Aiwa NSX-AJ100, Service Manual

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1 O-PB1 O Cassette deck output switching PB1/PB2.
2 O-RMT O REC MUTE output.
3 O-BIAS O Bias ON/OFF output.
4 O-TU ON O Tuner power supply ON/OFF output.
5 O-CD ON O CD power supply ON/OFF output (Not used).
6 O-MOTOR O Cassette deck motor control output.
7 O-POWER O Power control ON/OFF output.
8 ~ 16 NC — Not connected.
17 IC (VPP) — Internal connection. (Connected to GND)
18 VSS — Connected to GND.
19 VDD — Digital power supply pin.
20 O-STB (DSP) — Not used.
21 O-PLL-CE O Tuner PLL IC chip enable output.
22 O-PLL-CLK O PLL IC clock output.
23
O-DSC/
O Function IC control output/PLL data output. (Pull down)
O-PLL-DATA
24 O-CD-CLK O CD IC control clock output.
25 O-CD-CE O CD data chip enable output.
26 O-CD-DATA O CD IC control data output.
27 I-WRQ I CD WRQ input.
28 I-DRF I CD DRF input.
29 I-SUBQ I SUB-Q data input.
30 RESET I Reset input for MICON.
31 O-DSP DATA — Not used.
32 I-STEREO I Tuner stereo detect input.
33 I-TUNE/IFC I Tuner SD detection input/Tuner IF count input.
34 I-RMC I System remote control signal input. (Active "L")
35 I-TM-BASE I Reference clock input for timer switch.
36 O-C.SHIFT O Clock shift output for micro computer when tuner receiving broadcast.
37 VDD — Digital power supply pin.
38 X2 —
Crystal connection for main system clock oscillation.
39 X1 I
40 VSS — Connected to GND.
41 AVDD — A/D converter analog power supply pin.
42 I-HOLD I Hold input.
43 I-KEY 1 I Key AD input 1.
44 I-KEY 2 I Key AD input 2.
45 I-TP-SW I Deck mechanism SW AD input.
46 I-CD-SW I CD mecha switch input.
47 I-DISH I CD turnable photo sensor input.
48 ~ 49 NC — Connected to GND through resistor.
Description Pin No. Pin Name I/O
IC DESCRIPTION
IC, UPD780226GF-023-3BA
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