Casio QV-200B Troubleshooting guide

R
QV-200B(NTSC)
QV-200C(PAL)
AUG. 1997
(without price)
(KX-775)
REC
PLAY
DEL
MODEDISPEFFECTPROTECT
ON/OFF
POWER

CONTENTS
SPECIFICATIONS ......................................................................................... 1
BLOCK DIAGRAM ........................................................................................ 2
FLOW DIAGRAM........................................................................................... 3
POWER SUPPLY CIRCUIT OPERATION .................................................... 5
MEMORY RESET AND COLOR ADJUSTMENT.......................................... 8
TROUBLESHOOTING................................................................................. 11
DISASSEMBLY ........................................................................................... 12
PRINTED CIRCUIT BOARDS ..................................................................... 14
EXPLODED VIEW ....................................................................................... 16
PARTS LIST ................................................................................................ 17
SCHEMATIC DIAGRAMS ........................................................................... 22
WAVEFORMS.............................................................................................. 27

— 1 —
SPECIFICATIONS
Item Specification
1. Recording System Digital (JPEG based)/Field recording
2. Video Signal System NTSC (QV-200B)/PAL (QV-200C)
3. Recording Medium Built-in 4-Mbyte flash memory
4. Number of pages FINE (VGA)
NORMAL (Quarter-VGA)
5. Delete Functions Single page; All pages (with page protect feature)
6. Imaging Device 1/4-inch CCD (Total Number of Pixels: 360,000)
7. Lens Fixed focus with macro position; F2/f = 3.9 mm
8. Aperture F2/F8 manual switching
9. Focal Length F2/NORMAL : 0.6 m to ~
F2/MACRO : 12 cm to 14 cm
F8/NORMAL : 0.24 m to ~
F8/MACRO : 9 cm to 23 cm
(from lens protection filter)
10. Light Metering TTL center point by photographic element
11. Exposure Metering Aperture priority AE
12. Exposure Range EV +5 to 18
13. Exposure Adjustment –2 EV to +2 EV
14. Shutter System Electronic
15. Shutter Speed 1/8 to 1/4000 second
16. White Balance Automatic
17. Self-timer 10-second
18. Monitor 61,380-pixel 1.8-inch TFT low-glare color LCD; doubles as finder
19. Terminals DIGITAL; VIDEO OUT; DC IN 6 V
20. Power Supply Batteries (AA-size Alkaline or lithium batteries ×4)/AC Adaptor
21. Battery Life LR6 (AM3) AA-size alkaline batteries:
Approximately 130 minutes continuous operation (Play mode)
Recording for about 96 images (one image per minute)
FR6 AA-size lithium batteries:
Approximately 210 minutes continuous operation (Play mode)
Recording for about 180 images (one image per minute)
22. Dimensions 66(H) ×141(W) ×40(D)mm /
2.6" (H) ×5.5" (W) ×1.6" (D)
23. Weight Approximately 190 g / 6.7 oz (excluding batteries)
24. Accessories Wirst strap; soft case; special video cable;
Alkaline batteries (LR6 ×4); cleaning cloth
: 64 (approximately 480-kbit compressed)
: 192 (approximately 160-kbit compressed)

— 2 —
BLOCK DIAGRAM
Camera Unit Digital PCB
Linear PCB
Video out
Key PCB
Digital I/O
AC Adaptor
Battery
Lens CDD A/D
converter
IC703
LC99092-Z98
8 bit to 16 bit
converter
Color processor
IC602
KM29V32000T
32M bit
Flash memory
IC601
HM51W4260
4M bit DRAM
IC701
µPD482445LGW
4M bit VRAM
VRAM
controller Video
encoder
D/A
converter
IC700
HG51D291FE
Data
compressor
expander
Direct
memory
access
controller
Bus
state
controller
Serial
communication
interface
ROM
RAM
CPU
I/O
port
IC600
HD6437042Y04F
Power
supply LCD
Back
light
Power
supply
IC300
IR3P90Y1 (NTSC)
IR3Y21 (PAL)
Chroma circuit
IC400
MSM6770CGS
Display controller
IC702
µPD6461GS
On screen
display

