Sony ICF-SW07 Service Manual page 36

IC502 µPD753012AGK-781-BE9 (SUB SYSTEM CONTROL, LCD DRIVE)
Pin No. Pin name
1 – 18 S12 – S29
19, 20 –––––
21 COM0
22 COM1
23 COM2
24 COM3
25 BIAS
26 VLC0
27 VLC1
28 VLC2
29 – 37 –––––
38 REQ
39 SCK
40 –––––
41 SI
42 – 45 –––––
46 ACK
47 – 53 –––––
54 VDD
55 XT1
56 XT2
57 IC
58 X1
59 X2
60 – 67 –––––
68 – 80 S0 – S11
Circuit Boards Location
r
ROM board
MAIN board
KEY board
ICF-SW07
I/O
O LCD segment signal output.
– Not used (OPEN).
O LCD common signal output.
O LCD common signal output.
O LCD common signal output.
O LCD common signal output.
O Bias output for LCD.
– LCD drive power supply.
– LCD drive power supply.
– LCD drive power supply.
– Not used (Connect to GND).
I Request signal input.
I Sub clock input.
– Not used (fix to "L").
I Data signal input.
– Not used (Connect to GND).
O PLL clock signal control output.
– Not used (OPEN).
– Power supply terminal.
I Sub clock input (32.768kHz).
O Sub clock output (32.768kHz).
– Connect to VDD.
I System main clock input (4MHz).
O System main clock output (4MHz).
– Not used (OPEN).
O LCD segment signal output.
MICROCOMPUTER board
REEL board
CONTROL board
ANTENNA CONTROLLER
– 36 –
Description
ANTENNA board
SW LOOP ANTENNA