Casio QV-4000 Troubleshooting guide

R
QV-4000
(KX-821D)
SEP. 2001
(without price)

CONTENTS
SPECIFICATIONS ....................................................................................................................................... 1
BLOCK DIAGRAM ...................................................................................................................................... 3
ADJUSTMENT ............................................................................................................................................ 4
1. Program version upgrading.............................................................................................................. 5
1-1. How to confirm the program (graphic menu) version............................................................. 5
1-2. Upgrading procedure using the CompactFlash card.............................................................. 6
1-3. Upgrading procedure using the PC link cable......................................................................... 7
2. Test mode........................................................................................................................................... 9
2-1. Booting ........................................................................................................................................ 9
2-2. Item for testing............................................................................................................................ 9
3. Product conditions .......................................................................................................................... 11
3-1. Color adjustment data writing ................................................................................................. 18
3-2. Flash adjustment ...................................................................................................................... 18
3-3. Flash operation and recharge operation ................................................................................ 19
3-4. Current consumption ............................................................................................................... 20
3-5. VCOM DC adjustment............................................................................................................... 21
3-6. Assist light adjustment. ........................................................................................................... 22
3-7. Operation check........................................................................................................................ 23
4. MAIN PCB Assy ............................................................................................................................... 24
4-1. RGB AMP and Sub-Brightness voltage setting adjustment ................................................. 24
4-2. Contrast and Brightness voltage setting adjustment ........................................................... 25
4-3. TINT setting adjustment........................................................................................................... 26
4-4. EVCC3, VCC1.8, VCC3, VCC5, BLVCC Voltage check .......................................................... 27
4-5. VCC2, VCC7, VCC15, VEE7 Voltage check............................................................................. 27
DISASSEMBLE ......................................................................................................................................... 28
EXPLODED VIEW ..................................................................................................................................... 34
PARTS LIST .............................................................................................................................................. 35
PRINTED CIRCUIT BOARDS ................................................................................................................... 40
SCHEMATIC DIAGRAMS ......................................................................................................................... 44

— 1 —
SPECIFICATIONS
File Format Still images (including panoramas): JPEG (Exif. Ver. 2.1)/TIFF, DCF standard (Design rule for
Camera File system), DPOF compatible
Movies: AVI (Motion JPEG)
Recording Medium CompactFlash card (Type I/II), IBM Microdrive
Recorded Image Size 2240 x 1680 pixels, 2256 x 1504 (3 : 2) pixels, 1600 x 1200 pixels, 1280 x 960 pixels,
640 x 480 pixels
Standard Memory Capacity, Number of Image Files, Computer Output Image Size (JPEG images only)
• The above figures are approximations only.
Image Deletion Single image; all images in a folder; all images in memory (with image protection)
Imaging Element 1/1.8-inch CCD (Total Pixels: 4.13 million, Effective Pixels; 3.98 million)
Lens F2 (W) to 2.5 (T); f = 7 (W) to 21 mm (T)
(equivalent to approximately 34 (W) to 102 mm (T) for 35 mm film)
Zoom 3X optical zoom; 3.2X digital zoom (9.6X in combination with optical zoom)
Focusing Contrast-type Multi-areaAuto Focus (SpotAuto Focus Mode, Macro Mode, Infinity Mode); manual
focus; focus lock
Approximate Focus Range Normal: 30 cm to ∞
Macro: 6 cm (W)/20 cm (T) to 50 cm
Manual Focus: 6 cm (W)/20 cm (T) to ∞
Exposure Control Light Metering: Multi-pattern, center-weighted, spot by CCD
Exposure: Full Auto, Program AE, Shutter priority AE, Aperture priority AE, Manual
Exposure
Compensation: –2EV to +2EV (1/3EV units)
Image size
(pixels)
2240
X
1680
2256
X
1504
(3:2)
1600
X
1200
1280
X
960
640
X
480
Quality
FINE
NORMAL
ECONOMY
TIFF
FINE
NORMAL
ECONOMY
TIFF
FINE
NORMAL
ECONOMY
TIFF
FINE
NORMAL
ECONOMY
TIFF
FINE
NORMAL
ECONOMY
TIFF
File size
1.8 MB
1.2 MB
0.72 MB
11.025 MB
1.6 MB
1.1 MB
0.66 MB
9.99 MB
0.85 MB
0.6 MB
0.35 MB
5.625 MB
0.5 MB
0.35 MB
0.2 MB
3.6 MB
0.15 MB
0.09 MB
0.06 MB
0.9 MB
8MB
memory card
7 images
10 images
15 images
1 image
8 images
12 images
19 images
1 image
15 images
19 images
30 images
2 images
22 images
30 images
51 images
3 images
77 images
101 images
154 images
15 images
64MB
memory card
30 images
43 images
60 images
5 images
33 images
50 images
77 images
5 images
60 images
77 images
124 images
10 images
88 images
124 images
207 images
15 images
311 images
415 images
622 images
62 images
340MB
memory card
513 images
730 images
1026 images
87 images
566 images
842 images
1314 images
97 images
1026 images
1314 images
2053 images
171 images
1493 images
2053 images
3285 images
269 images
4693 images
6571 images
8213 images
1026 images
Still Number of images
Movie (320 x 240 pixels)
Storage Capacity Approximately 300 KB/second
Recording Time 30 seconds per movie

