NAD T 163 User manual

NAD
SERVICE MANUAL
T 163
T 163
PHASE II & VC
AV Tuner Preamplifier
DRAFT DATE: 16 AUG 2005

2
SAFETY INFORMATION

3
SERVICESAFETYPRECAUTIONS
1. Replacing the fuses
CAUTION:
FOR CONTINUED PROTECTIONAGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE OF
FUSE.
Reference Designator SCM Part Number Description
F751 370-015100-04(4) 33-0151009-00-88 FUSE 500mA 250VAC TIME-LAG
5X20mm 5T UL/CSA/VDE/SEMKO
F752 370-011100-07(5) 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 / FRONT PANEL VIEW .................................................................................................. 6
DISASSEMBLY INSTRUCTIONS .......................................................................................................... 7
WIRINGDIAGRAM........................................................................................................................... 8 - 9
BLOCKDIAGRAM............................................................................................................................... 10
SPECIALFUNCTION ...........................................................................................................................11
DETAILS & WAVEFORMS ON SYSTEM & TEST & DEBUGGING .....................................................11
PCB LAYOUT ............................................................................................................................... 12 - 20
SCHEMATIC DIAGRAM ............................................................................................................... 21 - 33
ICBLOCKDIAGRAM ................................................................................................................... 34 - 41
EXPLODEDVIEW............................................................................................................................... 42
EXPLODED VIEW PARTS LIST................................................................................................... 43 -44
ELECTRICALPARTS LIST .......................................................................................................... 45 - 56
PACKING DIAGRAM .......................................................................................................................... 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.

4
SPECIFICATIONS
PRE AMPLIFIER SECTION
Rated distortion (1 V@Pre-out, THD 20 Hz-20 kHz FL/C/FR) ≤0.1 %
(1 V@Pre-out, THD 20 Hz-20 kHz SL/SR/BS) ≤0.1 %
Input Sensitivity (1 V@Pre-out, 1 kHz) 390 ±±
±±
±20 mV
S/N Ratio (A-wtd, 1kHz, 1 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 V @Pre-out, 100 Hz) ±±
±±
±10 dB ±±
±±
±2 dB
Treble (at 500 mV in, 1 V @Pre-out, 10 kHz) ±±
±±
±10 dB ±±
±±
±2 dB
DOLBY DIGITAL SECTION
Channel Difference (FL ref. Track 30) ±±
±±
±1.2 dB
Frequency Response 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 (1 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 100 mV, PAUSE) CCIR / ARM ≥≥
≥≥
≥65 dB
Audio LPF ≥≥
≥≥
≥70 dB
A-WTD ≥≥
≥≥
≥70 dB
DOLBY PRO LOGIC II SECTION
Frequency Response
I/P mode : L, R : 1 V in, 100 mV @Pre-out, Ch L/R 40 Hz 0±±
±±
±2.0 dB
20 kHz 0±±
±±
±2.0 dB
I/P mode : L=R : 1 V in, 100 mV @Pre-out, 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, 100 mV @Pre-out, Ch SL/SR 40 Hz 0±±
±±
±2.0 dB
20 kHz 0±±
±±
±2.0 dB
S/N Ratio (200 mV in, 100 mV @Pre-out, 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, 100 mV @Pre-out, w/ 80 kHz LPF, 1 kHz) ≤0.2 %

5
DTS SECTION
Output Level (Vol 0 dB) :FL/FR/C/SL/SR Track 6 1 kHz 70 ±±
±±
±10 mV
Channel Difference (FL ref): FL/FR/C/SL/SR Track 6 1 kHz ±±
±±
±1.5 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 dBµµ
µµ
µV
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 dBµµ
µµ
µ≤≤
≤≤
≤15 dBµµ
µµ
µv
S/N Ratio (60 dB, IHF wtd) Mono ≥≥
≥≥
≥63 dB ≥≥
≥≥
≥63 dB
Stereo ≥≥
≥≥
≥63 dB ≥≥
≥≥
≥63 dB
Frequency Response (20 Hz - 15 kHz, 60 dB) 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 dB ±±
±±
±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
µ
µµ
µ≥≥
≥≥
≥24 dBµµ
µµ
µ
Off ≤≤
≤≤
≤15 dBµµ
µµ
µ≤≤
≤≤
≤15 dBµµ
µµ
µ
RDS decode Sensitivity ≤≤
≤≤
≤26 dBµµ
µµ
µ−−
−−
−
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)