— 3 —
Camera Unit
IC703
LC99092-Z98 IC700
HG51D291FE
IC701
µPD482445LGW
IC602
KM29V32000T
IC601
HM51W4260
IC600
HD6437042Y04F
Digital PCB
1
2
3
4
5
6
7
8
CCD A/D
Converter
IC703
LC99092-Z98 IC700
HG51D291FE
IC701
µPD482445LGW
IC602
KM29V32000T
IC601
HM51W4260
IC600
HD6437042Y04F
Digital PCB
2
3
4
5
6
7
8
Camera Unit
1
CCD A/D
Converter
FLOW DIAGRAM
REC mode
1Exposure and Analog to Digital conversion by Camera unit
28 to 16 bits conversion by IC703
3Storage for work
4Color processing by IC703: Ye,Cy, Gr →Y, By, Ry
5Storage for work
6, 7Video encode by IC700 and IC701: Y, By, Ry →Video
8Video out
When pressing the shutter button

— 4 —
IC703
LC99092-Z98 IC700
HG51D291FE
IC701
µPD482445LGW
IC602
KM29V32000T
IC601
HM51W4260
IC600
HD6437042Y04F
Digital PCB
1
2
3
4
5
6
Camera Unit
CCD A/D
Converter
1Reading from Flash memory and storage for work
2Expansion by IC700
3Storage for work
4, 5. Video encode by IC700 and IC701: Y, By, Ry →Video
6Video out
1Exposure and Analog to Digital conversion by Camera unit
28 to 16 bits conversion by IC703
3Storage for work
4Color processing by IC703: Ye, Cy, Gr →Y, By, Ry
5Storage for work
6Compression by IC700
7Storage for work
8Storage to Flash memory
PLAY mode

— 5 —
1
2
3
4
5
6
7
8
1
2
35
4
VCC1
VCC1
IC505
VCC1
VCC1
R515
Q514
1
23
C523
VCC3-1
VCC3-1
KEY0
KEY2
PON
KEY1
VCC3-1
VCC3-1
GND
GND
CN601
FU500 R516 IC507
C548
R511
C254
R514
C521
R517
R510
1 2 3 4
8 7 6 5
R512 Q503
R513 Q513
R509
Q512
1
1
1
23
2
2
3
3
C520
C531
++
OUT
VDD
GND
NC
NC
CK D Q GND
VCC
PR
CLR
Q
OUT
VCC
GND
INA
INB
3
2
1
4
5
1PON from
Key PCB
2APO from Pin 42
of IC600
6Voltage detection signal
3POB to Pin102
of IC600
4FACT from
Pin 36 of IC600
5Power ON to Pin 3 of Q505
VCC1 R623
IC506
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 SW900 on Key PCB
Auto power off signal (pulse) from pin 42 of IC600
Power on/off recognition signal to pin 102 of IC600
ON: H (VCC3) OFF: L (GND)
Forced power on signal from pin 36 of IC600
Forced ON: H (VCC3) OFF: L (GND)
ex. While writing to flash memory
Power on/off signal to pin 3 of Q505
ON: H (VCC1) OFF: L (GND)
Normal: H
Low voltage: L

— 6 —
Operation
NAND gate
Flip-flop
Voltage detector
1
37
6
CK
Q
PR
CLR
D
GND
VCC
Q
2
4
8
5
1
2
4
Power on
1. PON
2. APO
3. POB
4. FACT
5. Power On
6. Voltage
detection
Power off
1. PON
2. APO
3. POB
4. FACT
5. Power On
6. Voltage
detection
H (VCC1)
L
L
H (VCC3)
L
L
H (VCC1)
L
H (VCC0)
H (VCC1)
L
L
H (VCC3)
L
L
H (VCC1)
L
H (VCC0)
L
IC
IC505
IC506
IC507 Pin 1 (OUT)
H
L
Pin 2 (VDD)
> 3.2 V
< 3.2 V
Time Chart

