Zenith XBR411 Manual Download Page 21

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3-13

3. Y/C CIRCUIT

(3) When the C(Color) signal doesn’t appear on the screen in PB Mode,

Is 5V applied to IC301
Pins23, 44, 45, 52, 68, 77?

Does the Color signal
appear at IC301
Pins41, 50?

Check the line of the REG
5V Line. (Power Circuit)

Replace X301.

Check C342, C341,
R333.

Is X301 (3.58MHz)
normal?

Replace IC301.

Does the Color signal
appear at IC301 Pin48?

Replace IC301.

YES

VCR ELECTRICAL TROUBLESHOOTING GUIDE

Summary of Contents for XBR411

Page 1: ...1 1 SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS 1 2 SERVICING PRECAUTIONS 1 3 THE STEPS FOR CHANGE THE OPTION CODE 1 4 SPECIFICATIONS 1 5...

Page 2: ...er splashes or sharp solder points Be certain to remove all loose foreign par ticles 4 Check for physical evidence of damage or deterioration to parts and compo nents for frayed leads or damaged insul...

Page 3: ...ve Parts include Metal panels Input terminals Earphone jacks etc Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged easily by static electricity Such componen...

Page 4: ...oding Standards MPEG 1 MPEG 2 Audio Compression Read AC 3 ATSC Standard for ATV MPEG 1 MPEG 2 Write MPEG 1 Layer 2 VCR PART Video Head System Double azimuth 4head helical scanning Tape Format Tape wid...

Page 5: ...2 1 SECTION 2 EXPLODED VIEWS CONTENTS EXPLODED VIEWS 2 2 1 Cabinet and Main Frame Section 2 2 2 Deck Mechanism RL 02A 2 3 3 Packing Accessory Section 2 4...

Page 6: ...469 463 255 469 256 257 469 469 469 469 470 A47A 463 463 300 A47 A00 A60 260 276 284 283 285 287 286 469 280 288 289 A48 274 A50 457 A43 A44 457 278 457 457 470 457 A46 A52 263 266 265 320 261 452 45...

Page 7: ...4 1025 1025 1030 1432 1038 1028 1432 1021 1432 1432 1032 1033 1011 1019 1020 1019 1009 1012 1013 1435 1014 1016 1015 1017 1018 1018A 1018B 1018C 1018E 1018D 1006 1045 1436 1024 1433 1029 1027 1027 100...

Page 8: ...ing Accessory Section BATTERY 808 BAG 804 PACKING 803 806 INSTRUCTION ASSEMBLY CABLE COAXIAL 810 CABLE ASS Y RF 801 REMOCON 900 BOX CARTON 802 PACKING 803 811 812 PLUG ASS Y 1WAY PLUG ASS Y 2WAY OPTIO...

Page 9: ...P C BOARD 3 59 VDR PART ELECTRICAL TROUBLESHOOTING GUIDE WAVEFORMS 3 60 1 POWER SMPS CIRCUIT 3 60 2 NO COMPONENT VIDEO SIGNAL WHEN PLAYING DISC 3 62 3 NO COMPOSIT S VIDEO SIGNAL WHEN PLAYING DISC 3 63...

Page 10: ...OVERALL WIRING DIAGRAM 3 2...

Page 11: ...t of the vertical synchronized signal to 6 5H 0 5H 412 s 1H 63 5 s PG Adjustment Method a 1 Playback the SP standard tape b 2 Press the ENTER key on the Remote controller and the REC key on the Front...

Page 12: ...e D102 normal Check or Replace the D102 Replace the D121 Replace the IC103 Replace the D126 Replace the D129 Replace the D130 Replace the D127 Replace the D128 YES YES YES YES YES YES YES YES YES YES...

Page 13: ...Q126 Is the Vcc 13V sup plied to Q126Collector Is the Vcc 33V sup plied to Q126 Base Is the Q126 Nomal Check or Replace the D126 NO NO NO YES YES YES NO VFD Check or Replace the R107 Is the R107 Norma...

Page 14: ...D129 Is the Vcc 30V supplied to Q120 Collector Is the Vcc 33V supplied to Q121 Collector Is the Vcc 30V sup plied to Q120 Base NO NO Check or Replace the ZD153 NO Check the HSR H signal from com Check...

Page 15: ...to SMPS 5 3VA troubleshooting Check IC501 Pins22 23 24 25 Do T UP Reel Pulses appear at the point between R556 and R536 Replace the T UP Reel Sensor RS501 Check the CST SW and the peripheral circuitr...

