Chapter 4 ELECTRICAL SIGNALS
4-8 UNI-5 Service Manual
4.3 LCD BOARD (PK-263)
XJ1
No. Signal Name Direction Opposite Side
1,2,5,7,9,11,
14,16,29,30
GND
-
PK-270(XJ17)
3,4 DC+5V power supply for LCD -
6,8,10,12,13,
15,17,18,19
LCD control signal
→
20,21 AC power supply for LCD -
22 DC-10V power supply for LCD -
23 DC+15V power supply for LCD -
26 DC+15V power supply for LCD backlight -
27,28 Light control signal for LCD backlight →
24,25 DC+5V -
XJ2
No. Signal Name Direction Opposite Side
1 GND -
Unused
2 DIM →
3 DC+5V -
XJ3
No. Signal Name Direction Opposite Side
2,20 DC+5V -
LCD
1,21 GND -
25 DC+5V power supply for LCD -
26 LCD GND -
10,11 AC power supply for LCD -
3 DC-10V power supply for LCD -
4 DC+15V power supply for LCD -
Others LCD control signal ←→
XJ4
No. Signal Name Direction Opposite Side
1 DC+5V -
LCD backlight
2 GND -
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