NAD-T187-pre-sm维修电路原理图.pdf

《NAD-T187-pre-sm维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《NAD-T187-pre-sm维修电路原理图.pdf（85页珍藏版）》请在收音机爱好者资料库上搜索。

1、NAD SERVICE MANUALT 187 T 187 AV Surround Sound Preamp Processor AV Surround Sound Preamp Processor DRAFT DATE: MAY 2012 RadioFans.CN 收音机爱 好者资料库 2 SAFETY INFORMATION HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC.DFDF RadioF

2、ans.CN 收音机爱 好者资料库 3 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.

3、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 1601100006-902

4、000 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: : USA CANADIAN MODEL ONLY. Parts marked with the symbol are critical with regard to the risk of fi re and electric

5、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 ELE

6、CTRICAL 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 RadioFans.CN 收音机爱 好者资料库 4 SPECIFICATIONS PRE AMPLIFIER SECTION Rated distortion (Ext 7.1 1kHz 500mV input ,Pre

7、-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, 1k 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

8、) 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 k w/o filter) -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 (a

9、t 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 config.2 SL Track 46 200 - 20 kHz 0.8 dB SR Track 47 200 - 20 kHz 0.8 dB C

10、 Track 44 200 - 20 kHz 0.8 dB Harmonic Distortion (1 V, Audio LPF, Dolby Config 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

11、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 i

12、n, 100mV 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, 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, meas

13、ure at T787 Spk out, with ref. to 1W S/N (L,R,C,SL,SR) RadioFans.CN 收音机爱 好者资料库 5 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 %

14、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

15、 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 P

16、reout 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

17、 Usable sensitivity (1008 kHz) 55 dBV 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) 6

18、6 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 dB 9 dBv S/N Ratio (60 dB, IHF wtd) Mono 65 dB 65 dB Stereo 55 dB 55 dB Frequency Response

19、(20 Hz - 15 kHz, 60 dB) 0 3 dB 0 3 dB Channel Separation (60 dB) 100 Hz 30 dB 30 dB 1 k 30 dB 30 dB 10 kHz 20 dB 20 dB AM Suppression (60 dB, 100% Mod. FM, 30% Mod. AM) 40 dB 40 dB Image Rejection (106.1 MHz) 75 dB RadioFans.CN 收音机爱 好者资料库 6 I.F. Rejection (90.1 MHz) 75 dB THD (60 dB, L=R 75 kHz for

20、AH, 40 kHz Dev for C) Mono 0.7 % 0.7 % Stereo 0.1 % 0.1 % Auto-Search Sensitivity On 24 dB 24 dB Off 15 dB 15 dB RDS decode Sensitivity 33 dB 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 Shippi

21、ng Weight 13.5 kg * Gross dimension includes feet, volume knob and extended rear panel terminals. RadioFans.CN 收音机爱 好者资料库 7 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 INP

22、UT (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/VIDE

23、O 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

24、. 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 NAD T 187 AV Surround Sound Preamp Processor T 187 a SOURCE s VOLUME MEMORY sa d f INFO DELETE AM/FM/DBTUNER MODELISTEN MODETONETONE DEFEAT FRONT INPUT/MP 4567 17 ABCED 1213

25、14151611 123 181098 NAD T 187 SUBW SUBW 2 SUBW 1CENTERSURR-BSURRFRONT RL AUDIO PRE-OUT CENTERSURR-BSURRFRONT AUDIO 6AUDIO 5 YPBPR Y321PBPR YPBPR YPBPR OUT AUDIO 4 IN ZONE 4ZONE 3ZONE 2 OUT AUDIO 3 INAUDIO 2AUDIO 1ZONE 2 HDMI IN 6HDMI IN 5 XM DAB 230V VERSION ONLY ANTENNA FMGND AM HDMI IN 4 HDMI IN 3

