NAD T 755 Service Manual
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NAD T 755 Service Manual

Surround sound receiver
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DRAFT DATE: AUGUST 2009
NAD
T 755
Surround Sound
Receiver

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Summary of Contents for NAD T 755

  • Page 1 DRAFT DATE: AUGUST 2009 T 755 Surround Sound Receiver...
  • Page 2 633 GRANITE COURT, PICKERING,ON, CANADA L1W 3K1 MODEL T755 AV SURROUND SOUND RECEIVER POWER RATING 120V 60Hz 6A DESIGNED & ENGINEERED IN CANADA, CUSTOM MANUFACTURED TO NAD SPECIFICATIONS IN CHINA NAD ELECTRONICS INTERNATIONAL MODEL T755 AV SURROUND SOUND RECEIVER POWER RATING 230V 50Hz 3A DESIGNED &...

  • Page 3: Table Of Contents

    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 20-001-0072-90 FUSE TIME-LAG 6.3A 250VAC 5X20mm TSD UL/CSA/VDE/CCC WALTER F8001*C,CT 20-001-0072-90 FUSE TIME-LAG 6.3A 250VAC 5X20mm TSD UL/CSA/VDE/CCC...

  • Page 4: Specifications

    SPECIFICATIONS POWER AMPLIFIER SECTION ≤ 0.1 % Rated distortion (Rated power level into 8 ohms, THD 20 Hz-20 kHz FL/C/FR) ≤ 0.1 % (Rated power level into 8 ohms, THD 20 Hz-20 kHz SL/SR) 1 ± 0.1 V Input Sensitivity (ref. 8 ohms, 1 kHz) ≥...
  • Page 5 DTS SECTION Output Level (Vol 0 dB) : FL/FR/C/SL/SR Track 6 1 kHz 0.5 -0.2/+0.8 W 0 ± 1.0 dB Channel Difference (FL ref) : FL/FR/C/SL/SR Track 6 1 kHz ≤ 0.08 % Harmonic Distortion (Audio Filter) : FL/FR/C/SL/SR Track 10-14 1 kHz Frequency Response (20 Hz to 20 kHz) Track 26-30...

  • Page 6: Rear Panel / Front Panel View

    REAR PANEL / FRONT PANEL VIEW REAR PANEL IR IN/OUT 13. 7.1 CH INPUT RS-232 +12V TRIGGER OUT 14. AUDIO PREOUT COMPONENT IN/OUT 15. DIGITAL AUDIO IN/OUT SOFT CLIPPING AUDIO/VIDEO 1~6 IN FM,AM ANTENNA INPUT 16. HDMI 10. AUDIO/VIDEO 3/4 OUT XM MODULE INPUT(AH) 17.

  • Page 7: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS Remove machine screws M4.0 x 8.0 (x 6pcs) from the side panels. Remove tapping screw 3.0 x 8.0 (x 4pcs) from the back panel. Refer to Figure No. 1. Figure No. 1 Pull both sides of the TOP COVER slightly outwards and tilt approx. 35 ° and then remove in the direction as indicated.

  • Page 8: Wiring Diagram

    WIRING DIAGRAM...
  • Page 9 WIRING DIAGRAM PARTS LIST Item Database Part Number Description Remark 17-012-3379-90 CABLE ASSY 2 WAYS AWG18 3.96P UL1007 MAIN BD- L=250mm(RoHS) J7004A 17-012-3380-90 CABLE ASSY 3 WAYS AWG18 3.96P UL1007 MAIN BD- L=250mm(RoHS) J7005A 17-012-3382-90 CABLE ASSY 10 WAYS AWG26 2.5P UL1533 MAIN BD- L=300mm(RoHS) J6005A...

  • Page 10: Block Diagram

    BLOCK DIAGRAM...

  • Page 11: Special Function

    SPECIAL FUNCTION Function Keys Notes Factory Reset AH Source Down + Front/MP Factory Reset C Source UP + Front/MP Toggle IR Channel Source Down + Power Check MCU & DSP Version Source Down + Source UP Check Current Video Mode Source Down + Tone Controls MIC Test Source Down + Tone Defeat...
  • Page 12 U1001 Pin 9 - Serial clock (Analog), 3.072MHz U1001 Pin 9 - Serial clock (PCM), 2.8224MHz U2001 Pin 12 - X2001A output, 20.000MHz U4520 Pin 7 - X4503 output, 13.500MHz U4507 Pin 75 - X4501 output, 14.31818MHz...

