NAD T737 Service Manual
  1. Manuals
  2. Brands
  3. NAD Manuals
  4. Stereo Receiver
  5. T737
  6. Service manual

NAD T737 Service Manual

Av surround sound receiver
Hide thumbs Also See for T737:
Table of Contents

Advertisement

Available languages

Available languages

Quick Links

See also: Owner's Manual
T737
AV Surround Sound Receiver

Advertisement

Table of Contents
loading

Related Manuals for NAD T737

Summary of Contents for NAD T737

  • Page 1 T737 AV Surround Sound Receiver...

  • Page 2: Table Of Contents

    SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES..................1-3 SERVICING PRECAUTIONS ........................1-4 * General Servicing Precautions * Insulation checking prodedure * Electrostatically Sensitive Devices SPECIFICATIONS ............................1-5 DISASSEMBLY .............................. 1-6 PRINCIPAL PART LOCATION ........................1-7 EXPLODED VIEW ............................1-8...

  • Page 3: Product Safety Servicing Guidelines

    PRODUCT SAFETY SERVICING GUIDELINES CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN VOLTAGE MEASURE MUST NOT EXCEED 75 VOLTS R.M.S. ANY WAY. NEVER PERFORM CUSTOMIZED INSTALLATIONS THIS CORRESPONDS TO 0.5 MILLIAMP AC ANY VALUE WITHOUT MANUFACTURER’S APPROVAL. UNAUTHORIZED EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL MODIFICATIONS WILL NOT ONLY VOID THE WARRANTY, BUT SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY.

  • Page 4: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION : Before servicing the A/V Receiver covered by this Electrostatically Sensitive (ES) Devices service data and its supplements and addends, read and follow the Some semiconductor (solid state) devices can be damaged easily by SAFETY PRECAUTIONS. NOTE : if unforeseen circumstances static electricity.

  • Page 5: Specifications

    SPECIFICATIONS...

  • Page 6: Disassembly

    DISASSEMBLY 1> REMOVAL OF TOP COVER 2> REMOVAL OF FRONT PANEL...

  • Page 7: Principal Part Location

    PRINCIPAL PARTS LOCATION...
  • Page 8 T737AH EXPLODED VIEW PARTS LIST (Graphite) BUTTON NOTE ** AMP ASSEMBLY #31 & CHASSIS #19 ARE SOLD TOGETHER FASCIA ASSEMBLY #1, #3, & #4 ARE SOLD TOGETHER...
  • Page 9 T737AH EXPLODED VIEW (Graphite) NOTE** NOTE** NOTE** 1-10...
  • Page 10 T737C EXPLODED VIEW PARTS LIST (Graphite) BUTTON NOTE ** AMP ASSEMBLY #31 & CHASSIS #19 ARE SOLD TOGETHER FASCIA ASSEMBLY #1, #3, & #4 ARE SOLD TOGETHER 1-11...
  • Page 11 T737C EXPLODED VIEW (Graphite) NOTE** NOTE** NOTE** 1-12 1-13...
  • Page 12 T737CT EXPLODED VIEW PARTS LIST (Titanium) BUTTON NOTE ** AMP ASSEMBLY #31 & CHASSIS #19 ARE SOLD TOGETHER FASCIA ASSEMBLY #1, #3, & #4 ARE SOLD TOGETHER 1-14...
  • Page 13 T737CT EXPLODED VIEW (Titanium) NOTE** NOTE** NOTE** 1-15 1-16...
  • Page 14 SECTION 2 ELECTRICAL CONTENTS CONTENTS IC BLOCK DIAGRAMS & PIN DESCRIPTION ..................2-2 DIAGRAM..............................2-31 1. BLOCK DIAGRAM ..........................2-28 2. WIRING DIAGRAM ..........................2-34 3. SCHEMATIC DIAGRAM ........................2-36 • FRONT PART ..........................2-36 • POWER PART..........................2-38 • MCU PART..........................

