Nad T 531 C Service Manual

Page 29

MODE MODE
1W, EE PLAY IW. EE PLAV
17 1.30 1.34 41 721.60 722.00
13 1.00 1.10 42 722.90 721.60
19 0.00 0.00 43 722.30 721.30
20 5.00 5.00 44 717.30 716.80
IC504 24C02N 45 712.40 712.30
1 0.00 0.00 46 79.30 713.00
2 0.00 0.00 47 713.90 716.70
3 0.00 0.00 46 715.60 715.00
4 0.00 0.00 49 717.00 717.50
5 4.99 4.97 50 716.90 716.00
6 4.93 4.97 51 718.60 713.10
7 0.00 0.00 52 713.00 713.30
3 4.99 0.00 53 713.40 720.00
54 720.20 724.30
I0901 78032 55 718.60 723.70
1 5.00 5.01 56 716.90 723.60
2 0.00 0.00 57 713.50 723.50
3 2.77 2.52 56 713.50 724.40
4 2.66 2.36 59 5.00 5.02
5 0.70 0.00 60 725.00 727.00
6 5.00 5.00 61 720.40 720.00
7 4.93 4.96 62 716.90 716.90
3 4.93 4.92 63 713.00 713.40
9 4.94 4.95 64 717.30 18.30
10 4.97 2.39 65 717.60 713.70
11 4.97 4.97 66 717.70 713.00
12 4.97 3.00 67 717.70 713.20
13 4.97 4.96 66 717.50 713.70
14 4.97 3.30 69 717.50 713.70
15 4.66 4.90 70 717.70 713.30
16 0.00 0.00 71 717.30 719.40
17 4.60 4.31 72 717.30 719.50
13 0.00 4.31 73 717.20 721.30
19 4.73 4.76 74 717.20 721.30
20 0.00 0.00 75 717.20 721.90
21 4.96 4.93 76 717.10 721.30
22 4.97 4.93 77 717.50 721.30
23 0.00 0.00 76 717.30 721.30
24 4.99 5.00 79 717.30 721.30
25 5.00 5.00 80 716.80 721.30
26 1.13 1.14 IC902 7042P
27 4.11 4.12 1 5.09 5.00
23 4.96 4.96 2 0.00 0.00
29 4.96 4.97 3 5.07 5.00
30 4.97 4.96 --
31 4.96 4.97 1 4.55 4.54
32 4.97 4.97 2 2.24 2.24
33 4.96 4.96 3 3.62 3.62
34 4.96 4.97 4 0.00 0.00
35 4.96 4.97 5 3.62 3.62
36 4.97 4.97 6 2.95 2.63
37 4.97 4.96 7 2.24 2.24
33 4.96 4.96 3 2.74 2.73
39 4.77 4.97 9 3.66 3.17
40 4.60 4.30 10 0.00 0.00

Emlller Base Coleclor

EE PLAV EE PLAV EE PLAY

QZNH 0.00 0.00 4.98 4.98 0.00 0.00
024 4.67 4.69 4.97 4.01 0.96 2.20
QZAZ 4.97 4.93 4.96 4.93 0.00 0.50

-m °

A401 5.04 5.33 4.32 5.03 4.08 0.00
A402 5.04 5.03 5.03 4.99 0.00 0.00
A403 0.00 0.00 0.00 0.00 5.03 5.02
A404 0.00 0.00 70.30 70.30 0.98 0.98
A405 0.00 0.00 0.00 0.00 1.05 0.72
A406 0.00 0.00 0.00 0.00 1.30 0.89
A407 0.00 0.00 70.49 70.35 1.31 0.88
J C -

0501 12.74 12.67 11.97 11.89 12.73 12.65
0602 0.000 0.00 5.03 5.06 0.00 0.00
0503 0.00 0.00 0.00 0.00 12.72 12.65
0504 0.00 0.00 5.04 5.03 0.00 0.00
0605 1.99 1.53 1.31 0.89 0.00 0.00
0606 1.99 1.70 1.31 1.15 0.00 0.00
0507 0.00 0.00 0.78 0.00 0.00 0.00
0503 0.00 0.00 0.77 70.70 0.00 0.00
0609 0.00 0.00 0.76 70.60 0.00 0.00
0510 0.00 0.00 0.76 0.00 0.00 0.00
QB11 0.00 0.00 0.75 70.70 0.00 0.00
0512 0.00 0.00 0.76 70.90 0.00 0.00
0613 0.00 0.00 0.76 70.50 0.00 0.00
0514 0.00 0.00 0.76 70.50 0.00 0.00
0515 5.09 5.09 4.29 4.92 4.96 ,1_00
0515 3.62 3.91 2.96 2.50 0.00 0.00
0617 1.99 1.74 1.31 1.08 0.00 0.00
0513 0.00 0.00 0.76 .120 0.00 0.00
0519 0.00 0.00 0.76 70.60 0.00 0.00

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Page 43

SECTION 3

ELECTRICAL
CONTENTS
ELECTRICAL TROUBLESHOOTING GUIDE ...................................................................... 3-2
1. Power(SMPS) Circuit ............................................................................................................... 3-2
2. u-com Circuit ............................................................................................................................ 3-3
3. MPEG Circuit ............................................................................................................................ 3-6
4. Front Circuit(Digitron & Key) ................................................................................................. 3-7
5. RF/Servo Circuit ..................... ..3-8
BLOCK DIAGRAMS ........ ....3-12
1. Overall Block Diagram ........... ....3-12
2. Power (SMPS) Block Diagram ....................... ....3-14
3. RF/CD DSP/DVD DSP/DVD servo Block Diagram. ....3-18
4. Audio Block Diagram ............................................ ....3-19
5. MPEG Block Diagram.. ....3-17
6. u-COM Block Diagram. ....3-18

CIRCUIT DIAGRAMS .................... ....3-19
1. Power (SMPS) Circuit Diagram ............................................................................................ 3-19
2. DVD DSP Circuit Diagram ..................................................................................................... 3-23
3. Drive & RF Circuit Diagram .................................................................................................. 3-25
4. MPEG Circuit Diagram .......................................................................................................... 3-27
5. Audio DM Circuit Diagram .................................................................................................... 3-29
6. u-COM/Expander .................................................................................................................... 3-31
7. DIGITRON & Key Circuit Diagram ........................................................................................ 3-33
8. Scart Circuit Diagram ............................................................................................................ 3-35
9. Jack Circuit Diagram ............................................................................................................. 3-37
- CIRCUIT VOLTAGE CHART .................................................................................................... 3-39
- WAVEFORMS ........................................................................................................................... 3-45
PRINTED CIRCUIT DIAGRAMS ............................................................................................ 3-47
1. MAIN P.C.BOARD ................................................................................................................... 3-47
2. POWER, A/V, FRONT P.C.BOARD ........................................................................................ 3-49
3. KEY P.C.BOARD ..................................................................................................................... 3-51
4. POWER LED P.C.BOARD ...................................................................................................... 3-51

3-1