Page 16: ...run Do the DFG Pulses appear at PMC01 Pin11 Replace the Cap M Are the foil patterns and the Components between IC501 Pin 90 and PMC01 Pin11 shorted Replace IC501 Refer to 2 No 12VA of Power section D...

Page 17: ...d Does the CFG signal come into IC501 Pin87 Are the foil patterns and Components between IC501 Pin77 and PMC01 Pin9 shorted 2 SERVO CIRCUIT 3 When the Capstan Motor doesn t run NO NO NO YES YES YES Wh...

Page 18: ...tion button is pressed No I2 C bus communication Does Power appear at the Pull up impedence R569 R507 Replace IC501 Refer to SMPS 5 3VA Trouble Shooting Replace the defective switches Refer to SMPS 5...

Page 19: ...G 5V Line Power Circuit Is I2 C BUS signal applied to IC301 Pins53 54 55 Replace IC301 Is there REG12 on the plus terminal of C653 Check the REG 12V Line Power Circuit Check the Q605 Video Buffer Chec...

Page 20: ...cuit Check the System Circuit IC501 Pin18 Check the V H S W level Refer to SYSTEM Y C BUS CHECK Trouble Shooting Is the V H S W signal applied to IC301 Pin57 Does the Rectangular waveform 5V appear at...

Page 21: ...Pins23 44 45 52 68 77 Does the Color signal appear at IC301 Pins41 50 Check the line of the REG 5V Line Power Circuit Replace X301 Check C342 C341 R333 Is X301 3 58MHz normal Replace IC301 Does the Co...

Page 22: ...brightness normal Does signal appear at IC301 Pins41 50 NO Check X301 oscillation frequency YES Is the brightness signal sup plied to IC301 Pins18 Is 5V supplied to IC301 Pins23 44 45 68 77 Check the...

Page 23: ...Video signal appear at IC601 Pin 4 NO Check the signal flow from IC601 Pin23 to JK601 Pin Video out YES Check 33V line NO Check 5V line NO YES Does the Clock signal appear at TU701 Pin9 Check the l2...

Page 24: ...f IC801 Pins15 32 36 46 YES Check 5 2V Line NO Check the Tuner SiF signal at IC801 Pin57 YES Check the oscillator of IC801 Pin51 YES YES Check the Audio of IC801 Pins78 80 Check the Tuner SIF of TU701...

Page 25: ...the AV2 Audio of IC801 Pins9 71 Check the Vcc of IC801 Pins3 54 YES Check the IIC Clock and DATA at IC801 Pins37 38 YES Check the Audio of IC801 Pins78 80 YES Check the JK601 Check the VDR MODULE PMD0...

Page 26: ...witch IC801 Pin39 and the Tape quality Is the RF Envelope at IC801 Pin23 over 2Vp p YES Check IC801 Pin37 Data Pin38 Clock YES Do Audio Signals appear at IC801 Pin80 L CH 78 R CH YES Do Audio Signals...

Page 27: ...dio signals appear at IC801 Pins78 80 YES Do FM Audio signals appear at IC801 Pin27 YES Check the Contact Point of Drum Connector if good then Replace the Drum YES Check Power 5V 9V NO Check ports of...

Page 28: ...CK D124 C129 RECTIFIER SMOOTING BLOCK D123 C126 L124 C127 RECTIFIER SMOOTING BLOCK D122 C123 L123 C125 PHOTO COUPLER IC105 ERROR AMP IC106 FEED BACK BLOCK R131 R132 C141 R133 R161 R162 R163 12V REG S...

Page 29: ...K DATA AFT A OUT SIF TU 30V NC V OUT 999 GND 100 AFT 731 TU V OUT 875 MOD A IN 61 MOD CTL 106 5V 26 VCR H 671 MOD VEDIO 71 IIC CLK 72 IIC DATA 781 SIF OUT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 LGXBR4...

Page 30: ...PB FM EQ FM AGC CNC YNR COMB 4 21M BPF SUB CONV 39 37 36 34 26 22 21 P B PB Mode EP REC SP REC 57 V H SW 55 Y C ENA 54 Y C DATA 53 51 50 49 48 47 39 38 37 36 34 32 30 28 22 21 20 73 70 69 66 Y C CLOCK...

Page 31: ...11 80 78 A OUT R System IC801 LA72670M IC301 LA71206M AMP EQ AMP 78 4 10 A OUT R DATA CLOCK R P HEAD N A IN 53 ENA 55 54 5 4 6 From u COM 80 A OUT L OUTPUT SELECTOR EQ 3 2 IC301 LA71206M IC801 LA72670...

