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Casio QV-780, Service Manual & Parts List

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Casio QV-780 Service Manual & Parts List Download Page 20

— 18 —

10.Lift up the buttom of the battery compartment and remove Holder/Battery 

3

 and PCB Ass’y/Digital.

11. Take Knob/Selector 

6

 and PCB Ass’y/Key 

5

 off the case.

Note: Knob/Selector 

6

 can be removed by unscrewing two screws 

f

 from the bottom of the knob.

12.Peel Grip 

K

 then remove one screw 

h

 from Panel/Rear 

J

.

Unclip the E-ring from Pin 

J

.

Note: Peel Panel/Rear carefully off Case/Lower 

E

 as it is attached with adhesive tapes.

Removing LCD Unit
13.Remove four screws 

l

 from PCB Ass’y/Linear 

a

.

Note: Before you remove Holder/Battery 

3

, be

sure that CompactFlash card release lever
is in upright position.

Summary of Contents for QV-780

Page 1: ...R QV 780 AUG 1998 without price KX 776 Ver 1 Aug 1999 ...

Page 2: ...ltage check 9 2 2 VCC7 VEE3 adjustment 9 2 3 Clock oscillation check 9 3 PCB K772 L Adjustment 10 3 1 VCC1 adjustment and VCC2 VCC6 VEE2 VCC0 voltage check 11 3 2 VCO free run frequency adjustment 11 3 3 Backlight drive voltage adjustment 12 3 4 VCOM AC adjustment and VCOM DC coarse adjustment 12 3 5 Brightness voltage setting and contrast adjustment 13 3 6 BCC 14 3 7 Color adjustment 15 3 8 VCOM ...

Page 3: ...Supply Four batteries AA size alkaline lithium or Ni MH batteries AC adaptor AD C620 Battery Life This camera can be power using AA size alkaline lithium or Ni MH batter ies The battery life reference values given below indicate the amount of time at standard temperature 25 C until power automatically turns off due to battery failure They do not guarantee that batteries will perform the amount of ...

Page 4: ...T Signal Generator Video RS232C EDO_ DRAM Flash Memory 3 3V 3 3V 3 3V 15 0V 5 5V 5 0V Battery Voltage Voltage Controller 5V VIDEO RS232C 3 3V CF AC Adaptor 6 0V 10 pin 3 0V 4 5V 18 0V 12 0V 10 5V Trans former 5 pin Battery voltage GND Battery voltage GND 7 pin Strobe Ass y Comparator Photo Sensor Xenon Lamp Battery Voltage Voltage Controller Detection Sw RSTW FUNC button LED Chroma IR3Y18A Display...

Page 5: ...193 of IC500 4 FACT from Pin 195 of IC500 IC588 VCC1 1 VCC1 1 VCC GND VCC GND 5 1 2 3 4 6 5 4 3 8 5 Power ON to Pin 1 of Q155 1 2 7 POWER SUPPLY CIRCUIT OPERATION 1 2 3 4 5 6 Signal PON APO POB FACT Power On Voltage detection Operation Power on off signal pulse from Key PCB Auto power off signal pulse from pin 202 of IC500 Power on off recognition signal to pin 193 of IC500 ON H VCC3 OFF L GND For...

Page 6: ...olor parameters loading Perform the following procedures when you replaced Camera Unit 1 Set the QV 780 in PLAY mode 2 Connect the camera and a computer with a link cable 3 Execute the following program on MS DOS system PON776 EXE for COM port 1 4 Loading is done successfully when computer monitor shows a message stating that loading is completed Note After the loading also perform the following S...

Page 7: ...ns in blue 8 Turn the POWER switch off As the compensation data is written in the EEPROM by the POWER switch operation do not forget to turn it off using the switch 1 3 Flash adjustment Perform this adjustment when you replaced the flash unit or after color parameter loading Preparation and condition Adjustments previously described should be completed Distance between flash cover and gray paper s...

Page 8: ...ue If it does not turn into blue IC531 might be faulty 6 Turn the POWER switch off As the adjustment data is written in the EEPROM by the POWER switch operation do not forget to turn it off using the switch 1 4 Flash check This test is to make sure that the flash circuit is not affected by undesirable electric noise Perform this test whenever you changed wirings of the camera unit Conditions Perfo...

