Casio QV-100 Troubleshooting guide

R
QV-100 (B)(KX-725B)
AUG. 1996
(without price)
(For NTSC)

CONTENTS
SPECIFICATIONS ......................................................................................... 1
BLOCK DIAGRAM......................................................................................... 2
FLOW DIAGRAM........................................................................................... 3
POWER SUPPLY CIRCUIT OPERATION.....................................................5
TROUBLESHOOTING ................................................................................... 8
DISASSEMBLY.............................................................................................. 9
PRINTED CIRCUIT BOARDS...................................................................... 11
EXPLODED VIEW........................................................................................ 13
PARTS LIST................................................................................................. 14
SCHEMATIC DIAGRAMS............................................................................ 21
WAVEFORMS.............................................................................................. 25

— 1 —
SPECIFICATIONS
Item Specification
1. Recording System Digital (JPEG based)/Field recording
2. Video Signal System NTSC
3. Recording Medium Built-in 32-Mbit 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; F2.8/f = 4.2 mm
8. Aperture F2.8/F8 manual switching
9. Focal Length F2.8/NORMAL : 50 cm to ~
F2.8/MACRO
: 14 cm to 18 cm
F8/NORMAL : 30 cm to ~
F8/MACRO : 11 cm to 27 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 150 minutes continuous operation (Play mode)
Recording for about 96 images (one image per minute)
FR6 AA-size lithium batteries:
Approximately 240 minutes continuous operation (Play mode)
Recording for about 180 images (one image per minute)
22. Dimensions 66(H) ×139(W) ×40(D)mm /
2.6" (H) ×5.5" (W) ×1.6" (D)
23. Weight Approximately 180 g / 6.3 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
CCD
Camera Unit
IC700
HG51D291FE
Digital PCB
IC703
LC99092-Z03
8 bit to 16 bit
converter
Color processor
IC602
KM29V32000T
32Mbit
Flash memory
IC601
HM51W4260
4Mbit DRAM
IC701
µPD482445LGW
4Mbit VRAM
IC702
µPD6461GS
On screen
display
VRAM
contoroller Video
encoder
D/A
converter
ROM
RAM
Direct
memory
access
controller
Bus
state
controller
Serial
communication
interface
IC600
HD6437042Y02F
Data
compressor
expander
Video out
Key PCB
A/D
converter
Lens
Digital I/O
IC300
IR3P90Y1
Chroma circuit
IC400
MSM6770CGS
Display controller
Linear PCB
Power
supply
Power
supply
AC Adaptor
Battery
Back
light LCD
CPU
I/O
port

— 3 —
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 IC 700 and IC701: Y, By, Ry →Video
8Video out
When pressing the shutter button
Camera Unit
IC703
LC99092-Z03 IC700
HG51D291FE
IC701
µPD482445LGW
IC602
KM29V32000T
IC601
HM51W4260
IC600
HD6437042Y02F
Digital PCB
1
2
3
4
5
6
7
8
CCD A/D
Converter
IC703
LC99092-Z03 IC700
HG51D291FE
IC701
µPD482445LGW
IC602
KM29V32000T
IC601
HM51W4260
IC600
HD6437042Y02F
Digital PCB
2
3
4
5
6
7
8
Camera Unit
1
CCD A/D
Converter

— 4 —
1Reading from Flash memory and storage for work
2Expansion by IC700
3Storage for work
4, 5. Video encode by IC 700 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
IC703
LC99092-Z03 IC700
HG51D291FE
IC701
µPD482445LGW
IC602
KM29V32000T
IC601
HM51W4260
IC600
HD6437042Y02F
Digital PCB
1
2
3
4
5
6
Camera Unit
CCD A/D
Converter