26、 32 COAXIALOPTICAL 1321 HDMI IN 2HDMI IN 1HDMI OUT 2HDMI OUT 1 SWITCHED POWER +12V TRIGGER OUT 1OUT 2 INOUT 3OUT 2OUT 1INOUT 3 RS-232 ON AC OUTLET 120V 60Hz 120W 1A MAX SWITCHED AC OUTLET 230V 50Hz 120W 0.5A MAX OUT ETHERNET MP DOCK DATA PORT OUT R 7.1 CH INPUT LR AUDIO L S-VIDEO IN 32 1 VIDEO MONIT

27、OR OUT VIDEO HDMI DIGITAL AUDIO 230V VERSION ONLY 123456 1417 789 15101213 16 RadioFans.CN 收音机爱 好者资料库 8 DISASSEMBLY INSTRUCTIONS 1. Remove machine screws M4.0 x 8.0 (x 6pcs) 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 o

28、f 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 RadioFans.CN 收音机爱 好者资料库 9 WIRING DIAGRAM RadioFans.CN 收音机爱 好者资料库 10 WIRING DIAGRAM PARTS LIST Item Database Part Number Description Remark 1 060010036

29、7-902000 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 UL28

30、54 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-

31、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

32、 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

33、.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

34、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

35、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

36、ASSY UL1007 AWG18 1PIN BLACK L=150mm F-INPUT BD- W/ RING “ROHS” END RadioFans.CN 收音机爱 好者资料库 11 BLOCK DIAGRAM RadioFans.CN 收音机爱 好者资料库 12 SPECIAL KEYS Function Keys Notes Factory Reset Source Down + Front/MP Toggle IR Channel Source Down + Power System Info Source Down + Source Up MIC Test Source Down

37、 + Tone Defeat VFD Test Source Down + Display PAL/NTSC Source Down + Memory 9k/10k Source Up + Tuner Band Must reselect AM before change takes effect. XM 1kHz Test Tone Tuner Band + Tuner Mode XM must be selected first. XM Signal Strength Tuner Mode for 0.5 seconds XM must be selected first. XM Diag

38、nostics Mode Tuner Mode for 3 seconds XM must be selected first. Check DAB Module Version Tuner Mode for 3 seconds DAB must be selected first. Enter Diagnostics Mode Source Down + Enter Diagnostic Mode Down Source Down + Cursor Right Diagnostic Mode Up Source Down + Cursor Left Power Off All Zones P

39、ower Toggle or Power Off for 3 seconds RadioFans.CN 收音机爱 好者资料库 13 DETAILS & WAVEFORMS ON SYSTEM TEST & DEBUGGING (T187) RadioFans.CN 收音机爱 好者资料库 14 RadioFans.CN 收音机爱 好者资料库 15 RadioFans.CN 收音机爱 好者资料库 16 RadioFans.CN 收音机爱 好者资料库 17 RadioFans.CN 收音机爱 好者资料库 18 RadioFans.CN 收音机爱 好者资料库 19 RadioFans.CN 收音机爱

40、好者资料库 20 PCB LAYOUT MAIN BOARD - COMPONENT SIDE RadioFans.CN 收音机爱 好者资料库 21 MAIN BOARD - SOLDER SIDE RadioFans.CN 收音机爱 好者资料库 22 KEY BOARD & PHONE BOARD - COMPONENT SIDE RadioFans.CN 收音机爱 好者资料库 23 KEY BOARD & PHONE BOARD - SOLDER SIDE RadioFans.CN 收音机爱 好者资料库 24 CONNECTION BOARD - COMPONENT SIDE RadioF

41、ans.CN 收音机爱 好者资料库 25 CONNECTION BOARD - SOLDER SIDE RadioFans.CN 收音机爱 好者资料库 26 PRE-OUT BOARD - COMPONENT SIDE RadioFans.CN 收音机爱 好者资料库 27 PRE-OUT BOARD - SOLDER SIDE RadioFans.CN 收音机爱 好者资料库 28 VOLUME BOARD - COMPONENT SIDE RadioFans.CN 收音机爱 好者资料库 29 VOLUME BOARD - SOLDER SIDE RadioFans.CN 收音机爱 好者资料库 30 VM150AV ANALOG VIDEO BO