6
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. DIGITALAUDIO SELECTOR
14. EXT. 7.1
15. SURROUND MODE
16. LEVELS
17. TONE CONTROLS
18. TONE DEFEAT
19. VIDEO 6 INPUT
20. PHONES

7
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

8
WIRING DIAGRAM
AUDIO BOARD
PRE-OUT BOARD
MULTI-CHANNEL
COMPONENT
VIDEO BOARD
DIGITAL BOARD
TRIGGER
BOARD
POWER SUPPLY
BOARD
MAIN BOARD
POWER SWITCH
BOARD
J203A
J753B
KEYBOARD
J350B
J204B J901B
TUNER
J3103B J709B
VIDEO 6 BOARD
J204A
J350A
J753A
J901A
POWER LED BOARD
FROM TRANSFORMER
J751B
FROM TRANSFORMER
J754B
J757A J756A
J756B J757B
T163 PHASE II WIRE DIAGRAM REV.A DATE 12-7-2005
J705A
J708A
J707A
J710A
J712A
J711A
J717A
J719A
J720A
J715A
J713A J714A
J709A
J724A
J783A
J782
J714BJ713B
J604B
J203B
J715B
DSP BOARD
J1010B
J1009B
J604A
J1009A
724B
J719B
J717B
J601A
J602A
J603A
J601B
J602B
J603B
J708B
J707B
J705B J712B
J711B
J710B
M783A
J414B
J414A
J1010A
P4401
P4402
J201
J3103A
J607B
J607A
J606A
J606B
VIDEO BOARD
S-VIDEO BOARD
MS OUT
BOARD
2
3
4
5
5
98
10
11
12
13
14
15
16
19
20
22
23
22
17 18
1

9
ITEM PART NO. DESCRIPTION REMARK
1 276-042613-08 CABLE ASSY 4 WAYS AWG=26 2.5P AUDIO BD-J3103A
L=450mm YB03091104-02
2 276-022613-32 CABLE ASSY 2 WAYS AWG26X1C UL1533 DIGITAL BD-J1009A
L=360mm (UL LABEL)
3 276-042613-07 CABLE ASSY 4 WAYS AWG=26 2.5P UL2468 DIGITAL BD-J1010A
L=400mm
4 276-042613-10 CABLE ASSY 4 WAYS AWG=26 2.5P UL2877 DIGITAL BD-J901A
L=430mm
5 276-011843-01 CABLE ASSY 1 WAY AWG18 UL1007 BLACK KEYBOARD-J201
L=100mm W/ RING TERMINAL
6 276-052613-08 CABLE ASSY 5 WAYS #26 2.5P UL1007 LED BD-J204A
L=160mm
7 276-032613-18 CABLE ASSY 3 WAYS AWG=26 2.5P MAIN BD-J606B,
L=110mm J607B
8 276-032613-29 CABLE ASSY 3 WAYS AWG26X2C UL2547 MAIN BD-J715A
L=210mm (UL LABEL)
9 276-082613-22 CABLE ASSY 8 WAYS AWG=26X3C MAIN BD-J709A
L=480mm
10 276-052613-06 CABLE ASSY 5 WAYS AWG=26 2.5P UL2468 MS BD-M783B
L=120MM
11 276-032613-06 CABLE ASSY 3 WAYS AWG=26 2.5P UL2854 PO BD-J724B
L=250mm
12 276-042613-07 CABLE ASSY 4 WAYS AWG=26 2.5P UL2468 PSU BD-J753A
L=400mm
13 276-011643-04 CABLE ASSY 1 WAY AWG=16 UL1672 BROWN PW BD-J756A
L=160mm
14 276-011643-05 CABLE ASSY 1 WAY AWG=16 UL1672 BLUE PW BD-J757A
L=160mm
15 276-082613-20 CABLE ASSY 8 WAYS AWG=26 2.5P UL1007 SV BD-J414A
L=380mm
16 276-102613-12 CABLE ASSY 10 WAYS AWG=26 2.5P UL1007 TR BD-J350A
L=540mm (UL LABLE)
17 276-011643-06 CABLE ASSY 1 WAY AWG16 UL1007 BLACK V6 BD-P4402
L=70mm W/ RING TERMINAL
18 276-011843-01 CABLE ASSY 1 WAY AWG18 UL1007 BLACK V6 BD-P4401
L=100mm W/ RING TERMINAL
19 238-172829-00 FFC CABLE 17 PINS P1.25 UL2896 L=290mm J720C
W/ SHIELD
20 238-200012-00 FFC CABLE 20 PINS P1.25 L=120mm J604C
W/ SHIELD
21 238-280016-00 FFC CABLE 28 PIN P1.25 L=160mm J602C,J603C
W/ SHIELD
22 238-280120-00 FFC CABLE 28 PINS P1.25 L=200mm J713C,J714C
W/SHIELD
23 238-302807-00 FFC CABEL 30 PINS P1.25 L=70mm J601C

