NAD T 163 Manuel utilisateur

NAD

SERVICE MANUAL

T 163

AV Tuner Preamplifier

DRAFT DATE: 25 MAR 2004

SAFETY INFORMATION

SERVICESAFETYPRECAUTIONS

1. Replacing the fuses

CAUTION:

FOR CONTINUED PROTECTIONAGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE OF

FUSE.

Reference Designator Part Number Description

F751 33-0151009-00-88 FUSE 500mA 250VAC TIME-LAG 5X20mm

5T UL/CSA/VDE/SEMKO

F752 33-0111009-00-88 FUSE 1A 250VAC TIME-LAG 5X20mm

5T UL/CSA/VDE/SEMKO

2. Safety check out

(Only U.S.A. model)

Before returning the product to the customer, make leakage current or resistance measurements to determine

that exposed parts are acceptably insulated from supply circuit.

CONTENTS

DESCRIPTION PAGE

SPECIFICATIONS............................................................................................................................ 4 - 5

REAR PANEL / FRONTPANEL VIEW .................................................................................................. 6

DISASSEMBLYINSTRUCTIONS .......................................................................................................... 7

WIRINGDIAGRAM................................................................................................................................ 8

BLOCKDIAGRAM................................................................................................................................. 9

SPECIALFUNCTION .......................................................................................................................... 10

DETAILS & WAVEFORMS ON SYSTEM & TEST & DEBUGGING .................................................... 10

PCB LAYOUT ................................................................................................................................11 - 19

SCHEMATICDIAGRAM ............................................................................................................... 20 - 32

ICBLOCKDIAGRAM ................................................................................................................... 33 - 40

EXPLODEDVIEW............................................................................................................................... 41

EXPLODED VIEW PARTS LIST................................................................................................... 42 -43

ELECTRICALPARTS LIST .......................................................................................................... 44 - 55

PACKINGDIAGRAM .......................................................................................................................... 56

VERSIONHISTORY .......................................................................................................................... 57

Parts marked with the symbol are critical with regard to the risk of fire and electric shock.

Replace only with parts recommended by the manufacturer.

SPECIFICATIONS

PRE AMPLIFIER SECTION

Rated distortion (2 V@Pre-out, THD 20 Hz-20 kHz FL/C/FR) ≤0.1 %

(2 V@Pre-out, THD 20 Hz-20 kHz SL/SR/BS) ≤0.1 %

Input Sensitivity (2 V@Pre-out, 1 kHz) 520 ± 20 mV

S/N Ratio (A-wtd, 1kHz, 1 W, 2 V@Pre-out, FL/C/FR/SL/SR/BL) ≥≥

≥≥

≥80 dB

Frequency Response (20 Hz - 20 kHz) 0 ± 1.0 dB

Channel Balance (1 dB to -40 dB, 1 kHz) ≤2 dB

(-41 dB to -50 dB, 1 kHz) ≤3 dB

Audio muting at 1 kHz ≥≥

≥≥

≥55 dB

Subwoofer out, 500 mV in (THD at 2 V O/P, 100 Hz) ≤0.5 %

Crosstalk (500 mV input, 1 V@Pre-out) ≥≥

≥≥

≥60 dB

Controls

Bass (at 500 mV in, 1 W out, 100 Hz) ± 10 dB ± 2 dB

Treble (at 500 mV in, 1 W out, 10 kHz) ± 10 dB ± 2 dB

DOLBY DIGITAL SECTION

Channel Difference (FL ref. Track 30) ± 1.2 dB

Frequency Resporse at Dolby config.2 SL Track 46 200 - 20 kHz ± 0.8 dB

SR Track 47 200 - 20 kHz ± 0.8 dB

C Track 44 200 - 20 kHz ± 0.8 dB

Harmonic Distortion (2 V@Pre-out, Audio LPF, Dolby Congfig 1) FL Track 65 997 Hz ≤0.08 %

FR Track 67 997 Hz ≤0.08 %

SL Track 68 997 Hz ≤0.08 %

SR Track 69 997 Hz ≤0.08 %

C Track 66 997 Hz ≤0.08 %

S/N Ratio (TRACK 30 for O/P 1 W, PAUSE) CCIR / ARM ≥≥

≥≥

≥65 dB

Audio LPF ≥≥

≥≥

≥70 dB

A-WTD ≥≥

≥≥

≥70 dB

DOLBY PRO LOGIC II SECTION

Frequency Resporse

I/P mode : L, R : 1 V in, 1 W, Ch L/R 40 Hz 0 ± 2.0 dB

20 kHz 0 ± 2.0 dB

I/P mode : L=R : 1 V in, 1 W, Ch /L/R 40 Hz 0 ± 2.0 dB

Ch C 20 kHz 0 ± 2.0 dB

I/P mode : L=-R : 1 V in, 1 W, Ch SL/SR 40 Hz 0 ± 2.0 dB

20 kHz 0 ± 2.0 dB

S/N Ratio (200 mV in, 1 W, A-WTD w/ 1 k termination)