— 2 —
Shutter CCD electronic shutter; mechanical shutter, BULB, 60 to 1/1000 second
Aperture F2.0/2.3/2.8/4.0/5.6/8.0, auto switching or manual switching
White Balance Automatic, fixed (4 modes), manual switching
Self-timer 10 seconds, 2 seconds
Built-in Flash Flash Modes: AUTO, ON, OFF, Red eye reduction
Flash Range: Approximately 0.5 to 3.5 meters
Recording Functions One-shot, continuous, movie, panorama, AEB, self-timer, macro, Best Shot
Monitor 1.8" TFT, low-glare color HAST LCD (122,100 pixels, 555 x 220)
Viewfinder LCD Monitor or optical viewfinder
Clock Built-in quartz digital timepiece for time and date recording and storage with image data; auto
calendar up to 2049
Input/Output Terminals Remote shutter release terminal; AC adaptor terminal; USB port (MINI-B); VIDEO OUT (NTSC/
PAL)
Power Supply Four AA-size alkaline or lithium batteries
Four AA-size nickel-metal hydride rechargeable batteries (NP-H3)
AC adaptor (AD-C620)
AC adaptor charger (BC-3HA)
Battery Life The values noted below indicate the number of hours before battery failure under normal operating
temperature (25 °C). These values are for reference only, and do not guarantee that any particular
set of batteries actually will provide the service life indicated. Low temperatures shorten battery
life.
• The above figures are approximations only.
• The above guidelines are based on the following battery types:
Alkaline: MX1500 (AA) DURACELL ULTRA
Lithium: Energizer
• Battery life varies with brand.
Continuous recording values show the number of shots without using the flash. The number of
shots depends on use of the flash and whether flash is turned on or off.
Power Consumption Approximately 6.8 W
Dimensions 118(W) x 74.5(H) x 64.5(D) mm
Weight Approximately 355 g (excluding batteries)
Type of Operation
AA-size Alkaline
Batteries LR6
AA-size Lithium
Batteries FR6
AA-size Ni-MH Batteries
NP-H3
Continuous Recording
90 minutes
(540 shots)
180 minutes
(1,130 shots)
100 minutes
(600 shots)
Continuous Playback
170 minutes
320 minutes
180 minutes
• This camera does not have a separate battery to power its clock. Clock settings are cleared whenever power to the camera is cut
off (by batteries going dead while the camera is not connected to anAC power outlet with theAC adaptor) for about 24 hours.After
power is resumed, either by loading fresh batteries or connecting to an AC power outlet, you will have to set the correct time and
date again.
• The liquid crystal panel built into this camera is the product of precision engineering, with a pixel yield of 99.99%. This also means,
however that 0.01% of the pixels can be expected to fail to light or to remain lit at all times.

