CASIO QV10AB Service Manual

QV-10A B(KX-723B)

(For NTSC)

APR. 1996

(without price)

CONTENTS

SPECIFICATIONS ......................................................................................... 1

BLOCK DIAGRAM ........................................................................................ 2

CIRCUIT OPERATIONS ................................................................................ 3

COLOR ADJUSTMENT............................................................................... 13

ADJUSTMENT............................................................................................. 15

TROUBLESHOOTING................................................................................. 18

DISASSEMBLY ........................................................................................... 19

ASSEMBLY ................................................................................................. 20

PRINTED CIRCUIT BOARDS ..................................................................... 21

EXPLODED VIEW ....................................................................................... 23

PARTS LIST ................................................................................................ 24

SCHEMATIC DIAGRAMS ........................................................................... 31

WAVEFORMS.............................................................................................. 34

SPECIFICATIONS

Item Specification

1. Recording System Digital (JPEG based)/Field recording

2. Video Signal System NTSC

3. Recording Medium Built-in 16-Mbit flash memory

4. Number of pages 96

5. Delete Functions Single page; All pages (with page protect feature)

6. Imaging Device 1/5-inch CCD (Total Number of Pixels: 250,000)

7. Lens Fixed focus with macro position; F2/f = 5.2mm

8. Aperture F2.8/F8 manual switching

9. Focal Length F2.8/NORMAL : 60cm to 310cm; F2.8/MACRO : 13cm to 16cm F8/NORMAL : 30cm to y; F8/MACRO : 11cm to 21cm (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 -2EV to +2EV

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

19. Terminals DIGITAL; VIDEO OUT; DC IN 6V

20. Power Supply Batteries (AA-size Alkaline batteries × 4)/AC Adaptor

21. Battery Life Approximately 120 minutes (Playback mode)

22. Dimensions 66(H) × 130(W) × 40(D)mm /

2.6" (H) × 9" (W) × 1.6" (D)

23. Weight Approximately 190g / 6.7oz (excluding batteries)

24. Accessories Wirst strap; soft case; special video cable; Alkaline batteries (LR6 × 4); cleaning cloth

— 1 —

Camera PCB 2222 Digital PCB

BLOCK DIAGRAM

Linear PCB

CCD

Flash Memory TC5816FT-1

D RAM HM514B00 ALJ8

Power Supply Circuit

Gate Array HG51B167FB

V RAM HM53812BJ8

CPU

HD6477034F16

HD6437034F16

IC300 IR3P90Y

IC400 MSM6770GS

VIDEO OUT (Video I/O)

DIGITAL (Serial I/O)

LCD

DC IN (6V)

AC adaptor Battery x 4

1 Camera Unit: It is used to provide color information.

2 Digital PCB: It controls the CCD, compressed data, stores image in memory.

3 Linear PCB: It generates the tricolor and controls the LCD display.

4 LCD: 61,380-pixel 1.8-inch Thin Film Transistor low-glare color LCD.

5 VIDEO OUT(Video I/O): Use this terminal when connecting to the VIDEO IN terminal of

a TV, video tape deck, video printer, or other similar device.

6 DIGITAL (SERIAL I/O): Use this terminal when connecting to a personal computer.

Key

Key PCB

— 2 —

CIRCUIT OPERATIONS

CAMERA UNIT (CAMERA PCB)

The camera unit is composed a lens, color filter, CCD (IC802), driver (IC800) and signal processor (IC802). It produces voltages R, B, and G, for the colors red, blue, and green when light from a scene is focused on the surface. These voltage values vary according to the intensity of the respective color being scanned.

The camera unit must be replaced with whole unit when it is defective, because the precise adjustment is required when the individual parts are replaced, and can be done only at our factory.