I/P mode : L, R : 1 kHz, Ch L/R ≥≥

≥≥

≥65 dB

I/P mode : L=R : 1 kHz, Ch C ≥≥

≥≥

≥65 dB

I/P mode : L=-R : 1 kHz, Ch SL/SR ≥≥

≥≥

≥65 dB

THD (2.2 V in, 1 W, w/ 80 kHz LPF, 1 kHz) ≤0.2 %

DTS SECTION

Output Level (Vol 0 dB) : FL/FR/C/SL/SR Track 6 1 kHz 90 ± 10 mV

Channel Difference (FL ref): FL/FR/C/SL/SR Track 6 1 kHz ± 1.0 dB

Harmonic Distortion (Audio Filter) : FL/FR/C/SL/SR Track 10-14 1 kHz ≤≤

≤≤

≤0.08 %

Frequency Response (20 Hz to 20 kHz) Track 26-30 +2/-1.5

Subwoofer Output Level 1 kHz ref at pre-out (FL) Play Track 10, charge to 15 12.5 ± 1.5 dB

AM TUNER SECTION

Input level is expressed as the reading in open circuit

of 75-ohm source impedance signal generator

Usable sensitivity (999/1000 kHz) ≤≤

≤≤

≤30 dBuV

S/N Ratio (5 mV in) ≥≥

≥≥

≥38 dB

THD (5 mV in) ≤≤

≤≤

≤3 %

IF Rejection (450 kHz) ≥≥

≥≥

≥36 dB

Image Rejection (F+2xIF) ≥≥

≥≥

≥28 dB

Selectivity ≥≥

≥≥

≥17 dB

Output 200 ± 20 mV

Loop sensitivity (20 dB S/N)

999/1000 kHz ≤≤

≤≤

≤66 dB

603/600 kHz ≤≤

≤≤

≤66 dB

1404/1400 kHz ≤≤

≤≤

≤66 dB

Frequency Response (100 - 2.3 kHz, 5 mV) ± 6 dB

FM TUNER SECTION *C *AH

Input level is expressed as the reading in open circuit

of 75-ohm source impedance signal generator

Usable sensitivity (98 MHz) ≤≤

≤≤

≤15 dBµV ≤≤

≤≤

≤15 dBuv

S/N Ratio (60 dB, IHF wtd) Mono ≥≥

≥≥

≥63 dB ≥≥

≥≥

≥63 dB

Stereo ≥≥

≥≥

≥63 dB ≥≥

≥≥

≥63 dB

Frequency Response (20 Hz - 15 kHz, 60 dBµ) 0 ± 1.5 dB 0 ± 1.5 dB

Channel Separation (60 dBµ) 100 Hz ≥≥

≥≥

≥30 dB ≥≥

≥≥

≥30 dB

1 k ≥≥

≥≥

≥38 dB ≥≥

≥≥

≥38 dB

10 kHz ≥≥

≥≥

≥30 dB ≥≥

≥≥

≥30 dB

Alternate Channel Selectivity (40 dBµ, ± 400 kHz) ≥≥

≥≥

≥60 dB ≥≥

≥≥

≥45 dB

Capture Ratio (40 dBµ) ≤≤

≤≤

≤3 dB ≤≤

≤≤

≤3 dB

AM Suppression (60 dBµ, 100% Mod. FM, 30% Mod. AM) ≥≥

≥≥

≥48 dB ≥≥

≥≥

≥48 dB

Image Rejection (119.4 MHz) −−

−−

−≥≥

≥≥

≥65 dB

I.F. Rejection (10.7 MHz) ≥≥

≥≥

≥78 dB −−

−−

−

Pilot Suppression (98 MHz) ≥≥

≥≥

≥60 dB ≥≥

≥≥

≥60 dB

THD (60 dBµ, L=R 75 kHz for AH, 40 kHz Dev for C) Mono ≤≤

≤≤

≤0.25 % ≤≤

≤≤

≤0.25 %

Stereo ≤≤

≤≤

≤0.35 % ≤≤

≤≤

≤0.35 %

Auto-Search Sensitivity On ≥≥

≥≥

≥24 dBµ ≥≥

≥≥

≥24 dBµ

Off ≤≤

≤≤

≤15 dBµ ≤≤

≤≤

≤15 dBµ

RDS decode Sensitivity ≤≤

≤≤

≤26 dBµ −−

−−

−

PHYSICAL SPECIFICATIONS

Dimensions (Width x Height x Depth) 435 x 150 x 399 mm

Net Weight 8 Kg (17.60 lbs)

Shipping Weight 10.2 Kg (22.40 lbs)

(17-1/8 x 5-15/16 x 15-3/8")

