NAD L76 - SECTION 2 ELECTRICAL CONTENTS; IC BLOCK DIAGRAMS & PIN DESCRIPTION; DIAGRAMS; PRINTED CIRCUIT BOARDS

2-11
SECTION 2
ELECTRICAL CONTENTS
CONTENTS
IC BLOCK DIAGRAMS & PIN DESCRIPTION ........................................................................................ 2-11
1. IC81 (TMP87PS71AF u-COM)............................................................................................................ 2-12
2. IC35 (CS493264-CL DSP) ................................................................................................................. 2-14
3. IC34 (AK4586VQ DIR+CODEC)......................................................................................................... 2-16
4. IC21~23 (NJM2296M VIDEO SW) .................................................................................................... 2-18
5. IC12~15, 37~42, 82 (OPA213UA, NJM2068MD OP AMP) .............................................................. 2-18
6. IC84 (NJU3713G EXPANDOR) ......................................................................................................... 2-18
7. IC34 (TC9164AF FUNCTION) ............................................................................................................ 2-19
8. IC11 (TC9163AF FUNCTION) ........................................................................................................... 2-19
9. IC16 (TC9482F ELECTRONIC VOLUME) ....................................................................................... 2-20
10. IC31 (74HCU04AFN HEX INVERTOR)............................................................................................ 2-20
11. TRANSISTOR, REGULATOR IC BLOCK DIAGRAM........................................................................ 2-21
DIAGRAMS ................................................................................................................................................ 2-22
1. BLOCK DIAGRAM ................................................................................................................................ 2-22
2. WIRING DIAGRAM .............................................................................................................................. 2-26
3. SCHEMATIC DIAGRAM ...................................................................................................................... 2-28
MAIN............................................................................................................................................2-28
U-COM/ GUIDE...........................................................................................................................2-30
INPUT..........................................................................................................................................2-32
AMP/ SPEAKER .........................................................................................................................2-34
SURROUND ...............................................................................................................................2-36
4. PRINTED CIRCUIT BOARDS ............................................................................................................. 2-40
MAIN ...........................................................................................................................................2-40
FRONT/ INPUT ...........................................................................................................................2-42
AMP/ SPEAKER .........................................................................................................................2-44
SURROUND ...............................................................................................................................2-46