— 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
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 —
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
1
4
7
6
CK
Q
PR
CLR
Operation
NAND gate
Flip-flop
Voltage detector
IC
IC505
IC506
IC507
1
2
5
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 —
TROUBLESHOOTING
No Display
1. Check the fuse (FU500) on the digital PCB.
2. Check the fuse (FU100) on the linear PCB.
3. Check the jack (JK500) on the digital PCB.
4. Check the power switch (SW900) on the key PCB.
5. Check the flat cable between the digital and linear PCBs.
6. Check the back light.
7. Check the LCD.
No Display at Record Mode
1. Check the camera unit.
Defect of the Camera Unit
The camera unit must be replaced with whole unit when it is defective, because the precise adjustment is
required when the individual parts of the camera unit are replaced, and it can be done only at our factory.
(Except for replacing the outer case of the camera unit)

— 9 —
DISASSEMBLY
To disassemble the main unit
1. Open the battery cover, then unhook and
remove the grip.
Screw
Screw
2. Remove the screw.
3. Rotate the camera unit then remove the two screws
on the side of the unit.
Screw
Hook
Grip

— 10 —
To disassemble the camera unit
Remove the screw and the camera case.
Screw
Hook
Hook
6. Remove the upper case at the top of the unit.
5. Remove the battery cover and the upper case
at the bottom of the unit.
4. Remove the two screws on the bottom of the unit.
Screw Screw

— 11 —
C306 C308 R303 R305
C304
R302 R304
C313
C305
C320
C315 R310C340
R336
R312 R309
C314
C339R311
C129
D104
C126
C302
C128
C417 R404 C346
R340
C330 C331 R325
R323 C328
C326
L301
R314
R100
SW100
R315
R120
R121
C112 D106
C323
C324
C410 R428
C335
C122
C124C127
1
1
1
1
L102
L103
L105
Q100
C143
R322
R324
R326
C332
R327
R114
C145
C110
R113
C142
IC150
Q101
R151
C152
C151
C111
C113
Q150
IC101
Q102
Q103
C140
R150
C329 C407 R414 R413 C413 C412
R115
R146
R406
R405
R407
C406
L400
R320
R321
C316 C338
R308
C319
R307
C411 R427
R429
R411
R430
R412
C405
R402
R401
21 22
1 2
CN400
IC400
C120
D101
D102 D103
T100
C150D105
1
VR100
R110
R111
T150
L100
C141
IC100
R142
VR101
C348C347
R333
R403
C401
C402
C409
C414
R400
R408
R409
C408
C404
C415
C416
Q401
R424
R319
L303
C322
C333
C318
C321
R317
R313
IC300
C336
R334
C311
C312 L300
C310C337
R335
C334
C307
C309
C303
C301
C300
R300
R301
VR300
R306
L104
FU100
VR400
R328
C325 C327
R420
R421 R318
VR302
R331
R316
R332
R330
VR303
VR301
R141
C317
R426
R410
1
1
1
PRINTED CIRCUIT BOARDS
LINEAR
Top View
Bottom View

— 12 —
L732
C719
R612
R610
C718 C813
R625
R626
R607
D600
IC605
C731 C537 C540
L512
CN601
L514
L502
C548
C542
C541C546C551
C730
L540
L509
L503
CN600
Q514
EM2
Q512 Q611 Q610
IC508
IC504IC505IC507
R516 C517
C531
C527
C611
C612
C607
R603
IC703
IC601 IC701
C533 C535
C534
C532
L513
L501
C601
C629
L641
C625
R517
R515
C521
R509 R605 R606
C523
C712
L631
C722
Q609
CN602CN603
L643 L704
R519
C543
C547 C500
R541
Q508
DIGITAL
Top View
Bottom View
C501
R504 R500
R601 R602
R506
C536
R540
C511
R600
D502 C507
R503
C519
R542
C504
C550
R544
D500
Q510
R501
Q500
Q505
R518
R505
R543
C506
L505
R508
R507
R520
R502
Q511
C530
D501
D504
Q507
L506
FU500
D506
IC502
IC500
R620 R621 R619