Page 9: ...mode 2 Execute the test program Set the dial on PANORAMA MODE While holding down the SHUTTER and DELETE buttons turn the POWER on While TEST MODE is indicated on the LCD select the dial on Press MENU and buttons simultaneously LCD indicates CLOCK RESET STROBE ADJUST DEFECT CORRECT BATTERY CHECK 3 Set the QV 780 on PLAY mode and make sure that the picture taken is not too dark or too light 4 After ...

Page 10: ...s simultaneously LCD indicates 3 Using or buttons select a test mode then press SHUTTER 2 PCB K772 DA Adjustment Contents of the adjustment 1 VCC1 VCC3 checks 2 VCC7 VEE3 adjustments 3 Clock oscillation frequency check Checkpoints BLACK COLOR BAR APO OFF CP573 CP151 CP592 CP596 CP150 CP593 CP594 CP595 CP160 CP161 CP175 CP170 CP153 CP154 CP155 CP167 CP175 CP168 CP520 CP570 CP171 CP529 CP571 CP572 C...

Page 11: ...EE3 adjustment Apply 5 0 0 05 V on check point CP150 For normal check you can use an AC adaptor however when the camera is faulty apply the above mentioned voltage 1 Adjust VR650 so that VCC7 CP170 is 15 0 0 45 V 2 Adjust VR651 so that VEE3 CP171 is 5 5 0 2 V 2 3 Clock oscillation check Apply 3 2 0 1 V on lithium battery terminal CP578 Turn power off Room temperature should be 25 10 C 1 Use quartz...

Page 12: ...t and VCOM DC coarse adjustment 5 Brightness voltage setting and contrast adjustment 6 BCC adjustment 7 Color adjustment 8 VCOM DC fine adjustment Check points CP317 CP700 VR350 VR302 CP350 CP120 CP149 CP114 CP110 CP111 CP300 CP112 CP100 CP324 CP322 CP320 CP711 CP337 CP113 CP733 VR303 VR100 CP101 CP146 CP901 CP900 CP140 CP147 CP145 CP115 CP725 CP351 CP142 CP141 VR300 VR301 VR900 VR710 CP344 CP308 ...

Page 13: ... all the voltages are 0 V 3 2 VCO free run frequency adjustment Show color bar in test mode Apply 5 0 0 05 V on check point CP101 For normal check AC adaptor can be used however when the camera is faulty apply the above mentioned voltage Connect check points CP725 SYF and CP115 VCC0 1 Monitoring CP733 HDB with a frequency counter adjust VR710 so that the frequency is 15 625 0 1 KHz 2 Disconnect CP...

Page 14: ...t consumption is not abnormally large 3 4 VCOM AC adjustment and VCOM DC coarse adjustment Show color bar in test mode Apply 5 0 0 05 V on check point CP101 For normal check AC adaptor can be used however when the camera is faulty apply the above mentioned voltage 1 Make sure that the oscillation level of VCOM output CP351 is 6 0 0 3 V 2 Adjust VR350 so that the low level potential is 2 5 0 2 V Po...

Page 15: ...R302 so that pedestal voltage of VB CP324 signal is 5 0 0 1 V 3 Connect oscilloscope s trigger terminal to FRP CP711 for external trigger 4 Adjust VR303 so that potential between VB CP324 signal s pedestal and white peak is 2 9 0 1 V Make sure that the waveforms are not distorted After the adjustment disconnect the voltage supply of the killer terminal Do not turn BRIGHT VR until TINT and COLOR ad...

Page 16: ...is faulty apply the above mentioned voltage Adjust L300 so that four pulses of VB waveforms CP324 almost have no amplitude 1 Perform this procedure after contrast adjustment 2 Set the pedestal voltage of VB to 5 0 0 1 Vp p by adjusting BRIGHT VR VR302 3 Use FRP CP711 for trigger 4 If waveform changes by adjusting color perform Step 2 Power Supply Adjust to same level Oscilloscope L PCB VB terminal...

Page 17: ...d pass filter adjust VR350 to minimize the ripple of 60 Hz signal as shown below 3 7 Color adjustment Perform this procedure together with BCC adjustment Show color bar in test mode Power supply voltage VCL 0 CP101 5 0 0 05 V For normal check AC adaptor can be used however when the camera is faulty apply the above mentioned voltage Adjust VR300 so that the first 1 the second 2 pulse of VB waveform...

