CASIO QV770 Service Manual

QV-770

INDEX

(KX-773)

APR. 1998

(without price)

CONTENTS

SPECIFICATIONS......................................................................................................................................1

BLOCK DIAGRAM .....................................................................................................................................2

ADJUSTMENT ...........................................................................................................................................3

1-1. Loading color parameter ................................................................................................................3

1-2. Defect correct ..................................................................................................................................4

1-3. Strobe adjust ...................................................................................................................................4

1-4. Strobe check ...................................................................................................................................5

1-5. Display appearance when using flash. .........................................................................................7

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. Adjustment of PCB-DA....................................................................................................................14

Adjustment of VCC7, VCC3, voltage check of VCC1....................................................................15

Operation Check ..............................................................................................................................15

3. Adjustment of PCB-L .......................................................................................................................16

VCC3, VCC5 voltage check LA-PCB ..............................................................................................17

VCC2 adjustment and VCC7, VCC8, VEE2 voltage check ...........................................................17

VCO free run frequency adjustment ..............................................................................................17

BL drive voltage adjustment...........................................................................................................18

VCOM AC adjustment and VCOM DC coarse adjustment............................................................18

Bright voltage setting and contrast adjustment (PCB-LA) ..........................................................19

Color adjustment (PCB-LA) ............................................................................................................19

TINT adjustment...............................................................................................................................20

DISASSEMBLY ........................................................................................................................................21

EXPLODED VIEW ....................................................................................................................................26

PARTS LIST .............................................................................................................................................28

PRINTED CIRCUIT BOARDS ..................................................................................................................33

SCHEMATIC DIAGRAMS ........................................................................................................................37

TROUBLE SHOOTING ............................................................................................................................43

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; 60 images (Approx. 62 KB compressed)

ECONOMY; 120 images (Approx. 32 KB compressed) Imaging Element 1/4-inch CCD (Total Pixels: 350,000; Effective Pixels: 330,000) Lens Fixed focal point with macro position; F2, f = 3.9 mm Focus Range NORMAL: 70 cm to ∞

MACRO: 14 cm to 16 cm (From surface of protective lens) Light Metering TTL center priority by CCD Exposure Metering Program AE, Aperture Priority AE Exposure Range EV +5 to 18 Exposure Correction –2 EV to +2 EV (1/4 EV units) Shutter CCD shutter Shutter Speed 1/8 to 1/4000 second White Balance Automatic, Fixed Self-timer 10 seconds Flash Modes Auto Flash, Flash On, Flash Off Resolution Modes FINE, NORMAL, ECONOMY Monitor/Viewfinder 1.8” TFT, low-glare color LCD (122,100 pixels) Computer output image 640 × 480 pixels Input/Output Terminals Clock January 1, 1997 00:00:00 to December 31, 2049 11:59:59 (Auto calendar) Power Supply Four batteries (AA-size alkaline or lithium batteries) /AC adaptor (AD-C620) Power consumption Approximately 6.8 W Battery Life Continuous Playback: Alkaline Batteries (LR6); Approx. 190 minutes

Dimensions 129(W) × 66(H) × 38(D) mm Weight Approximately 200 g Accessories Wrist strap, soft case, Alkaline batteries (AA-size × 4), Video cord

DIGITAL OUT, VIDEO OUT, AC adaptor connector

Lithium Batteries (FR6); Approx. 320 minutes

Continuous Recording: Alkaline Batteries (LR6); Approx. 690 shots

Lithium Batteries (FR6); Approx. 1,430 shots Note: The values noted above indicate the number of hours before battery failure under normal operating temperature (25 °C), as estimated by battery manufacturers. These values are for reference only, and do not guarantee that any particular set of batteries actually will provide the service life indicted. Low temperatures shorten battery life.

