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CASIO
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QV700
Service Manual
39 pgs2.05 Mb0
User Manual 2
25 pgs584.64 Kb0

CASIO QV700 Service Manual

R
QV-700
JAN. 1998
(without price)
(KX-772)
CONTENTS
SPECIFICATIONS ......................................................................................................................................1
WIRING AND BLOCK DIAGRAM ..............................................................................................................2
POWER SUPPLY CIRCUIT OPERATION..................................................................................................3
ADJUSTMENT ...........................................................................................................................................4
1. Unit Adjustment ....................................................................................................................................4
2. PCB K772-DA Adjustment....................................................................................................................8
3. PCB K77-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. Color adjustment ........................................................................................................................14
3-7. TINT adjustment..........................................................................................................................15
3-8. VCOM DC adjustment.................................................................................................................15
DISASSEMBLY ........................................................................................................................................16
PRINTED CIRCUIT BOARDS ..................................................................................................................22
EXPLODED VIEW ....................................................................................................................................26
PARTS LIST .............................................................................................................................................28
SCHEMETIC DIAGRAMS ........................................................................................................................34
— 1 —
Item Specification
Recording System Digital (JPEG base)
Signal System NTSC
Recording Medium Memory card (2 MB card included)
Memory Capacity FINE; 14 images (Approx. 133 KB compressed)
(2MB card) NORMAL; 26 images (Approx. 70 KB compressed)
ECONOMY; 47 images (Approx. 38 KB compressed)
Image Deletion Single image; all images in a folder, all images in memory (with image pro-
tection)
Imaging Element 1/4-inch CCD (350,000 pixels)
Lens Fixed focal point with macro position; F2, f = 3.94 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
Exposure Range EV +5 to 18
Exposure Correction –2 EV to +2 EV
Shutter CCD shutter
Shutter Speed 1/8 to 1/4000 second
White Balance Automatic
Self-timer 10 seconds, 2 seconds
Flash Modes Auto Flash, Flash On, Flash Off
Resolution Modes FINE, NORMAL, ECONOMY
Monitor 2.5” TFT, low-glare color LCD (84,480 pixels)
Computer output image 480 x 640 pixels
Input/Output Terminals
DIGITAL IN/OUT, VIDEO OUT, AC adaptor connector, memory card connector
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)
Battery Life Continuous Playback: Alkaline Batteries (LR6); Approx. 160 minutes
Lithium Batteries (FR6); Approx. 270 minutes
Continuous Recording: Alkaline Batteries (LR6); Approx. 600 shots
Lithium Batteries (FR6); Approx. 1,200 shots
Note: The above values are obtained based on Panasonic’s alkaline batter-
ies and Fujifilm’s lithium batteries. For your reference, the values when the
camera is operated with Duracell’s alkaline batteries are shown below.