  • Page 13: Adjustment Points Diagram / Amplifier Adjustment

    ADJUSTMENT POINT DIAGRAM LEFT/RIGHT CHANNEL AMPLIFIER BOARD AMPLIFIER ADJUSTMENT Idle Current Rotate R5018 fully anti-clockwise. Connect DC millivoltmeter to P5001. Turn on the unit. Adjust R5018 for 2mV +/- 0.2mV reading on voltmeter. Leave power on for at least 5 min, and check for idle current again. Repeat for other channels.

  • Page 14: Pcb Layout

    PCB LAYOUT POWER AMPLIFIER FRONT AMP BOARD-COPPER SIDE...
  • Page 15 FRONT AMP BOARD-COMPONENT SIDE...
  • Page 16 SURROUND AMP BOARD-COPPER SIDE...
  • Page 17 SURROUND AMP BOARD-COMPONENT SIDE...
  • Page 18 DSP BOARD - COPPER SIDE...
  • Page 19 DSP BOARD - COMPONENT SIDE...
  • Page 20 KEY BOARD - COMPONENT SIDE KEY BOARD - COPPER SIDE...
  • Page 21 F-VIDEO BOARD - COPPER SIDE F-VIDEO BOARD - COMPONENT SIDE...
  • Page 22 MAIN BOARD -COMPONENT SIDE...
  • Page 23 MAIN BOARD -COPPER SIDE...
  • Page 24 TRIGGER BOARD - COMPONENT SIDE TRIGGER BOARD - COPPER SIDE SPEAKER BOARD - COMPONENT SIDE...
  • Page 25 COMPONENT BOARD-COMPONENT SIDE COMPONENT BOARD-COPPER SIDE...
  • Page 26 HDMI BOARD-COPPER SIDE...
  • Page 27 HDMI BOARD-COMPONENT SIDE...
  • Page 28 PSU-STD BOARD-COMPONENT SIDE CONNECTOR-3 BOARD-COMPONENT SIDE...