C512
R639
E
E
C715
Q506
C707
F700
C720
Q700 R709
R704
C545R513C600
C524R514
R703 R702
C525
Q503Q513
R512
R611
R510
C520
R630
C626L506
R608
C604
C605
C603
R640
R511 C606 C526
C528
C589
R526
R623
R629
C518
L511
C522
R701
C705
C704
R700
NR700 NR701
NR703
NR702
L734
R714
C714
R708
R711
R617 R616
C721
R624
D601
D627R527
R528
R622
IC603
R530
C609
Q612
R614
R707
R705 R706
R713
Q701
Q702
Q613
L600
D603 D604 L601
L602
R615
C602
IC604
R641 C608
H701
R628 R627
C623
D602
C732
L620
C622
C624
Q501
IC704
IC700 IC600
IC702
D505
L507
L510
Q504
Q509
IC501
L504
IC503
Q502
IC506
IC602
1

— 13 —
EXPLODED VIEW
2
1
34
56
7
8
9
10
11
12
13
14
15
16
17
18 19
20 21
23
24
25
27
28
29
30
32
32
32
32
32
32
31
31
31
31
33
34
34
35
26
22
14-1
18-1
18-3
18-4
18-2
30-1
30-1-2
30-1-1
32
14-1
32
32

PARTS LIST
LINEAR PCB ASS'Y
Item Code No. Parts Name Specification Q R
Diodes
D101 7101 1194 Chip diode MA111-(TX) 1 C
D102 2390 1379 Schottoky diode MA729-(TX) 1 C
D103 2390 1379 Schottoky diode MA729-(TX) 1 C
D104 7101 1194 Chip diode MA111-(TX) 1 C
D105 2390 1379 Schottoky diode MA729-(TX) 1 C
D106 2360 2359 Chip zener diode MA8180-L(TX) 1 C
Fuse
FU100 3122 2772 Chip fuse ICP-S0.7TN 1 B
ICs
IC100 2114 3654 IC MB3800PNF-G-BND-EF 1 C
IC101 2114 3654 IC MB3800PNF-G-BND-EF 1 C
IC150 2105 3990 IC TC7S02F-TE85L 1 C
IC300 2114 3633 Linear IC IR3P90Y-1 1 C
IC400 2015 0147 LSI MSM6770CGS-2K-6004 1 C
Transistors
Q100 2253 0308 Chip transistor 2SD1119-R(TX) 1 B
Q101 2253 0308 Chip transistor 2SD1119-R(TX) 1 B
Q102 7911 0126 Digital transistor DTC144EUAT106 1 B
Q103 7911 0126 Digital transistor DTC144EUAT106 1 B
Q150 2253 0700 Chip transistor 2SK1485-T1 1 B
Q401 2251 0189 Chip transistor 2SB1218A-R(TX) 1 B
Switch
SW100 3412 1106 Slide switch SSSS212-12 1 C
Converter and Transformer
T100 3065 0693 DC-DC converter TTV6DD360M02 1 B
T150 3012 1176 Inverter transformer ETJ-09K002AM 1 B
Variable resistor
VR304 2775 0644 Semi-fixed resistor H0614D-10KB 1 C
Notes: Q – Quantity used per unit
R – Rank — 14 —