Page 32: ...Front A L 29 Front A R To AVCP To AVCP From AVCP VIDEO SW IC IC601 IC601 VIDEO AMP IC JK601 A V JACK IEC 958 From PMD01 Pin From To Hi Fi IC801 To Hi Fi AV1 Video in AV1 Audio in L R To TUNER MOD VID...

Page 33: ...6 4 26 27 80 A OUT L A OUT R 78 AUDIO INPUT BLOCK NORMAL AUDIO OUT To AVCP NORMAL AUDIO IN From AVCP SIF DVD A IN L DVD AUDIO DVD A IN R AV1 A IN L AV1 A IN R AV2 A IN L AV2 A IN R REAR JACK FRONT FM...

Page 34: ...58 80 88 49 40 37 98 34 IC501 M37760 MODE S1 I Limit MODE S2 MODE S3 MODE S4 62 VDR ENA 66 VDR DATA 65 VCR DATA 67 VCR ENA T UP Sensor T UP Reel SUP Reel CST IN Vss AMP Vss OSD Vss SYSCON Vcc SYSCON V...

Page 35: ...53 are Defective 12V No Power Q125 or ZD152 are Defective 2 5V No Power IC152 is Defective 12V No Power D125 is Defective No Power D104 is Defective 5V No Power D124 is Defective 1 8V No Power D123 is...

Page 36: ...3 36 3 37 EE MODE VIDEO TU MODE AUDIO 2 TU IF CIRCUIT DIAGRAM...

Page 37: ...Auto Tracking has failed IC301 Pin 57 is defective PB COLOR Signal does not appear IC301 Pins 53 54 55 are defective IC301 doesn t operate X301 is defective PB COLOR Signal disappear IC306 Q307 are d...

Page 38: ...3 40 3 41 4 JACK CIRCUIT DIAGRAM...

Page 39: ...3 42 3 43 5 Hi Fi CIRCUIT DIAGRAM...

Page 40: ...COM is unstable IC505 is defective VCR will not operate X501 is defective CLOCK SETTING will not operate X502 is defective COM will not operate ES501 ES502 LD501 are defective Auto Rew will not work R...

Page 41: ...3854R17328A 7 TIMER CIRCUIT DIAGRAM 3 46 3 47...

Page 42: ...3 48 3 49 8 FRONT A V 1394 JACK CIRCUIT DIAGRAM...

Page 43: ...REC RF IC501 WAVEFOM Tek Stop 10 0KS s 280 Acqs M5 00ms Ch1 Ch1 3 04 V 1 00 V T T 1 Tek Stop 250KS s 299 Acqs M 200 s Ch1 Ch1 3 04 V 1 00 V T T 1 Tek Stop 10 0KS s 18 Acqs M 5 00ms Ch1 Ch1 3 04 V Tri...

Page 44: ...6 5 03 2 28 0 0 0 0 PULSE 0 0 PULSE 2 54 2 53 0 2 59 2 59 2 52 2 52 5 08 5 17 2 64 4 84 2 3 5 0 1 57 4 84 1 57 0 2 36 3 23 1 55 0 2 32 5 2 33 0 2 35 0 2 36 0 2 06 2 06 0 2 08 0 0 2 35 0 4 83 3 06 5 1...

Page 45: ...3 54 3 55 LOCATION GUIDE PRINTED CIRCUIT DIAGRAMS 1 VCR P C BOARD...

Page 46: ...2 POWER P C BOARD LOCATION GUIDE...

Page 47: ...5 JACK P C BOARD LOCATION GUIDE...

Page 48: ...e the IC106 Replace the D123 Replace the D124 Replace the D125 YES YES YES YES YES YES YES YES YES Is Vcc 11V 18V supplied to IC101 Pin3 NO Are the D122 normal Is there about 2 5V at the IC106 Pin1 Is...

Page 49: ...the DVD PWR CTL H signal from com NO YES Check the IC151 and Replace YES No 1 8V Check or Replace the D123 Is there about 2 3V at the IC160 pin1 Is there about 3 3V 5V at the IC60 pin4 NO Check the D...

Page 50: ...C613 R608 C612 R607 C611 IC610 12 Check input IC610 14 Check input C636 C635 R464 R463 IC610 10 Check input C637 R462 FL505 FL506 FL507 Check Signal Check CLK X101 Check IC101 Power and Other Circuits...