  • Page 29: Schematic Diagram

    SCHEMATIC DAIGRAM CONNECTOR-3...
  • Page 30 POWER SUPPLY(STAND BY)
  • Page 31 SPEAKER...
  • Page 32 F-VIDEO...
  • Page 33 DSP-1 J2 0 0 4 B +5 V _ K +5 V _ K TO M A IN J2 0 0 4 A DS P_ F L 4 0 9 4 (4 )_ S TB S TR O B E V DD H P_ L R 6 2 3 2...
  • Page 34 DSP-2 R 1 0 0 5 4 7 k U 1 0 1 8 -F +5 V _ DS P +3 .3 V D L1 0 0 1 7 4 H C U 0 4 C 1 0 0 1 2 2 5 u H C 1 0 0 3 C 1 0 0 4...
  • Page 35 DSP-3 +1 2 V _ A U 1 0 3 6 U 1 0 2 3 -A Q 1 0 2 0 LM 1 1 1 7 -5 .0 N JM 4 5 6 0 C 1 2 6 4 R 1 1 8 8 2 S C 4 6 9 5 O U T...
  • Page 36 KEYBOARD +5 V _ K +5 V _ K V D2 2 0 1 R 2 2 3 0 R 2 2 3 1 1 0 k 1 0 k M 2 2 0 1 V F D-1 6 -B T-1 3 0 G IN K E C 1 6 2 1 0 2 F 2 B -H A 1 -0 0 2 R 2 2 3 2 1 0 0 +5 V _ K...
  • Page 37 POWER AMPLIFIER FRONT-CH J5 3 0 4 A TO S PE A K E R M 5 0 0 2 -C F L (S PE A K E R A ) C 5 0 0 2 R 5 0 1 3 C 5 0 1 2 M 5 0 0 2 -B F R O N T LE F T...
  • Page 38 POWER AMPLIFIER SURROUND-CH-1 M 5 6 0 1 -B J5 4 0 1 A 2 4 V DC C 5 4 0 2 R 5 4 1 3 4 7 J5 6 0 2 A TO C O N N E C TIO N B O A R D J5 4 0 1 B S U R R O U N D 2 5 0 V A C /5 A N .I.
  • Page 39 POWER AMPLIFIER SURROUND-CH-2 +1 2 V R 5 6 3 1 +1 2 V 2 k 2 W U 5 6 0 5 -A R 5 6 3 9 N JM 4 5 6 0 C 5 6 2 2 1 0 0 k D5 6 1 1 0 .1 u...
  • Page 40 HDMI J4 3 0 1 IN PU T 1 IN 1 _ DO + D0 + IN 1 _ DO - D0 - IN 1 _ D1 + D1 + IN 1 _ D1 - D1 - IN 1 _ D2 + D2 + IN 1 _ D2 - C 4 3 2 9...
  • Page 41 TRIGGER +5 .3 V U 2 3 0 2 TPS 2 0 1 1 A G N D O U T8 N O T IN S E R TE D F O R C E IN 2 O U T7 IN 3 O U T6 C 2 3 2 6...
  • Page 42 COMPONENT VIDEO X 4 5 0 1 1 4 .3 1 8 1 8 M H z O S D_ V S C 4 5 7 3 C 4 5 7 2 +5 V _ V C 2 2 p 2 2 p 5 0 V O S D_ H S...
  • Page 43 MAIN BOARD-1 C 4 1 2 1 R 4 1 2 7 2 .2 u 5 0 V M 4 1 0 1 V IDE O 1 IN 1 /1 6 W V G N D C 4 1 2 2 R 4 1 2 8 2 .2 u 5 0 V 1 /1 6 W...
  • Page 44 MAIN BOARD-2 J6 0 1 0 B J6 0 1 0 A A G N D A G N D C 6 9 0 1 7 .1 _ F L 7 .1 _ F L 7 .1 _ F L 7 .1 _ F R 7 .1 _ F R R 6 9 0 1 1 k...
  • Page 45 MAIN BOARD-3 R 6 9 8 0 0 U 6 5 0 2 -A R 6 5 2 8 R 6 5 2 9 R 6 5 3 3 R 6 5 2 3 N .I. C 6 5 1 8 C 6 5 2 1 4 7 0 1 /1 6 W 4 7 0 1 /1 6 W...
  • Page 46 MAIN BOARD-4 J2 0 0 5 A J2 0 0 6 A J2 0 0 2 A J2 0 0 1 A +5 V _ K +5 V _ K J2 0 0 9 A To F -IN PU T J2 0 0 5 B To F -IN PU T J2 0 0 6 B To K eyboard J2 0 0 2 B To S U R R A M P J2 0 0 1 B...
  • Page 47 MAIN BOARD-5 A C 8 .8 V 4 D7 0 0 1 R S 6 0 5 +5 V _ DS P U 7 0 0 1 6 0 0 V 6 A 7 8 0 5 O U T A C 8 .8 V 3 G N D C 7 0 2 9...