— 7 —
Power off by APO
1. PON
2. APO
3. POB
4. FACT
5. Power On
6. Voltage
detection
Power off by low voltage detection
1. PON
2. APO
3. POB
4. FACT
5. Power On
6. Voltage
detection
H (VCC1)
H (VCC3)
L
H (VCC3)
L
L
H (VCC1)
L
H (VCC0)
H (VCC1)
L
H (VCC3)
L
L
H (VCC1)
L
H (VCC0)
L
Forced power on by FACT
1. PON
2. APO
3. POB
4. FACT
5. Power On
6. Voltage
detection
H (VCC1)
L
L
H (VCC3)
L
H (VCC1)
L
H (VCC0)

— 8 —
MEMORY RESET AND COLOR ADJUSTMENT
When the repairing or the following problems occured on QV-200, make the memory reset and the color
adjustment as shown below.
A)After replacement of Digital PCB or Camera unit
B) Memory error
C) No display caused by Memory error
D) Color tone problem
MEMORY ERROR
"Memory error" (#1 ~ #4) message appears on QV-200 camera, when an error is found in its flash memory. In
this case, the QV-200 is locked up and do not accept any operation except power on/off.
!
MEMORY ERROR
#1
CONSULT
THE OWNERíS MANUAL
It is required to reset the flash memory and adjust the color information.
NO DISPLAY CAUSED BY MEMORY ERROR
When the memory error occures, sometimes the display and back light do not work.
In this case, it is required the flash memory reset and color adjustment, same as the case of memory error.
COLOR TONE PROBLEM
In this case, do the color adjustment only.
REQUIRED TOOL
Light box: Handy 5000 (Code No.: 1904 5301) It used for QV-100 also.
Batteries for the light box: 4 ×LR20 (D) size alkaline batteries
Color temperature filter (Code No.: 1904 5363): LA-120 (Orange)
ND filter (Code No.: 1904 5362): ND-50 (Grey)
Adjustment software: SDJ775A.EXE
QV-Link software: LK-10V (For VGA)
TO SOLVE THE PROBLEMS
MEMORY ERROR
1. Save the image (CAM files) of the QV-200 to PC by using QV-Link software.
* Although the memory error #1 and #2 occures, sometimes the image can be transfered to PC.
The image transfer is impossible in the memory error #3 and #4.
2. Execute the memory reset and color adjustment by SDJ775A.EXE.
3. Reload the image to QV-200 by using QV-Link.

— 9 —
NO DISPLAY CAUSED BY MEMORY ERROR
No display problem sometimes occures by memory error, however it is easy to confuse it with the problem
caused no power. To distinguish them, execute the test mode of the QV-200.
* If the memory error causes no display, only the "TEST MODE" message is appeared on the LCD in the
test mode.
To enter the test mode;
Turn the power on while pressing the Shutter and MODE buttons. Then the "TEST MODE" message will be
appeared.
If the message is appeared, execute the memory reset and color adjustment like as the case of the memory
error.
* In this case, the image of the QV-200 cannot be saved.
COLOR TONE PROBLEM
Execute only the color adjustment. In this case the image of the QV-200 will remain.
OPERATION
1. Connect the QV-200 to PC with the cable.
2. Save the image to PC by using the QV-Link, if possible.
3. Turn on the power of the light box handy 5000, and keep more than 3 minutes, then measure the batteries
voltage and check if it is more than 5.3 V.
*The brightness value of the light box is not enough to the adjustment, if the time less than 3 minutes after
power on, and the batteries voltage less than 5.3V.
*Use alkaline batteries to keep the brightness value which is required.
4. Put the ND filter ND-50(Grey) on the center of the light box.
*Use the center of the light box to keep the brightness value which is required.
5. Put the lens of the QV-200 on the ND filter, turn the QV-200 on, and set the switches as follows;
QV-200 setting: REC, NORMAL, F8
*In the case of no display by memory error, enter to the "TEST MODE".
6. Execute the SDJ775A on MS-DOS, then the following message will be appeared on the PC.
*********************************
*COLORADJUSTMENT for KX775 *
* ver 1.0 *
*********************************
Now Formatting FlashMemory..............Done.
Gain adjust......
GAIN_H_MID = 59
Put the LA-120 filter on the ND-50 filter, then enter "0".