  • Page 15: Ic Block Diagrams & Pin Description

    IC BLOCK DIAGRAMS & PIN DESCRIPTION...
  • Page 17 IC201: T5CC1: Microcontrollers...
  • Page 18 IC PIN DESCRIPTION (IC112: ADV7342: VIDEO ENCODER) 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 SFL/MISO DD_IO PIN 1 TEST0 SET1 TEST1 COMP1 DAC 1 DAC 2 ADV7342/ADV7343 DAC 3 TOP VIEW (Not to Scale) AGND DAC 4...
  • Page 19 Input/ Pin No. Mnemonic Output Description This pin is used to control the amplitudes of the DAC 4, DAC 5, and DAC 6 outputs. A 4.12 kΩ SET2 resistor must be connected from R to AGND. SET2 45, 35 COMP1, Compensation Pins.
  • Page 20 IC240: CS497004: DSP GPIO9, PCP_A1 / A9 SD_A0, EXT_A0 SD_A1, EXT_A1 GPIO8, PCP_A0 / A8 SD_A2, EXT_A2 GPIO7, PCP_AD7 / D7 GND4 GPIO6, PCP_AD6 / D6 SD_A3, EXT_A3 VDDIO7 SD_A4, EXT_A4 GPIO5, PCP_AD5 / D5 VDD4 GPIO4, PCP_AD4 / D4 EXT_CS2# GNDIO7 SD_A5, EXT_A5...

  • Page 21: Diagram

    ADV7403: IC111 VIDEO DECODER Functional Block Diagram Figure 1: Functional Block Diagram...
  • Page 22 ADV7403 Pin Description 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 AIN12 Pin1 AIN5 Identifier AIN11 AIN4 CS/HS AIN10 DGND TEST0 DVDDIO CAPC2 ADV7403 CAPC1 BIAS AGND DGND...
  • Page 23 ADV7403 Pin No. Mnemonic Type Function 72, 74, 76, 53, 55, 57, 71, 73, 75 42, 41, 28, P2–P9, P12– Video pixel output port. 27, 26, 25, 23, 22, 10, 9, 8, 7, 94, 93, 92, 91 44, 43, 21, P0–P1, P10–...