— 1 —

BLOCK DIAGRAM

3.3V3.3

Photo INT

Solenoid

ICX098AK 15V

CCD

CXA2096N 3.3V

CDS+AGC

ADC

CXD2310A1

optional

3.5V

3.3V

T.G

Vdr V

15V

-5.5V

CXD2450R 3.3V

EEPROM

High Voltage

Generator

Xe Lamp

Photo

Sensor

Comparator

IrDA

FLASH/M_MEMORY

EDO_DRAM

ROM

3.3V

MB91181

YUV

Processor

CXD3120R

Motor Drive

OSD

uPD6461

Controller

3.3V

3.1V

3.3V

15.0V

- 5.5V

5.0V

Battery Voltage

Voltage Controller

Signal

Generator

Video

RS232C

VIDEO RS232C

INTR

3.3V

5.0V

13.5V

7.5V

5.0V

-15.0V

3.0V

6.0V 5V, 7.5V

IR3Y29BM

Chroma

FUNC key

(PLAYB)

Detection SW

(RSTW)

Voltage Controller

Transformer

6.0V

AC_ADP

Display Controller (CM7018)

LCD module

VSH : VGH : VGL : VDD : VSS :

5.0V

13.5V

-15.0V

3.0V

GND

LED

CA–PCB

KA–PCB

KB–PCB

DA–PCB

LA–PCB

BLA–PCB, BLB–PCB

LB–PCB

COD18T1016 ***

Strobe Ass'y

Auto Iris Lens

KEY0 KEY1 PON

VCC0 VCC2 VR VG VB CSYNC HDB

FRP PLAYB VEE2 VCC8 GND

VSH VDD VR VG VB VSS MODE1

MLCK HCNT CLR OE SRTL SRTR VBC

CS VCOM MODE2 RESET GSRT GP CK VREFL

VGL VREFH VGH

27-pin14-pin

BL1 NC GND NC BL2

PLAYB SCH BL RTSW PW PW0

VIDEO VCC5 VCC3 VCCA VCC DGND GND

5-pin

18-pin

2-pin

27-pin

CCDCS CCDPS MCK32 MCK WEN SCK SD0 HR1 FR1 CCDRST CAGC CLPOB

AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 AD8 AD9 VCC3-2(CPU controlled

3.3V)

EPCS EPRB EPSK EPDI IRISA IRISB MAC1

15.0V

-5.5V

5.0V

3.3V AGND DGND

20-pin

STRG SCHG SCEND SECNT SCSEL 5V GND

Battery voltage

7-pin

IRIS+ IRISMAC1

Vcc3-2 GND

5-pin

3.3V GND

6-pin

LED KEY2

3.3V GND

3.3V

BR9040F

delete

Battery voltage

— 2 —

ADJUSTMENT

1-1. Loading color parameter

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.

PON773E. EXE

(4) Make sure PC’s monitor indicates that loading parameter is complete.

Note: When done continue the program in the following order.

1. DEFECT CORRECT

2. STROBE ADJUST

*********************************** * Prameter Installer * * for KX-773 * * Ver 1.60 * ***********************************

[OK]

Loading Parameter to Flash Memoty....OK.

Verifying data.....OK.

Adjustment complete.

Notes: • When NG is displayed check connections and settings.

• Use AC adapters.

Link cable

To digital terminal

QV-770

RS-232C port

[NG] (example 1)

Display when Failure occurs.

* * * Time Out Error * * *

[NG] (example 2)

Verify error unable to load parameter. Check camera.

— 3 —

1-2. Defect correct

When there is a blurred black dot in a white display it is called a defect. 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. (4) Make sure “ ” mark on LCD turns from red to blue.

(5) Turn power off.

Notes: • Make sure no light goes through CCD.

• As the adjustment data is written in the EEPROM by the POWER switch operation, do not forget to turn it off using the switch.

• Pixel compensations are performed up to two pixel defects.

• The compensation data is deleted once you exit the mode.

AD-C620

QV-770

Block CCD completely from light.

1-3. Strobe adjust

Execute after replacing strobe and loading color parameter, because strobe adjustment informations are deleted.

• Loading color parameter and Defect correct should be done before.

• Distance between strobe lens and gray paper should be one meter.

• The adjustment must be done in a dark room.

• For gray paper use Superior Oxford Gray No.22. (Note: Use lighter color surface of the paper.)

• The two sizes listed below are available as spare parts. (Can also found in camera store.) Code No. Name Specification

1904 5411 Gray paper of Superior Oxford No.22 (1.75 × 2.7 m) 1904 5412 Gray paper of Superior Oxford No.22 (2.72 × 11 m)

• For power supply use AC adapter.

(1) Set QV-770 to “REC” mode. (2) Start test program. (Refer to “1-8. Test program”.) (3) Choose “Strobe adjust” from test program and execute. (4) Shoot a picture of a specified gray paper. Flash icon should be red before shooting. (5) Make sure that the flash icon on LCD turns from red to blue. (6) Turn power off.

