NAD T 187 Manuel utilisateur

NAD

SERVICE MANUAL

T187

T 187

AV Surround Sound Preamp Processor

DRAFT DATE: MAY 2012

SAFETY INFORMATION

HDMI, the HDMI logo and High-Definition Multimedia Interface are

trademarks or registered trademarks of HDMI Licensing LLC.DFDF

SERVICE SAFETY PRECAUTIONS

1. Replacing the fuses

CAUTION:

FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE OF

FUSE.

Reference Designator Database Part Number Description

F8001*AH 1601100002-902000 FUSE 5*20MM TIME-LAG 1.6A 250V “ROHS” “WALTER”

TSD 1.6A 250V

F8001*C 1601100003-902000 FUSE 5*20MM TIME-LAG 1A 250V “ROHS” “WALTER”

TSD1A250V

F8002*AH 1601100003-902000 FUSE 5*20MM TIME-LAG 1A 250V “ROHS” “WALTER”

TSD1A250V

F8002*C 1601100005-902000 FUSE 5*20MM TIME-LAG 500MA 250VAC TSD UL/CSA/

VDE/CCC “ROHS” “WALTER” TSD500MA250V

F8003 1601100006-902000 FUSE TIME-LAG 800MA 250VAC 5X20MM TSD UL/CSA/

VDE/CCC WALTER (ROHS)

F8401 1601100005-902000 FUSE 5*20MM TIME-LAG 500MA 250VAC TSD UL/CSA/

VDE/CCC “ROHS” “WALTER” TSD500MA250V

NOTE:

<*AH > : USA CANADIAN MODEL ONLY.

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

CONTENTS

DESCRIPTION PAGE

SPECIFICATIONS..............................................................................................................................4 - 6

REAR PANEL / FRONT PANEL VIEW ...................................................................................................7

DISASSEMBLY INSTRUCTIONS ...........................................................................................................8

WIRING DIAGRAM .............................................................................................................. ..................9

WIRING PARTS LIST......................................................................................................... ..................10

BLOCK DIAGRAM.................................................................................................................................11

SPECIAL KEYS.....................................................................................................................................12

DETAILS & WAVEFORMS ON SYSTEM TEST & DEBUGGING..................................................13 - 19

PCB LAYOUT.................................................................................................................................20 - 37

SCHEMATIC DIAGRAM.................................................................................................................38 - 51

ELECTRICAL PARTS LIST............................................................................................................52 - 63

IC BLOCK DIAGRAM.....................................................................................................................64 - 75

EXPLODED VIEW.........................................................................................................................76a-76b

EXPLODED VIEW PARTS LIST ....................................................................................................77 - 78

PACKING DIAGRAM.............................................................................................................................79

PACKING PARTS LIST.........................................................................................................................80

.........................................................................................................................

APPENDIX 1 .........................................................................................................................................81

APPENDIX 2 ..................................................................................................................................82 - 84

SPECIFICATIONS

PRE AMPLIFIER SECTION

Rated distortion (Ext 7.1 1kHz 500mV input ,Pre-out 1V with 30kHz LPF, FL/C/FR) ≤ 0.1 %

(Ext 7.1 1kHz 500mV input ,Pre-out 1V with 30kHz LPF, SL/SR/BL/BR) ≤ 0.1 %

S/N Ratio (Ext 7.1 1kHz 500mV input ,Pre-out 1V with A-WTD, 1kΩ termination, ≥ - 85 dB

FL/C/FR/SL/SR/BL/BR)

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 2V Pre-out, 100 Hz) ≤ 0.5 %

(S/N at 2V Pre-out, 100 Hz) ≥ 70 dB

(Min. Vol. hum. 47 kΩ w/o lter) ≥ -56 dBV

(Ext. 7.1 in 6 CH A-wtd) ≥ -65 dBV

Crosstalk (500 mV input, ref @ 1V out, 1 kHz) ≥ -60 dB

Controls

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

Treble (at 500 mV in, ref @ 1V out, 100 Hz) ± 10 dB ± 2

Dialog (Vol. set at ± 6 dB, 2 kHz) ± 4 dB ± 1

DOLBY DIGITAL SECTION

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

Frequency Resporse at Dolby cong.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, Audio LPF, Dolby Cong 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 (31 for 100mV @ Pre-out, Track 35) 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, 1V @ 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, 1V @ 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, 1V @ Pre-out, Ch SL/SR 40 Hz 0 ± 2.0 dB