  • Page 48: Electrical Parts List

    ELECTRICAL PARTS LIST ***SEE PAGE 92 FOR SINGLE CHANNEL SERVICE KIT # 52-940-0755-90 POWER AMP MODULE PCB ASSEMBLY 50-940-0755-90 T755 PWR AMP MODULE MAIN BOARD PCB ASSEMBLY*AH 50-901-0755-90 T755 AH MAIN ASSY PCB ASSEMBLY*C,CT 50-902-0755-90 T755 C/CT MAIN ASSY REGULATORS U7001-7002 U7004 U7007 01-004-0048-00 IC VOLT REG 5V 1A TO-220 NJM7805FA...
  • Page 49 U2001 01-010-0025-90 IC M30280FCHP-U3 16-BIT MCU 128K ROM 12K RAM QFP 80P6Q-A U2007 01-010-0030-90 IC MCU 8 BITS 8K ROM 512 BYTES RAM TQFP ATMega48-20 U2002 01-011-0034-90 IC TWO-WIRE SERIAL EEPROM 16K AT24C16AN-10SU-2.7 SMD 8PIN SOIC U2009 01-012-0059-00 IC Logic Quad 2-Input Nand Gate Sop 74HC00D U4103-4106 01-012-0062-00...
  • Page 50 R4240-4241 02-007-0289-00 RES SMD 68 OHM +/-1% 1/16W 0603 R2026-2029 R2035-2038 R6985-6989 02-007-0292-00 RES SMD 2.2K OHM 1% 1/16W 0603 R6606-6607 R6617-6618 R6628-6629 02-007-0294-00 RES SMD 470 OHM 5% 1/16W 0603 R6639-6640 R6539 R6706-6707 R6540 R6517-6518 R6717-6718 R6507 R6806-6807 R6817-6818 R6828-6829 R6528-6529 R6506 R7002 02-007-0306-00...
  • Page 51 C4108 C4112 C4115 C4124 C4126 03-009-0144-00 CAP ELEC SMD 470uF 16V +/-20% C4128-4130 C4139-4140 C4145 C4146 10x10.5 C2020 03-009-0153-00 CAP ELEC 1uF/50V ±20% B CASE 4 X SMD DIODES D6901-6904 04-006-0019-00 SMD Diode RECT 1A/400V DO-214AC GS1G M4 GS1G D2001 D4101-4106 D6905-6909 04-006-0021-90 SMD DIODE LL4148 SOD80 D6501-6504 D6601-6604...
  • Page 52 RELAYS M8002*AH 07-005-0056-90 RELAY POWER DC 12V 20A 220VAC ME-14FW-012-HTS UL/CUL M8002*C,CT 07-005-0044-90 RELAY MINIATURE 12VDC/10A 1P1T TV-5 SDT-SS-112DM S/CSA/UL STANDBY-TRANSFORMER T8001 10-005-0186-90 Transformer PW EL-35 100V/220V T05382B FUSES F8001 20-001-0072-90 FUSE TIME-LAG 6.3A 250VAC 5X20mm TSD UL/CSA/VDE/CCC F8002 20-001-0076-90 FUSE 1.6A 250V TIME LAG LBC 5X20mm TSD UL/CSA/VDE/SEMKO F8002*C,CT...
  • Page 53 RELAYS M5001-5003 07-005-0055-90 RELAY POWER DC12V 8A/250V 2P1T PCB MOUNT ME-11-012-2H4 THERMISTOR M5301 20-004-0039-00 THERMISTOR PTC 100 OHM PTFM04B H471Q2N34B0 SMD IC U5302 01-014-0043-00 IC LOW POWER DUAL OPERATIONAL AMPLIFIERS SMD SOIC-8 AS358MTR-E1 SMD RESISTORS R5010 R5110 R5210 R5304 02-007-0026-00 RES SMD 47K OHM 5% 1/10W 0805 R5306 02-007-0028-00...
  • Page 54 SMD CAPACITORS C5304 C5305 C5309 03-009-0075-00 CAP CER SMD 0.1uF 50V 20% Y5V 0603 C5005 C5008 C5105 C5108 C5205 C5208 03-009-0111-00 CAP CER SMD 100pF 50V 10% X7R 0603 C5009 C5109 C5209 03-009-0112-00 CAP CER SMD 1nF 50V 10% X7R 0603 C5006 C5106 C5206 03-009-0124-00 CAP CER SMD 10pF 50V 5% NPO 0603...
  • Page 55 CAPACITORS C5410 C5411 C5510 C5511 03-002-0134-00 CAP ELEC GR 100uF 100V 20% C5414 C5514 C5617-5620 03-004-0031-00 MPF CAP 104J/63V 5% Mini Box C5407 C5507 03-004-0123-00 MPF CAP 0.15uF/100V/154J 5% Mini Box DIODES D5615-5616 04-001-0046-00 DIODE RECT 12A/600V TO-220 TYN612 D5617 04-005-0021-90 DIODE BRI 10A/400V KBK10G TRANSISTORS...
  • Page 56 R5439 R5539 02-007-0336-00 RES SMD 75 OHM 1% 1/10W 0805 R5640 R5639 02-007-0338-00 RES SMD 100K OHM 5% 1/10W 0805 R5437 R5537 02-007-0339-00 RES SMD 1M OHM 5% 1/10W 0805 R5436 R5536 R5650 R5654 02-007-0342-00 RES SMD 22K OHM 5% 1/10W 0805 R5405 R5409 R5505 R5509 02-007-0343-00 RES SMD 22 OHM 5% 1/10W 0805...
  • Page 57 M1001-1003 04-009-0004-90 FIBRE OPTIC RECEIVING UNIT 700nm JSR1164-D INDUCTORS L1008-1009 L1020-1021 07-002-0132-90 IND CHOKE 10uH 10% EC36 AXIAL EC36-100K L1007 07-002-0134-90 IND CHOKE 22uH +/-10% AXIAL EC24-220K L6010-6011 07-002-0144-90 IND CHOKE 180uH +/-10% AXIAL EC24-181K RELAY M6004 07-005-0049-90 RELAY DC12V 0.5A/125V 2P2T KH1- 12VDC PCB MOUNT TACT SWITCH S1001...