DIGITAL PCB ASS'Y
Item Code No. Parts Name Specification Q R
Diodes
D500 2390 2268 Chip diode MA727-(TX) 1 C
D501 2390 1379 Schottoky diode MA729-(TX) 1 C
D502 2390 1379 Schottoky diode MA729-(TX) 1 C
D504 2390 2261 Chip diode MA720-(TX) 1 C
D505 2390 2261 Chip diode MA720-(TX) 1 C
D506 2390 1421 Chip schottoky diode MA738-(TX) 1 C
D600 7101 1194 Chip diode MA111-(TX) 1 C
D601 2390 1379 Schottoky diode MA729-(TX) 1 C
D602 2390 1470 Chip diode MA143A-(TX) 1 C
D603 2390 1379 Schottoky diode MA729-(TX) 1 C
D604 2360 2982 Chip zener diode MA8075-M(TX) 1 C
Fuse
FU500 3632 0700 Chip fuse F1206A1R25FW-TP 1 A
ICs
IC500 2114 5607 IC TK11830MTL 1 C
IC501 2105 5985 IC RH5RH353B-T1 1 C
IC502 2105 3969 IC RH5RH503B-T1 1 C
IC503 2105 3689 IC RN5RG50AA-TR 1 C
IC504 2105 3976 IC RN5RL25AA-TR 1 C
IC505 2105 1407 CMOS-IC TC7S00F-TE85L 1 C
IC506 2105 3269 L-MOS TC7W74F-TE12L 1 C
IC507 2105 3983 IC RN5VL32AA-TR 1 C
IC508 2105 5999 IC XC6383F501MR 1 C
IC600 2012 5341 LSI HD6437042Y02F 1 C
IC601 2012 4424 LSI HM51W4260CLTT-7 1 C
IC602 2012 4340 LSI KM29V32000T 1 C
ICs
IC603 2105 1414 CMOS-IC TC7S04F-TE85L 1 C
IC604 2105 6006 IC RN5VL30AA-TR 1 C
IC605 2105 5719 IC TC7W32FU(TE12L) 1 C
IC700 2012 4417 LSI HG51D291FE 1 C
IC701 2012 4354 LSI µPD482445LGW 1 C
IC702 2012 4711 LSI µPD6461GS-644-E1 1 C
IC703 2012 4431 LSI LC99092-Z03 1 C
IC704 2105 5992 IC MM1228XFR 1 C
Jacks
JK500 3501 8281 Jack HEC0811-010010 1 C
JK600 3501 6538 Jack HSJ1169-012010 1 C
JK700 3501 5439 Jack HSJ1456-01-210 1 C
Transistors
Q500 2259 2205 Digital transistor DTA114EUAT106 1 B
Q501 2253 0308 Chip transistor 2SD1119-R(TX) 1 B
Q502 2251 0847 Chip transistor 2SB1386-T100R 1 B
Q503 2251 0189 Chip transistor 2SB1218A-R(TX) 1 B
Q504 2390 2863 Chip FET 2SJ212-T1 1 B
Q505 7911 0126 Digital transistor DTC144EUAT106 1 B
Q506 2251 0189 Chip transistor 2SB1218A-R(TX) 1 B
Q507 7911 0126 Digital transistor DTC144EUAT106 1 B
Q508 2253 0308 Chip transistor 2SD1119-R(TX) 1 B
Q509 2251 0847 Chip transistor 2SB1386-T100R 1 B
Notes: Q – Quantity used per unit
R – Rank — 15 —

Item Code No. Parts Name Specification Q R
Q510 7911 0126 Digital transistor DTC144EUAT106 1 B
Q511 7911 0126 Digital transistor DTC144EUAT106 1 B
Q512 7911 0126 Digital transistor DTC144EUAT106 1 B
Q513 7911 0126 Digital transistor DTC144EUAT106 1 B
Q514 7911 0126 Digital transistor DTC144EUAT106 1 B
Q609 7911 0126 Digital transistor DTC144EUAT106 1 B
Q610 2259 2205 Digital transistor DTA114EUAT106 1 B
Q611 7911 0126 Digital transistor DTC144EUAT106 1 B
Q612 2254 0448 Chip FET 2SK1580-T1 1 B
Q613 2254 0448 Chip FET 2SK1580-T1 1 B
Q700 2253 0133 Chip transistor 2SD1819A-R(TX) 1 B
Q701 2251 0189 Chip transistor 2SB1218A-R(TX) 1 B
Q702 2253 0133 Chip transistor 2SD1819A-R(TX) 1 B
Notes: Q – Quantity used per unit
R – Rank — 16 —