FRONT PANEL

REAR PANEL / FRONT PANEL VIEW

REAR PANEL

1. MONITOR OUT

2. CD INPUT

3. FM &AMANTENNA

4. DIGITALAUDIO INPUT &

DIGITALAUDIO OUTPUT

5. COMPONENT VIDEO IN &

COMPONENT VIDEO OUT

6. POWER SWITCH

7. 120V / 230V VOLTAGE SELECTOR

8. RS-232

9. AUTO TRIGGER SWITCH

10. AC POWER INLET

11. MS OUT (MULTISOURCE OUT)

12. IR INPUT & OUTPUT

13. DVD, SAT, VCR, VIDEO 4 & VIDEO 5

14. PRE-OUTS / SUBWOOFER OUT

15. TAPE INPUT & OUTPUT

16. DISC INPUT

17. 7.1 CH. INPUTS

1. STANDBY SWITCH

2. STANDBY LED

3. AM / FM

4. DISPLAY

5. MEMORY

6. FM MUTE / MODE

7. PRESET DOWN / UP

8. SEARCH DOWN / UP

9. VFL DISPLAY

10. VOLUME (SETUP)

11. VIDEO &AUDIO

12. TAPE MONITOR

13. DIGITALAUDIOSELECTOR

14. EXT. 7.1

15. SURROUND MODE

16. LEVELS

17. TONE CONTROLS

18. TONE DEFEAT

19. VIDEO 6 INPUT

20. PHONES

DISASSEMBLY INSTRUCTIONS

1. Remove machine screws M4.0 x 8.0 (1to 6) from the side panels.

Remove tapping screw 3.0 x 8.0 (7to 10) from the back panel.

Refer to Figure No. 1.

2. Pull both sides of the TOP COVER slightly outwards 11 and tilt approx. 35° and then remove

in the direction as indicated by the arrow 12. Refer to Figure No. 2.

Figure No. 1

Figure No. 2

PRE-

T B

LTI-

HANNE

NENT

VIDE

DIGITAL B

WER

PPL

ARD

MAIN B

ARD

WER

WIT

ARD

53B

KEYB

VIDE

53A

J90

WER LED B

M TRAN

RME

M TRAN

RME

J754B

56A

J756B

J757B

1-X

ABLE A

Y 4 WAY

77 L=4

2-X

ABLE A

Y 4 WAY

L 2

500

4-X

ABLE A

Y 4 WAY

533

-X

ABLE A

Y 4 WAY

L 2

77 L=2

82-0526135-01-XX

ABLE A

WAY

L24

L=1

-X

ABLE A

WAY

4 L=

300

-X

ABLE A

WAY

.5P

UL2877 L=480MM W

HOUSIN

-X

ABLE A

WAY

77 L=4

-X

ABLE A

WAY

4 L=2

4-X

ABLE A

Y 1 WAY #1

72 BR

WN L=1

-X

ABLE A

Y 1 WAY #1

72 BL

E L=1

82-0426135-05-X

ABLE A

Y 4 WAY

L24

L=4

1-X

ABLE A

WAY

77 L=4

2-1

1-X

ABLE A

Y 1

WAY

77 L=

-2

1-71-X

ABLE 2

L=2

-2

121-71-X

ABLE 2

L=12

-172

830

1-71-X

ABLE 17 PIN

P1.25 UL2896 L=300M

806

1-71-X

ABLE

2-X

ABLE A

WAY

L24

L=12

1-X

ABLE A

Y 1 WAY #1

7 BLA

K L=

360

RING TERMINA

WIRE DIA

RAM

REV.A

ATE 1

-2

003

-2

141-71-X

ABLE 2

L=14

-X

ABLE A

Y 1 WAY #1

7 BLA

K L=1

RING TERMINA

-X

ABLE A

Y 1 WAY #1

7 BLA

K L=7

RING TERMINA

-X

ABLE A

Y 1 WAY #1

7 BLA

K L=1

RING TERMINA

08A

J707A

717

J719

714

J709

721

724

J714

J713

J715

P B

J100

J1009

724

717

J60

J603A

J60

J603B

83A

414

VIDE

-VIDE

OUT

WIRING DIAGRAM

BLOCK DIAGRAM

SPECIALFUNCTION

FEATURE KEYS PRESS ON FRONT PANEL

RESET FOR AH VERSION VIDEO + TONE DEFEAT

RESET FOR C VERSION VIDEO + TONE CONTROLS

NTSC / PAL SELECTION VIDEO + MEMORY

VFD ALL DISPLAY AUDIO + TAPE MONITOR

AM FREQ. STEP AM/FM + FM MUTE

DETAILS & WAVEFORMS ON SYSTEM TEST & DEBUGGING

T89C51RD2 (U202) main clock is at 20MHz (X202)

T89C51RD2 (U201) main clock is at 20MHz (X201)

UPPER - +5V supply to KEYBOARD when power up

LOWER - RESET line (TCM810LENB713) when

power up

UPPER - OUTPUT ENABLE (pin 24) of EPROM

(W27C02) when changing SURROUND MODES

LOWER - CHIP ENABLE (pin 22) of EPROM

(W27C02) when changing SURROUND MODES

SCLK (pin 43 of CS49326)

LRCLK (pin 42 of CS49326)

MCLK (pin 30 of CS49326)

NOTE: The waveforms are based on software version V1.26.

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