Casio QV-200B Guida alla risoluzione dei problemi

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

CCD A/D

Converter

IC703

LC99092-Z98 IC700

HG51D291FE

IC701

µPD482445LGW

IC602

KM29V32000T

IC601

HM51W4260

IC600

HD6437042Y04F

Digital PCB

Camera Unit

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

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 —

VCC1

IC505

VCC1

R515

Q514

C523

VCC3-1

KEY0

KEY2

PON

KEY1

VCC3-1

GND

CN601

FU500 R516 IC507

C548

R511

C254

R514

C521

R517

R510

R512 Q503

R513 Q513

R509

Q512

C520

C531

OUT

VDD

GND

VCC

CLR

OUT

VCC

GND

INA

INB

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

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

CLR

GND

VCC

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)

H (VCC3)

H (VCC1)

H (VCC0)

H (VCC1)

H (VCC3)

H (VCC1)

H (VCC0)

IC505

IC506

IC507 Pin 1 (OUT)

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)

H (VCC1)

H (VCC0)

H (VCC1)

H (VCC3)

H (VCC1)

H (VCC0)

Forced power on by FACT

1. PON

2. APO

3. POB

4. FACT

5. Power On

6. Voltage

detection

H (VCC1)

H (VCC3)

H (VCC1)

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

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.

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