CASIO QV300C Service Manual
QV-300 (C) (KX-727C)
(For PAL)
JAN. 1997
(without price)
R
CONTENTS
SPECIFICATIONS ......................................................................................... 1
BLOCK DIAGRAM......................................................................................... 2
FLOW DIAGRAMS ........................................................................................ 3
POWER SUPPLY CIRCUIT OPERATION..................................................... 5
TROUBLESHOOTING ................................................................................... 8
DISASSEMBLY.............................................................................................. 9
ASSEMBLY.................................................................................................. 11
PRINTED CIRCUIT BOARDS...................................................................... 13
EXPLODED VIEW........................................................................................ 15
PARTS LIST................................................................................................. 16
SCHEMATIC DIAGRAMS............................................................................ 23
WAVEFORMS.............................................................................................. 27
SPECIFICATIONS
Item Specification
1. Recording System Digital (JPEG based)
2. Signal System PAL
3. Recording Medium Built-in 32-Mbit flash memory
4. Number of Memory Pages FINE(VGA) : 64 (approximately 480-kbit compressed)
NORMAL(Quarter-VGA) : 192 (approximately 160-kbit compressed)
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 2 focal points with macro position: F2.6 f=4.9 mm/f=11.0 mm
8. Aperture F2.6/F8 manual switching
9. Focal Length f=4.9 mm F2.6/NORMAL : 0.6 m (2') ~ ∞;
f=4.9 mm F2.6/MACRO : 9 cm (3.5") ~ 11 cm (4.3")
f=4.9 mm F8/NORMAL : 0.3 m (1') ~ ∞;
f=4.9 mm F8/MACRO : 7 cm (2.8") ~ 14 cm (5.5")
f=11.0 mm F2.6/NORMAL : 3.4 m (11.2') ~ ∞;
f=11.0 mm F2.6/MACRO : 52 cm (1.7') ~ 62 cm (2')
f=11.0 mm F8/NORMAL : 1.7 m (5.6') ~ ∞;
f=11.0 mm F8/MACRO : 44 cm (1.4') ~ 77 cm (2.5')
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. Resolution FINE, NORMAL
19. Monitor 61,380-pixel 2.5-inch TFT low-glare color LCD: doubles as finder
20. PC Output Image 480 × 640 dots (FINE)
240 × 320 dots (NORMAL)
21. Terminals DIGITAL; VIDEO OUT; DC IN 6 V
22. Power Supply Batteries (AA-size Alkaline or Lithium batteries × 4)/AC Adaptor
23. 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 220 minutes continuous operation (Play mode)
Recording for about 180 images (one image per minute)
24. Dimensions 72 (H) × 162 (W) × 49 (D) mm/
2.8" (H) × 6.4" (W) × 1.9" (D)
25. Weight Approximately 250 g / 8.8 oz (excluding batteries)
26. Accessories Wrist strap; soft case; video cable; cleaning cloth
— 1 —
BLOCK DIAGRAM
Camera Unit Digital PCB
CCD
Lens
IC703
LC99092-Z03
8 bit to 16 bit
converter
Color processor
IC602
KM29V32000T
32 Mbit
Flash memory
IC601
HM51W4260
4 Mbit DRAM
A/D
converter
IC701
µPD482445LGW
4 Mbit VRAM
VRAM
controller
Data
compressor
expander
ROM
RAM
CPU
I/O
port
Direct
memory
access
controller
Bus
state
controller
Serial
communication
interface
IC702
µPD6461GS
On screen
display
Video
encoder
D/A
converter
IC700
HG51D291FE
Power
supply
Video out
Linear PCB
IC300
IR3Y21
Chroma circuit
IC400
MSM6770CGS
Display controller
Power
supply
Back
light
AC Adaptor
Battery
LCD
IC600
HD6437042Y03F
Key PCB
Digital I/O
— 2 —
REC mode
1
CCD
Camera Unit
A/D
Converter
FLOW DIAGRAMS
2
IC703
LC99092-Z03
IC602
KM29V32000T
4
6
IC700
HG51D291FE
IC701
µPD482445LGW
7
8
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 IC 700 and IC701: Y, By, Ry → Video
8 Video out
5
When pressing the shutter button
1
CCD
A/D
Converter
2
IC703
LC99092-Z03
4
IC600
HD6437042Y03F
Digital PCB
6
IC700
HG51D291FE
Camera Unit
IC602
KM29V32000T
8
IC601
HM51W4260
7
— 3 —
IC701
µPD482445LGW
3
IC600
HD6437042Y03F
5
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-Z03
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 IC 700 and IC701: Y, By, Ry → Video
6 Video out
3
2
6
IC700
HG51D291FE
4
5
IC701
µPD482445LGW
IC600
HD6437042Y03F
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
3
C254
VCC1
IC507
1
2
4
OUT
5
VCC
NC
NC
Q503
R513
IC505
3
GND
2
INA
1
INB
Q514
2
5
1
C521
4
3
C523
6 Voltage detection signal
VCC3-1
876
5
Q
PR
CLR
VCC
CKDQ
123
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 —
IC
Operation
Time Chart
Power on
1. PON
IC505
IC506
IC507
NAND gate
Flip-flop
Voltage detector
1
4
H (VCC1)
L
1
2
CK
Q
Pin 2 (VDD)
> 3.2 V
< 3.2 V
5
PR
CLR
Power off
1. PON
7
6
Pin 1 (OUT)
H
L
H (VCC1)
L
2. APO
3. POB
4. FACT
5. Power On
6. Voltage
detection
L
H (VCC3)
L
L
H (VCC1)
L
H (VCC0)
2. APO
3. POB
4. FACT
5. Power On
6. Voltage
detection
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 —
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