Loewe Xemix 63510 Service Manual
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Loewe Xemix 63510 Service Manual

Loewe Xemix 63510 Service Manual

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CONTENTS
SECTION 1 . . . . SUMMARY
SECTION 2 . . . . CABINET & MAIN CHASSIS
SECTION 3 . . . . ELECTRICAL
SECTION 4 . . . . PARTS LIST

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Summary of Contents for Loewe Xemix 63510

  • Page 1 CONTENTS SECTION 1 ..SUMMARY SECTION 2 ..CABINET & MAIN CHASSIS SECTION 3 ..ELECTRICAL SECTION 4 ..PARTS LIST...
  • Page 2 SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS ..... 1-3 SERVICING PRECAUTIONS ....................1-4 • General Servicing Precautions • Insulation Checking Prodedure • Electrostatically Sensitive Devices SPECIFICATIONS ........................1-5...
  • Page 3 PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY, SUBJECT : X-RADIATION NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFAC- 1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PER- TURER’S APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY SONNEL COVER THE SUBJECT OF X-RADIATION.

  • Page 4: Servicing Precautions

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

  • Page 5: Specifications

    SPECIFICATIONS • GENERAL Power requirements AC 110~240V, 50/60Hz Power consumption Dimensions(approx.) 360 x 69 x 215mm (W/h/d) Mass(approx.) 2.52kg Operating temperature 5˚C to 35˚C (41˚F to 95˚F) Operating humidity 5% to 90% • SYSTEM Laser Semiconductor laser, wavelength 650nm Signal system PAL/NTSC Frequency response DVD (PCM 96kHz): 8Hz to 44kHz...
  • Page 6 4. FRONT CIRCUIT DIAGRAM System not operate or Dihitron abnormal or Key not operate System not operate Remocon not operate Digital abnormal Power LED abnormal 3-35 3-36...

  • Page 7: System Circuit Diagram

    2. SYSTEM CIRCUIT DIAGRAM No Power on Video signal not appeared System not working or screen is abnormal System not working or Digitron not display Program download fail Digitron all not display 2.5 doesn't appear System not working System not working Video signal Y Video signal Color 3-31...

  • Page 8: Circuit Diagrams

    MODIFIED OR ALTERED WITHOUT PERMISSION IMPLEMENTATION OF THE LATEST SAFETY AND during Play mode. FROM THE LOEWE CORPORATION. ALL COMPO- PERFORMANCE IMPROVEMENT CHANGES INTO NENTS SHOULD BE REPLACED ONLY WITH TYPES THE SET IS NOT DELAYED UNTIL THE NEW SERVICE IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT.
  • Page 9 3. RF & SERVO CIRCUIT DIAGRAM CD/DVD LD will not on 3-33 3-34...
  • Page 10 SECTION 2 CABINET & MAIN CHASSIS CONTENTS 1. EXPLODED VIEWS ........................2-2 1. Cabinet and Main Frame Section ...................2-2 2. Deck Mechanism Section......................2-3 3. Packing Accessory Section ....................2-4...

  • Page 11: Exploded Views

    EXPLODED VIEWS 1. Cabinet and Main Frame Section OPTIONAL PART...

  • Page 12: Deck Mechanism Section

    2. Deck Mechanism Section 022A 024A 024A 024B 015B 011A 015A 015C...

  • Page 13: Packing Accessory Section

    3. Packing Accessory Section CABLE, COAXIL 810 CABLE ASS’Y (RF) PLUG ASS’Y 1WAY(YELLOW) PLUG ASS’Y 2WAY PLUG ASS’Y 1WAY(BLACK) BATTERY 821 SCART CABLE REMOCON OWNER’S MANUAL PACKING SHEET PACKING PACKING BOX CARTON OPTIONAL PARTS...
  • Page 14 5. AUDIO CIRCUIT DIAGRAM 2CH Audio out bad 2CH Audio out bad 2CH AUDIO 3-37 3-38...
  • Page 15 3. KEY P.C.BOARD (LEFT) 4. KEY P.C.BOARD (RIGHT) LOCATION GUIDE (Solder Side) (Solder Side) 3-49 3-50...
  • Page 16 2. I/O P.C.BOARD LOCATION GUIDE 3-47 3-48...
  • Page 17 PRINTED CIRCUIT DIAGRAMS 1. MAIN P.C.BOARD LOCATION GUIDE 3-45 3-46...
  • Page 18 6. JACK CIRCUIT DIAGRAM All Video signal isn't appear or bad Video Signal Y Video Signal CVBS Video Signal Color 2CH AUDIO 3-39 3-40...

  • Page 19: Electrical Section

    SECTION 3 ELECTRICAL CONTENTS ELECTRICAL TROUBLESHOOTING GUIDE ..............3-2 1. Power check flow........................3-2 2. System operation flow ......................3-3 3. Test & debug flow ........................3-4 DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING ....3-10 1. SYSTEM 27MHz CLOCK,RESET,FLASH R/W SIGNAL ............3-10 2. SDRAM CLOCK ........................3-12 3.

