Nad-T-571-AH-Service-Manual(1) 电路图 维修手册.pdf

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1、NOTES) Warning NOTES) Parts that are shaded are critical NOTES) With respect to risk of fire or NOTES) electricial shock. 470F/2.3V 01. 09. 21 R10581B T571C/T571AH 3-173-18 CIRCUIT DIAGRAM 1. POWER(SMPS) CIRCUIT DIAGRAM NOTE : 1. Shaded( ) parts are critical for safety. Replace only with specified p

2、art number. 2. Voltages are DC-measured with a digital voltmeter during Play mode. Oscillation abnormal Digitron no Power 3.3V line dead. No Power 8V line dead 5V_A/5V_D, No Power No Power RadioFans.CN 收音机爱 好者资料库 3-193-20 5 56 Spindle Servo Loop RF SIGNAL Focus Servo Loop Tracking Servo Loop Sled Se

3、rvo Loop WAVEFORM T571C/T571AH 2. DVD DSP CIRCUIT DIAGRAM DVD/CD picture audio abnormal MPEG Interface Line -com Interface Data -com Interface adress CD/DVD picture audio abnormal Tracking/Focus Servo fail Tracking Servo fail Spindle Motor abnormal CD/DVD picture audio abnormal Focus Servo fail Trac

4、king Servo fail Scratched Disc abnormal Sled Servo fail DRAM Control Disc Detect Error Spindle Servo fail RadioFans.CN 收音机爱 好者资料库 3-213-22 3. DRIVE ied to IC101 Pin 3. Check IC101. Is 5.2V applied to IC102 Pin 1? Is there a DC voltage at the (+) terminal of BD101? Check R127, 128. (SHUTDOWN CKT) 1.

5、Power(SMPS) Circuit No FLD Is 5.2VA section working? Replace SMPS trans(T101). Replace the inferior components. Are D109, L103 open? NO NO NO NO NO NO YES YESYES YESYES YES YES A.B. NO NO 3-3 Replace Main B/D Refer to Front Part Replace IC502 Reconnect it. 2. -COM Circuit A. No Power Does Logo appea

6、r on the screen? Is oscillation of X501 normal? Are IC501 Pins 193, 808 and 81 normal? Do “Hello” appear at FLD? Is P3901 connected normally? Is P3901 Pin 8, 9, 18 normal? The waveform on 3, 5, 7 pin of IC502 normal? Check the oscillation Check short. OK Replace IC501 or IC306. Check power. (Refer t

7、o power) If power is normal OK POWER ON 1 1 YES YESYES YES NO YES YES YES A NO NO NO NO NO NONO YES A 3-4 B. Audio abnormal D. Open/Close abnormal Check the connection of P3901. Check IC301 Pins 93, 94. Check Audio jack. YES (If OK) YES NO NO YES YES (If OK) YES YES (If OK) YES (If OK) YES (If OK) R

8、efer to Audio part. Refer to Decoder part. Refer to PANTERA part. Replace B/D. Check Front. Reconnect it. Refer to SERVO part. Check the connection of MD. AUDIO ABNORMAL OPEN/CLOSE ABNORMAL C. Video abnormal Check Video jack. YES (If OK) YES (If OK) YES (If OK) Refer to Video part. Refer to PANTERA

9、part. Replace B/D. VIDEO ABNORMAL 3-5 E. Picture abnormal Check the disc. If OK YES (If OK) YES (If OK) Refer to Servo part Check DSP Check PANTERA Replace B/D PICTURE ABNORMAL F. Disc Error Check Disc YES (If OK) YES (If OK) Refer to Servo part Replace B/D DISC ERROR 3-6 Power is on Does TOSHIBA Lo

10、go appear on the screen? Does the moving picture of the DVD Disc play on the screen normally? Is PANTERA data signal normal? Is error signal normal? Is PANTERA data signal normal? Is Clock normal? Does the audio sound output from PANTERA decoder? Does the moving picture of the video CD play on the s

11、creen normally? Does the audio sound output normally? END Check power RF CD: A,B, E, F DVD: A,B,C,D, DVD; RF PICK UP IC205 DRAM 16bit 4M IC201 HY25D801C CD / DVD DSP IC501 PANTERA -II/2E IC901 Upd78032 FROM FL DISPLAY KEY Input REMOCON RECEIVER 5MHz X-TAL Pb IC301 XC9572VL CPLD I/O PORT 72 IC304 SDR

12、AM 16/32BIT 64M IC502 93C46 EEPROM IC2M1 KA3032 MOTOR DRIVER IC2A1 TA33P3721 RF ICDATA 00:15 ICADD 0:8 LOADING FOCUS,TRACKING,SLED SPINDLE MIRR,TZC,PI,TE FE,DFECT_IN RFO SCLK,SDATA SCOR,SQCK,SQSO XLAT , E_STI , E_ENB , E_DR RF_XLAT , LDON IC401 PCM1716 DAC XIO1,XIO2 ,XIO10 F_CLK F_OUT PCMCLK SPINDLE

