CASIO QV200B, QV-200C Service Manual

QV-200B(NTSC)
QV-200C(PAL)

(KX-775)

AUG. 1997

(without price)

MODEDISPEFFECTPROTECT

ON/OFF

POWER

DEL

REC

PLAY

R

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

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

: 64 (approximately 480-kbit compressed)
: 192 (approximately 160-kbit compressed)

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

— 1 —

BLOCK DIAGRAM

Camera Unit Digital PCB

Lens CDD

IC703
LC99092-Z98
8 bit to 16 bit
converter
Color processor

IC602
KM29V32000T
32M bit
Flash memory

A/D
converter

IC701
µPD482445LGW
4M bit VRAM

VRAM
controller

Data
compressor
expander

ROM

RAM

Direct
memory
access
controller

IC702
µPD6461GS
On screen
display

Video
encoder

D/A
converter

IC700
HG51D291FE

Video out

Linear PCB

IC300
IR3P90Y1 (NTSC)
IR3Y21 (PAL)
Chroma circuit

IC400
MSM6770CGS
Display controller

Power
supply

IC601
HM51W4260
4M bit DRAM

Bus

CPU

I/O
port

IC600
HD6437042Y04F

state
controller

Serial
communication
interface

Digital I/O

— 2 —

Power
supply

Back
light

AC Adaptor
Battery

Key PCB

LCD

REC mode

1

CCD

A/D
Converter

FLOW DIAGRAM

2

IC703
LC99092-Z98

4

6

IC700
HG51D291FE

8

Camera Unit

IC602
KM29V32000T

3

IC601
HM51W4260

1 Exposure and Analog to Digital conversion by Camera unit
2 8 to 16 bits conversion by IC703
3 Storage for work
4 Color processing by IC703: Ye,Cy, Gr → Y, By, Ry
5 Storage for work
6, 7 Video encode by IC700 and IC701: Y, By, Ry → Video
8 Video out

5

IC701
µPD482445LGW

IC600
HD6437042Y04F

7

Digital PCB

When pressing the shutter button

1

2

CCD

A/D
Converter

IC703
LC99092-Z98

Camera Unit

IC602
KM29V32000T

IC601
HM51W4260

4

8

3

5

7

— 3 —

6

IC700
HG51D291FE

IC701
µPD482445LGW

IC600
HD6437042Y04F

Digital PCB

1 Exposure and Analog to Digital conversion by Camera unit
2 8 to 16 bits conversion by IC703
3 Storage for work
4 Color processing by IC703: Ye, Cy, Gr → Y, By, Ry
5 Storage for work
6 Compression by IC700
7 Storage for work
8 Storage to Flash memory

PLAY mode

CCD

A/D
Converter

IC703
LC99092-Z98

Camera Unit

IC602
KM29V32000T

1

IC601
HM51W4260

1 Reading from Flash memory and storage for work
2 Expansion by IC700
3 Storage for work
4, 5. Video encode by IC700 and IC701: Y, By, Ry → Video
6 Video out

3

2

6

IC700
HG51D291FE

4

5

IC701
µPD482445LGW

IC600
HD6437042Y04F

Digital PCB

— 4 —

POWER SUPPLY CIRCUIT OPERATION

VCC1

R515

2 APO from Pin 42

of IC600

R517

1 PON from

Key PCB

CN601

KEY0
KEY2
PON
KEY1
VCC3-1
VCC3-1
GND
GND

FU500 R516

C548

1
2
3
4
5
6
7

VCC3-1

8

C531

VCC1

R511

++

R510

C520

R512

1

OUT

2

VDD

3

GND

VCC1

3

C254

VCC1

IC507

1

2

IC505

4

OUT

5

VCC

NC
NC

R623

Q503

GND

INA
INB

5
4

IC506

R513

3
2
1

C521

876

VCC

CKDQ

123

Q514

2

3

1

C523

6 Voltage detection signal

VCC3-1

5

Q

PR

CLR

GND

4

VCC1

2

1

3

Q513

R509

Q512

R514

2

1

3

3 POB to Pin102

of IC600

4 FACT from

Pin 36 of IC600

5 Power ON to Pin 3 of Q505

Signal

1
2
3

PON
APO
POB

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

Operation

ON: H (VCC3) OFF: L (GND)

4

FACT

Forced power on signal from pin 36 of IC600
Forced ON: H (VCC3) OFF: L (GND)
ex. While writing to flash memory

5

Power On

Power on/off signal to pin 3 of Q505
ON: H (VCC1) OFF: L (GND)

6

Voltage

detection

Normal: H
Low voltage: L

— 5 —

1

3

7
6

CK

Q

PR

CLR

D

GND

VCC

Q

2

4

8

5

1
2

4

IC

Operation

Time Chart

Power on

IC505

IC506

IC507

NAND gate

Flip-flop

Voltage detector

Pin 2 (VDD)

> 3.2 V
< 3.2 V

Power off

Pin 1 (OUT)

H

L

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)

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)

L

— 6 —

Power off by APO

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)

1. PON

2. APO

3. POB

4. FACT

5. Power On

6. Voltage
detection

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)

— 7 —

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 DISPLA Y 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 SOL VE 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.

— 8 —