  • Page 20: Electrical Troubleshooting Guide

    ELECTRICAL TROUBLESHOOTING GUIDE 1. Power check flow No VF+ No 5V_A . Is 5.2VA section working? Is 5.2VA section working? Is 5.2V present at emitter Check F102 No 5.2VA. of Q107? Replace D109. Check F101 Replace Q107. Is there a DC voltage at Replace R101.

  • Page 21: System Operation Flow

    2. System operation flow Power On 1. 8032 initializes SERVO, DSP & RISC registers 2. Write RISC code to SDRAM 3. Reset RISC Show LOGO Tray Closed? Tray Close to Closed position SLED at Inner Side? SLED Moves to Inner Position 1.
  • Page 22 3. Test & debug flow TEST Check the AC Vol tage Check the POWER PART Power PART (110V or 220V) the DC Vol tage outputs OK? Check the POWER PART (5V, 3.3V, 8V, 12V) Make sure the main PCBA don't Is 3.3V and 2.5V DC Check the regulators or diode(D501).
  • Page 23 RESET or Power On. Flash Check connecti on lines between FLASH Memory operates Show LOGO? & MT1379 and the FLASH access time properly? whether is sui table or not. Check connection lines between SDRAM SDRAM(IC502,IC503) & MT1379 and the works properl y? SDRAM is damaged.
  • Page 24 Does the SLED move Check the connection line of Motor Driver STBY to inner side when it is at STBY signal . Pin is High? outter positi on? Check the rel ated circuit of Motor Driver STBY FMSO. Pin is High? Check the amp circuit on SL+ and SL- output motor driver.
  • Page 25 Check the laser power circuit Laser turns on when LD01 or LD02 output on MT1336 and connecting to reading disc? properly? power transistor. (Q204, Q205) Collector Check therel ated ci rcuit on voltage of power laser power transi stor transistor is OK? ( Q204, Q205) Check cable connection between transistor couput and pick-up head.
  • Page 26 Proper Check connections between signals on A, B, C, Focus ON OK? MT1336 and pick-up head. D of MT1336 Check the related circuit Proper FEO signal on MT1336 FEO sugnal . on MT1336? Check FEO connection between MT1336 and MT1379 Check the related Proper FEO signal Track On OK?
  • Page 27 Audio Normal DAC received Check connection between MT1379 Audio output & Audio DAC. (Check VRST#, ACLK, correct data stream? when disc playback? ABCK, ASDAT3) Normal Check the related circuit of Audio DAC Audio DAC. (Check Audio out? (IC601) out Pin 14, 15,18,19) Check Audio filter, amplify, mute circuit.

  • Page 28: Details And Waveforms On System Test And Debugging

    DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 1. SYSTEM 27MHz CLOCK,RESET,FLASH R/W SIGNAL 1) MT1379 main clock is at 27MHz(X501) 3.8V, 27MHz FIG 1-1 2) MT1379 & MT1336 reset is high active. Power Cord in 5.2VA PWR_CTL(P5901 PIN 17) M_RESET(P5901 PIN 19) URST(IC501 PIN 188) FIG 1-2...
  • Page 29 3) RS232 waveform during procedure(Downloading) TXD(J6 PIN3) RXD(J6 PIN 2) FIG 1-3 4) Flash R/W enable signal during download(Downloading) FRD(IC5A1 PIN 28) FWR(IC5A1 PIN 11) FIG 1-4 3-11...
  • Page 30 2. SDRAM CLOCK 1) MT1379 main clock is at 27MHz(X501) DCLK = 93MHz, Vp-p=2.2, Vmax=2.7V (IC502,IC503 PIN 35) FIG 2-1 3. TRAY OPEN/CLOSE SIGNAL 1) Tray open/close waveform OPEN((CN203 PIN 3) CLOSE(CN203 PIN 2) TROPEN(IC202 PIN 1) TRCLOSE(IC202 PIN 2) FIG 3-1 3-12...
  • Page 31 2) Tray close waveform OPEN((CN203 PIN 3) CLOSE(CN203 PIN 2) TROPEN(IC202 PIN 1) TRCLOSE(IC202 PIN 2) FIG 3-2 3) Tray open waveform OPEN((CN203 PIN 3) CLOSE(CN203 PIN 2) TROPEN(IC202 PIN 1) TRCLOSE(IC202 PIN 2) FIG 3-3 3-13...
  • Page 32 4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION) FMSO(2.0V/1.4V/1.0V) (IC501 PIN 19) STBY(5V) – (IC201 PIN 50) SL+(4.7V/3.6V/1.9V) (IC202 PIN 12) SL-(5.3V/3.7V/2.5V) (IC202 PIN 13) FIG 4-1 5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION) FOSO(1.5V/1.4V/1.3V) (IC501 PIN 12) F+(4.0V/3.6V/3.2V) (IC202 PIN 9) F-(4.0V/3.6V/3.2V) (IC202 PIN 8) FIG 5-1...
  • Page 33 6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION) MDI1(0V/180mV) (IC201 PIN 124) LD01(5.0V//3.5V) IC201 PIN 125) LD02(5.0V/3.6V) (IC201 PIN 126) FIG 6-1 7. DISC TYPE JUDGEMENT WAVEFORM F+(IC202 PIN 9) FE(IC201 PIN 18) RFL(IC201 PIN 19) FIG 7-1 (DVD) 3-15...
  • Page 34 F+(IC202 PIN 9) FE(IC201 PIN 18) RFL(IC201 PIN 19) FIG 7-2 (DVD) F+(IC202 PIN 9) FE(IC201 PIN 18) RFL(IC201 PIN 19) FIG 7-3 (CD) 3-16...

