Toshiba CN27E90 Technical Training Manual page 5

SECTION XV
DSP CIRCUIT .......................................................... 109
1. ORIGINS OF DOLBY SURROUND ............................................................................................. 110
2. THE DOLBY MP MATRIX ............................................................................................................ 110
3. THE DOLBY SURROUND DECODER ......................................................................................... 111
4. DSP CIRCUIT ................................................................................................................................... 111
5. DSP (Digital Surround Processor) IC ............................................................................................. 114
6. SURROUND CIRCUIT ................................................................................................................... 116
7. INPUT BALANCE CIRCUIT ......................................................................................................... 116
8. MATRIX CIRCUIT ......................................................................................................................... 117
9. FILTER CIRCUIT (ANTI-ALIAS FILTER)................................................................................. 117
10. DSP CIRCUIT (DELAY) ............................................................................................................... 118
11. 7 kHz LOW PASS FILTER ........................................................................................................... 119
12. DOLBY NR CIRCUIT ................................................................................................................... 120
13. DSP FRONT ADDITION CIRCUIT ............................................................................................ 121
14. BUS CONVERTER ........................................................................................................................ 122
15. NEUTRAL BIAS ............................................................................................................................ 122
16. AUDIO OUTPUT AMPLIFIER (For Rear SP) .......................................................................... 123
17. TROUBLESHOOTING CHART ................................................................................................. 124
SECTION XVI
FAILURE DIAGNOSIS PROCEDURES ............... 125
1. H STARTING CIRCUIT FAILURE DIAGNOSIS PROCEDURES........................................... 126
2. DEFLECTION CIRCUIT FAILURE DIAGNOSIS PROCEDURES ......................................... 127
3. LEFT-RIGHT PIN-CUSHION DISTORTION CORRECTION CIRCUIT .............................. 128
4. X-RAY PROTECTION CIRCUIT FAILURE DIAGNOSIS PROCEDURES ........................... 129
5. PROTECTION CIRCUIT DIAGNOSIS PROCEDURE ............................................................. 130
6. VIDEO CIRCUIT DIAGNOSIS PROCEDURES ......................................................................... 131
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