— 10 —
Be sure to check if the sensitivity value is in 53 ~ 59.
If the value is out of the limites, check the following matters;
Batteries voltage
Setting of QV-200
Filter
7. Put the Color temperature filter LA-120 (Orange) on the ND filter ND-50 (Grey), and put the lens of the
QV-200 on the LA-120, then enter "0"(Zero).
The following message will be appeared on the PC.
rglim_h = c4 rglim_l = 7d bglim_h = 169 bglim_l = f0
ryg = 69 byg = 6e
GOFS = 8
ADJ_ID : H'11ff
sum = H' 11037b4
Success!!
flashwrite OK.
Patch Write.
LUT Write.
finished!
8. Check the image of the QV-200, then reload the image which saved in PC, if necessary.

— 11 —
TROUBLESHOOTING
No Display
1. Check the fuse (FU500) on the digital PCB.
2. Check the fuse (FU100) on the linear PCB.
3. Check the jack (JK500) on the digital PCB.
4. Check the power switch (SW900) on the key PCB.
5. Check the flat cable between the digital and linear PCBs.
6. Check the back light.
7. Check the LCD.
No Display at Record Mode
1. Check the camera unit.
Defect of the Camera Unit
The camera unit must be replaced with whole unit when it is defective, because the precise adjustment is
required when the individual parts of the camera unit are replaced, and it can be done only at our factory.
(Except for replacing the outer case of the camera unit)

— 12 —
DISASSEMBLY
To disassemble the main unit
1. Open the battery cover, then unhook and
remove the grip.
Screw
Screw
2. Remove the screw.
3. Rotate the camera unit then remove the two screws
on the side of the unit.
Screw
Hook
Grip
4. Remove the two screws on the bottom of the unit.
Screw Screw

— 13 —
To disassemble the camera unit
Remove the screw and the camera case.
Screw
Hook
Hook
6. Remove the upper case at the top of the unit.
Push the " " part strongly and then open the upper case
as shown in the right figure.
5. Remove the battery cover and the upper case
at the bottom of the unit.

— 14 —
C313
C335
C309
C320
C323
D104
C128
R325 R322
C124 C122
R327
C331 R324 C329 C332
R326
R403R404 R302
R307R308
R337 R338
C112 R120
R306
C415 R428 C411
C418 R424
R420 R336
R314
C314
C319
R312
Q401
C410
D106
C326
C129
C127
SW100
1
L102
L105
Q100
C142
R114
Q101
Q150
1
IC101
Q102
C140
R115
C152 C151
R150
R413
C412 R402
C406
R310R309 C317
R315
R311
C315
R429
C416
R427
R100
R421
R323
C330
C306C304
C324
C143
C145
R406
R405
R407
C417
C110
C111
R113
C113 C146
C150
C126
R305
C336
C407 R414 C413
21
22
1
2
CN400
IC150
B
IC400
1
C120
D101
D102
D103
D105
R141
VR100
R110
R111R121
T150
L100
CN150
R142
C141
1
1
IC100
VR101
C401
C341
R408
R320
R321
C402
C409
R410
C408
C404
L303
C322
C307
C305
VR300
L101
FU100
VR400 R412
L400
VR302
VR303
VR301
R426
T100
1
1
R401
C346
R340
R333
C338 C327
C321 C318
R313
R303
R316
R332
R331
R328
R318
R409
R411
C405
R430
C325
C316
R334 C311
C303
C302
C301
R301
R300
C300
C312
C310
L300 C308
C337 R335
R304
R330 C333
C339
R319
R317
L103
VR304
H300
C144
C153
C100
C101
C125
C121
C123
IC300
1
PRINTED CIRCUIT BOARDS
LINEAR
Top View
Bottom View

