Sony WM-FX671 Service Manual page 20

Pin No. Pin Name I/O
51 MOTOR DIR O
52 TAPE I
53 REC CTL —
54 AVLS CTL O
55 BST CTL O
56 RV CTL O
57 MB/GRV CTL O
58 AMP CTL O
59 DOLBY CTL O
60 PM CTL O
61 DDC2 CTL O
62 RADIO CTL O
63 TEST I
64 IF IN I
65 LOCAL/DX O
66 DO O
67 WAKE UP I
68 MONO/ST O
69 GND —
70 FM IN I
71 AM IN I
72 VDD —
73 RESET I
74 XOUT O
75 XIN I
76 VXT —
77 VLCD —
78 C1 —
79 C2 —
80 VEE —
MOTOR control terminal.
TAPE detect terminal. (L: ON, H: OFF)
Not used
Terminal for controlling AVLS (when ON=H).
Tone control terminal (L: normal, Hi-imp: MEGA BASS).
Revive control terminal.
Tone control terminal (L: GRV, H: MB).
AMP control output (H: AMP ON).
Terminal for controlling DOLBY circuit (L: OFF, Hi-imp: ON).
PL control terminal.
DDC control terminal (L: OFF, Hi-imp: ON).
RADIO system control terminal (L: RADIO ON).
TEST terminal (Normal operation at L or NC).
IF input.
TUNER sensitivity select terminal (H: LOCAL, L: DX).
Phase comparator output.
External interrupt terminal (Interrupt by key input).
FM MONO/STEREO select terminal (H: MONO, L: ST).
Power supply Ground terminal.
FM local oscillator input.
AM local oscillator input.
Power supply voltage.
RESET terminal (H during operation).
Terminal to which external oscillator is connected.
Terminal to which external capacitor is connected to stabilize crystal oscillator power supply.
Terminal to step-up power supply voltage for LCD drive. (3V)
Terminal to step-up power supply voltage for LCD drive.
Terminal for 1.5V constant voltage power supply of LCD drive.
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Description