Page 18: ...1 Remove the CompactFlash card by pushing the release lever 2 Remove two screws j from the bottom of the camera 3 Unscrew two screws f from the lens side of the case Note Turn the lens as screws f are hidden by the Camera unit 1 4 Remove three screws h and one screw i from the CompactFlash card compartment Note Screw i is longer than the others Do not misplace it when you assemble the camera i ...

Page 19: ...lder a lead wire from PCB Ass y Linear a and disconnect FPC from the connector CN514 on PCB Ass y Digital Separate Case Upper R and Case Lower E 8 Remove two screws g and disconnect two connectors from PCB A ssy Digital then separate Camera unit 1 9 Remove two screws f from PCB Ass y Digital 2 and detach FPC from connector CN504 Unhook here ...

Page 20: ...y unscrewing two screws f from the bottom of the knob 12 Peel Grip K then remove one screw h from Panel Rear J Unclip the E ring from Pin J Note Peel Panel Rear carefully off Case Lower E as it is attached with adhesive tapes Removing LCD Unit 13 Remove four screws l from PCB Ass y Linear a Note Before you remove Holder Battery 3 be sure that CompactFlash card release lever is in upright position ...

Page 21: ...ake PCB Ass y Linear off the case Note Be careful not to bend or break the LED on the other side of the PCB 16 Remove Three screws l from BL ass y _ then remove the BL ass y Note Do not touch BL ass y with naked hand 17 Remove Spacer and Display Ass y Note Do not touch Display Ass y with naked hand Camera Unit 18 Remove three screws h and m ...

Page 22: ... electric shock Before proceeding to the following steps discharge 70 µF 300 V capacitor with a 1 5 kohm 5 W cement resistor 20 Remove two screws and disconnect two wires red and white 21 Remove Strobe unit 1 3 22 Remove two screws from the gear Peel off the adhesive tape wrapped around the case shaft 1 5 kohm 5W resistor ...

Page 23: ...sting the FPC cable and pulling out the connector throught the hole on the gear pull the gear out 24 Remove one screw l 25 Disconnect FPC cables from the connectors CN200 CN201 and CN501 then remove CCD unit 1 2 ...

Page 24: ... 22 PRINTED CIRCUIT BOARDS PCB K772 L Top view ...

Page 25: ... 23 Bottom view PCB K772 L ...

Page 26: ... 24 PCB K772 DA Top view ...

Page 27: ... 25 Bottom view PCB K772 DA ...

Page 28: ...bly is loose or broken 1 LCD connector of BL connector is open 2 IC701 is broken or bad soldering 1 IC531 is broken or bad soldering 1 Turn the Dial key until it makes a click sound when there is no click sound click spring of key assem bly may be broken or distorted 2 Replace SW502 1 Read P109 of Instruction Manual CF card can be handled the same way as hard drive Try the actions noted below 1 Se...

Page 29: ...nect connectors 2 Execute Loading color parameters 3 Replace L case assy or CL unit or CAM case unit 1 Noise when strobe flashes 1 Slide switch is broken or incorrectly assembled 1 Bad connection between DA assem bly and camera unit 2 Incorrect time data 3 Lithium battery is dead 4 Bad DA assembly 1 Refer to P8 29 30 31 and 112 of Instruction Manual 2 Current consumption is high 3 Kept battery in ...

Page 30: ...39 4 40 31 50 50 29 27 24 46 47 47 1 30 3 25 28 34 38 49 35 33 48 32 52 52 52 41 22 21 20 55 19 18 17 16 52 44 46 46 2 2 1 3 1 3 2 10 9 11 8 5 46 14 15 48 13 6 12 45 42 43 41 1 48 5 1 3 3 40 1 7 59 EXPLODED VIEW MAIN BODY ...

Page 31: ... 29 CAMERA UNIT 48 52 1 11 1 6 1 8 1 5 1 4 1 3 1 1 1 2 1 10 1 7 54 53 1 9 ...

Page 32: ...126 TRANSISTOR DIGITAL DTC144EUAT106 Common 1 B Q900 2253 0308 TRANSISTOR 2SD1119 R TX Common 1 B Q901 7911 0126 TRANSISTOR DIGITAL DTC144EUAT106 Common 1 B Q950 2253 0700 TRANSISTOR 2SK1485 T1 Common 1 B Switches SW140 3412 2080 SWITCH SSSS712 ZA Common 1 C SW141 3412 2002 SWITCH SPVC2 1 T Common 1 C Converter and Transformaer T100 3065 0711 CONVERTER DC DC 6CA 01 Common 1 B T900 3012 1477 TRANSF...