  • Page 24: Absolute Maximum Ratings

    ADV7403 Pin No. Mnemonic Type Function mode the crystal must be a fundamental crystal. ELPF The recommend external loop filter must be connected to this ELPF pin. 70, 59 TEST0 - These pins should be unconnected TEST1 SFL/SYNC_O SFL (Subcarrier Frequency Lock); this pin contains a serial output stream which can be used to lock the subcarrier frequency when this decoder is connected to any Analog Devices digital video encoder.
  • Page 25 LC74763: IC108: OSD IC 2-12...
  • Page 26 IVERS 2-13...
  • Page 27 IVERS 2-13 2-14...
  • Page 28 IC113: NJM2566V: VIDEO AMP 2-15...
  • Page 29 BLOCK DIAGRAM (IC133: NJM2581) VIN1 75 Ω Driver BIAS VEE1 VOUT1 VIN2 75 Ω Driver BIAS VEE2 VOUT2 VIN3 75 Ω Driver BIAS VEE3 VOUT3 PowerSave BLOCK DIAGRAM (IC135: NJM2586A) CH1 OUT CH1 IN1 Driver Bias Cont1 CH1 OUT CH1 IN1 Driver Cont1 Bias...
  • Page 30 BLOCK DIAGRAM (IC101, IC102, IC103: NJM2595: VIDEO SW) Vin1 Vin2 75Ω Vout1 Driver Vin3 75Ω Vout2 Driver Vin4 Vin5 75Ω Vout3 Driver 2-17...
  • Page 31 IC157: ST232CDR: RS-232 DRIVERS & RECEIVERS BLOCK DIAGRAM (IC107: NJM2535) 2-18...
  • Page 32 IC301: R2A15218FP: 8CH ELECTRONIC VOLUME SYSTEM BLOCK DIAGRAM Multi Multi SUBL Rch Tone Lch Tone MUTE CLOCK DATA MCU I/F DGND Lout Tone Volume Bass& Treble Volume Bass& Treble Rout Input Volume Volume Multi SBLout Out L SBLin Volume Volume Multi SBRout SBRin...
  • Page 33 BLOCK DIAGRAM AND PIN CONFIGURATION (TOP VIEW) AVCC MUTE AVCC N.C. AVEE AVEE N.C. TREL 0/-6/-12/-18dB ADCL BASSL2 ADCR BASSL1 N.C. AGND Bass/ Treble 0~-95dB, -14~+14dB +42~0dB MAIN N.C. (2dB step) (0.5dBstep) (0.5dBstep) Bypass Tone INR1 Tone+MIX FROUT Tone INL1 AGND +42~0dB (0.5dBstep)
  • Page 34 PIN DESCRIPTION PIN No. Function Name 23,21, FROUT,FLOUT, 17,15, COUT,SWOUT, Output pin of FL/FR/C/SW/SL/SR/SBL/SBR channel 11,9, SROUT, SLOUT, SBROUT,SBLOUT 24,20, FRC,FLC, 18,14, CC,SWC, Connects capacitor for reducing click noise of 12,8, SRC,SLC, L/R/C/SW/SL/SR/SBL/SBR channel volume SBRC,SBLC 4,7,10,16, Analog ground of internal circuit AGND 19,22,56 TREL, TRER...
  • Page 35 IC141: SII9185ACTU: HDMI SWITCH R1X0- AGND R1X0+ R0XC+ AVCC33 R0XC- R1X1- AVCC18 R1X1+ HPD0 AGND LSCL R1X2- LSDA R1X2+ RESET# SII9185ACTU AVCC18 EXTSWING DSDA1 TXC- DSCL1 TXC+ RPWR1 AGND CEC_D TX0- CEC_A TX0+ AVCC33 AVCC18 HPD2 TX1- AVCC18 TX1+ R2XC- AGND R2XC+ TX2-...

  • Page 36: Block Diagram

    BLOCK DIAGRAM 2-23...
  • Page 37 IC157: ST232CDR: RS-232 DRIVERS & RECEIVERS PlN N° SYMBOL NOTE Positive terminal for the first charge pump capacitor Doubled voltage terminal Negative terminal for the first charge pump capacitor Positive terminal for the second charge pump capacitor Negative terminal for the second charge pump capacitor Inverted voltage terminal Second transmitter output voltage Second receiver input voltage...
  • Page 38 IC147: TC74VCX541FT: OCTAL BUS BUFFER 2-25...
  • Page 39 IC156: M24C32WMN6TP: EEPROM High Voltage Control Logic Generator I/O Shift Register Address Register Data and Counter Register 1 Page X Decoder AI06899 2-26...
  • Page 40 TRANSISTOR, REGULATOR IC BLOCK DIAGRAM 2-27...
  • Page 41 BLOCK DIAGRAM (AUDIO PART) 2-28 2-29...
  • Page 42 BLOCK DIAGRAM (MCU & DSP PART) 2-30 2-31...
  • Page 43 BLOCK DIAGRAM (VIDEO PART) 2-32 2-33...

  • Page 44: Wiring Diagram

    WIRING DIAGRAM POWER CORD POWER #4(HDMI) (MCU) FAN-->AMP #3(VIDEO) 1.25 VIDEO<-->HDMI AMP-->POWER 450mm 1.25 70mm 300mm INPUT-->VIDEO 450mm POWER-->INPUT 350mm #2(INPUT) AMP-->CONNECT TRANSFORMER #1(AMP) 1.25 HEATSINK #1 FAN #2 FAN 300mm 1.25 H/P-->CONNECT 180mm 2.0 pitch 50mm FRONT 2-34 2-35...