Auto Play: Approximately 80 minutes
Continuous Recording: Approximately 170 images
Dimensions 147(W) × 69(H) × 50(D) mm/5.8”(W) × 2.7”(H) × 2.0”(D)
Weight Approximately 290 g/10.2 oz (excluding batteries)
Accessories Memory card, wrist strap, soft case, special video cable, Alkaline batteries
(AA-size × 4)
SPECIFICATIONS
— 2 —
WIRING AND BLOCK DIAGRAM
Photo INT
Auto Iris Lens
Solenoid
CB-PCB
ICX098AK
15V
CCD
15V
-5.5V
Vdrv
CXD1267AN
3.5V
CXA2056Q
CDS+AGC
CXD2310R
ADC
3.5V
BR9040F
EEROM
T.G
3.3V
CXD2452R
20-pin
23-pin
8-pin
KEY-PCB
DA-PCB
60-pin
3.3V
YUV
Processor
CXD3120R
3.3V
3.0V
Switching
RS5C316A
RTC
UPD6466
OSD
MB91181
Detection
Switch
3.3V
MACO
3.2V
INTR
CFDET
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 Controller
CM7013L2
4.5V
3V
26-pin
BL
LCD module
High Voltage
Generator
5-pin
CA-PCB
Motor Driver
IRISA/IRISB
Battery Voltage
L-PCB
3.3V
7-pin
3.3V
— 3 —
1
2
3
4
5
6
7
8
VCC1-1
IC582
IC582
VCC1-1
VCC3-1
VCC3-1
PON
KEY0
KEY1
KEY2
SHTTER
GND
GND
CN504
R593
C592
R592
1
2
3
4
8
7
6
5
R594
R585
Q588
R595
R579
Q583
2
2
3
1
3
1
C590
VCC1-1
Q582
1
3
2
5
4
IC584
IC586
1
2
3
FU152 R590
C525
+
OUT
VDD
GND
NC
NC
CK
D
Q
GND
VCC
PR
CLR
Q
1 PON from
Key PCB
VCC1-1
Q580
1
2
3
2 APO from Pin 202
of IC500
6 Voltage detection signal
3 POB to Pin193
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)
Forced power on signal from pin 195 of IC500
Forced ON: H (VCC3) OFF: L (GND)
ex. While writing to flash memory
Power on/off signal to pin 1 of Q155
ON: H (VCC1) OFF: L (GND)
Normal: H
Low voltage: L
— 4 —
ADJUSTMENT
1. Unit Adjustment
Contents of the adjustment
(1) Color parameters loading
(2) Scratch compensation
(3) Flash adjustment
(4) Flash function check
(5) Current consumption check
(6) Clock reset
(7) Other test modes
Necessary equipments
(1) IBM PC/AT compatible computer
(2) Computer link cable
(3) Digital oscilloscope
(4) Stabilized power supply
(5) Ammeter
1-1. Color parameters loading
Perform the following procedures when you replaced Camera Unit.
(1) Set the QV-700 in “PLAY” mode.
(2) Connect the camera and a computer with a link cable.
(3) Execute the following program on MS-DOS system.
PON772.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 Scratch compensation and Flash adjustment.
Digital terminal
To RS-232C
connector
When the loading is completed normally
********************************
* Parameter Installer *
* for KX-772 *
* Ver 2.10 *
********************************
Initializing QV-700 unit. OK.
Setting parameter on QV700. Finished.
When the loading is failed (example)
Initializing QV700 unit.
*** Time Out Error ***
When the loading is failed, check the
connection and settings.
— 5 —
1-2. Scratch compensation
“Scratch” is a black dot which appears dimly on a white screen. Three scratches are allowable on
350,000 pxels screen. Perform this adjustment after loading color parameters.
(1) Set the QV-700 in “REC” mode.
(2) Set the dial on “ ”.
(3) While pressing down the SHUTTER and DEL buttons, turn the power on.
LCD screen indicates “TEST MODE”.
(4) While TEST MODE is indicated on the LCD, select the dial on .
Press “MENU” and “ ” buttons simultaneously.
LCD indicates;
(5) Cover QV-700 lens so that the light does not go in the
camera.
(6) Using “+” or “–” buttons, select “DEFECT CORRECT” and
press the SHUTTER button to execute the program.
(7) Make sure that the small red square mark on LCD turns 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 should be one
meter.
• The adjustment must be done in a dark room.
• Use following gray paper for the testing.
Notes: •Use lighter color surface of the paper.
• Gray paper should be larger than the shooting area.
Though these papers are available from Casio, large camera stores handle them.
1 meter
Gray paper
Code No. Name Specification
1904 5411 Superior Seamless Paper No. 22 (1.75 x 2.7 m)
1904 5412 Superior Seamless Paper No. 22 (2.72 x 11 m)
CLOCK RESET
STROBE ADJUST
DEFECT CORRECT
BATTERY CHECK
— 6 —
DC6.0±0.1V
Voltage
Regulator
A
Ammeter
Put oscilloscope probe
on Camera unit.