— 3 —
BLOCK DIAGRAM
TFL-LCD
COD18T1035FN
IR3Y29AM
HD404889
Power Supply
Block
+1.8V
+3.3V
+5.0V
+5.4V
+15V
+7.5V
-7.5V AF/ZOOM
DRIVER
LB1937T DRIVER
LB1837M
Flahing Controller
External
Storobe
HG75C
HD6417709A
SDRAM
128MX16bit
FLASH-ROM
16M
MBM29LV160
CF-BUFFER
TC7MH367FK
X 2
Incline
Sensor
RTC
RTC-4574
MAIN(DB)
MAIN(DA)
MAIN(SUB)
C
JK
KEY
VCOM-
AMP
NJM3414
TELE
AELOCK
AE
LOCK
WB
Photometric
Method
FOCUS
WIDE
PREV
DISP
CCD
ICX406AQ
ØV-DRIVER
CXD3400N
ØH-DRIVER
TC7MH368FK
X 2
CDS/AGC
AD9843A
Serial JACK
A/V-JACK
USB-JACK
DC-JACK
SUB-LCD
FLASH
TIMER
CAS-1.8
BLB
BLA
CN
LED
40pin BtoB
20pin BtoB
40pin
BtoB
4pin CtoF
Photo Sensor
CASE
20pin
BtoB
VCC300
SGND
SGND
VCC1-ST
DCIN
JKGND
DB+
VCC5
VLED
DB+
DB-
EXST
18pin
BtoB
6pin
26pin CF
SW
SHUTTER
POWER
+
AF
LED
LV-040A
16pin 6pin
Mode
Dial
Driver
Lever
BL Circuit
Battery BOX
4bit Microcomputer
Shutter/AE
Cross
Controller
Chroma
Interface
Lens Unit
SW JOG
Dial
Charging
Booster
Circuit Strobe Unit
75C
SH3
CF
Connector
-
+

— 4 —
ADJUSTMENT
■ Preparation
1. PC (IBM Compatible)/OS:Windows 95/98
2. Link cable.
3. Adjustment program
1) ADJ821A.EXE (Color adjustment data transfer program)
2) FLOAD.EXE (Camera unit version up program)
3) romxxxxxxxx.bin (Camera unit program data)
4) gmenuxxxxxxxx.bin (Camera unit menu display data)
5) qv-4000.bin (Upgrade data for CF cards)
4. AC adaptor or stabilizer
5. Digital oscilloscope
6. Multimeter
7. Ammeter
8. Frequency counter
9. TV (with video terminal)
10. Video cable
11. Battery (battery operation/battery cover lock)
12. PC link program : Photo Loader (Communication function confirmation)
13. USB cable/USB driver (USB function confirmation)
14. Test chart (for photography check)
That which carried out color printing of picture data "CHART1.JPG" and the "CHART2.JPG".
CHART2.JPGCHART1.JPG

— 5 —
1. Program version upgrading
In the camera unit, program and graphic menu are stored.
Please check the version and update it if the version is not updated.
There are two method of program updating; using CompactFlash card or utilizing PC link cable.
Note:
Be sure to use AC adaptor.
1-1. How to confirm the program (graphic menu) version
1. Boot the test mode.
Turn the power on while pressing DISP and MENU buttons simultaneously.
2. Check the LCD display.
(Example) English/ Japanese/ Spanish
TEST MODE
PROG 01. 09. 21. 13. 01 씯Program version
GMENU 01. 07. 23. 10. 24 씯Graphic menu version
· · · ·
(Example) English/ German/ French
TEST MODE
PROG 01. 09. 21. 13. 01 씯Program version
GMENU 01. 07. 23. 10. 32 씯Graphic menu version
· · · ·
(Example) English/ Spanish/ Italian
TEST MODE
PROG 01. 09. 21. 13. 01 씯Program version
GMENU 01. 07. 23. 10. 34 씯Graphic menu version
· · · ·

