NAD C715 Service Manual
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NAD C715 Service Manual

For orignal dab module up to s/n a86c71512400
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See also: Owner's Manual
Draft: March 2010
For Orignal DAB Module up to S/N A86C71512400

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Summary of Contents for NAD C715

  • Page 1 Draft: March 2010 For Orignal DAB Module up to S/N A86C71512400...
  • Page 3 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 (C715) AMPLIFIER SECTION Power output Stereo Mode 25W (6 ohms within rated distortion, 1kHz) IHF dynamic power (6 ohms) Total harmonic distortion at rated power 0.15% Damping factor (6 ohms) >102 Input sensitivity and impedance (Tape IN) 370mV/27kΩ Frequency response +1 dB/-3dB (Ref.
  • Page 6 SPECIFICATIONS (C715 DAB) AMPLIFIER SECTION Power output Stereo Mode 25W (6 ohms within rated distortion, 1kHz) IHF dynamic power (6 ohms) Total harmonic distortion at rated power 0.15% Damping factor (6 ohms) >102 Input sensitivity and impedance (Tape IN) 370mV/27kΩ...
  • Page 7 DISASSEMBLY REMOVAL OF TOP COVER REMOVAL OF FRONT PANEL...
  • Page 8 PRINCIPAL PARTS LOCATION C715DABC DAB Module up to S/N A86C71512400 CJDKSL2130CCMZ C715AH & C715C CJDKSL2130CCMZ...
  • Page 9 C715AH EXPLODED VIEW (120V North American version) C D Mechansim S ony** **Chart B C715 change LIST Classification C715C, C715AH, C715DABC CD Mechanism change 2008.10 Start Time of application POWER PCB POWER PCB ASS'Y DAB MODULE Rear Panel Washer CJDWSL11VF S anyo...
  • Page 10 C715C EXPLODED VIEW (230V European version without DAB receiver) C D Mechanism S ony** **Chart B C715 change LIST Classification C715C, C715AH, C715DABC CD Mechanism change 2008.10 Start Time of application POWER PCB POWER PCB ASS'Y DAB MODULE Rear Panel...
  • Page 11 CJDWSL11VF S anyo NAD_c715_2007_10_13-01.hex / NAD "C515/C715 FIRMWARE LOADER" Program NAD_c715_2008_10-02.hex It is possible to use "C515/C715 Change both mechanism and program simultaneously. FIRMWARE LOADER" with the old The new Sanyo mechanism will not work with a servo DAB 1.0 MODULE which has original Sony firmware installed.
  • Page 13 IC BLOCK DIAGRAMS & PIN DESCRIPTION 74HC4066D Quad bilateral switche handbook, halfpage handbook, halfpage V CC V CC MGR257 MGR258 Fig.5 Functional diagram. Fig.6 Schematic diagram (one switch). 74VHC08TTR PIN CONNECTION AND IEC LOGIC SYMBOLS...
  • Page 14 AK4554...
  • Page 15 ST92F124V ST92F124V1: Architectural Block Diagram FLASH Ext. MEM. 128 Kbytes A[7:0] ADDRESS D[7:0] DATA Port0 3 TM 1 Kbyte Ext. MEM. A[10:8] ADDRESS A[21:11] Ports 4 Kbytes P0[7:0] P1[7:3] P1[2:0] Fully 256 bytes WAIT P2[7:0] Prog. Register File P3[7:4] I/Os P3[3:1] 8/16 bits P4[7:4]...
  • Page 16 ST92F124V1: Pin Configuration (Top-view TQFP100) 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 A20/P9.6 P8.4/AIN4 A21/P9.7 P8.3/AIN3 WAIT/WKUP5/P5.0 P8.2/AIN2 WKUP6/WDOUT/P5.1 P8.1/AIN1/WKUP15 SIN/WKUP2/P5.2 P8.0/AIN0/WKUP14 WDIN/SOUT/P5.3 TXCLK/CLKOUT/P5.4 P6.5/WKUP10/INTCLK...
