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.