Aiwa NSX-SZ50 Service Manual page 25

IC DESCRIPTION
IC, LC866548V-5P03 (Except 52EZ), IC, LC866560W-5P19 (52EZ Only)
Pin Name
Pin No.
1 I-STEREO/I-DRF
2 I-IFC/I-SUBQ
3 O-2PB
4 O-POWER
5 O-CD-ON
6 O-PLL-DATA
7 O-RMT
8 O-BIAS
9 O-MUTE
10 O-STB
11 O-CLK-SFT
12 RESET
13 NC
14 I-DISH
15 VSS1
16 CF1
17 CF2
18 VDD1
19 I-HOLD
20 I-KEY1
21 I-KEY2
22 I-KEY3
23 I-TU-SIG
24 I-CDSW
25 I-SPEANA
26 I-RE-VOL
27 I-WRQ/I-RDS-CLK
28 I-TM-BASE
29 I-RMC
30 ~ 40 G11 ~ G1
41 NC
42 ~ 45 P35 ~ P32
46 VDD3
47 ~ 48 P31 ~ P30
49 P29/O-SPEANA-C
50 P28/O-SPEANA-B
51 -VFL
52 P27/O-SPEANA-A
53 P26
54 P25/I-NO-CASINO
55 P24/I-KARAOKE
56 P23/NO-DEMO
57 P22/PRO LOGIC
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I/O
I Stereo detected input / CD DRF input.
I Tune IF count serial data input / CD SUBQ input.
O DECK2 playback switch output.
O System power supply ON/OFF output.
O CD power ON/OFF output.
O LED driver, TUNER IC, FUNCTION IC data output.
O DECK2 record mute output.
O DECK2 bias ON/OFF output.
O System mute ON/OFF output.
O Latch strobe output for LED driver IC.
O Micon clock shift output.
I System reset.
- Not connected.
I Latch strobe output for FRONT shift register.
- GND.
- 5.76MHz oscillator circuit.
- 5.76MHz oscillator circuit.
- Power supply input.
I Power failure detected input.
I KEY input (A/D).
I KEY input (A/D).
I KEY input (A/D).
I Tuner signal input (52EZ Only).
I CD mecanical switch A/D converter input.
I A/D input for spectrum analyzer display.
I Rotary encoder input (VOL).
I CD WRQ input / Tune RDS clock input (52EZ Only).
I Reference clock input for timer watch.
I System remote control signal input.
O FL grid output G11 ~ G1
- Not connected.
O FL segment output P35 ~ P32.
- Power supply input.
O FL segment output P31 ~ P30.
O FL segment output P29 / Spectrum analyzer band switching output.
O FL segment output P28 / Spectrum analyzer band switching output.
- Power supply input for FL display.
O FL segment output P27 / Spectrum analyzer band switching output.
O FL segment output P26.
O/I FL segment output P25 / NO CASINO DEMO input to diode.
O/I FL segment output P24 / KARAOKE input to diode (Not used).
O/I FL segment output P23 / NO DEMO input to diode (Not used).
O/I FL segment output P22 / PRO LOGIC input to diode.(Not used)
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Description