  • Page 17 NAD C715_MCU_Port Table Date : 2007/12/22 Port Name Name Note A20/P9.6 VFD-CE VFD chip enable pin A21/P9.7 WAIT/WKUP5/P5.0 DAB-DI DAB data in WKUP6/WDOUT/P5.1 I/O DAB-CLK DAB clock SIN/WKUP2/P5.2 I/O DAB-DO DAB data out/update port WDIN/SOUT/P5.3 DAB-ON update port TXCLK/CLKOUT/P5.4 update port RXCLK/WKUP7/P5.5...
  • Page 18 73 P8.2/AIN2 74 P8.3/AIN3 JOG1 Volume encoder in + 75 P8.4/AIN4 JOG2 Volume encoder in - 76 P8.5/AIN5 77 P8.6/AIN6 78 P8.7/AIN7 79 AVDD 80 AVSS 81 P7.0/AIN8/CK_AF POWER-H Power on pin, active "H" 82 P7.1/AIN9 P/F-DATA Tuner and function i.c serial data 83 P7.2/AIN10 P/F-CLK Tuner and function i.c serial clock...
  • Page 19 FS2020 (Venice) HW Spec 1.2 Keypad External /Rotary DAC or encode CODEC Band III SDRAM (optional) FS1010 (Chorus) 384KB Audio Serial Flash S/PDIF Serial I/face & RDI I/Faces I/faces Figure 1 - Venice module block diagram (functions in white are on board, in grey are external) The pin-out for CN1 is as follows: Description Description...
  • Page 20 HY57V161610ET PIN CONFIGURATION DQ15 DQ15 DQ14 DQ14 VSSQ VSSQ DQ13 DQ13 DQ12 DQ12 VDDQ VDDQ DQ11 DQ11 DQ10 DQ10 VSSQ VSSQ VDDQ VDDQ 50pin TSOP II 50pin TSOP II VDDQ VDDQ 400mil x 825mil 400mil x 825mil LDQM LDQM 0.8mm pin pitch 0.8mm pin pitch UDQM UDQM...
  • Page 21 FUNCTIONAL BLOCK DIAGRAM 1Mx16 Synchronous DRAM Self Refresh Counter Refresh Refresh Interval Timer Counter 512Kx16 Bank 0 Address[0:10] Sense AMP & I/O gates Column Decoder Address Precharge Register Row Active BA(A11) Column Addr. Column Active Latch & Counter Overflow Burst Length Counter DQ10 DQ11...
  • Page 22 ISL 1208 Block Diagram Seconds BUFFER INTERFACE Minutes CONTROL BUFFER LOGIC Hours Day of Week CRYSTAL Date OSCILLATOR DIVIDER Month Year FREQUENCY ALARM CONTROL REGISTERS TRIP USER SWITCH SRAM IRQ/ INTERNAL SUPPLY Pin Descriptions NUMBER SYMBOL DESCRIPTION The X1 pin is the input of an inverting amplifier and is intended to be connected to one pin of an external 32.768kHz quartz crystal.
  • Page 23 LC72723M Pin Assignment (DIP16/MFP16) Block Diagram 2-12...
  • Page 24 Pin Descriptions Pin No. Function Pin circuit type VREF Reference voltage output (Vdda/2) Output MPXIN Base band (multiplex) signal input Input FLOUT Subcarrier output (filter output) Output Subcarrier input (comparator input) Input Vdda Analog system power supply (+5 V) — —...
  • Page 25 M29W400D Logic Diagram Logic Diagram TSOP Connections V CC BYTE V SS DQ15A–1 A0-A17 DQ0-DQ14 DQ14 DQ15A–1 DQ13 M29W400DT BYTE M29W400DB DQ12 V CC M29W400DT M29W400DB DQ11 DQ10 V SS AI06853 Signal Names Signal Names A0-A17 Address Inputs V SS DQ0-DQ7 Data Inputs/Outputs DQ8-DQ14...
  • Page 26 TA2125AF Driver RIN FIN STB IN3 IN4 REG OUT N.C. Control STBY STBY Logic Iref N.C. N.C. N.C. N.C. VCIN IN1 2-15...
  • Page 27 Terminal Explanation Symbol Function OUT5A Output terminal H-bridge Supply voltage terminal for Logic H-bridge OUT5B Output terminal H-bridge Input reference voltage 4ch BTL Input for ch1 4ch BTL ¾ N.C. Open ¾ N.C. Open ¾ N.C. 8, 9, 10, 27, 28, 29 are connected to PW GND (FIN) ¾...