20 kHz 0 ± 2.0 dB

S/N Ratio (200 mV in, 100mV @ Pre-out, A-WTD w/ 1 kΩ 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, 100mV @ Pre-out, w/ 80 kHz LPF, 1kHz) ≤ 0.2 %

MAX VOL PLII Music mode, 1kHz, 1Vp-p, CD in, ≥ 40 dB

NOISE connect to T787 Ext 7.1, measure at T787

Spk out, with ref. to 1W S/N (L,R,C,SL,SR)

DTS SECTION

Output Level (Vol 0 dB) : FL/FR/C/SL/SR Track 6 1 kHz 200 ± 10 mV

Channel Difference (FL ref) : FL/FR/C/SL/SR Track 6 1 kHz 0± 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 0+2/-1.5 dB

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

NOISE MEASUREMENT

Surround mode noise (Preout) DVD input 1V (L 20-20kHz -72 dB

only), volume @ -12 dB, Enhanced Stereo 1 mode, A-WTD -75 dB

100mV Preout output reference

Surround mode noise (Subwoofer out) DVD input 1V 20-20kHz -75 dB

(L only), volume @ -12 dB, Enhanced Stereo 1 A-WTD -78 dB

mode, 1V Preout output reference

Surround mode noise (Preout) DVD input 1V (L 20-20kHz -48 dB

only), maximum volume, Enhanced Stereo 1 mode, A-WTD -50 dB

100mV Preout output reference

Surround mode noise (Subwoofer out) DVD input 1V 20-20kHz -67 dB

(L only), maximum volume @ -12dB, Enhanced A-WTD -72 dB

Stereo 1 mode, 1V Preout output reference

AM TUNER SECTION

Input level is expressed as the reading in open circuit

of 75-ohm source impedance signal generator

Usable sensitivity (1008 kHz) ≤ 55 dBμV

S/N Ratio (5 mV in) ≥ 38 dB

THD (5 mV in) ≤ 3 %

IF Rejection (603 kHz) ≥ 40 dB

Image Rejection (1404 kHz) ≥ 48 dB

Selectivity (999 or 1017 kHz)≥ 23 dB

Output (1008 kHz) 230 -30/+60 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 - 1.8 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 (98.1 MHz) ≤ 9 dBμ ≤ 9 dBμv

S/N Ratio (60 dB, IHF wtd) Mono ≥ 65 dB ≥ 65 dB

Stereo ≥ 55 dB ≥ 55 dB

Frequency Response (20 Hz - 15 kHz, 60 dBμ) 0 ± 3 dB 0 ± 3 dB

Channel Separation (60 dBμ) 100 Hz ≥ 30 dB ≥ 30 dB

1k ≥ 30 dB ≥ 30 dB

10 kHz ≥ 20 dB ≥ 20 dB

AM Suppression (60 dBμ, 100% Mod. FM, 30% Mod. AM) ≥ 40 dB ≥ 40 dB

Image Rejection (106.1 MHz) − ≥ 75 dB

I.F. Rejection (90.1 MHz) ≥ 75 dB −

THD (60 dBμ, L=R 75 kHz for AH, 40 kHz Dev for C) Mono ≤ 0.7 % ≤ 0.7 %

Stereo ≤ 0.1 % ≤ 0.1 %

Auto-Search Sensitivity On ≥ 24 dBμ ≥ 24 dBμ

Off ≤ 15 dBμ ≤ 15 dBμ

RDS decode Sensitivity ≤ 33 dBμ −

Output level (98.1 MHz) 600 ± 100 mV 600 ± 100 mV

PHYSICAL SPECIFICATIONS

Dimensions (Width x Height x Depth) 435 x 150 x 385 mm (Gross)*

Net Weight 9.6 kg

Shipping Weight 13.5 kg

* Gross dimension includes feet, volume knob and extended rear panel terminals.