10
BLOCKDIAGRAM

11
S
PE
C
IALFUN
C
TI
O
N
FEA
TURE
AA
KEY
S
PRE
SS
O
N FR
O
NT P
ANEL
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
COLOUR BAR GENERATOR AUDIO + DIGITAL AUDIO
(VC-version units only) (all monitor outputs will show the generated colour bar)
D
ETAIL
S
&
WAVEF
O
RM
S
O
N
S
Y
S
TEM TE
S
T
&
DEB
UGG
IN
G
T
89
C
51RD2 (U202) main clock is at 20MHz (X202
)
T
89
C
51RD2 (U201) main clock is at 20MHz (X201
)
U
PPER - +5V supply to KEYB
O
ARD when power up
LO
WER - RE
S
ET line (T
C
M810LENB713) when
po
w
er
u
p
U
PPER -
O
UTPUT ENABLE (pin 24) of EPR
OM
(
W27
C
02) when changing
S
URR
O
UND M
O
DE
S
LO
WER -
C
HIP ENABLE (pin 22) of EPR
OM
(
W27
C
02) when changing
S
URR
O
UND M
O
DE
S
SC
LK (pin 43 of
CS
49326
)
L
R
C
LK (pin 42 of
CS
49326)
MC
LK (pin 30 of
CS
49326
)
N
O
TE: The wave
f
orms are based on so
f
tware version V
2
.
1
3
V
.

12
PCBLAYOUT
AUDIO BOARD
COMPOSITE VIDEO BOARD

13a
COMPONENT VIDEO BOARD
DIGITAL BOARD

13b
COMPONENT VIDEO BOARD - COMPONENT SIDE
COMPONENT VIDEO BOARD - COPPER SIDE

13c
COMPONENT VIDEO BOARD revision 3 - COMPONENT SIDE
COMPONENT VIDEO BOARD revision 3 - COPPER SIDE

14
DSP BOARD - COPPER SIDE
DSP BOARD - COMPONENT SIDE

15
KEY BOARD / LED BOARD
- COMPONENT SIDE KEY BOARD / LED BOARD - COPPER SIDE

16
MAIN BOARD

17
MULTI-CHANNEL BOARD - COMPONENT SIDE
MULTI-CHANNEL BOARD - COPPER SIDE

18
POWER SUPPLY (STANDBY)
S-VIDEO BOARD