  • Page 28 TC94A54MFG 1. Pin Configuration and Block Diagram CLOCK DVSS3 GEN. 10-bit 5-bit SAR ADC R-2R DAC SUBCODE DEMODULA DVDD3 TION 1-bit ANA. CIRCUIT FPI1 FPI2 DVSS3 FNI1 VSS3 SERVO FNI2 CONTROL VDD3 RVSS3 VDDM VSS15 DIGITAL EQ AUTO ADJ. BUS0 RVDD3 RF Block BUS1...
  • Page 29 3. Pin Functions Note: 3AI/F : 3 V circuit analog input/output pin 3I/F : 3 V circuit digital input/output pin 1.5AI/F : 1.5 V circuit analog input/output pin Pin name Description Remark Input pin for the RF ripple zero-cross To be connected to the RFZI 3AI/F signal.
  • Page 30 Pin name Description Remark Pin for outputting the playback frame sync 7.35kHz signal. (At this pin, flags in the SFSY (Emphasis flag output pin. DSP and PLL-circuit clock (EMPH) ENPH on: "H". EMPH off: "L". can be monitored, using (LOCK) 3I/F The output polarity can be switched, using a microcontroller commands.
  • Page 31 Pin name Description Remark BUS0 3I/F To be fixed at "H" or "L" BUS1 Data input/output pin for the microcontroller 3I/F when communication is interface. not in progress, so that the BUS2 pin will not become HiZ. 3I/F BUS3 3I/F Clock input pin for the microcontroller BUCK To be fixed at "H"...
  • Page 32 Pin name Description Remark Digital-out output pin. Digital data for up to DOUT double speed can be output when a As per CP-1201 3I/F frequency of 16.9344 MHz is used. Audio data output pin. Which bit is first AOUT (MSB first or LSB first) can be selected, —...
  • Page 33 Pin name Description Remark 3.3 V grounding pin dedicated to the PLL PVSS3 — — circuit. A capacitor to be EFM slice level output pin. connected is selected SLCO For both analog and digital slice modes, 3AI/F according to the servo the output impedance # 2.5 k:.
  • Page 34 Pin name Description Remark Main beam input pin. FNI2 — 3AI/F Connected to PIN diode C. Main beam input pin. — FNI1 3AI/F Connected to PIN diode A. Main beam input pin. FPI2 — 3AI/F Connected to PIN diode D. Main beam input pin.
  • Page 35 TC9163 2-24...
  • Page 36 2-25...
  • Page 37 2-26...
  • Page 38 TCC760 Block Diagram USB_DP / GPIO_B[26], USB_DN / GPIO_B[27] USBH_DP / GPIO_B[28], USBH_DN / GPIO_B[29] XIN, XOUT USB1.1 PLL & Boot ROM XTIN, XTOUT CLK Generator Host / Device XFILT (4KB) TCO2 / GPIO_A[11] TCO5 / GPIO_A[8] Timers / TCO1 / GPIO_A[7] Counters TCO4 / GPIO_A[4] SRAM...
  • Page 39 Pin Description The status of the following GPIO pins are latched at the rising edge of nRESET and used to determine the system bus width and boot mode. External devices must not drive output levels onto these pins during reset period. Pin Name State during reset State after reset...
  • Page 40 Signal Name Shared Signal Pin # Type Description – TCC760 XD[3:0] 128:125 External Bus Chip Select [3:0] / NAND Flash Output Enable NCS[3:0] ND_nOE[3:0] / GPIO_B[5:2] 50:47 [3:0] / GPIO_B[5:2] ND_nWE GPIO_B[7] NAND flash WE. Active low. / GPIO_B[7] Static Memory Write Enable signal. Active low. Static Memory Output Enable signal.
  • Page 41 Signal Name Shared Signal Pin # Type Description – TCC760 GPIO_A[0] / General purpose serial I/O 0 Serial Data Output GPIO_A[0] SDO0 / FGPIO[0] FGPIO[0] GPIO_B[29:28] USBH_DN, USBH_DP 54:53 GPIO_B[29:28] / USBH_DN, USBH_DP GPIO_B[27:26] USB_DN, USB_DP 52:51 GPIO_B[27:26] / USB_DN, USB_DP GPIO_B[25] GPIO_B[25:21] / Boot Mode bits 2 ~ 0 / I2S Interface Signals.
