) with a frequency counter, adjust VR720 so that the frequency will be 15.734 ± 0.1 [KHz]. Notes: • Disconnect CP705 and CP700, then connect PCB-LA and make sure CP705 (CSY) and CP710 (HDB) are synchronized. • Keep room temperature at 20 ± 10°C. QV-770 PCB-LB VCC2 (CP181) VCC8...

  • Page 20: Bl Drive Voltage Adjustment

    (1) Apply 5.0 ± 0.05 V to VCL0 and adjust VR900 so that CP901(VBL) will be 6.1 ± 0.1 V. Notes: • Make sure that the current consumption is not abnormally large. • CN920 is open. QV-770 PCB-LA VCL0 (CP101) (CP901) 3.3 V...

  • Page 21: Bright Voltage Setting And Contrast Adjustment (Pcb-La)

    (4) Keep waveform B at 2.1 ± 0.05V by adjusting Bright VR (VR304). (5) Keep waveform C at 2.9 ± 0.05V by adjusting contrast VR (VR303). Note: • Make sure that waveforms are not distorted. QV-770 3.3 V PCB-LA Waveform B...

  • Page 22: Tint Adjustment

    (You can use an AC adaptor however, for the checking after repairs, apply above mentioned voltages.) (1) Adjust VR301 so that the second and third pulses of VB (CP324) signal level will be the same. Notes: • Perform this adjustment after contrast adjustment. • Trigger FRP (CP305). QV-770 3.3 V PCB-LA 1 2 3 4...

  • Page 23: Disassembly

    DISASSEMBLY Numbers in the parethesis correspond to the numbers in EXPLODED VIEW. 1. Unscrew two screws (S1) on the bottom of the camera. two screws (S1) 2. Rotate the camera unit and unscrew two screws (S1). Open console cover (2), then unscrew two screws (S1). two screws (S1) two screws (S1) 3.
  • Page 24 4. Disconnect two flexible cables from PCB-DA ass’y and remove two connectors from PCB-L ass’y. connector flexible cable 5. Disassembly of upper case. Remove flexible cable from PCB-L ass’y, then remove SUB773-LB2 ass’y. flexible cable Unscrew four screws (S2) fixing PCB-L ass’y then remove it. four screws (S2) —...
  • Page 25 Unscrew three screws (S2) fixing backlight, then remove the backlight. three screws (S2) When assembling, make sure to put each sheet in order. diffusion sheet (10) filter sheet (9) LCM spacer (8) Remove two screws (S2) fixing PCB-K773-KB ass’y (20), then remove PCB-K773-KB ass’y (20). two screws (S2) Remove LCD (6).
  • Page 26 6. Disassembly of Main case. Unscrew two screws (S4) fixing camera unit, then remove camera unit. two screws (S4) Remove PCB-K773A-KA (43). Unscrew two screws (S4) fixing PCB-K773-DA ass’y (24), then remove PCB-K773-DA ass’y (24). two screws (S4) — 24 —...
  • Page 27 7. Disassembly of Camera Unit. Unscrew one screw (S1), then disassemble as shown. one screw (S1) When assembling convex part of CCD should be placed with concave part of F knob. convex part concave part Unscrew one screw (S3) and disconnect two flexible cables, them remove CCD unit. one screw (S3) —...

  • Page 28: Exploded View

    EXPLODED VIEW — 26 —...
  • Page 29 — 27 —...

  • Page 30: Parts List

    PARTS LIST DIGITAL PCB ASS'Y Item Code No. Parts Name Specification Applicable IC507 2012 5747 MB81V16165B50LPFTN IC508 2012 4347 TC58V32FT IC400 2114 5808 CXD3120R IC582 2105 3633 TC7S00FU-TE85L IC530 2116 0119 BA10358F-T1 IC550 2105 6398 LB1846M-TE-L IC515 2105 6378 MM1228XFBE IC150 2114 5806 TK11232BMCL...
  • Page 31 LINEAR PCB ASS'Y Item Code No. Parts Name Specification Applicable IC545 2105 6425 XC61AN3802MR IC150 2105 3374 RS5RM5045A-T1 IC300 2114 5840 IR3Y29BM IC160 2114 5841 R1220V332B-E2 IC900 2114 5842 S-8327E50MC-EKE-T2 IC920 2105 6463 TC7ST02FU-TE85L IC100 2105 6464 XC6371F453PR SWITCH SW150 3412 2002 SWITCH SPVC2-1-T...
  • Page 32 SUB LINEAR PCB ASS'Y Item Code No. Parts Name Specification Applicable SWITCH SW700 3412 1106 SWITCH/SLIDE SSSS212-12 IC770 2114 5805 NJM3414AV-TE1 IC700 2012 5983 CM7018L3-T4N IC780 2105 4501 RN5RL30AA-TR DIODES D700 7101 1194 DIODE/CHIP MA111-(TX) D721 2360 3060 DIODE/ZENER/CHIP MA8100-H(TX) D720 2390 1358 DIODE/VARICAP...
  • Page 33 MAIN BODY CONPONENT Item Code No. Parts Name Specification Applicable 6612 9180 GRIP K340982-1 6612 9250 COVER/CN K240813-1 6612 9350 LABEL/COVER K441321-1 6612 9540 CABLE/FLAT K441330-1 6613 0020 PCB ASSY/LINEAR K341115*1 2725 1347 MODULE/LCD COD18T1022RN 6612 9220 BUTTON/FRONT K340986-1 6612 9310 SPACER/LCM K441256-1 6612 9320...
  • Page 34 ACCESSORY I t e m Code No. Parts Name Specification Applicable 1014 9871 CASE/SOFT SC-773 5861 3578 STRAP ST-K775 1014 8773 CORD/VIDEO VC-K723-FC Notes: Q – Quantity used per unit R – Rank — 32 —...

  • Page 35: Printed Circuit Boards

    PRINTED CIRCUIT BOARDS D board (PCB-K773A-DA) — 33 —...
  • Page 36 L board (PCB-K773A-LA) — 34 —...
  • Page 37 L board(PCB-K773A-LB) CA board (PCB-K773A-CA) — 35 —...
  • Page 38 K board (PCB-K773A-KA) (PCB-K773A-KB) — 36 —...

  • Page 39: Schematic Diagrams

    SCHEMATIC DIAGRAMS DA-CIR-K0773AAA — 37 —...
  • Page 40 LA-CIR-K0773AAA — 38 —...
  • Page 41 LB-CIR-ZK0773AAA — 39 —...
  • Page 42 KX-CIR-ZK0773AAA — 40 —...
  • Page 43 KA-CIR-K0773AAA — 41 —...
  • Page 44 KB-CIR-K0773AAA — 42 —...

  • Page 45: Trouble Shooting

    TROUBLE SHOOTING Trouble 1 : No display • LCD connector or BL connector is OPEN. Insert connector. If broken, replace it. Trouble 2 : Erratic display when using strobe. • Interruption when using strobe. Refer to “1-4. Strobe check”. Trouble 3 : Cannot switch between REC/PLAY. •...
  • Page 46 CASIO TECHNO CO.,LTD. Overseas Service Division 8-11-10, Nishi-Shinjuku Shinjuku-ku, Tokyo 160-0023, Japan...

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