— 2 —
Adjustments
Necessary equipment
1. VDD adjustment,
Power supply, Digital voltmeter
VGH, VSH, VGL, Vcc9 voltage check
2. Bright adjustment
Power supply, Signal generator, Oscilloscope
3. Contrast adjustment
Power supply, Signal generator, Oscilloscope
4. TINT color 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) = 19.0 ~ 21.0 [V]
VSH (CP166) = 13.5 ~ 14.5 [V]
VGL (CP164) = –5.5 ~ –4.0 [V]
Vcc9 (CP163) =
7.8 ~ 8.4 [V]
V
Digital
Voltmeter
M-PCB
Stabilizer
VCC1-1
VDD
VGH
VSH
VGL
VCC9
10.0
±
0.1 V
VCC1-1
IF signal
Signal
generator
Stabilizer
Oscilloscope
M-PCB
CP706
CP301
VDD (+5 V)
22 K
Ω
2. Bright adjustment
