Aiwa CDC-MA01 Service Manual page 32

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Pin No. Pin Name
40 TP (R)
41 TUN (R)
42 CD (R)
43 AUX (R)
44 RSELO
IC, LC75817W-8720
Pin No. Pin Name
1 ~ 56 S1 ~ S56
57 ~ 59 S57 ~ S59
60 S60 / COM10
61 COM9
62 ~ 69 COM8 ~ COM1
70 , 71 KS1, KS2
72 ~ 75 KS3 ~ KS6
76 ~ 80 TE KI1 ~ KI5
L 13942296513
81 P-1
82 P-2
83, 84 P-3, P-4
85 VDD
86 VLCD
87 VLCD0
88 VLCD1
89 VLCD2
90 VLCD3
91 VLCD4
92 VSS
93 TEST
94 OSC-OUT
95 OSC-IN
96 INT
97 DO
98 CE
99 CL
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100 DI
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I/O
I Signal input pins.
O Input selector output pin.
I/O
O LCD segment output.
O LCD segment output. (Not used)
O LCD segment output / LCD common driver output. (Not used)
O LCD common driver output. (Not used)
O LCD common driver output.
O Key scan output. (Not used)
O Key scan output.
I Key scan input.
O Illumination driver output.
O Not used.
– Power supply.
– LCD power supply.
– LCD power supply.
I
3/4 bias voltage is applied to the LCD drive externally.
I 1/2 bias voltage is applied to the LCD drive externally.
I
1/4 bias voltage is applied to the LCD drive externally.
– Connected to GND.
– GND.
– Test pin. (Connected to GND)
O
Resistor and capacitor are attached externally to form an oscillator circuit.
I
– Connected to VDD.
O Serial data interface pin; output data.
O Serial data interface pin; chip enable.
O Serial data interface pin; synchronization.
I Serial data interface pin; data transferred.
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