Page 51: ...51 C639 R456 R4103 R4107 Check Signal R457 IC610 4 Check input C650 R458 IC5101 40 HIGH RST_VENC R154 R155 Signal and 3 3V level IC5101 41 42 Check I2C Clk Data Check R5101 CLOCK R5124 R5131 Check VO_...

Page 52: ...gnal power 12 V C644 Q605 C645 Check circuit FL501 Check signal IC301 28 YES YES YES YES YES YES YES YES YES YES YES YES YES IC502 34 HIGH RST_VDEC R4103 R4106 signal YES NO when reset IC502 28 29 Che...

Page 53: ...gnal flow NO YES Audio output even When playing DISC PN304 19 22 Check audio signals NO Check FFC Cable and VCR part NO Check FFC Cable and VCR part Check IC801 power and other circuits NO Check AV_RS...

Page 54: ...cuits YES when playing DISC no audio output check Check Audio Cable Audio output even When playing DISC PN5401 4 6 Check audio signals PN304 27 30 Check audio signals NO NO Check PN302 5 6 and Front J...

Page 55: ...46 YC MIX NJM2274 DV 1394 TSB41AB1 Control Reg Block MEMORY CARD Block DDR Memory ADAC CS4271 AI_D0 AO_D0 VI_D 0 9 VO_D 7 0 G Y_OUT B Pb_OUT R Pr_OUT DMN8602 BIO_PHY_DATA 0 7 GPIOExt HD 15 0 RESET SIO...

Page 56: ...02 TVP5146 TSB41AB1 NJM2274 CS4271 74ALT16245 FLASH DMN8602 DDR 74LVC245 74LVC32 74LVC04 74LVC541 74LVC08 E5_3V3 E5_1V8 E5_5VD E5_2V5 2 5V 5VD 1 8V 3 3V VTT LP2995 1 25V 1 25V VDDD VDDA IOVDD A18VDD D...

Page 57: ...2 NJM5532 IC804 IC804 IC804 IC804 Z_MUTE_R A_L A_R OP AMP2 OP AMP2 OP AMP2 OP AMP2 MC33202 MC33202 MC33202 MC33202 IC803 IC803 IC803 IC803 DAC_SDATA AO_D0 SCL SDA SCL SDA AUDIO AUDIO AUDIO AUDIO MUTE...

Page 58: ...AV_RST RST_VDEC RST_VENC RST_PHY RST_AUDIO Connecto r PN302 Connecto r PN302 Connecto r PN302 Connecto r PN302 Connecto r PN304 Connecto r PN304 Connecto r PN304 Connecto r PN304 I P D_CONT VDR_RESET...

Page 59: ...C 0 VI_D 9 0 AV_RST1 Y_IN C_IN V2_MIX_OUT MIX_OUT RST_VDEC VO_D 7 0 VO_CLK SCL SDA RST_VENC VO_D 7 0 VO_CLK G Y R Pr B Pb G_Y_OUT R_Pr_OUT B_Pb_OUT Y_OUT C_OUT CVBS_OUT Connector PN304 14 3MHz X501 VD...

Page 60: ...3 72 6 DV 1394 IN OUT BLOCK DIAGRAM TPA PHY_DATA 7 0 PHY_CTL 0 PHY_LREQ PHY_LPS PHY_LINK_ON PHY_CLK AV_RST RST_PHY TPA TPB TPB E5 BGA308 DMN8602 IC101 DV 1394 TSB41AB1 IC601 JACK Connector PN302...

Page 61: ...LVC32 LVC32 LVC32 IC6904 IC6904 IC6904 IC6904 PA 2 0 E5_ALE GPIOExt OE WE RST MEMC_OE WE RST DR DW RST READY IO_READY WAIT WAIT CS2 C S2 ATA_CON_SIG Control Control Control Control Reg Block Reg Bloc...

Page 62: ...3 74 3 75 CIRCUIT DIAGRAMS 1 BGA 308P CIRCUIT DIAGRAM...

Page 63: ...3 76 3 77 2 DDR B TO B CONNECTOR CIRCUIT DIAGRAM...

Page 64: ...3 78 3 79 3 POWER FLASH CONNECTOR CIRCUIT DIAGRAM...

Page 65: ...3 80 3 81 4 RST CONTROL STATUS_REG ATAPI HOST_CPLD LATCH CIRCUIT DIAGRAM...

Page 66: ...3 82 3 83 5 VIDEO_IN VIDEO_OUT CIRCUIT DIAGRAM...