Page 33: ...1 C IC580 2105 5516 IC CMOS TC7W126FU TE12L Common 1 C IC582 6571 0037 IC L MOS TC7W00FU TE12L Common 1 C IC584 2114 5817 IC S 80936ANMP DD0 T2 Common 1 C IC586 2105 3521 IC CMOS TC7S08FU TE85L Common 1 C IC588 2105 5215 IC CMOS TC7W74FU TE12L Common 1 C IC651 2105 5999 IC XC6383F501MR Common 1 C IC652 2114 5607 IC TK11830MTL Common 1 C Jacks JK150 3501 6755 JACK HEC3600 010120 Common 1 C JK510 35...

Page 34: ... 2SD1119 R TX Common 1 B Q651 2259 2715 TRANSISTOR DIGITAL DTC144EETL Common 1 B Q652 2251 0882 TRANSISTOR 2SB1073 TX Common 1 B Q653 2259 2715 TRANSISTOR DIGITAL DTC144EETL Common 1 B Q660 2250 1579 TRANSISTOR 2SA1774TLR Common 1 B KEY PCB ASS Y Item Code No Parts Name Specification Applicable Q R I C IC600 2105 6398 IC LB1846M TE L Common 1 B Switches SW801 2254 0555 SWITCH ESE22MH4 Common 1 B S...

Page 35: ...612 7040 LABEL K440064 6 Common 1 X 10 6613 3300 BUTTON R240128 2 Common 1 X 11 6613 3310 BUTTON R340164 2 Common 1 X 12 6611 4340 ADHESIVE TAPE R440051 1 Common 1 X 13 6613 3320 BUTTON R340165 2 Common 1 X 14 6609 9680 CAP K340237 1 Common 1 X 15 6613 3291 CASE LOWER R140037A 2 Common 1 X 16 6612 8570 TAPE K441240 1 Common 1 X 17 6613 3240 LABEL RATING K441169 7 Common 1 X 18 6613 3216 COVER BATT...

Page 36: ... 0301 SCREW BT3 1 7X3 5 NI Common 7 C 47 5861 3111 SCREW PT3 1 7X5 5 Bk Common 2 C 48 5861 3549 SCREW PT3 1 7X3 5 NI Common 6 C 49 5860 9009 SCREW PT3 1 7X4 5 Bk Common 1 C 50 5861 3434 SCREW PT3 1 7X4 5 NI Common 2 C 51 5112 0906 SCREW BT3 1 7X5 0 NI Common 2 C 52 5860 1477 SCREW BT3 1 7X3 5 Bk Common 8 C 53 5112 0884 SCREW BT3 1 7X3 0 NI Common 1 C 54 5112 0868 SCREW BT3 1 7X5 0 Bk Common 1 C 55...

Page 37: ...me Specification Applicable Q R 58 5861 3578 STRAP ST K775 Common 1 X 59 1014 8773 CABLE VIDEO VC K723 FC Common 1 X 60 1014 9800 CASE SOFT SC 772 Common 1 X 61 3815 0796 LITHIUM BATTERY CR2016 CM1 Common 1 C Notes Q Quantity used per unit R Rank ...

Page 38: ... 36 SCHEMATIC DIAGRAMS PCB L772 L Chroma IC To Digital PCB To Back Light To LCD For Strobe Display Controller ...

Page 39: ... Circuit YUV Processor Video Signal Block Flash Memory CPU Data Expander Data Compressor Video Encoder Normal Macro Detector Power Supply Logic To Key PCB Change Current Controller CompactFlash Card Connector RS 232C Jack Video Out To Linear PCB Communication Block DRAM RTC On Screen Display Full charge detector Flash level adjustment ...

Page 40: ... 38 KEY ...

Page 41: ...vice Division Nishi Shinjuku Kimuraya Bldg 1F 5 25 Nishi Shinjuku 7 Chome Shinjuku ku Tokyo 160 0023 Japan Ver 1 PARTS LIST ITEM NO 1 correction on page 33 Correct 6613 3215 CAMERA UNIT K240748 2 Error 6612 6958 CAMERA UNIT K240748 1 ...

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