Digital oscilloscope
TIME: 1.0¨ µsec/div
VOLTS: 1V/div (AC)
(1) Set the QV-700 in “REC” mode.
(2) Execute the test program.
• Set the dial on “ ”.
• 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;
(4) Use “+” or “–” buttons to select “STROBE ADJUST” and press the SHUTTER button.
(3) Shot a picture of the test paper.
(Flash indicator should be red before shooting.)
(5) Make sure that the flash icon turns from red to blue.
(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;
• Perform after the flash adjustment
• Use “ ” button to select Flash On.
• Apply 6.0 ± 0.1 [V] voltage on DC IN jack.
(1) Set the QV-700 in “REC” mode and press the shutter.
(2) Using a digital oscilloscope, monitor flash trigger pulse.
TIME: 1µsec/div
VOLTS: 1V/difv
OK if this peak is shown
Correct waveform
NG waveform
TIME: 1µsec/div
VOLTS: 1V/difv
2nd positive peak is not
shown.
CLOCK RESET
STROBE ADJUST
DEFECT CORRECT
BATTERY CHECK
— 7 —
If the following pictures are taken, it may be caused by faulty wirings.
To solve this problem, install the wires as shown below.
Shrinken
1-5.Current consumption
(1) Set the QV-700 in “REC” mode. After the flash circuit is fully charged, make sure that the current
consumption is less than 550 [mA] (for example, at PLAY mode, current consumption is 380 [mA]
when the flash is fully charged.
(2) Reduce the power supply voltage to 3.8 [V] and make sure that the low battery warning indicator
is shown.
1-6.Clock reset
Perform the following procedures when you replaced PCB K772-DA.
(1) Set the QV-700 in “REC” mode.
(2) Execute the test program.
• Set the dial on “ ”.
• 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-700 on “PLAY” mode and make sure that the picture taken is not too dark or too light.
(4) After the shot, flash is charged automatically. Observing the ammeter, make sure that the charging
current is less than 1.2 [A].
Red wire
White wire
— 8 —
(3) Using “+” or “–” buttons, select “CLOCK RESET” and press the SHUTTER button to execute the
program.
1-7.Other test modes
(1) Set the QV-700 in “REC” mode.
(2) Execute the test program.
• While holding down the “SHUTTER” and “DELETE” buttons, turn the POWER on.
• While TEST MODE is indicated on the LCD, press “MENU” and “ ” buttons 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
CP567
CP566
CP540
CP541
CP165
CP183
CP578
CP561
CP562
CP560
CP182
CP166
CP184
CP164
VR651
VR650
SW502
— 9 —
2-1. VCC1, VCC3 voltage check
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) At Power on;
VCC1 (CP164) ................. 3.2 ± 0.16 [V]
VCC5-1 (CP165) .............. 5.25 ~4.75 [V]
VCC5-2 (CP166) .............. 5.25~4.72 [V]
VCC3-1 (CP167) .............. 3.3 ± 0.17 [V]
VCC3-3 (CP168) .............. 3.3 ± 0.17 [V]
VCC3-4 (CP169) .............. 3.3 ± 0.17 [V]
(2) At Power off;
VCC3-1 (CP164) .............. 0 [V]
2-2.VCC7, VEE3 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 timer or frequency counter to measure clock frequency.
• Quartz timer; within ± 62 ppm
• Frequency counter (check point TC500 signal pad); 32.767 ± 0.002 [KHz}
(2) Current consumption; less than 1 [µA]
— 10 —
3. PCB K772-L Adjustment
Contents of the adjustment
(1) VCC1 adjustment and VCC2, VCC6, VEE2, VCC0 voltage check
(2) VCO free run frequency adjustment
(3) Backlight drive voltage adjustment
(4) VCOM AC adjustment and VCOM DC coarse adjustment
(5) Brightness voltage setting and contrast adjustment
(6) Color adjustment
(7) TINT volume 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
CP902
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