FRONT PANEL

REAR PANEL / FRONT PANEL VIEW

REAR PANEL

1. 7.1 CHANNEL INPUT

2. AUDIO PRE-OUT

3. FM/AM ANTENNA TERMINAL

4. XM MODULE INPUT (120V

version model only)

DAB MODULE INPUT (230V

version model only)

1. STANDBY BUTTON

2. STANDBY LED

3. NAVIGATION and ENTER

BUTTONS

4. REMOTE SENSOR

5. VACUUM FLUORESCENT

DISPLAY (VFD)

6. SOURCE

7. VOLUME

8. PHONES

5. ETHERNET/LOCAL AREA NET

WORK (LAN) PORT

6. MP DOCK

7. RS 232

8. +12V TRIGGER OUT / IN

9. IR IN/IR OUT

10. AUDIO 1-6/VIDEO 1-3/S-VIDEO 1-3

AUDIO 3-4 OUT

11. ZONE 2-3-4

12. COMPONENT VIDEO INPUT 1-3

COMPONENT VIDEO OUT

13. HDMI (HDMI IN 1-6 HDMI OUT 1-2)

14. DIGITAL AUDIO (COAXIAL

1-3 OPTICAL 1-3)

DIGITAL AUDIO OUT (OP

TICAL COAXIAL)

15. AC MAINS INPUT

16. SWITCHED AC OUTLET

17. POWER

9. MEMORY

10. INFO

11. AM/FM/DB

12. TUNER MODE

13. LISTEN MODE

14. TONE

15. TONE DEFEAT

16. FRONT INPUT/MP

17. FRONT INPUT PORTS

18. FRONT MP/MIC INPUT

NAD T187

AV Surround Sound Preamp Processor T 187

aSOURCE s

VOLUME

MEMORY

INFO

DELETE

AM/FM/DB TUNER MODE LISTEN MODE TONE TONE DEFEAT FRONT INPUT/MP

4 5 6 7

A B C ED

12 13 14 15 1611

1 2 3

181098

SUBW SUBW 2

SUBW 1 CENTERSURR-BSURRFRONT

R L

AUDIO

PRE-OUT

CENTERSURR-BSURRFRONT

AUDIO 6 AUDIO 5

BPR

Y3 2 1PBPR

YPBPR

OUT AUDIO 4 IN

ZONE 4 ZONE 3 ZONE 2

OUT AUDIO 3 IN AUDIO 2 AUDIO 1 ZONE 2

HDMI IN 6 HDMI IN 5

DAB

230V VERSION ONLY

ANTENNA

FM GND AM

HDMI IN 4

HDMI IN 3

COAXIAL OPTICAL

13 2 1

HDMI IN 2 HDMI IN 1 HDMI OUT 2 HDMI OUT 1

SWITCHED

POWER

+12V TRIGGER

OUT 1 OUT 2

INOUT 3OUT 2OUT 1IN OUT 3

RS-232

AC OUTLET 120V ~ 60Hz

120W 1A MAX

SWITCHED

AC OUTLET 230V ~ 50Hz 120W 0.5A MAX

OUT

ETHERNET

DOCK

DATA PORT

OUT

7.1 CH INPUT

AUDIO

S-VIDEO

VIDEO

MONITOR

OUT

VIDEO

HDMI

DIGITAL

AUDIO

230V VERSION ONLY

1 2 3 4 5 6

14 17

7 8 9

1510 12 13

DISASSEMBLY INSTRUCTIONS

1. Remove machine screws M4.0 x 8.0 (x6pcs) from the side panels.

Remove tapping screw 3.0 x 8.0 (x 3pcs) from the back panel.

Refer to Figure No. 1.

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

remove in the direction as indicated. Refer to Figure No. 2.