1 Lens

2 Color

Filter

Camera PCB

3 IC802 (CCD)

Ye,Cy,Gr color signal D0 ~ D7

CCD IN

PHI1~PHI4 PHS1~PHS4

IC800 Driver

VI1~ VI4 VS1 ~ VS4

4 IC801

Sample Hold, AGC

Timing Generator

8bit A/D Converter

MCK, HRS2, FTTRG, STTRG, CCODE, ENDFLG

Digital PCB

1 Lens Concentrates light rays to a point.

2 Color filter The striped color filter in front of the CCD detector is used to provide color information. It has three colors, yellow, green and cyan. Array of color filter and signal processing (IC801) for camera are extremely close relationship.

Data Bus

D RAM

CPU

1 2 3 ~ 506 507 508

Ye G Cy Ye G Cy Ye G Cy Ye G Cy Ye G Cy Ye G Cy

Ye G Cy Ye G Cy Ye G Cy Ye G Cy

Array of color filter

Red

White

Green

Cy=Blue+Green

Three Primary colors

— 3 —

Mg=Blue+RedYe=Red+Green

Blue

3 CCD (IC802)

A charge-coupled device in which charges are introduced when light from a scene is focused on the surface of the device. The image points are accessed sequentially to produce a television-type output signal.

Effective picture element: 249,936 = 508 (H) x 492 (V)

PHIS1~PHIS4: Clock pulse for the storage.

PHI1~PHI4: Clock pulse for the image pickup.

3 4

5 6

PHI4 PHI3 PHI2

PHI1

532(H)

508(H)

Image pickup

492(V)

500(V)

PHIH1~PHIH2: Clock pulse for the horizontal shift register.

PHIR: CCD analog signal output.

PHIR 7

VDD 8

Vout 9

Output

Amp.

VGG

VOG

Storage

Horizontal shift register (CCD)

PHIH2

PHIS4 PHIS1 PHIS2 PHIS3

PHIH1

19 18

17 16

12 13

4 Camera Signal Processor (IC801)

Sample Hold,

From CCD

to CCD

AGC

Timing Generator

Sample Hold Selects a desired signal from the CCD.

14 15

8bit A/D Converter

D0~D7

From/to CPU

D0~D7: Digital signal of the luminance and the color difference B-Y and R-Y signal.

CCD IN: CCD analog signal input.

VI1~VI4/VS1~VS4: Clock pulse for the CCD control signal.

Timing Genarator Generates the clock pulse for the CCD.

8-bit AD converter Analog signal from the CCD is converted into 8-bit digital signal of the luminance and the color difference B-Y and R-Y signal. .

— 4 —

DIGITAL PCB

Camera PCB

IC802 CCD

IC800

Driver

DIGITAL PCB

+5V

Power Supply

+18V

-10V

IC801

Processor

4 IC602

16M Flash Memory

5 IC601

4M D RAM

2 IC700 Gate Array

Control Timing

Data Compressor

V RAM Control

Encoder

1 IC600 Microprocessor

ROM

DMAC

CPU

I/O Port

SCI, Timmer

D/A

RAM

BSC

3 IC701

1M V RAM

Amp.

Linear PCB

IC300 Chroma Circuit

IC400 Display

Control

VIDEO OUTPUT (Video I/O)

TFT LCD

DIGITAL (Serial I/O)

DC in +6V

Key Input

Battery

Digital PCB is composed Microprocessor (IC600), D RAM (IC601), Flash Memory (IC602), Gate Array (IC700), and V RAM (IC701). Microprocessor controls the CCD, D RAM, Flash Memory and key operation. Gate array compresses data for the color and the luminance from the CCD to increase the number of memory, and up to 96 images can be stored in flash memory. The color and the luminance data are mixed in the gate array to make the video signal.

As to spare parts for digital PCB, Casio supplies PCB ass'y and the individual parts.

— 5 —

1 CPU (IC600)

Controls the CCD, D RAM, Flash memory and key operation.

1 CPU (IC600)

Controls the CCD, D RAM, Flash memory and key operation.