KEY PCB ASS'Y
Item Code No. Parts Name Specification Q R
Switches
SW900 3412 2002 Slide switch SPVC2-1-T 1 B
SW901 3412 1995 Switch SKQRAA-T 1 C
SW902 3412 1995 Switch SKQRAA-T 1 C
SW903 3412 1995 Switch SKQRAA-T 1 C
SW904 3412 1995 Switch SKQRAA-T 1 C
SW905 3412 1995 Switch SKQRAA-T 1 C
SW906 3412 1995 Switch SKQRAA-T 1 C
SW907 3412 1995 Switch SKQRAA-T 1 C
SW908 3412 1995 Switch SKQRAA-T 1 C
Notes: Q – Quantity used per unit
R – Rank — 17 —

MAIN COMPONENT
Item Code No. Parts Name Specification Q R
1 6611 4510 Display frame K725AAA R340023-1 1 X
2 6611 4710 Adhesive tape E-K725AAA R340051-4 1 X
3 6611 4720 Adhesive tape F-K725AAA R340051-5 1 X
4 6611 4400 REC/PLAY knob K725AAA R340025-1 1 X
5 6611 4410 Spring K725AAA R440045-1 1 X
6 6611 4420 Power switch knob K725AAA R340033-1 1 X
7 6611 4430 Upper case K725AAA R140003-1 1 X
8 6611 4390 Tripod hole K725AAA R340024-1 1 C
9 6603 8924 C knob A-K310 K3741D-1 1 C
10 6611 4540 Rating plate K726BBA R440053-2 1 X
11 2725 1246 LCD COD18T1008RB 1 B
12 6611 4674 BL ass'y R340042*1 1 B
13 6611 4700 Insulation plate K725AAA R440056-1 1 X
14 6611 4675 Linear PCB ass'y R240031*1 1 B
14-1 6609 7340 Flat cable A-K720 K411997-1 1 A
15 6611 4440 Grip K725AAA R340035-1 1 X
16 6611 4666 Battery cover sub ass'y R340044*1 1 C
17 6611 5771 Battery cover label B-K725 K440205A-7 1 X
18 6611 4665 Battery holder ass'y R340043*1 1 X
18-1 6611 4320 Battery spring A-K725AAA R440046-1 1 X
18-2 6611 4310 Battery spring B-K725AAA R440049-1 1 X
18-3 6611 4300 Battery spring C-K725AAA R440047-1 1 X
18-4 6611 4290 Battery wire K725AAA R440044-1 1 X
19 6609 7440 Badge A-K720 K440063-1 1 X
20 6611 0460 Plate K724AAA C441170-1 1 X
21 6611 0470 Battery label K724AAA C441180-1 1 X
22 6611 4480 Lower case K725AAA R140004-1 1 X
23 6611 4450 Shutter button K725AAA R340026-1 1 X
24 6611 4460 (+/-) button K725AAA R340027-1 1 X
25 6611 4470 MENU button K725AAA R240019-1 1 X
26 6611 4530 Connector cover K725AAA R340032-1 1 X
27 6610 2540 Cover label B-K720 K440064-2 1 X
28 6611 5764 Digital PCB ass'y R240030*3 1 B
29 6611 4679 Key PCB ass'y R340049*1 1 C
30 6611 4664 Camera unit R240026*1 1 B
30-1 6611 4671 Camera case sub ass'y R240024*1 1 X
30-1-1 6611 4200 Focus switch knob K725AAA R340014-1 1 X
30-1-2 6611 4190 Aperture switch knob K725AAA R340013-1 1 X
6611 4940 VGA seal K726BAA R440058-1 1 X
31 5112 0906 Screw BT3 1.7X5 NI 5 C
32 5860 1477 Screw BT3 1.7X3.5 Bk 10 C
33 5861 3111 Screw PT3 1.7X5.5 Bk 2 C
34 5860 3465 Screw BT3 1.7X5.5 Bk 2 C
35 5860 0763 Screw BT3 1.7X4 Bk 1 C
Notes: Q – Quantity used per unit
R – Rank — 18 —