Figure No. 1

Figure No. 2

WIRING DIAGRAM

WIRING DIAGRAM PARTS LIST

Item Database Part Number Description Remark

1 0600100367-902000 CABLE ASSY UL1007 AWG26 5PIN 2.5P L=400mm PSU BD-J8002A

“ROHS”

2 0600100153-902000 CABLE ASSY UL1672 AWG16 1PIN BLUE L=140mm PSU BD-J8011A

FASTON 4.8mm “ROHS”

3 0600100154-902000 CABLE ASSY UL1672 AWG16 1PIN BROWN L=140mm PSU BD-J8012A

FASTON 4.8mm “ROHS”

4 0600100150-902000 CABLE ASSY UL2854 AWG26 3PIN 2.5P L=110 “ROHS” VOLUME BD-

J6004C

5 0600100323-902000 CABLE ASSY UL2468 AWG26x1C 7PIN 2.5P L=240mm VOLUME BD-

“ROHS” J2016A

6 0600100392-902000 CABLE ASSY UL1007 AWG26 3PIN 2.5P L=230mm PCU BD-J8004A

WHT/BLK “ROHS”

7 0600100321-902000 CABLE ASSY UL1007 AWG24 2PIN 2.5P L=220mm PCU BD-J8003A

“ROHS”

8 0600100189-902000 CABLE ASSY UL2651 AWG28 20PIN L=120mm PCB KEY BD-J2002A

MOUNT “ROHS”

9 0600100067-902000 CABLE ASSY UL1533 AWG26 6PIN 2.5P L=200mm F-INPUT BD-

“ROHS” J2006A

10 0600100132-902000 CABLE ASSY UL1007 AWG26 6PIN 2.5P L=150mm F-INPUT BD-

“ROHS” J2005A

11 0600100146-902000 CABLE ASSY UL2854 AWG26 3PIN 2.5P L=310 “ROHS” CONN#1-J9006A

12 06001000147-902000 CABLE ASSY UL2854/1533 AWG26 5PIN 2.5P CONN#1-

L=230/320 “ROHS” J9004A/J9005A

13 0600100158-902000 CABLE ASSY UL2854 AWG26 3PIN 2.5P L=230mm CONN#1-

“ROHS” J9008A/B

14 0600100352-902000 CABLE ASSY UL1007 AWG18 2PIN 3.96P L=220mm PSU BD-J9009A

“ROHS”

15 0600100148-902000 CABLE ASSY UL1007 AWG18 1PIN L=320MM W/ CONN#1-

HEADER “ROHS” JP9001A

16 0610100014-902000 CABLE ASSY FFC 11 PINS P1.25 L=280mm “ROHS” TUNER-J6003A

17 0600100032-902000 CABLE ASSY UL1015 AWG16 1PIN GREEN/YELLOW 1-CHASSIS

L=100mm “ROHS” GND 1-AC

OUTLET GND

18 0610100013-902000 CABLE ASSY FFC 19 PINS P0.5 L=400mm VM150X HDMI

BLACK/ WHITE “ROHS” BD-J204

19 0600100356-902000 CABLE ASSY UL1007 AWG28 3PIN 2.5P L=370mm F-HDMI BD-

“ROHS” J9401A

20 0600100162-902000 CABLE ASSY UL1672 AWG18 1PIN BLUE L=80mm 1-INLET/PSU

“ROHS” BD 1-OUTLET/

PSU BD

21 0600100163-902000 CABLE ASSY UL1672 AWG18 1PIN BROWN L=80mm 1-INLET/PSU

“ROHS” BD 1-OUTLET/

PSU BD

22 0600100165-902000 CABLE ASSY UL2651 AWG28 26PIN L=450mm “ROHS” TRIGGER MCU

BD-J2301C

23 0600100148-902000 CABLE ASSY UL1007 AWG18 1PIN L=320MM W/ DSP BD-J11

HEADER “ROHS”

24 0601000366-902000 CABLE ASSY UL1007 AWG18 1PIN BLACK L=150mm F-INPUT BD-

W/ RING “ROHS” END

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