  • Page 58 U1034 01-027-0008-90 IC PCM1609A 24-BIT 192kHz 8 CH DAC SMD 48 PINS LQFP U1035 01-027-0009-90 IC PCM1742KE 24-BIT 192kHz STEREO DAC SMD 16 PINS SSOP U6002 01-027-0010-90 IC M61545AFP 2-CH ELECTRONIC VOLUME SMD 8 PINS SOP RENESAS U6001 01-027-0012-90 IC R2S15205FP 8 CH ELECTRONIC VOLUME W/ INPUT SWITCH &...
  • Page 59 R1045 R1187 R1099 R1108 R1140 R1150 02-007-0301-00 RES SMD 620 OHM +/-5% 1/16W 0603 R1160 R1115 R1241 R1177 R1130 R6186 R6189 02-007-0306-00 RES SMD 1K OHM 1% 1/16W 0603 R1050 R6166 R6169-6170 02-007-0312-00 RES SMD 20K OHM 1/16W 1% 0603 R6074 02-007-0319-00 RES SMD 300 OHM 5% 1/16W 0603...
  • Page 60 C1014 C1016 C1018 C1020 C1024 03-009-0136-00 CAP ELEC SMD 10uF 16V +/-20% 4X5.4 C1031 C1033-1034 C1046 C1052 C1069 C1071 C1076 C1078 C1173 C1180 C1187 C1194 C1201 C1208 C1215 C1222 C1247 C1257 C1264 C1269 C1294-1295 C1312 C1326 C1328 C1329 C1331 C1333 C1340 C1335 C6200-6201 C6243-6244 C1055 C6261 03-009-0138-00...
  • Page 61 SMD INDUCTORS L1018*AH 07-007-0017-90 IND 2.7uH SMD 10% 0805 CI201209-2R7KG L1001-1004 10-009-0005-90 DIGITAL AUDIO INTERFACE SIGNAL TRANSFORMER ER9.5 225uH X1001C 14-004-0020-90 CRYSTAL OSCILLATOR 24.576MHz 3.3V 50ppm 30pF SMD X1003*AH 14-004-0024-90 CRYSTAL OSCILLATOR 45.1584MHz 3.3V 50ppm 30pF SMD KEYBOARD PCB ASSEMBLY 50-922-0755-90 T755 KEYBOARD ASSY CAPACITORS...
  • Page 62 SMD DIODES D2204-2209 04-006-0021-90 SMD Diode LL4148 SOD80 D2203 04-007-0031-00 DIODE ZENER SMD 6.2V 500mW 5% SOD123 MMSZ5234B SMD TRANSISTORS Q2201 05-004-0030-90 XTR 2SD1918 NPN POWER 160V/1.5A 80MHz HFE 120-390 SMD Q2202-Q2204 Q2205 Q2206 05-004-0037-90 TRANSISTOR SS PNP HFE30 250MHz SPT DTA114EKAT146 JUMPERS JMP1 JMP3 JMP5-12 JMP16...
  • Page 63 SMD ICS U2304*C,CT 01-004-0056-90 IC VOLT REG. LOW DROPOUT 3.3V 1A SOT-223 LM1117S-3.3 U2303 01-012-0075-90 IC 74HC86D LOGIC QUAD 2-INPUT EXCLUSIVE-OR GATE SMD 14 PINS SOIC D2308*AH 01-012-0076-90 IC CM1213 8-Channel Low Capacitance ESD Protection Arrays CM1213-08MR U2301 01-015-0005-90 IC RS-232 DRIVERS AND RECEIVERS ST232BDR U2302 01-028-0003-90...
  • Page 64 COMPONENT VIDEO BOARD PCB ASSEMBLY 50-932-0755-90 T755 COMPONENT VIDEO ASSY INDUCTORS L4502-4503 07-002-0135-90 IND CHOKE 5.6uH +/-10% AXIAL EC24-5R6K CRYSTAL X4501 14-002-0025-90 CRYSTAL 14.31818MHz 30ppm 16pF HC-49S 01-CR1-02-14M318-16 JACKS M4001-4004 15-003-0025-90 RCA JACK 3 G-BL-R PCB MOUNT GOLD (W COVER) SMD ICS U4504 01-004-0056-90...
  • Page 65 R4609-4610 02-007-0372-00 RES SMD 220 OHM 5% 1/16W 0603 R4588 R4590 02-007-0393-00 RES SMD 270 OHM 5% 1/16W 0603 R4622 02-007-0434-00 RES SMD 56 OHM 5% 1/16W 0603 R4536 R4633 02-007-0435-00 RES SMD 10K OHM +/-5% 1/16W 0603 R4509-4510 02-007-0436-00 RES SMD 12 OHM +/-5% 1/16W 0603 SMD CAPACITORS C4545-4551 C4621 C4623...
  • Page 66 D4301-4304 01-012-0076-90 IC CM1213 8-Channel Low Capacitance ESD Protection Arrays CM1213-08MR U4301 01-028-0002-90 IC TMDS341PFC 3-TO-1 DVI/HDMI SWITCH SMD 80 PINS PQFP SMD RESISTORS R4640 02-007-0055-00 RES SMD 750 OHM 0805 5% R4305 R4307 R4308 02-007-0288-00 RES SMD 0 OHM 5% 1/16W 0603 R4301 02-007-0326-00 RES SMD 4.64K OHM 1% 1/10W 0805...
  • Page 67 R9314 R9316 02-007-0292-00 RES SMD 2.2K OHM 1% 1/16W 0603 R9321-9322 02-007-0294-00 RES SMD 470 OHM 5% 1/16W 0603 R9318 02-007-0319-00 RES SMD 300 OHM 5% 1/16W 0603 R9302-9304 02-007-0357-00 RES SMD 75 OHM 5% 1/16W 0603 SMD CAPACITORS C9301 C9316-9317 C9323-9324 03-009-0075-00 CAP CER SMD 0.1uF 50V 20% Y5V 0603 C9306 C9308 C9318-9319...

