Aiwa CDC-Z137 Service Manual page 18

CDC-Z137
Pin No. Pin Name
55 LCD-DI
56 REMOTE IN
57 LED
58 FM
59 AM
60 NC
61 ACC DET
62 CD INSIDE
63 TEST
64 L IND
65 PH. MUTE
66 RESET
67 ACC IN
68 SNS
69 BATT IN
70 IF (FM/AM)
71 EO3
72 SUB PD
73 VDD
74 AM OSC
75 FM OSC
76 VSS
77 EO2
78 EO1
79 TEST1
80 XOUT
18
I/O
I LCD driver date signal input
I Remote controller input, pulled up when not used, only CDC-X437 US model.
O Not used. (Open)
O FM/AM power switch output "H"=AM, "L"=FM
O FM/AM power switch output "L"=AM, "H"=FM
— Not used. (Open)
I ACC (accessory power) ON/OFF LEVEL input OFF=fault mode.
I Pick up inner track position detection (LMT SW)
I CD test mode Pulled down when not used.
I Voltage input for level indicater Pulled down when not used.
I External mute control, "L"=–20 dB mute, pulled up when not used. (EUR)
I System reset signal input "L"=system reset
I ACC (accessory power) ON/OFF input OFF=fault mode.
I Backup detection signal input
I Input battery ON/OFF
I IF count signal input (FM/AM)
— Not used. (Open)
— Not used. (Open)
— Power supply pin
I AM channel transmission input
I FM channel transmission input
— Connected to GND
— Not used. (Open)
O Error out from change pump (for FM/AM)
— Not used. (Open)
O System clock oscillator output (4.5 MHz)
Pin Description