  • Page 45: Schematic Diagram

    SCHEMATIC DIAGRAM (FRONT PART) TO POWER TRANS. CN502 VFD PCB CUP12126-1 PHONES & OPTICAL PCB CUP12126-4 JK522 D+5V D+5V R5009 FIP51 CFLHCA16S201T BN507 & CN507 OPT_IN OPT_IN DGND DGND 56 55 MIC_IN R5056 MIC_ON IC522 HVITC74VHCT08FT R5045 Q5051 C2316Y C5231 C5041 R5053 R5231...

  • Page 46: Power Part

    SCHEMATIC DIAGRAM (POWER PART) -12V DAB+8V CUP12126-3 +12V DETECT D5310 D5312 R5708 STBY_MUTE IC537 R5305 D5305 1N4003 1N4003 D5311 D5313 CUP12126-2 0.15 SB2100 STBY_MUTE 1N4003 1N4003 D5304 SB2100 R5315 DETECT +12V D5307 DAB+6.5V 1N4003S -12V D5306 R5304 IN OUT D5710 0.15 1N4003S 1N5819...

  • Page 47: Mcu Part

    SCHEMATIC DIAGRAM (MCU PART) 3-40 3-41...

  • Page 48: Dsp&Codec With Dir Part

    SCHEMATIC DIAGRAM (DSP&CODEC WITH DIR PART) 3-42 3-43...

  • Page 49: Input&Volume Part

    SCHEMATIC DIAGRAM (INPUT&VOLUME PART) XM PART FROM FRONT B'D BN311 JK301 GAIN : 20dB R3003 ANALOG1_L +12V R3321 1W / 68ohm REC OUT1 Q3321 R3323 C3203 ANALOG_OUT R3004 ANALOG1_R R3109 R3110 SW_MUTE2 SBR_OUT C3027 R3001 5.6K 5.6K RECOUT1_L C3104 D3110 FUNC_MUTE2 ANALOG 1 SR_OUT...

  • Page 50: Xm&Tuner Part

    SCHEMATIC DIAGRAM (XM&TUNER PART) XM READY PART +5VX GAIN : 6dB / F.RESPONSE : 44kHz @ -3dB RN343 XM_MCLK MCLK DZFL XM_LRLK C3451 C3453 C3461 R3453 XM_BCLK BICK DZFR 10/50V(U) 3.3K(U) 1000P(U) 10/50V(U) R3459 R3455 22X4(U) 3.3K(U) XM_DATA SDTI C3459 2.2K(U) 100P(U) LRCK...

  • Page 51: Hdmi Sw Part

    SCHEMATIC DIAGRAM (HDMI SW PART) 3.3V_HD VGND VGND VGND VGND Q1204 3.3V_HD L1201 1.8V_HD Q1205 L1202 R1218 VGND VGND R1207 L1203 HP DET VGND VGND R1208 C1252 R1209 R1210 0.1uF 3.3V_HD DDC DATA R1211 DDC CLK VGND VGND R1X0- AGND CE REMOTE R1X0+ R0XC+...

