NAD L75 - ELECTRICAL CONTENTS SECTION; IC BLOCK DIAGRAMS AND PIN DESCRIPTIONS; SCHEMATIC AND PCB DIAGRAMS

2-11
SECTION 2
ELECTRICAL CONTENTS
CONTENTS
IC BLOCK DIAGRAMS & PIN DESCRIPTION ........................................................................................ 2-11
1. IC81 (TMP87PS71F u-COM) .............................................................................................................. 2-12
2. IC34 (YSS912C AC3/DTS Decoder) .................................................................................................. 2-14
3. IC84 (NJU3713G EXPANDOR) ........................................................................................................... 2-16
4. IC32 (AK4112VF DIR) ......................................................................................................................... 2-17
5. IC33 (AK4527VQ CODEC) .................................................................................................................. 2-17
6. IC21, 22, 23 (NJU3713G EXPANDOR) ............................................................................................... 2-18
7. IC12~15, 37~42, 82 (OPA2134UA, NJM2068MD, OPAMP) ............................................................... 2-18
8. IC35 (IS61C256A15J 256K SRAM) ..................................................................................................... 2-18
9. IC36 (TC9164AF FUNCTION) ............................................................................................................ 2-19
10. IC36 (TC9163AF FUNCTION) ........................................................................................................... 2-19
11. IC16 (TC9482F ELECTRONIC VOLUME) ........................................................................................ 2-20
12. IC31 (TC74HCUO4AFN INVERTER)................................................................................................ 2-20
13. IC85 (MC74HC14D INVERTER) ........................................................................................................ 2-21
14. IC25 (ANAM2024V OSD).................................................................................................................... 2-21
15. IC83 (SAA6579TV1 ROS FILTER)..................................................................................................... 2-22
16. TRANSISTOR, REGULATOR IC BLOCK DIAGRAM........................................................................ 2-22
DIAGRAMS ................................................................................................................................................ 2-23
1. BLOCK DIAGRAM ................................................................................................................................ 2-23
2. WIRING DIAGRAM .............................................................................................................................. 2-27
3. SCHEMATIC DIAGRAM ...................................................................................................................... 2-29
MAIN............................................................................................................................................2-29
FRONT ........................................................................................................................................2-31
INPUT..........................................................................................................................................2-33
AMP/ SPEAKER .........................................................................................................................2-35
SURROUND ...............................................................................................................................2-37
4. PRINTED CIRCUIT BOARDS ............................................................................................................. 2-41
MAIN ...........................................................................................................................................2-41
FRONT/ INPUT ...........................................................................................................................2-43
AMP/ SPEAKER .........................................................................................................................2-45
SURROUND ...............................................................................................................................2-47