— 6 —
(5) After a while, display shows “COMPLETE!” and the camera is set in PLAY mode.
(6) Turn the camera off then turn the power key to “PLAY” while pressing the control button.
Check the version number on the display.
This time “VER1.01” will be shown.
(7) If the version number is correct, the firmware upgrading is completed.
Turn the camera off.
(8) Take a test picture.
Take one picture and play it back and check the result.
If the picture is normal, delete it and complete the test.
PROGRAM UPDATE
YES
NO
VER1.01
1-2. Upgrading procedure using the CompactFlash card
(1) Prepare a CF card that contain QV-4000 firmware upgrading software (qv-4000.bin) in the root directory.
(2) Insert the CF card in the QV-4000 and connect AC adaptor.
(3) While pressing the control button, turn the power key on to "PLAY".
The following display comes out.
Version display (VER1.00 etc.) may come out on the bottom of the display.
(4) Moving the contol button up or down, move the white cursor at "YES" then push "SHUTTER" key.
The following display comes out and rewriting firmware starts.
PROGRAM UPDATE
YES
NO
NOW LOADING

— 7 —
1-3. Upgrading procedure using the PC link cable
The restoration method at the time of firmware upgrade failure
(1) Set CD-ROM for Service Disc into CD-ROM drive of a personal computer and boot FLASH LOADER
“Fload.exe” then select a file to be transferred.
The transmission files are “romXXXX XXXX.bin” and “gmenuXXXX XXXX.bin”.
Perform file selection and rewriting one by one.
If a transmission file is chosen, “loaded ***** bytes” is shown on the “Status” column of the display.
(2) Extract CF card from the camera unit.
(3) Connect the QV serial cable between the camera and the PC.
(4) Click “Progress” button on FLASH LOADER “Fload.exe” of the PC.
At this time, keep the camera’s power off.
(5) Insert an AC adaptor and turn the power on.
Since the software is damaged in most cases therefore power turns on as soon as AC adaptor is
connected. In such a case, operation checking LED turns on in green so it does not matter even the
power key is off.
In case power does not turn on (operation checking LED does not turn on in green) when AC adaptor
is connected, turn the power key to “PLAY”.
(6) The progress bar on FLASH LOADER “Fload.exe” starts to move.
The progress bar proceeds to “Transfer”, “Erase” then “Program”.
If a camera has not been turned on for a long time after clicking the “Progress” button, “read timeout” is
shown on “Status” column and writing is not be done.
In such a case, repeat the procedures from step 1.

— 8 —
(7) If writing is completed, “program complete” will be shown on “Status” column of the display.
(8) Disconnect AC adapter and shut off a power supply.
This method does not turn the power off by key operation.
Therefore, disconnect the AC adaptor to shut the camera off compulsorily.
(9) Continuously choose and rewrite the other transmission file.
Repeat the above steps 1 to 8 to rewrite.
(10) When both files are rewritten, disconnect QV serial cable from the camera and check the version
indication following the undermentioned procedure.
While pushing down “DISP” and “MENU” keys, turn the power key to “PLAY” and check the version
numbers of Program and GMENU.
(11) After checking the version numbers, take one test picture and make sure that shooting, playing back,
and deleting are done normally.

— 9 —
2. Test mode
Note: Do not perform the menu item unless explained here. (It may damage the internal data and
camera becomes unusable.)
2-1. Booting
To boot the test mode;
Turn the camera on while pressing MENU and DISP buttons.
To boot MENU1
Press DISP ➜DISP ➜MENU keys in order rapidly.
To boot MENU2
Press FLASH ➜FLASH ➜MENU keys in order rapidly.
To boot MENU3
Press SELF ➜SELF ➜MENU keys in order rapidly.
* To execute
Move up or down the control key to select a test item then press shutter button to execute it.
2-2. Item for testing
1TEST MODE TEST MODE EN PAL
PROG 01. 09. 21. 13. 01
GMENU 01. 07. 23. 10. 24
LOADER VERSION 1.10
POWER OX3F
G-MENU EJS 1.00
ADJUSTMENT
ZOOM OK KIZU OK
WB OK ZTRACK OK
IRIS OK STROBE OK
SHUTTER OK VCOM OK
2MENU1
MENU 1
1. INIT , NTSC JAPANESE
2. LED+SUBLCD ON
3. INIT , NTSC ENGLISH
4. CROSS HATCH
5. ANGLE DETECT CHECK
6. INIT , PAL ENGLISH
7. COLOR BAR
8. INIT , PAL GERMAN