  • Page 42 Signal Name Shared Signal Pin # Type Description – TCC760 VDD_USB Power for USB I/O (3.3V) VDD_OSC Digital Power for Oscillators (1.8V) VDDI Digital Power for Internal Core (1.8V) VDDI_ADC Digital Power for ADC (1.8V) VDDA_ADC Analog Power for ADC (3.3V) VDDA_PLL Analog &...
  • Page 43 TDA 7292 Typical Application Circuit in Split Supply 1000μF 1μF MUTE/ ST-BY IN (L) OUT (L) 1μF 4.7Ω RL (L) IN- (L) 100nF 560Ω μP 560Ω IN- (R) 1μF OUT (R) IN (R) 4.7Ω RL (R) 100nF 1000μF D94AU085 April 2005 This is preliminary information on a new product now in development.
  • Page 44 TDA 7313 PIN CONNECTION (Top view) 2-33...
  • Page 45 BLOCK DIAGRAM 2-34...

  • Page 46: Electrical Troubleshooting Guide

    ELECTRICAL TROUBLESHOOTING GUIDE    R HU KH N  IXVH KH N  IXVH V  SSOLH  SLQ KH N WKH URQW V  SSOLH KH N WKH URQW LU XLW Q  SSOLH SR HU RQ LU XLW  SLQ  SLQ KH N ...
  • Page 47    QVHUW HPRU LQ WKH L RQ SSH U RQ WKH SSOLH WR KH N V  SSOLH KH N  UHVHW LU XLW    KH N  Q LQWHUI H XWR V Q SSH U RQ WKH SSH U RQ WKH V   SSOLH WR...
  • Page 48    DESCRIPTION: CD tray may not open or close. REASON: The tray sense switch can grow tiny conductive "whiskers" across the contact pads shorting the switch and preventing the tray from opening/closing. SOLUTION: Change the value of R101 and R102 from 18K to 470 ohm to increase the current flow across each contact switch pads eliminating the “WHISKERS”.
  • Page 49    R  SLQ  KH N   KH N  RU HU RQ HSO H SL NXS HQ XS R Q KH N  SLQ  VLJQ O KH N  SLQ  XW  VLJQ O KH N QRW QRUP O RQQH WH...
  • Page 50 1. BLOCK DIAGRAM 2-39 2-40...
  • Page 51 2. WIRING DIAGRAM 2-41 2-42...
  • Page 52 3. SCHEMATIC DIAGRAM MAIN PART 2-43 2-44...
  • Page 53 POWER & POWER AMP & KEYBOARD PART 2-45 2-46...
  • Page 54 4. PRINTED CIRCUIT BOARDS MAIN PCB DATA VIEW (TOP) 2-47 2-48...
  • Page 55 MAIN PCB DATA VIEW (BOTTOM) 2-49 2-50...
  • Page 56 POWER PCB DATA VIEW 2-51 2-52...

  • Page 57: Electrical Parts List

    SECTION 3 ELECTRICAL PARTS LIST MAIN PCB ASS'Y ( DABC : COP12018B, C : COP12018C, AH : COP12018D ) CUP12018Z PCB , MAIN C715(291X216, FR-4, 2 ARRAY) DESCRIPTION REF NO. PART NO. REMARKS CUP12018Z MAIN BOARD C101 CCUS1H103KC CAP , CHIP 0.01UF 50V K...
  • Page 58 C437 CCUS1H104KC CAP , CHIP 0.1UF 50V K C438 CCUS1H104KC CAP , CHIP 0.1UF 50V K C439 CCUS1H104KC CAP , CHIP 0.1UF 50V K C451 CCUS1H102KC CAP , CHIP 1000PF 50V K C452 CCUS1H102KC CAP , CHIP 1000PF 50V K C454 CCUS1H103KC CAP , CHIP...
