Aiwa TV-C1421, Руководство по обслуживанию

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IC DESCRIPTION
IC, TDA9381PS
Pin No. Pin Name I/O Description
1 POWER O On/stand-by control output.
2 SCL0 O I
2
C-bus serial clock output.
3 SDA0 I/O I
2
C-bus serial data input/output.
4 M/I/BG O Tuner system control output.
5 NC– Not connected.
6 KEY-IN I Front key scan input.
7 SEL1 – Select 1 (signal select).
8 SEL2 – Select 2 (signal select).
9 D-GND – GND (digital).
10 AMUTE O Audio mute output.
11 ON-TIMER O On timer output.
12 D-GND – GND (analog text and digital TV processor).
13 SECAMPLL – SECAM PLL capacitor.
14 8VDD – VCC (8V).
15 DECDEC – Digital decoupling.
16 PHI-2 – PHI-2 control loop.
17 PHI-1 – PHI-1 control loop.
18 A-GND – GND (analog TV processor).
19 BANDGAP – Bandgap decoupling.
20 AVL – AVL (Automatic Volume Levelling).
21 V-DR+ – Vertical drive –.
22 V-DR- – Vertical drive +.
23 PIF+ I IF input.
24 PIF- I IF input.
25 IREF – Reference current.
26 VSAW – Vertical sawtooth.
27 AGC-OUT O Tuner AGC output.
28 AU-DEEM O Audio deemphasis.
29 DECSDEM – Decoupling sound demodulator.
30 A-GND – GND (analog TV processor).
31 SNDPLL – Narrow band PLL filter.
32 REF0 – AVL, comb filter. (Not used)
33 HOUT – Horizontal drive.
34 SAND O/I Sandcastle output/flyback input.
35 AU-EXT I External audio input.
36 EHT I EHT/overvoltage protection input.
37 PLL IF – PLL loop filter.
38 IF VOUT O IF video output.
39 VDD8V – VCC (8V) main supply voltage.
40 CVBS INT I CVBS input (tuner input).
41 A-GND – GND (analog TV processor).
42 CVBS/Y I CVBS input (external input).