Casio VM-5000 Troubleshooting guide

R
VM-5000
JAN. 2000
(without price)
(KX-663)
VM-5000
INDEX

CONTENTS
1. SPECIFICATIONS ................................................................................................................... 1
2. ADJUSTMENT ......................................................................................................................... 2
2-1. Adjustments to be done................................................................................................... 2
2-2. Adjustments...................................................................................................................... 2
3. PRINTED CIRCUIT BOARDS.................................................................................................. 6
4. EXPLODED VIEW.................................................................................................................... 7
5. PARTS LIST............................................................................................................................. 8
6. SCHEMATIC DIAGRAMS...................................................................................................... 10

— 1 —
1. SPECIFICATIONS
Monitor (VM-104U)
Display Element: High-resolution color LCD
Pixels: 224,640 (234 x 960)
Driver: TFT active matrix
Light Source: Internal backlight; high luminosity fluorescent lamp
Speaker: One (3.6cm) round speaker
Operating Temperature: 0°C to 40°C
Storage Temperature: –20°C to 60°C
Dimensions: VM-104U: 6 1/8"(W) x 1 3/16"(D) x 4 5/8"(H)
15.5(W) x 3.04(D) x 11.8(H) cm
(excluding projections)
Approximate Weight: VM-104U: 12.1oz (344g)
Connector Box (AV-1VM)
Dimensions: 2 9/16"(W) x 1 3/8"(D) x 1 1/16"(H)
6.5 (W) x 3.5(D) x 2.7(H) cm
(excluding projections)
Approximate Weight: 6.0oz (170g)
Cable Length: Approximately 10 ' (3m)
Center Console Box Stand Base (KY-01CA)
Dimensions: 3 15/16"(W) x 2 7/8"(D) x 3 13/16"(H)
10.0 (W) x 7.3(D) x 9.7(H) cm
Approximate Weight: 6.3oz (180g)
Accessories: Five screws
Headrest Stand (OS-29R)
Stand Length: 16 1/8"
41.0cm (when extended)
Approximate Weight: 14.6oz (415g)

— 2 —
Adjustments Necessary equipment
1. VDD adjustment, Power supply, Digital voltmeter
VGH, VSH, VGL, Vcc9 voltage check
2. Bright,Sub-bright adjustment Power supply, Signal generator, Oscilloscope
3. TINT color adjustment Power supply, Signal generator, Oscilloscope
4. VCON DC coarse adjustment Power supply, Signal generator, Oscilloscope
5. LCM screen positioning Power supply, Signal generator
2. ADJUSTMENTS
2-1. Adjustments to be done
2-2. Adjustments
1.VDD adjustment,VGH,VSH,VGL,Vcc9 voltage check
•Conditions
Apply 11.50 ±0.05 [V] on Vcc1-1.
•Adjustment
Adjust VR161 so that VDD (CP165) voltage becomes 5.00 ±0.02 [V].
•Checking
VGH (CP168) = 12.0 ~ 14.0 [V]
VSH (CP166) = 7.0 ~ 8.0 [V]
VGL (CP164) = –15.0 ~ 17.0 [V]
Vcc9 (CP163) = 8.05 ~ 8.65 [V]
VDigital
Voltmeter
M-PCB
Stabilizer VCC1-1
VDD
VGH
VSH
VGL
VCC9

— 3 —
•Conditions
(1) Apply 11.50 ±0.05 [V] on Vcc1-1.
(2) Signals: provide color bar pattern (white 75 %) composite video signal from CP196.
Signal level; 1 Vp-p ±0.01V (75 ohm termination), conforming to NTSC-M system.
(3) Apply VDD (+5V) voltage on KILLER terminal (CP301) via 22 kΩresistance.
•Adjustment
(1) Turn VR305 all the way counterclockwise.
(2) Adjust VR307 so that CP302 voltage becomes 1.83 ±0.05 [V].
(3) Triggering with CP702 (FRPT), observe CP708 (VG) and adjust VR301 so that White – pedestal level is
2.0 ±0.05 [V].
(4) Adjust VR305 so that neighboring lines’ white – pedestal is 0.8 ±0.05 [V].
(5) Observing CP707 (VR), adjust VR309 so that neighboring lines’ white-pedestal level is 0.8 ±0.05 [V].
(6) Observing CP706 (VB), adjust VR308 so that neighboring lines’ white – pedestal level is 0.8 ±0.05 [V].
•Caution
(1) Make sure that waveforms are not distorted.
(2) After the adjustment, remove the resistor connected between CP301 (KILLER) and VDD.
2. Bright, Sub-bright adjustment
2.30 ±0.05 V
0.80 ±0.05 V
VCC1-1
IF signal
Signal
generator
Stabilizer
Oscilloscope
M-PCB
CP707
CP706
CP708
CP301
VDD (+5 V)
22 KΩ