Note: As the adjustment data is written in the “EEPROM” by the “POWER” switch operation, do not forget

to turn it off using the switch.

— 4 —

LCD

Strobe icon

1 meter

Gray paper

✽ Gray paper should be larger than 1.5 m (H) × 2.0 m (W).

1-4. Strobe check

Checking if there is a false operation triggered by a distorted waveform when using strobe.

• Set strobe adjustment.

• Input DC in 6.0 ± 0.1 V.

(1) Set QV-770 to “REC” mode. (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

Ammeter

Regulator

DC6.0±0.1V

Digital oscilloscope

• Put oscilloscope probe on Camera unit.

• Earth of the probe should be hooked as shown above.

✽ If it is NG, make sure the wiring of strobe circuit.

— 5 —

TIME: 1.0 µsec/DIV VOLTS: 1V/DIV (AC)

Strobe trigger waveform

1. Normal waveform TIME : 1 µ sec/DIV

VOLTS : 1 V/DIV

CH1

First positive pulse.

ACQUIRE

NORMAL

2. NG waveforms when trigger skipping occurs.

(1) When trigger skipping occurs on the first

positive pulse.

OK if second positive pulse is shown.

First negative pulse.

ENVELOPE

757µV

AVS

(2) When trigger skipping occurs on the first

REPET

ON | OFF

negative pulse.

SAVE ON

ON | OFF

UERT1µV

— 6 —

1-5. Display appearance when using flash.

(1) Shoot picture with Normal F2. (2) Shoot picture with Normal F8. (3) Shoot picture with Macro mode Normal F8. (4) Set QV-770 to “PLAY” mode and check the display.

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.

Test chart

70 cm

Superior Oxford Gray No.22

Strobe lens

Monitor

QV-770

1-6 Current consumption

• Input DC in = 6.0 V ± 0.1 V.

(1) Set QV-770 to “REC” mode.

Maximum current consumption: 525 mA (Not including re-charge of strobe) Example: Maximum current consumption in “PLAY” mode: 371 mA

(2) Reducing the input voltage from 6V, make sure that the battery warning changes at 5.0V ± 0.1 V input.

1-7 IrDA Test

(1) Make sure no sunlight comes in. (2) Make sure there are no inverter light around. (3) Use black cloth to cover jig.

After making the adjustments above make sure communication is possible at ± 15° and distance of 50 cm. (Refer to User’s Manual for the infrared transport.)

QV-770

50 × COS (75) × –3.5 ×

8.5

IrTP sensor

Y 48 cm

50cm

75°

8.5 cm

× SIN (75)

48.0

IrTP sensor

QV-770

— 7 —

It must be 48 cm apart and lined up pararell. Make sure that TRANP communication is possible.

X : Distance between camera case edges. Y : Distance in straight line.

1-8. Test program Classified

1. Standard test program

1. 10STEP

2. COLOR BAR

3. CROSS HATCH

4. 50 PER. WHITE RASTER

5. GRAY RASTER

6. CLACK

7. APO OFF

8. IR TEST MASTER

9. IR TEST SLAVE

10. SEND ENQ TEST

11. RECEIVE ENQ TEST

2. Special test program

1. STOROBE ADJUST

2. DEFECT CORRECT

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.

TEST MODE

98030401 ADJ01.60 PTPXX.XX

ROM version ADJ version patch soft version

(3) Press “MENU” button and “Tran.P” button simultaneously to display the standard test program menu.

10 STEP COLOR BAR CROSS HATCH 50PER. WHITE RASTER GRAY RASTER BLACK APO OFF IR TEST MASTER IR TEST SLAVE SEND ENQ TEST RECEIVE ENQ TEST

(4) Press “–” and “+” buttons to select. Press “SHUTTER” button to execute the test.

— 8 —

(1) Transaction

(2) Display

(3) Check

(4) Supplement

1. 10-step black and white display

2. Color bar display

3. Cross hatch dis-

— 9 —

play

4. 50 percent white raster display

Displays black and white bar gradated in 11 steps

Provides color bar signal to the LCD and TV monitor (displays 75 % white level VIDEO signal)

Provides cross hatch signal to LCD and TV monitor (displays white line mesh on black display)

Provides brightness 50 % gray signal to LCD and TV monitor. Used for VCOM DC adjustment on PCB-L.