  • Page 68: Ic Block Diagram

    IC BLOCK DIAGRAM MAINBOARD LM1117 / LM1117S (U2008 in Mainboard, U1020, U1036 in DSP, U4303 in HDMI, U4504, U4505 in Component) AME8530 (U2006) M30280 (U2001)
  • Page 69 ATMEGA48-20 (U2007) AT24C16 (U2002)
  • Page 70 74HC00D (U2009) HEF4094BT (U2003, U4103-4106, U6901 in Mainboard, U1007, U6003 in DSP, U2201 in Keyboard) 74HC132 (U2005)
  • Page 71 NJM4560M (U6501, U6601, U6701, U6801 in Mainboard, U1023, U1027-1031, U6004-6007, U6010, U6018, U6019 in DSP, U5605 in AMP-S, U9301 in F-Input) BA7660FS (U4101-4102 in Mainboard, U4001, U4501, U4511 in Component)
  • Page 72 D707E0001BRFP250 (U1001) PCM1609A (U1034)
  • Page 73 PCM1742KE (U1035) M61545 (U6002)
  • Page 74 74HC157D (U1033) SST39VF800 (U1004)
  • Page 75 K4S641632K (U1003) 74HC251D (U1005)
  • Page 76 74HCU04D (U1018, U1019) SN74LVC245 (U1010, U1022 in DSP, U4518 in Component) TL5001CD (U1011)
  • Page 77 SN74HCT245 (U1009) PCM1802 (U1017)
  • Page 78 TPS3103 (U1021) CS8416 (U1002)
  • Page 79 BU9450 (U1032) R2S15205FP (U6001)
  • Page 80 HDMI CM1213-8 (D4301-4304 in HDMI, D2308 in Trigger) TMDS (U15, U23)
  • Page 81 COMPONENT ATtiny261 (U4520)
  • Page 82 TVP5146PFP (U4507) SAA7128 (U4508)
  • Page 83 74HC4052D (U4002-4003) PCA9517 (U4513)
  • Page 84 SN74AHCT244 (U4517) MC141585DW (U19)
  • Page 85 Power Amp – F AS358 (U5302) LM35DT (U5303)
  • Page 86 Trigger 74HC86D (U2303) ST232BDR (U2301) TPS2011A (U2302)
  • Page 87 EXPLODED VIEW - A...

