Sharp R-4S1FH Service Manual - Page 23
Connected to LCD signal COM3.
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Pin No. 73/74 75 76 77 Signal VCC/VREF AVSS COM3 COM2 I/O IN IN OUT OUT 78 COM1 OUT 79 COM0 OUT 80 VL3 IN Connected to GND. Description Connected to VC. Terminal not used. Common data signal. Connected to LCD signal COM3. Common data signal. Connected to LCD signal COM2. Common data signal. Connected to LCD signal COM1. Power source voltage input terminal. Standard voltage for LCD. R-4S1FH 21
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21
R-4S1FH
Pin No.
Signal
I/O
Description
73/74
VCC/VREF
IN
Connected to GND.
75
AVSS
IN
Connected to VC.
76
COM3
OUT
Terminal not used.
77
COM2
OUT
Common data signal.
Connected to LCD signal COM3.
78
COM1
OUT
Common data signal.
Connected to LCD signal COM2.
79
COM0
OUT
Common data signal.
Connected to LCD signal COM1.
80
VL3
IN
Power source voltage input terminal.
Standard voltage for LCD.