LG U8138 Service Manual page 44

Pin No. Pin Name
30 D4
31 D2
32 D0
33 LED_SEL
34 VOUT
35 –
36 SPK-
37 SPK+
38 MOTOR+
39 F_SHOT
40 GND
Table. Interface between LCD module and main board(in LCD Module)
I/O
I/O Bi-Direction Data Bus
I/O Bi-Direction Data Bus
I/O Bi-Direction Data Bus
I LED Select of B/L. (low : Main LED, high : Sub LED)
I Power Supply. (for Camera Flash LED, Indicator LED)
– NC
I Speaker_ReceiverPair Signal (-)
I Speaker_ReceiverPair Signal (+)
I Vibrator Pair Signal (+)
I Camera Flash LED. (Turn on at high level)
– Ground
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3. TECHNICAL BRIEF
Description