— 10 —
3MENU2
4MENU3
MENU2
1. NOP
2. ZOOM ADJUST
3. WB ADJUST
4. IRIS ADJUST
5. SHUTTER ADJUST
6. KIZU
7. ZTRACK ADJUST
8. STROBE ADJUST
9. VCOM ADJUST
MENU3
1. HARDWARE COLORBAR
2. REC INFO
3. BATT , TEST
4. PROG+GMENU UPDATE
5. PROG UP DATE
6. GMENU UPDATE
7. CHECK SUM
8. OSD DATA CHECK
9. ERROR MESSAGE TEST
10. SDRAM CHECK
MENU3
11. KEY CHECK
12. LED CHECK
13. CF CHECK
14. SUBLCD ALL ON
15. CF SPEED TEST
16. AF INFO
17. SUBLCO CHECK
18. LASTMEM CLEAR
19. NOISE CAPTURE
20. BAYER CAPTURE
MENU3
21. SHUTTER CLOSE REC
22. CLEAR ADJUSTMENT
23. GRAY SCALE(10STEP)
24. WHITE
25. BLACK
26. 50PERCENT GRAY

— 11 —
3. Product conditions
3-1. Color adjustment data writing
1. Summary
(1) QV-4000 is a high quality digital camera and makeshift adjustments cannot cover the quality of the
camera's picture.
Therefore, we have prepared set of lens ass'y that is adjusted precisely in the factory and a floppy disc
containing the lens'es adjustment data as spare parts.
(2) These adjustment data are stored in the FlashROM on Main PCB.
2. Repairs
It is necessary to write color adjustment data for the replacements of the following units.
(1) Lens ass'y
(2) Main PCB (when FlashROM contents can be read)
(3) Main PCB and lens ass'y (when FlashROM contents cannot be read)
3. To replace the lens ass'y
(1) Connect AC adaptor and PC link cable to the camera.
Note: Connect the link cable to serial port COM1.
(2) Turn the camera on to set it on PLAY mode.
(3) Boot adjustment program ADJ821A.EXE.
At this time, each adjustment data are "-1".

— 12 —
(4) Read the adjustment data of before repairs.
Click the Receipt button. “receive OK” will be indicated and adjustment data are shown.
Reference: At this time you can save the adjustment data in your PC.
File (F) ➜Save as (A)
Select the drive and name the file then save it.
(Note: Do not forget to put extension code ".ADJ".)
(5) Write down the following numbers.
strobe-pwm
(6) Replace the lens ass'y.
(Adjusted in the factory and comes with adjustment data)
(7) Connect AC adaptor and PC link cable to the camera.
(8) Turn the camera on and set it on PLAY mode.
(9) Boot the adjustment program (ADJ821A.EXE).

— 13 —
(10) Insert the floppy disc containing adjustment data of the lens ass'y in your PC and read the data.
File (F) ➜Open (O)
Select FDD
Select adjustment data file with extension code .ADJ.
(11) Return the data of the Strobe-pwn you have written on step 5 (data before replacing the lens unit).
Set strobeFlag "0" and click the calc sum button.
Caution: Never change the other data.
(13) Turn the camera off.
(14) Booting the test mode, be sure that each adjustment item is YES.
Power on while pressing DISP and MENU keys simultaneously.
(15) Check the camera operation by shooting a picture and play it back.
ADJUSTMENT
ZOOM OK KIZU OK
WB OK ZTRACK OK
IRIS OK STROBE OK
SHUTTER OK VCOM OK
(12) Transfer the data to the camera.
Click Trans button on ADJ window.
“send OK” will be shown.