— 15 —
C731 C537 C540
L502
CN601 L514
L512
C548
C542
C541
C546
C730
L540
L509
CN600
IC508
IC507 IC505 IC504 IC701
C533 C535
CN603 CN602
L643 L704
Q508
C544
H700
JK500JK700
JK600 CN604
1
IC509
IC601
1
IC703
1
IC605
1
C551
L503
Q610Q611
Q512
Q514
C712
L631
C534
C601
L501 L513
C532
C517R516
C521
R638R517
R605
C523
C629 L641
R515 R509 R606
C722
C531
C625
C611
R635
C612
R636
R626
R625
R607
D600 C718
R610 R612 L732
C719
C613
R519
Q609
C543
C547 R541
C500
FU500
D506
D500
D504
Q507
Q513
Q505
Q500
D505
Q506
Q503
Q700
Q701 Q702
Q613
D602
Q510 Q511
IC502
IC500
B
B
C720
C624
C732
NR700 NR701
NR703
NR702
C721
IC603
Q501
IC700
L507
L510
Q504
Q509
IC501
L504
IC503
Q502
F700
1
IC602
IC604
IC600
1
IC702
1
IC506
1
1
L505
L506
VR2
1
VR1
IC704
1
C605
C603
R608
C604
R640
R611 C526C606
L508 C626 R630
C527
IC606
R632
R631
R641 C608 R628
R528 R624
R616R622
R514
R623 C518 R629
R703
L511
C545
R705 R707
R615 L602
L601 L600
L620
C622
C714
R714 R713 L734
R708
R711
R706
R513 C524
R702
R634
R617
R527 C627
C623
R627
C602
R609
R603
C607
R614
R530
C525
R512
R511
C600 R510
C520
D601
D603 D604
D502
C704
R701 C705
C522
R700
R508
C550
R544
C530
R507
C506 R543
C504
R540
R500
R503 R637
C519
R620
R601 R602 R600
R506
R520
C511 C536
R621 R619
C510
R502
R504
C501
R542
C507
R501 R539
C512
R518
R505
C715
R704
R709
C707
Q612
D501
DIGITAL
Top View
Bottom View

— 16 —
EXPLODED VIEW
1
3
45
6
7
8
9
10
11
12
13
14
15
16
19
19 20
22
23
24
26
27
28
29
31
31
31
31
31
31
30
30
30
30
32
30
33
34
25
21
31
31
31
17
2
29-1
29-1-2
29-1-1
28-1
17-2
17-1
17-3 13-1

PARTS LIST
LINEAR PCB ASS'Y
Item Code No. Parts Name Specification Applicable Q R
Diodes
D101 7101 1194 DIODE MA111-(TX) Common 1 C
D102 2390 1379 DIODE/SCHOTTKY MA729-(TX) Common 1 C
D103 2390 1379 DIODE/SCHOTTKY MA729-(TX) Common 1 C
D104 7101 1194 DIODE MA111-(TX) Common 1 C
D105 2390 1379 DIODE/SCHOTTKY MA729-(TX) Common 1 C
D106 2360 2359 DIODE/ZENER MA8180-L(TX) Common 1 C
Fuse
FU100 3122 2772 FUSE/IC PROTECTOR ICP-S0.7TN Common 1 B
ICs
IC100 2114 3654 IC MB3800PNF-G-BND-EF Common 1 C
IC101 2114 3654 IC MB3800PNF-G-BND-EF Common 1 C
IC150 2105 3990 IC TC7S02F-TE85L Common 1 C
IC300 2114 3633 IC/LINEAR IR3P90Y-1 B (NTSC) 1 C
IC300 2114 5740 IC/LINEAR IR3Y21 C (PAL) 1 C
IC400 2015 0147 LSI MSM6770CGS-2K-6004 Common 1 C
Transistors
Q100 2253 0308 TRANSISTOR 2SD1119-R(TX) Common 1 B
Q101 2253 0308 TRANSISTOR 2SD1119-R(TX) Common 1 B
Q102 7911 0126 TRANSISTOR/DIGITAL DTC144EUAT106 Common 1 B
Q150 2253 0700 TRANSISTOR 2SK1485-T1 Common 1 B
Q401 2251 0189 TRANSISTOR 2SB1218A-R(TX) Common 1 B
Switch
SW100 3412 1106 SWITCH/SLIDE SSSS212-12 Common 1 C
Converter and Transformaer
T100 3065 0693 CONVERTER/DC-DC TTV6DD360M02 Common 1 B
T150 3012 1176 TRANS/INVERTER ETJ-09K002AM Common 1 B
Variable resistor
VR304 2775 0644 RESISTOR/SEMI-FIXED H0614D-10KB Common 1 C
Notes: Q – Quantity used per unit
R – Rank — 17 —