  • Page 59 D501 CVD1SS355T DIODE , CHIP D502 CVD1SS355T DIODE , CHIP D901 HVDUDZS27BSR DIODE , ZENER 27V, 1712 TYPE D902 HVDUDZS9.1BSR DIODE , ZENER 9.1V, 1712 TYPE D905 HVDUDZS4.3BSR DIODE , ZENER 4.3V, 1712 TYPE D906 CVD1SS355T DIODE , CHIP IC11 HVITC94A54MFG01 I.C , DIGITAL SERVO IC12...
  • Page 60 R145 CRJ10DJ223T RES , CHIP 1608 SIZE R146 CRJ10DJ0R0T RES , CHIP 1608 SIZE R148 CRJ10DJ100T RES , CHIP 1608 SIZE R149 CRJ10DJ100T RES , CHIP 1608 SIZE R401 CRJ10DJ562T RES , CHIP 1608 SIZE R402 CRJ10DJ562T RES , CHIP 1608 SIZE R403 CRJ10DJ102T...
  • Page 61 R520 CRJ10DJ473T RES , CHIP 1608 SIZE R521 CRJ10DJ102T RES , CHIP 1608 SIZE R522 CRJ10DJ101T RES , CHIP 1608 SIZE R523 CRJ10DJ123T RES , CHIP 1608 SIZE R524 CRJ10DJ103T RES , CHIP 1608 SIZE R525 CRJ10DJ153T RES , CHIP 1608 SIZE R526 CRJ10DJ104T...
  • Page 62 CCEA1HH100T CAP , ELECT 10UF 50V C713 CCEA1HH4R7T CAP , ELECT 4.7UF 50V C714 CCEA1HH4R7T CAP , ELECT 4.7UF 50V C715 CCEA1HH4R7T CAP , ELECT 4.7UF 50V C716 CCEA1HH4R7T CAP , ELECT 4.7UF 50V C719 CCEA1HH2R2T CAP , ELECT 2.2UF 50V...
  • Page 63 Q902 HVTKSC2316YT KSC2316Y CN11 CJP05GA19ZY WAFER , STRAIGHT CN12 CJP06GA19ZY WAFER , STRAIGHT CN13 CJP16GA117ZY WAFER CN21 CJP13GA117ZY WAFER , CARD CABLE CN31 CJP05GA19ZY WAFER , STRAIGHT CN41 CJP05GA19ZY WAFER , STRAIGHT CN42 CJP07GA19ZY WAFER , STRAIGHT CN51 CJP03GA19ZY WAFER , STRAIGHT CN61 CJP03GA19ZY WAFER , STRAIGHT...
  • Page 64 POWER PCB ASS'Y ( DABC : COP12019B, C : COP12019C, AH : COP12019D ) CUP12019Z PCB , POWER C715(240X251, FR-1) REF NO. PART NO. DESCRIPTION REMARKS CUP12018-1 USB BOARD BN83 CWZC715BN83 SHIEL WIRE ASS'Y(5P, 250MM) C821 HCBS1H104ZFT CAP , CERAMIC 0.1UF 50V Z...
  • Page 65 DESCRIPTION REF NO. PART NO. REMARKS CUP12018-4 SPEAKER BOARD BN31 CWB2B005050EN WIRE ASS'Y BN62 CWB1C005200BM WIRE ASS'Y(5P, 200MM) C303 HCQI1H682JZT CAP , MYLAR 6800PF 50V J C304 HCQI1H682JZT CAP , MYLAR 6800PF 50V J C305 HCBS1H104ZFT CAP , CERAMIC 0.1UF 50V Z C306 HCBS1H104ZFT CAP , CERAMIC...
  • Page 66 D213 CVD1N4003SRT DIODE , RECT 1N4003 D214 CVD1N4003ST DIODE , RECT 1N4003 D215 CVD1N4003ST DIODE , RECT 1N4003 D216 CVD1N4003ST DIODE , RECT 1N4003 D217 CVD1N4003ST DIODE , RECT 1N4003 ET91 CNE75 PLATE , EARTH F751 KBA2C2000TLEZ FUSE T 2A L 250V C715DABC, C715C F751 KBA2C3000TLUZ...
  • Page 67 Service Hint Product: C715 Hardware Technical Bulletin: C715-H2009-01 Date: APRIL 1 2009 Subject: TRAY FUNCTIONALITY This condition only affects a small number of units produced with Note: this batch of leaf switches DESCRIPTION CD tray may not open or close.

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