Table Of Contents - Sanyo AAI-A Series Training Manual

Table of Contents
lJ
Part 1 Chassis Description
1. Circuit Function
Description ....................................................................................................3-5
2. CPU ..........................................................................................................................................6.l9
2-1 A-D Key Identification .........................................................................................................................8
2-2 Option Switches ............................................................................................................................9.lO
2-3 System Switch Output .................................................................................................................l 1-12
2-4 Chroma lD ........................................................................................................................................l3
2-5 ldent ..................................................................................................................................................l3
2-6 Sync. lD ............................................................................................................................................l4
2-7 IPC
BUS . ., . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .... ....
14
2-8 Band Switching .................................................................................................................................l5
2-9 Tuning & Digital AFT ...................................................................................................................l6.l7
2-1o Power & Protect ..............................................................................................................................l8
2-11 Horiz./Vert. Pulse ............................................................................................................................l9
3. System Switches ................................................................................................................... 20-24
3-1 Sound Carrier Trap ...........................................................................................................................22
3-2 SIF Filtering ......................................................................................................................................23
3-3 Chroma Crystal Selection .................................................................................................................24
4.
External/Internal Source Selection ...........................................................................................25
5. lF/Video/Chroma/Def.
................................................................................................................ 26
6. Audio Circuit ......................................................................................................................... 27-29
6-1 Monaural Circuit ...............................................................................................................................27
6-2 A2 Stereo Circuit ..............................................................................................................................28
6-3 A2 Stereo & Nicam Circuit ................................................................................................................29
7.
Double/Full-wave Rectifier Circuit ............................................................................................
30
Part 2 Block Diagram of ICS
1. TDA8361 /8362 .dF/Video/Chroma/Def
Iect ion> ........................................................................ 32
2. TDA4661/V2
<1 H Delay> ............................................................................................................ 33
3. TDA8395 cSECAM
Decoder> ..m..mm .............................................................................................34
4. LA7833 <Vertical Output> ..m ......................................................................................................34
5. TDA2546A/V4 <SIF Decoder> ...................................................................................................35
6, MC44131 PB <Audio Multiple Decoder> ...................................................................................35
7, TDA8204 cNICAM Decoder> .....................................................................................................36
8. TDA8205 <NICAM QSPK Demodulator>
..................................................................................37
9, TDA7263M
<Audio Output> ...................................................................................................... 38
10. STR81 145A <Double/Full-wave
Rectifier Switch> ................................................................38
Part 3 Trouble Shooting Chart
1. Dead .......................................................................................................................................4l-44
2. No picture/No sound .................................................................................................................45
3. No picture-sound OK .................................................................................................................46
4. No sound-picture OK (Stereo model) .................................................................................47.48
5. No sound-picture OK (Monaural model) ..................................................................................49
6. No colour .................................................................................................................................... 50
7.
Incorrect colour phase .............................................................................................................. 51
8. No vertical deflection
................................................................................................................ 52
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AA1-A