— 4 —
3.TINT color adjustment
•Conditions
(1) Apply 11.50 ±0.05 [V] on Vcc1-1.
(2) Signals: provide color bar pattern (white 75 %) composite video signal from CP196.
Signal level; 1Vp-p ±0.01V (75 ohm termination), conforming to NTSC-M system.
(3) Connect 47kohm resistor between CP304 and CP300 (GND).
•Adjustment
(1) Triggering CP702 (FRP), observe CP706 (VB) waveform.
(2) Adjust VR302 so that 1, 4pulses are level.
(3) Adjust VR303 so that 2, 3 pulses are level.
(4) Adjust VR302 so that 1, 4pulses are level.
(5) Adjust VR303 so that 2, 3pulses are level.
•Caution
(1) Be sure that amplitude difference between (1) and (4) pulses is less than 0.1 [V].
(2) Be sure that amplitude difference between (2) and (3) pulses is less than 0.1 [V].
VCC1-1
IF signal
Signal
generator
Stabilizer
Oscilloscope
M-PCB
CP706

— 5 —
4.VCOM DC coarse adjustment
•Conditions
(1) Apply 11.50 ±0.05 [V] on Vcc1-1.
(2) Signals: provide color bar pattern (white 75 %) composite video signal from CP196.
Signal level; 1Vp-p ±0.01V (75 ohm termination), conforming to NTSC-M system.
(3) Connect 47kohm resistor between CP304 and CP300 (GND).
•Adjustment
(1) Adjust VR310 so that the amplitude of VCOM output (CP710) is 10.0 ±0.5 [V].
(2) Adjust VR703 so that High level ofVCOM output (CP710) is 6.5 ±0.5 [V].
GND
6.5 V
10.0 V
VCC1-1
IF signal
Signal
generator
Stabilizer
M-PCB
B output
CP710 Oscilloscope
5. LCM screen positioning
•Conditions
(1) Apply 11.50 ±0.05 [V] on Vcc1-1.
(2 Signals: Apply monoscope pattern composite video signal from CP196.
Signal level; 1Vp-p +/-0.01V (75 ohm terminated), conform to NTSC-M system.
•Adjustment
(1) Connect LCM to display monoscope pattern.
(2) Adjust LCD’s H.POS to display the picture in the center.
Adjust so that the right and left patterns are the same.
•Caution
(1) Non-equality of right and left pattern should be less than 1 mm.
(2) Adjustment should be done with the display unit which is assembly of LCM and PCB.
VCC1-1
IF signal
Signal
generator
Stabilizer
M-PCB LCM
Signal
Backligjt
Right and left pattern balance
should be equal.
The difference between the
right and left pattern should be
less than 1mm.

— 6 —
3. PRINTED CIRCUIT BOARDS
659A-M-A PCB (TOPVIEW)
663A-M-D PCB (BOTTOMVIEW)

— 7 —
4. EXPLODED VIEW
6
3
9
1
8
4
S4
S5
7S5 S4
S5 X2
2
S2
13
S2
X2
S6
5
S6
S1 X3
12
10
11
S6 X2
S3 X4
S4 S4

5. PARTS PRICE LIST
Main PCB(VM-104U)
N
Item
Code No.
Parts Name
Specification
Q
Price Code
R
-
01
1000 2563
TFT-LCD module
LQ5BW215
1
EJ
A
N
02
1001 9357
PCB ass'y , Monitor
K140682*1 TK(K663B
1
DK
A
N
03
1000 8560
Upper case AAM-K663
K140632-2
1
AZ
X
-
04
6614 2950
Frame AAM-K659
K241232-1
1
AK
X
-
05
1000 2507
Switch knob AAM-K662
K341720-1
1
AB
X
-
06
6611 2010
Sensor cover AM-K660
K340585-2
1
AL
X
-
07
1000 2505
Code spacer AAM-K662
K341716-1
1
AB
X
-
08
6614 5520
Flat cable AAM-K658
K441911-1
1
AC
X
N
09
1000 8557
Rating plate BXA-K663
K440985-8
1
AA
X
N
10
1000 8561
Lower case AAM-K663
K140269-8
1
AU
X
-
11
6610 0360
Attachment AM-K635
K340292-1
1
AI
X
-
12
3831 1083
Speaker
T036S23C4310
1
AY
B
N
13
6614 5560
Frame AAM-K658
K341677-1
1
AB
X
-
S1
6630 7430
Screw A-K618
K440305-1
3
AA
X
-
S2
6611 2110
Screw A-K650
K440850-1
3
AA
X
N
S3
1000 4665
Precision screw (+)
BT3F 2X4 Black
4
AA
X
N
S4
1000 4672
Precision screw (+)
BT3P 1.7X5 Black
4
AA
X
N
S5
1000 4673
Precision screw (+)
BT3P 2.6X5 NI
4
AA
X
-
S6
1000 2496
Precision screw (+)
BT3P 2X6 Black
4
AA
X
Accessory
N
Item
Code No.
Parts Name
Specification
Q
Price Code
R
-
-
1000 2192
Connection cable
AV-1VM
1
CM
C
-
-
1000 2146
Rear stand
OS-29R-(D)
1
CP
X
-
-
1000 5805
Base plate ass'y
KY-01CA
1
AZ
X
Notes:
Q - Quantity per unit
R - Rank
N - New Parts
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