Port A Address

CS3 ~ CS0, A21 ~ A16PA15 ~ PA0

Reset, MD2 ~ MD0, EXTAL, XTAL

PROM/MASKROM1

CPU

Interrupt controller

Serial communication interface (x2channel)

User break controller

RAM1

Address

A15 ~ A0

Direct memory access controller

Direct state controller

16-bit integrated timer pulse unit

Data/Address

Programmable timing pattern controller

Port C

PC7 ~ PC0 PB0 ~ PB15

Address bus 24-bit

Data bus 16-bit

A/D converter

Port B

Address bus 24-bit

High-order 8-bit Low-order 8-bit

— 6 —

Timer

AD15 ~ AD0

CPU PIN FUNCTION

Pin No. Terminal Name IN/OUT Function

1 PB14 OUT Timing pattern output. 2 PB15 - Not used. 3 VSS IN Ground terminal.

4 - 11 AD0 - AD7 IN/OUT Address bus.

12 VSS IN Ground terminal.

13 - 14 AD8 - AD9 - Not used.

15 VCC IN Power source.

16 - 21 AD10 - AD15 - Not used.

22 VSS IN Ground terminal.

23 - 30 A0 - A7 OUT Address bus.

31 VSS IN Ground terminal. 32 - 33 A8, A9 OUT Address bus. 34 - 39 A10 - A15 - Not used.

40 VSS IN Ground terminal.

41, 42 A16, A17 - Not used.

43 VCC IN Power source. 44 - 47 A18 - A21 - Not used. 48 - 50 CS0 - CS2 - Not used.

51 CASL OUT CAS(Column Address Strobe) signal for D RAM.

52 VSS IN Ground terminal.

53 PAO - Not used.

54 RAS OUT RAS(Row Address Strobe) signal for D RAM.

55 CS6 OUT Chip select signal.

56 WAIT - Not used.

57 WR OUT Write enable signal for outer memory (low-order 8-bit).

58 PA5 OUT Write enable signal for outer memory (high-order 8-bit).

59 RD OUT Read enable signal for outer memory.

60 PA7 - Not used.

61 VSS IN Ground terminal.

62 PA8 IN Bus request signal.

63 PA9 OUT Interrupt request signal. 64 - 66 PA10 - PA12 - Not used.

67 DREQ0 IN Interrupt request signal.

68 IRQ2 IN Interrupt request signal.

69 PA15 IN Interrupt request signal.

70 VCC IN Power source.

71 CK OUT System clock pulse.

72 VSS IN Ground terminal.

73 EXTAL IN Clock pulse input.

74 XTAL - Not used. 75 - 77 VCC, NMI, VPP IN Power source.

78 WDTOVF - Not used.

79 RES IN Reset signal input.

80 MD0 IN Ground terminal.

81 MD1 IN Connected to VCC3.

82 MD2 IN Connected to ground.

83, 84 VCC IN Power source.

— 7 —

Pin No. Terminal Name IN/OUT Function

85, 86 AVCC, AVREF IN Connected to VCC3.

87 - 89 PC0 - PC2 IN Key input terminal.

90 PC3 IN Low battery detection terminal. 91 AVSS IN Ground terminal.

92 - 95 PC4 - PC7 - Not used.

96 VSS IN Power source.

97, 98 PB0, PB1 IN/OUT Port B.

99 VCC IN Power source.

100 - 105 PB2 - PB7 IN/OUT Port B.

106 VSS IN Ground terminal. 107 RXDO IN Data input terminal from a personal computer. 108 TXDO OUT Data output terminal to a personal computer.

109, 110 PB10, PB11 IN/OUT Port B.

111 PB12 - Not used. 112 PB13 - Not used.

2 Gate Array (IC700)

Control Timing

V RAM Control

V RAM

Encoder

Data Compressor

D/A

Data Compressor The color difference and the luminance data is compressed about 1/7 to increase the numer of images in memory. Up to 96 images can be stored.

Y (luminance siganal) data : 480 x 224 byte Cb (color difference signal B-Y) data : 160 x 112 byte 21,120 byte Cr (color difference signal R-Y) data : 160 x 112 byte 1/7

Total: 143,360 byte 21,120 byte

Encoder The color and the luminance data are mixed internally to make the video signal, and send it to the linear PCB and the video out terminal.