  • Page 52: Video Part

    SCHEMATIC DIAGRAM (VIDEO PART) VIDEO SW PART GAME_Y VIDEO_SW_IN GAME_C VIDEO_IN_OUT * LC74763M OPTION TABLE GAME_CVBS CVBS_OUT C1209 COMPONENT_PR_OUT COMPONENT_PR_OUT GAME_S-VIDEO_Y_IN L1002 S-VIDEO_Y_OUT C701 C702 X701 10/50 COMPONENT_PB_OUT COMPONENT_PB_OUT +5VVA 100uH S-VIDEO_C_OUT COMPONENT_Y_OUT COMPONENT_Y_OUT 17.734 COMPONENT_Y_OUT VGND C1211 COMPOSITE(PIN1) R1169 GAME_S-VIDEO_C_IN R1165 COMPONENT_PB_OUT...
  • Page 53 SCHEMATIC DIAGRAM (VIDEO ENCODER PART) +5VVA IC113 NJM2566V R1129 VGND C1175 R1130 SCIN VGND SDCOUT 0.1uF R1131 SCOUT R1132 C1170 22/6.3V MIXSW CVBS R1133 VOUT C1177 C1178 GND1 10/16V R1134 SYOUT C1179 SYIN C1180 C1171 GND4 CBSW 10/16V 0.1uF R1135 YOUT COMPONENT Y C1181...
  • Page 54 KTA1268GR KTA1268GR R4831 R4832 10/50V R4401 R4405 SR_IN SL_IN 2.7K/1.5K 150/680 R4412 R4827 C4401 VR440 3.3K BSL_IN Q4822 560K T747 T737 L4426 KTA1268GR Q4412 1.5K R4831 2.7K 0.5uH BSR_IN KTD1028B R4403 R4832 R4426 SL_CH R4427 R4407 R4826 -12V 2.2K Q4410...
  • Page 55 SCHEMATIC DIAGRAM (AMP #2 PART) CN498 CN497 CN499 +12V BN490 +12V FAN1 +12V FAN2 FAN3 ST+5.6V ON:85'C ON:75'C H.P_ R R4902 IC484 390/1W Q4944 ST202EBW KTA1272Y R4946 H.P_L C4841 R4901 47/1W 0.1uF 390/1W R4945 R4890 C4842 C4940 JK492 R4959 7.5K 0.1uF 0.1uF Q4934...

  • Page 56: Printed Circuit Boards

    PRINTED CIRCUIT BOARDS FRONT (TOP VIEW) 2-58 2-59...
  • Page 57 FRONT (BOTTOM VIEW) 2-60 2-61...

  • Page 58: Main

    MAIN (TOP VIEW) MAIN (BOTTOM VIEW) 2-62 2-63...

  • Page 59: Input

    INPUT (TOP VIEW) 2-64 2-65...
  • Page 60 INPUT (BOTTOM VIEW) 2-66 2-67...

  • Page 61: Video

    VIDEO (TOP VIEW) VIDEO (BOTTOM VIEW) 2-68 2-69...

  • Page 62: Hdmi

    HDMI (TOP VIEW) HDMI (BOTTOM VIEW) 2-70 2-71...

  • Page 63: Amp

    AMP (TOP VIEW) 2-72 2-73...
  • Page 64 AMP (BOTTOM VIEW) 2-74 2-75...
  • Page 65 2-76...
  • Page 66 2-77...
  • Page 67 2-78...
  • Page 68 2-79...

  • Page 69: Electrical Parts List

    SECTION 3 ELECTRICAL PARTS LIST RESISTORS AND CAPACITORS Notes : * Please use this part number for parts order. * IMPORTANT SAFETY NOTICE. Components identified by mark have special characteristics important for safety. When replacing any of these components, use only manufacture's specified parts. * The unit of resistance is ohm( ) k=1000 , M=1000...
  • Page 75 & DSP...
  • Page 78 3-10...
  • Page 79 3-11...
  • Page 80 3-12...
  • Page 81 3-13...
  • Page 82 3-14...
  • Page 83 3-15...
  • Page 84 3-16...
  • Page 85 3-17...
  • Page 86 3-18...
  • Page 87 3-19...
  • Page 88 3-20...
  • Page 89 3-21...
  • Page 90 3-22...
  • Page 91 3-23...
  • Page 92 3-24...
  • Page 93 3-25...
  • Page 94 3-26...
  • Page 95 3-27...
  • Page 96 3-28...
  • Page 97 3-29...
  • Page 98 3-30...
  • Page 99 3-31...
  • Page 100 3-32...
  • Page 101 3-33...
  • Page 102 3-34...
  • Page 103 3-35...
  • Page 104 3-36...
  • Page 105 3-37...
  • Page 106 3-38...
  • Page 107 3-39...
  • Page 108 3-40...
  • Page 109 3-41...
  • Page 110 3-42...
  • Page 111 3-43...
  • Page 112 3-44...
  • Page 113 IPOD DATA PORT 3-45...
  • Page 114 3-46...

Table of Contents