Casio vm1000 Schematic
VM-1000
INDEX
(KX-661BXA)
APR. 1999
(without price)
R
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.................................................................................................................... 9
5. PARTS LIST........................................................................................................................... 11
6. SCHEMATIC DIAGRAMS...................................................................................................... 15
1. SPECIFICATIONS
Monitor (VM-102)
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
Connection Cable: 16-pin RGB (Approximate Length: 2.5 m)
Operating Temperature: 0°C to 40°C
Storage Temperature: -20°C to 60°C
Dimensions: 6-1/8" (W) x 1" (D) x 4-5/8" (H)
15.5 (W) x 2.5 (D) x 11.8 (H) cm (excluding projections)
Approximate Weight: 18.0oz (510g) (including cables)
Video Terminal Unit (VU-100)
Monitor Terminal: 16-pin
Power Cord: Cigarette lighter plug (Approximate Length: 1.8m)
VIDEO IN: PIN plug
AUDIO IN: PIN plugs x 2 (L/R)
Power Supply: 12V DC (car battery, negative ground only)
Approximate Power Consumption: 8.8W (with 12V DC input)
Operating Temperature: 0°C to 40°C
Storage Temperature: -20°C to 60°C
Dimensions: 7-1/16" (W) x 4-13/16" (D) x 1-1/16" (H)
18.0 (W) x 12.3 (D) x 2.7 (H) cm (excluding projections)
Approximate Weight: 18.0oz (510g) (including cables)
Accessories: Two sets of cloth fasteners, audio/video cable (1.5m)
Center Console Box Stand (OS-25FT)
Dimensions: 3-5/8" (W) x 3-1/16" (D) x 2-13/16" (H)
9.2 (W) x 7.8 (D) x 7.1 (H) cm
Approximate Weight: 5.3oz (150g)
Accessories: Two sets of large cloth fasteners, one set of small cloth fasteners,
three cable clamps
Headrest Stand (OS-22R)
Stand Length: 15-3/4"
40.0cm (when extended)
Approximate Weight: 18.0oz (510g)
— 1 —
2. ADJUSTMENTS
2-1. Adjustments to be done
Adjustments Necessary equipment Adjusting block
1. VCC2 voltage adjustment Power supply, Digital multimeter (FD730C) Video unit
2. Contrast adjustment Power supply, Pattern generator, Signal generator, Oscilloscope Video unit
3. Tint, Color adjustments Power supply, Pattern generator, Signal generator, Oscilloscope Video unit
4. VCC4-1 adjustment Power supply, Oscilloscope M-PCB
5. VCC9 adjustment Power supply, Oscilloscope M-PCB
6. VCO Free Run adjustment Power supply, Video PG, Frequency counter M-PCB
7. V-COM coarse adjustment Power supply, Oscilloscope M-PCB
8. V-COM fine adjustment Power supply, Video PG, V-COM jig, Oscilloscope M-PCB
9. Brightness adjustment Power supply, Video PG, Oscilloscope M-PCB
10. Monostable multivibrator adjustment Power supply, Pattern generator, Oscilloscope M-PCB
2-2. Adjustments
1. VCC2 adjustment
Power supply
Set Digital multimeter
Input Output
CP120
CP102
1) Adjust the output voltage of power supply so that CP120 voltage becomes 11.5 ± 0.05V.
2) Adjust VR102 so that CP102 voltage becomes 5.0 ± 0.02V.
2. Contrast adjustment
GND
SGVideo Signal Oscilloscope
Set
CP313
Video
Input
Output
CP310
1)Ground CP313
2)Apply 75% color bar signal to video input of the set.
3)Observe CP310 signal with an oscilloscope. Adjust VR310 so that
0.6 ± 0.1Vp-p
the amplitude between pedestal and white level is 0.6 ± 0.1Vp-p.
— 2 —
3. Tint/Color adjustment
Video signal Oscilloscope
Set
CP313
Video
Input
1)Ground CP313 via 33k ohm resistor.
2)Unsolder (open circuit) IF pad HP200.
3)Apply 75% color bar signal to video input of the set.
4)Observe CP337 signal. Adjust VR300 (TINT) and VR301 (COLOR)
so that the difference between the four pulses is within 0.2V.
4. VCC4-1 adjustment
Output
CP337
GND
33kw
Pulses 2 and 3 are adjusted by TINT
While pulses 1 and 4 are controlled byCOLOR.
1234
Power supply
Input
DC12V
1) Adjust power supply output so that CP172 voltage becomes 11.5 ± 0.05V.
2) Connect a digital multimeter to CP166 and adjust VR161 so that the meter reading is 4.50 ± 0.02V.
5. VCC9 adjustment
Power supply
Input
DC12V
Set + monitor
Output
CP166
Set + monitor
Output
CP163
Digital multimeter
Digital multimeter
1)Adjust power supply voltage so that CP172 voltage becomes 11.5 ± 0.05V.
2)Connect a digital multimeter to CP163 and adjust VR161 so that the meter reading is 8.3 ± 0.3V.
— 3 —
6. VCO Free run adjustment
4.0 ± 0.1V
DClevel=0.1 ± 0.5V
Minimize the amplitude.
Power supply
Set + monitor
CP756
CP757(VCC4-2)
Frequency counter
Input
DC12V
Output
CP181
1)Adjust power supply voltage so that CP172 voltage becomes 11.5 ± 0.05V.
2) Connect CP756 and CP757 (VCC4-2).
3) Connect a frequency counter to CP181 and adjust VR751 so that the counter reading is 15.73 ± 0.1kHZ.
7. V-COM coarse adjustment
Power supply
Input
DC12V
Set + monitor
Digital multimeter
Output
CP802
1) Adjust power supply voltage so that CP172 voltage becomes 11.5±0.05V.
2) Connect an oscilloscope to CP802. Observing the oscilloscope, adjust
VR850 so that pulse amplitude is 4.0±0.1V.
3) Adjust VR801so that pulse's "H" level is 0.1 ± 0.5V.
8. V-COM fine adjustment
Photo diode
Pattern generator
Photo sensor amplifier
Input
Video
Set + monitor
1) Adjust power supply so that CP172 voltage become 11.5 ± 0.05V.
2) Apply black raster signal to the set through Video Input terminal and
turn the brightness control dial all the way to the maximum position.
3) Set the adjustment jig on the monitor as shown on the figure above.
4) observe the sensor amplifier output with an oscilloscope. Adjust VR801 so
that 60Hz component becomes minimum.
— 4 —
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