  • Page 88: Exploded View

    EXPLODED VIEW - B...

  • Page 89: Exploded View Parts List

    EXPLODED VIEW PARTS LIST ITEM PART NO. DESC. 08-002-0067-90 FAN DC 60x20mm 12V 0.18A 3800RPM DF126020SL 3 L=430mm w/ 2.5P CONNECTOR (RoHS) 10-005-0286-90 TRANSFORMER PW EI-114 120V T755 T08789A (RoHS) [FOR 120V VERSION] 10-005-0287-90 TRANSFORMER PW EI-114 230V T755 T08789B (RoHS) [FOR 230V VERSION] 11-001-0062-90 SWITCH ROCKER 1P1T BLK/BLK 10A/250VAC...
  • Page 90 23-232-0024-90 BOTTOM CABINET T755 (RoHS) 23-236-0020-90 TOP COVER T755 (PAINTED PPG GREY) (RoHS) [FOR GRAPHITE VERSION] 23-236-0021-90 TOP COVER T755 (PAINTED NAD SILVER) (RoHS) [FOR TITANIUM VERSION] 23-237-0034-90 REAR PANEL T755 (AH) (RoHS) [FOR 120V VERSION] 23-237-0035-90 REAR PANEL T755 (C) (RoHS)
  • Page 91 25-008-0404-90 FRONT LENS TINT COLOR TXX5 AH (RoHS) [FOR 120V VERSION] 25-008-0405-90 FRONT LENS TINT COLOR TXX5 CE (RoHS) [FOR 230V VERSION] 25-008-0409-90 POWER LED LENS - ROUND #2 MILKY WHITE (RoHS) 25-014-0030-90 RUBBER FOOT I/D14 X O/D26 X 3 PORON HH-48C (RoHS) 25-016-0025-90 FOAM 9 X 240 X 1.5mm BLACK (UL GRADE)
  • Page 92 Enlarged in detail on the next page...

  • Page 93: Single Amplifier Channel Repair Kit

    SINGLE AMPLIFIER CHANNEL REPAIR KIT T755 Power amplifier components (single channel) Components in the red boxes are Part Number Description included in the single amplifier repair kit. 02-005-0063-90 RES WW 0.22 OHM 5% 5W AXIAL (RoHS) 02-007-0314-90 RES SMD 220 OHM 5% 1/2W 2010 TAPE(RoHS) Part number 52-940-0755-90 03-009-0144-90 CAP ELEC SMD 470uF 16V +/-20% 10x10.5 TAPE (RoHS) 03-009-0152-90 SMD E CAP 100uF/16V ±20% LOW IMPEDANCED CASE 6.3 X 5.8 (RoHS)

  • Page 94: Packing Diagram

    24-004-2013-90 T755 OWNER’S MANUAL E/I/P/S W/WEEE 24-004-2227-90 T755 QUICK START MANUAL A3 SIZE (RoHS) 24-004-1936-90 WARRANTY CARD (RoHS) 28-008-0004-92 REMOTE CONTROLLER NAD HTR-3 (RoHS) 24-006-0776-90 POLYFOAM TOP/BOTTOM T755(ROHS) 24-003-0130-90 POLYBAG T762 W/SILKSCREEN MAIN UNIT 24-003-0134-90 PROTECTIVE COVER T755 (RoHS) 24-005-0890-90...
  • Page 95 NAD ELECTRONICS LTD LONDON...

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