  • Page 35: Focus On Waveform

    F+(IC202 PIN 9) FE(IC201 PIN 18) RFL(IC201 PIN 19) FIG 7-4 (CD) 8. FOCUS ON WAVEFORM FE(IC201 PIN 18) FOSO(IC501 PIN12) F+(IC202 PIN 9) F-(IC202 PIN 8) FIG 8-1 (DVD) 3-17...
  • Page 36 FE(IC201 PIN 18) FOSO(IC501 PIN12) F+(IC202 PIN 9) F-(IC202 PIN 8) FIG 8-2 (CD) 9. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION) DMSO(1.4V/1.8V) (IC501 PIN 18) SP-(3.6V/2.4V) (IC202 PIN 10) SP+(3.6V/4.8V) (IC202 PIN 11) FIG 9-1 3-18...
  • Page 37 10. TRACKING CONTROL RELATED SIGNAL(System checking) TE(IC201 PIN 21) TRSO(IC501 PIN 13) T-(IC202 PIN 7) T+(IC202 PIN 6) FIG 10-1(DVD) TE(IC201 PIN 21) TRSO(IC501 PIN 13) T-(IC202 PIN 7) T+(IC202 PIN 6) FIG 10-2(CD) 3-19...
  • Page 38 11. RF WAVEFORM RFOP(2.3V/1.1V) (IC201 PIN 6) RFON(0.8V/2.0V) (IC201 PIN 7) FIG 11-1 12. MT1379 AUDIO OPTICAL AND COAXIAL OUTPUT (ASPDIF) (IC501 PIN 153) FIG 12-1 3-20...
  • Page 39 13. MT1379 VIDEO OUTPUT WAVEFORM 1) Full colorbar signal(CVBS) DCLK = 93MHz, Vp-p=2.2, Vmax=2.7V (IC604 PIN 23) FIG 13-1 2) Y (IC604 PIN 21) FIG 13-2 3-21...
  • Page 40 3) C DCLK = 93MHz, Vp-p=2.2, Vmax=2.7V (IC604 PIN 26) FIG 13-3 14. AUDIO OUTPUT FROM AUDIO DAC 1) Audio L/R (JK601 PIN 4,5) FIG 14-1 3-22...
  • Page 41 2) Audio related Signal ASDATA3 ASDAT3(IC501 PIN 157) ABCK(IC501 PIN 148) ALRCK(IC501 PIN 149) FIG 14-2 3-23...

  • Page 42: Block Diagrams

    BLOCK DIAGRAMS 1. Overall Block Diagram MA11,BA1 DQM[2:3] MUTE DQ[16:31] ASPDIF Y[1:6] CVBS ASPECT DQM[0:1] DQ[00:15] URST F+,F-,T+,T- SP+,SP- SL+,SL- LOAD+,LOAD- DECK MECHANISM LOEWE 3-24...
  • Page 43 2. Power(SMPS) Block Diagram TRANS SWITCHING IC LINE FILTER RECTIFIER LOEWE 3-25...
  • Page 44 3. SERVO Block Diagram LOEWE 3-26...
  • Page 45 4. MPEG & MEMORY Block Diagram LOEWE 3-27...
  • Page 46 5. VIDEO & AUDIO Block Diagram LOEWE 3-28...
  • Page 47 • CIRCUIT VOLTAGE CHART IC201 IC202 IC401 IC402 IC501 IC502 IC505 IC510 IC5A1 IC604 IC901 IC201 IC202 IC401 IC402 IC501 IC502 IC505 IC510 IC5A1 IC604 IC901 (MT1336E) (MOTOR) (CS4391) (AMP) (MT1379) (SDRAM) (EEPROM) (BUFFER) (FLASH) (MM1623XFBE) (F/UCOM) (MT1336E) (MOTOR) (CS4391) (AMP) (MT1379) (SDRAM)
  • Page 48 IC201 IC202 IC401 IC402 IC501 IC502 IC505 IC510 IC5A1 IC604 IC901 Q201 Q202 Q203 Q204 Q205 Q501 Q603 Q605 Q606 (MT1336E) (MOTOR) (CS4391) (AMP) (MT1379) (SDRAM) (EEPROM) (BUFFER) (FLASH) (MM1623XFBE) (F/UCOM) PIN STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY stop play...

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