Displays 10-step black and white bar on the LCD and TV monitor

Displays color bar on the LCD and TV monitor

Displays cross hatch on LCD and TV monitor

Displays brightness 50% gray color on LCD and TV monitor.

Utilized for brightness voltage and contrast adjustment on PCB-L.

Make sure that white level 75% color bar is outputted from VIDEO OUT terminal.

Refer to page 18 for VCOM DC adjustment on PCB-L.

When checking with an oscilloscope, terminate it with 75 ohm resistance. Returns to Test mode display by [+] or [–] buttons.

5. Gray raster display

Provides brightness 50 % gray signal to LCD and TV monitor

Displays brightness 50% gray color on LCD and TV monitor.

When checking with an oscilloscope, terminate it with 75 ohm resistance. Returns to Test mode display by [+] or [–] buttons.

(1) Transaction

(2) Display

(3) Check

(4) Supplement

6. Black color display

7. APO OFF display

8. IR TEST MASTER display

— 10 —

Provides black signal to LCD and TV monitor (Black level of VIDEO standard)

Disables Auto Power Off function. This function can be utilized in REC or PLAY modes.

Used for IrDA test together with IR TEST SLAVE. This test sends ENQ (OX ø5) signal for 2 seconds with 10ms interval (115Kbps data transfer speed).

Displays black on LCD and TV monitor.

Normal REC or PLAY modes

FACTORY TEST

MASTER

ACTIVE

FACTORY TEST

MASTER

SUCCESS

Immediately after selecting IR TEST MASTER and pressed the shutter button.

When the unit received ENQ signal.

Make sure that the display indicates OK.

Returns to Test mode display by [+] or [-] buttons.

The unit returns to normal mode when power switch is turned off.

This mode is disabled when the unit is turned off.

FACTORY TEST

MASTER

FACTORY TEST

MASTER

TIMEOUT

When the unit received a signal other than ENQ.

If there is no answer for 2 seconds.

(1) Transaction

(2) Display

(3) Check

(4) Supplement

9. IR TEST SLAVE display

10. SEND ENQ TEST display

— 11 —

11. RECEIVE ENQ TEST display

Used for IrDA test together with IR TEST MASTER. This test sets the camera in standby mode to receive data. When the unit receives data, it sends back the data with 115Kbps transfer speed.

Used for IrDA test together with RECEIVE ENQ TEST. This test continuously sends ENQ (OXø5) signal with 10ms intervals (115Kbps)

Used for IrDA test together with SEND ENQ TEST. In this mode, the unit becomes receive standby status. When the unit receives a data, it discriminates if the data is ENQ signal. OK counter counts up when the unit receives 10 ENQ signals and NG counter counts up when the unit receives other signals than ENQ.

FACTORY TEST

SLAVE

ACTIVE

IRDA SELECT MENU

SEND

OK NG

00000 00000

The unit does not show any change on the display since this is subsidiary mode for IR TEST MASTER.

Discriminate the receiving operation by counting OK or NG counts.

This mode is disabled when the unit is turned off.

The data transfer result is shown on the reception unit. This mode is disabled when the unit is turned off.

This mode is disabled when the unit is turned off.

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. (3) “WELCOME!” appears on the display followed by TEST MODE display.

TEST MODE

98030401 ADJ01.60 PTPXX.XX

ROM version ADJ version patch soft version

(4) Press “MODE” button twice, then press “MENU” button and “Tran-P” button simultaneously to display

the special program menu.

STROBE ADJUST DEFECT CORRECT BATTERY CHECK KEY CHECK LAST MEMORY SET

(5) Press “–” button and “+” to select. Press “SHUTTER” button to execute the test.

Note: • Refer to “1-3. Strobe adjust”.

• Refer to “1-2. Defect correct”.

Battery check

• Used when measuring battery life.

(1) After selecting Battery check set intervals for taking pictures. (Maximum 30 seconds) (2) Press shutter button to enter “REC” mode. In this you can select Flash, or flash off or flash AUTO.

TOTAL SHOT 1

Number of pictures taken.

Notes: • TOTAL SHOT numbers will not remain in memory. (When batteries go dead they are deleted).

• Timers stop while WAIT is displayed. (1 shot takes 10 seconds). Does not mean 6 shots in one minute. Actually about 5.5 shots in one minut.

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+ 32 hidden pages