DIGITAL PCB ASS'Y
Item Code No. Parts Name Specification Applicable Q R
Diodes
D500 2390 2268 DIODE MA727-(TX) Common 1 C
D501 2390 1379 DIODE/SCHOTTKY MA729-(TX) Common 1 C
D502 2390 1379 DIODE/SCHOTTKY MA729-(TX) Common 1 C
D504 2390 2261 DIODE MA720-(TX) Common 1 C
D505 2390 2261 DIODE MA720-(TX) Common 1 C
D506 2390 1421 DIODE/SCHOTTKY MA738-(TX) Common 1 C
D600 7101 1194 DIODE MA111-(TX) Common 1 C
D601 2390 1379 DIODE/SCHOTTKY MA729-(TX) Common 1 C
D602 2390 1470 DIODE MA143A-(TX) Common 1 C
D603 2390 1379 DIODE/SCHOTTKY MA729-(TX) Common 1 C
Fuse
FU500 3632 0700 FUSE/IC PROTECTOR F1206A1R25FW-TP Common 1 A
ICs
IC500 2114 5607 IC TK11830MTL Common 1 C
IC501 2105 5985 IC RH5RH353B-T1 Common 1 C
IC502 2105 3969 IC RH5RH503B-T1 Common 1 C
IC503 2105 3689 IC RN5RG50AA-TR Common 1 C
IC504 2105 3976 IC RN5RL25AA-TR Common 1 C
IC505 2105 1407 IC/CMOS TC7S00F-TE85L Common 1 C
IC506 2105 5215 IC/CMOS TC7W74FU(TE12L) Common 1 C
IC507 2105 3983 IC RN5VL32AA-TR Common 1 C
IC508 2105 5999 IC XC6383F501MR Common 1 C
IC600 2012 5668 LSI HD6437042Y04F Common 1 C
IC601 2012 4424 LSI HM51W4260CLTT-7 Common 1 C
IC602 2012 4340 LSI KM29V32000T Common 1 C
IC603 2105 4305 IC TC7S04F(TE85L) Common 1 C
IC604 2105 6006 IC RN5VL30AA-TR Common 1 C
IC605 2105 5719 IC TC7W32FU(TE12L) Common 1 C
IC606 2105 3381 IC/CMOS TC7S14FU-TE85L Common 1 C
IC700 2012 4417 LSI HG51D291FE Common 1 C
IC701 2012 4354 LSI µPD482445LGW Common 1 C
IC702 2012 5642 LSI µPD6461GS-652-E1 Common 1 C
IC703 2012 5641 LSI LC99092-Z98 Common 1 C
IC704 2105 5992 IC MM1228XFR Common 1 C
Jacks
JK500 3501 8281 JACK HEC0811-010010 Common 1 C
JK600 3501 6538 JACK HSJ1169-012010 Common 1 C
JK700 3501 5439 JACK HSJ1456-01-210 Common 1 C
Transistors
Q500 2251 0189 TRANSISTOR 2SB1218A-R(TX) Common 1 B
Q501 2253 0308 TRANSISTOR 2SD1119-R(TX) Common 1 B
Q502 2251 0847 TRANSISTOR 2SB1386-T100R Common 1 B
Q503 2251 0189 TRANSISTOR 2SB1218A-R(TX) Common 1 B
Q504 2390 2863 FET 2SJ212-T1 Common 1 B
Q505 7911 0126 TRANSISTOR/DIGITAL DTC144EUAT106 Common 1 B
Q506 2251 0189 TRANSISTOR 2SB1218A-R(TX) Common 1 B
Q507 7911 0126 TRANSISTOR/DIGITAL DTC144EUAT106 Common 1 B
Q508 2253 0308 TRANSISTOR 2SD1119-R(TX) Common 1 B
Q509 2251 0847 TRANSISTOR 2SB1386-T100R Common 1 B
Q510 7911 0126 TRANSISTOR/DIGITAL DTC144EUAT106 Common 1 B
Q511 7911 0126 TRANSISTOR/DIGITAL DTC144EUAT106 Common 1 B
Q512 7911 0126 TRANSISTOR/DIGITAL DTC144EUAT106 Common 1 B
Notes: Q – Quantity used per unit
R – Rank — 18 —