Sony Walkman WM-PSY02, Руководство по обслуживанию

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SECTION 5
DIAGRAMS
5-1. EXPLANATION OF IC TERMINALS
MAIN BOARD IC401
µ
PD17015GS-545-GJG-E1 (SYSTEM CONTROLLER, LCD DRIVER)
Pin No. Pin name I/O Description
1 KEYIN3 I Key return signal input terminal
2 KEYOUT1 O
3 KEYOUT2 O Key strobe signal output terminal
4 KEYOUT3 O
5 MUTE O Muting on/off control signal output to the LA4582CM (IC301) “L”: muting on
6 BEEP/INIT O Buzzer sound drive signal output terminal
7 SD I Station detector detect signal input from the TA2111F (IC1) SD is present at input of “L
8 TAPEON I Tape system power on/off monitor input terminal “H”: tape on
9 RADIOON O Radio system power supply on/off control signal output “H”: radio on
10 BAND O Band select signal output to the TA2111F (IC1) “H”: FM, “L”: AM (MW)
11 CE I Power failure detection signal input terminal (fixed at “H”)
12 XOUT O System clock output terminal (75 kHz)
13 XIN I System clock input terminal (75 kHz)
14 VDD — Power supply terminal (+3V)
15 GND — Ground terminal
16 EO O PLL error signal output terminal
17 VREG — Power supply terminal (connected to the coupling capacitor)
18 VCOFM I FM VCO input terminal
19 VCOAM I AM (MW) VCO input terminal
20 LCD8 O
21 LCD7 O
22 LCD6 O
23 LCD5 O
24 LCD4 O Segment drive signal output to the liquid crystal display (LCD401)
25 LCD3 O
26 LCD2 O
27 LCD1 O
28 LCD0 O
29 COM3 O
30 COM2 O
Common drive signal output to the liquid crystal display (LCD401)
31 COM1 O
32 COM0 O
33 VLCD1 —
34 CAP1 — Terminal for doubler circuit capacitor connection to develop liquid crystal display drive
35 CAP0 — voltage
36 VLCD0 —
37 KEYIN1 I Key return signal input terminal
38 KEYIN2 I Key return signal input terminal
5-2. BLOCK DIAGRAM
• Signal path.
F : FM
f : AM
E : TAPE
WM-PSY02