— 8 —

3 V RAM It is used for encoder function.

3 V RAM

It is used for encoder function.

4 Flash Memory

Up to 96 images can be stored in memory. Flash memory does not require electrical power

Up to 96 images can be stored in memory. Flash memory does not require electrical power to store

to store data, so image data is retained in memory even when you turn camera power off.

data, so image data is retained in memory even when you turn camera power off.

If batteries go dead, simply load a set of new batteries or connect the AC adaptor and you

If batteries go dead, simply load a set of new batteries or connect the AC adaptor and you will be able

will be able to view images in camera memory.

to view images in camera memory.

Memory Map

Header Image data Color record Max; 96 images Information

5 D RAM There is area of work space that the microprocessor uses for storing temporary data , the

5 D RAM

intermediate results of calculations, and all sorts of pieces of information that the system

There is area of work space that the microprocessor uses folr storing temporary data, the intermediate

needs to remember.

results of calculations, and all sorts of pieces of information that the system needs to remember.

6 Power Supply

6 Power supply

KEY PCB

Block Diagram

Key Matrix

VCC3-1

Terminal Voltage Purpose

VCC3-0 4.75 ~ 5.15 (V) Logic circuit VCC3-1 4.70 ~ 5.15 (V) Video output VCC3-2 4.60 ~ 5.15 (V) Digital I/O

VCC6 17.80 ~ 18.20 (V) CCD VEE3 -9.6 ~ -10.6 (V) CCD

BUTTON RESISTOR

KEY 0 KEY 1

KEY 2

CPU

87 pin 88 pin

89 pin

VOLTAGE BUTTON RESISTOR KEY MATRIX CPU

VCC3-1 Shutter R900(1.8K) KEY0 87pin VCC3-1 [+] R901(15K) KEY0 87pin VCC3-1 MODE R902(1.8K) KEY1 88pin VCC3-1 DISP R903(4.7K) KEY1 88pin VCC3-1 ZOOM R904(10K) KEY1 88pin VCC3-1 SELF R905(27K) KEY1 88pin VCC3-1 [-] R906(1.8K) KEY2 89pin VCC3-1 DEL R907(15K) KEY2 89pin

— 9 —

LINEAR PCB

IC300 generates the tricolor (red, green and blue) from the video signal, and IC400 controls

the TFT-LCD display.

Power Supply

Terminal Voltage Purpose

VCC2 4.3 ~ 4.7 (V) Logic circuit VCC4 9.5 ~ 11.0 (V) Display VEE2 -7.0 ~ -8.0 (V) Display VEE4 -16.5 ~ -17.9 (V) Display

IC300

SYNC-SEP

H.F.OUT

18 15 19 20 21 22 16 11 17 14 13 23 35 32 34 36

TRAP

SYNC-OUT

SYNC-IN

TIME-CONST

CLAMP

APL

COLOR

AGC.FIL

AGC OUT

PICTURE

Vref

R-OUT

DCDET

G-OUT

B-OUT

VIDEO

F ADJ

ACC.F

APC.F

27 24

Killer.F

VCO

SYNC SEP

H filter

Trap D.L

ACC

ACC DET

APC Killer

VCO

TINT

BPF

Demodulation

VEE VCC1 GND VCC2 VEE

BGP GEN

CLAMP

Color control

L P F

Matrix Contrast

Picture quality ADJ.

AGC DET

AGC AMP

INT/EXT SW

γ corrector

R Gain

B Gain

INVINV INV

γ corrector

SWP GEN

Clamp Bright

COM DRIV

RGB. AMP

γ 2

γ 1

RGB. INV

39 FRP

COM. AMP

25 7 6 29 33 31 2 5 4 3 1 48 47 43 30

TINT

YEE

VCC1

GND

VCC2

VEE

— 10 —

CONT

EXT-R

EXT-B

EXT-G

B-SUB-CONT

R-SUB-CONT

BRIGHT

COM.OUT

+ 25 hidden pages