13、_FG MSDATO MDP1 FOK DEFECT DSP_SENSE LOCK E_SOUT ZISENB /XRST DAC_RST 16 : 9 , PAL_SW , AUTO_SW , MIC_ON Y_SEL /A_MUTE /DAC_CS1 /DAC_CS2 V_MUTE DAC_CLK DAC_OUT ADCCLK ACT_MUTE , LOAD_OPEN , LOAD_CLOSE MIRR AD 00 : 19 PSENB FLD /FLD_CS FLD_CLK FLD_OUT /FLD_CS COMM_CLK COMM_OUT CPLD EE_CS , EE_CLK , E

14、E _OUT F_IN IC3F1 FLASH ROM F_IN /MRESET 74573 /FLASH_CS, /RDPWEO LA0 LA1 LA2 LA3 ALE AD 04 : 19 LADD 04:19 MD00:31 MCLK2 CKE MA00:10 MA12,13 /CS0 /RAS /CAS /WE DQM03 REQP SDCLKI , PSYNC DVD1:7 DSP_INT SENSE /DSP_CS LRCK DAC-CS AOUT3 L Composite FILTER Y Pr SW602 Video SW CVBS/Pr/R , C/Pb/, Y/G Y C

15、L/R -VF AC 240V, 60Hz POWER BOARD -VF -24VA +8V +5.2VA +5V_D +5V_A +12VA +3.3V_M AD0:7 LADD45 , LA03 AD 00 : 15 MDP,FDO,TDO,FMO,MON OPEN_SW CLOSE_SW LIMIT_SW CPLD SBADD , 27MHz X-TAL 33.8688 MHz X-TAL +3.3V POWER_CTL /SRST R AMP 3-13 2. Power(SMPS) Block Diagram 5V_D 5V_A -27VA VF+ RECTIFIERLINE FIL

16、TER SWITCHING TR TRANS FEED B. REG(8V) 8V 5.2VA VF- RECTIFIER(FLD) RECTIFIER(9V) RECTIFIER(5.2V) LPF LPF RECTIFIER(14V)LPF 12VA PWR ON/OFF REG(3.3V) REG(3.3V) 3.3V 3.3V,3.3V_M RECTIFIER(3.8V)LPF -12VA 3-14 8 8 SENS, FOK, SLD_FG, MSDAT0, DEFECT,DSP_SENSE IC2M1 KA3017 SpindleMotor,LoadingMotor, Actuat

17、or Driver CD: A,B,C,D / E, F 4 4 4 4 MIRR,TZC 8 8 5 5 3 3 3 3 SQSO, SQCK, SCORSCOR 6 6 XLAT, S_CLK, S_DATA UCOM I/F focus, tracking, loading, sled Spindle M/D PICK UP MCK IC206 DVDSP-3301 CD / DVD DSP DVD SERVO IC2A1 33P3721 RF Signal Processor FDO,TDO,FMO Load open/close(loading control) UCOM I/F D

18、VD: A,B,C,D, FE,TE,PI,SBADD 4 4 DVD/CD RF DRAM 256K x 16bit 16 9 ICADDR0:8 ICDATA00:15 DO0:7 AO0:5 DVD_DATA0:7 MON,MDP SPINDLE_FG MPEG I/F 2 2 DSP_CS, /WR, /RD3 3 8 8 3. RF/CD DSP/DVD DSP/DVD SERVO Block Diagram 3-15 4. Audio Block Diagram IC401 PCM1716 Audio DAC IC402 LPF & Buffer NJM4580D OP AMP U

19、-COM I/F A_0WT3 /SRST DAC COMM_DATA COMM_CLK DAC_CS LRCK DA_BCK DA_XCK L R L R MPEG I/F 3-16 5. MPEG Block Diagram IC501 PANTERA-2 IC301 XC9572VL CPLD I/O PORT 72 IC304 SDRAM 16/32BIT 64M IC502 93C46 EEPROM IC3F1 FLASH MEMORY IC302/IC303 LATCH AD0:78 DSP I/F DVD0:7 8 LA0:3 4 SCLK,SDATA SQCK,SQS0 REQ

20、P SDCLK1,PSYNC DSP_INT SENSE /DSP_CS AD00:19 RF & MOTOR I/F MIRR LDON SCLK,SDATA EE_CS F_IN 32 MD00:31 MCLK2 CKE MA00:10 MA12,13 /CS0 /RAS/ /CAS /WE /DQM0:3 SPINDLE_FG ALE AD04:19 16 LADD04:19 16 LA0:3 4 AD00:15 16 AUDIO I/F DA_DATA DA_BCK,DA_LRCK,DA_XCK DAC_L0,DAC_L1 DAC_RST A/V JACK I/F C/R(B) CVBS/G(R) Y/B(G) CVBS V_MUTE,16:9 ZISENB /RD /PWED SERVICE MANUAL SERVICE MANUAL T571C T571AH DVD VIDEO PLAYER T571C T571AH DVD VIDEO PLAYER T571C T571AH DVD VIDEO PLAYER MODELS : T571C/T571AHSERVICE MANUAL NAD 2001 NAD ELECTRONICS INTERNATIONAL TORONTO