— 14 —
1-4. To replace Main PCB (in case the contents of FlashROM can be read)
(1) Connect AC adaptor and PC link cable to the camera.
Note: Connect the link cable to serial port COM1.
(2) Turn the camera on to set it on PLAY mode.
(3) Boot adjustment program ADJ821A.EXE.
At this time, each adjustment data are "-1".
(4) Read the adjustment data of before repairs.
Click the Receipt button. "receive OK" will be indicated and adjustment data are shown.
(5) Save the adjustment data in the PC.
File (F) ➜Save as (A)
Select a drive to save data.
Name a file name then save the data.
(It is better to name the camera's serial number as the file name.)
XXXXXXXX.ADJ (Note: do not forget the extension code .ADJ.)
(6) Replace the Main PCB
(7) Connect AC adaptor and PC link cable to the camera.

— 15 —
(8) Turn the camera on and set it on PLAY mode.
(9) Boot the adjustment program (ADJ821A.EXE).
(10) Load the saved data of the lens unit.
(11) Transfer the data to the camera.
Click Trans button on ADJ window.
“send OK” will be shown.
(12) Turn the camera off.
(13) Booting the test mode, be sure that each adjustment item is YES.
Power on while pressing DISP and MENU keys simultaneously.
(14) Check the camera operation by shooting a picture and play it back.
ADJUSTMENT
ZOOM OK KIZU OK
WB OK ZTRACK OK
IRIS OK STROBE OK
SHUTTER OK VCOM OK

— 16 —
1-5. In case of replacing Main PCB and lens ass'y (FlashROM on Main PCB contents cannot be read)
(1) Replace PCB D and lens ass'y.
(2) Connect AC adaptor and PC link cable to the camera.
Note: Connect the link cable to serial port COM1.
(3) Turn the camera on to set it on PLAY mode.
(4) Boot adjustment program ADJ821A.EXE.
At this point, adjustment data of each item is "-1".
(5) Insert the floppy disc containing adjustment data of the lens ass'y in your PC and read the data.
File (F) ➜Open (O)
Select FDD
Select adjustment data file with extension code .ADJ.and load it.

— 17 —
(7) Turn the camera off.
(8) Booting the test mode, be sure that each adjustment item is YES.
Power on while pressing DISP and MENU keys simultaneously.
(9) Perform the function check (Record/Playback).
(6) Transfer the adjustment data to the camera.
Clock Trans button on ADJ program window.
Send OK. Will be shown.
ADJUSTMENT
ZOOM OK KIZU OK
WB OK ZTRACK OK
IRIS OK STROBE OK
SHUTTER OK VCOM OK

— 18 —
3-2. Flash adjustment
1. General
When you exchange a flash unit, please perform this adjustment.
2. Necessary equipment
(1) Dark room
(2) AC adaptor
(3) Gray paper (Superior's oxford gray No. 22)
The following sizes are available from us (also available from camra shop).
Parts code Parts name Specifications
1904 5411 Superior photographing background paper No. 22 (1.75 x 2.7m)
1904 5412 Sperior photographing background paper No. 22 (2.72 x 11m)
3. Condition
(1) Perform in a dark room.
(2) Distance between flash lens and gray paper should be 70 ±5 cm.
(3) Use lighter color of the gray paper.
Paper should be larger enough to fit in a picture taken from 70 cm distance.
(Reference; more than 1.5m x 2.0m)
4. Adjustment
(1) Connect an AC adaptor to the camera.
(2) Set the camera in REC mode.
(3) Boot MENU 2 in the test mode by the following operations;
Turn the power on while pushing DISP and MENU keys.
Push FLASH, FLASH, and MENU keys rapidly in order.
(4) Move control button up and down, select STROBE ADJUST and push the shutter release button.
(5) Adjustment is completed after emitting flash 4 times.
1st flashing; Checking amount of light in normal shooting
(Emitting 4 times maximum changing PWM value.)
2nd flashing; Confirming amount of light of the 1st flashing.
3rd flashing; Checking brightness after changing PWM value.
4th flashing; Checking the circuit for changing aperture (F2.0 -> F5.6).
5. Block diagram
70 cm
Back ground paper.
QV-4000