Page 67: ...3 84 3 85 6 DV1394 HDMI CIRCUIT DIAGRAM...

Page 68: ...3 86 3 87 7 AUDIO IN OUT CIRCUIT DIAGRAM...

Page 69: ...N11 C_OUT PN304 PIN17 R_Pr_OUT PN304 PIN13 G_Y_OUT PN304 PIN15 B_Pb_OUT IC5101 PIN4 VO_CLK PN303 PIN1 IEC958 IC802 PIN3 ADAC_MCLK IC802 PIN5 ADAC_SCLK IC802 PIN4 ADAC_LRCK IC802 PIN6 ADC_SDATA AI_D0 I...

Page 70: ...0 50 1 33 0 372 0 376 51 0 46 0 369 0 379 52 0 43 0 382 0 372 53 0 00 0 392 0 397 54 0 03 1 855 0 382 55 1 86 0 39 1 852 56 0 00 1 855 0 57 1 20 0 0 866 58 0 41 1 059 0 7 59 0 41 1 056 0 759 60 0 37...

Page 71: ...3 92 3 93 LOCATION GUIDE PRINTED CIRCUIT DIAGRAMS 1 VCR P C BOARD TOP VIEW...

Page 72: ...3 94 3 95 2 POWER P C BOARD BOTTOM VIEW LOCATION GUIDE...

Page 73: ...3 96 3 97...

Page 74: ...4 TRACK OFF SIGNAL CD 3 123 25 TRACK OFF SIGNAL DVD 3 124 26 TILT DRIVER SIGNAL DISC READING 3 124 27 RF WAVEFORM DVD 3 125 28 RF WAVEFORM CD 3 125 29 WOBBLE DVD R RW _READING 3 126 30 WOBBLE DVD R RW...

Page 75: ...1 of CN202 12V 5V respectively after the power cable connecting Does the pin 3 of IC202 change 0V to 3 3V at the power supply initial input mode Are the X201 X300 oscillating Power Is the pin 5 of IC...

Page 76: ...sc Does tray operate normally YES YES YES YES YES NO NO NO NO NO NO NO YES YES Does pick up move to inside Does laser turn on After eject tray insert DVD Disc and check rotation After eject tray Inser...

Page 77: ...place the IC103 Check the communication line between IC107 and IC301 Is there tray control signal input IC102 pin46 When CN303 is open Is there tray drive signal output Is there tray drive voltage out...

Page 78: ...ut IC107 pin 8 9 YES YES YES YES YES NO NO NO NO NO Is there sled drive signal input IC102 pin 29 30 Is DRV CTRL1 signal H IC102 pin35 Replace the IC102 Replace the sled motor Check the connection of...

Page 79: ...tage output IC102 pin 11 13 16 Is there SFG signal input IC301 pin 28 Check the connection of IC102 pin 43 Check the connector CN103 Replace the IC102 Replace the IC201 Check the R145 R143 Replace the...

Page 80: ...FDRV signal output normal in Focusing Up Down IC201 pin 131 Go to Focus Actuator operating is abnormal Focus Actuator operating is abnormal Is there focus search control signal input IC102 pin 5 Is t...

Page 81: ...Replace the IC201 Check the pick up FFC Replace the pick up After replacing Perform 5 Optical Power Setting from How to use Test tool Check the connection between IC201 pin141 and IC106 pin 85 Is TE s...

Page 82: ...place the IC106 Go to Tracking Servo is unstable Check the pick up FFC and CN102 Replace the pick up unit Does focus servo operate normally Check pick up RF signal IC106 Pin113 RFO TP161 is 500 1000mV...

Page 83: ...EN DVD level was about 0V Is there RF signal at CN102 pin 13 14 Is there RF signal at IC106 pin 95 Check again after the replace IC106 Is it OK Recognition Fail Case 3 DVD R RW Fail Is there AWOBBLE I...

Page 84: ...rameter check from How to use Test tool Execute C Laser Power Setup of How to use Test Tool Check reference voltage E F G FPD VRDC VWDC1 VWDC2 Is ALPC parameters valid Perform 4 LD Test check from How...

Page 85: ...to use Test tool Select Mode DVD Test and perform Test from 4 LD Test of How to use Test tool Check the input of LDEN DVD pin 17 of CN102 H Check the input of LDEN DVD pin 17 of CN102 H Check the inp...

Page 86: ...CN102 Check the input of recording pulse pin 2 3 6 of IC108 Check the input of FPD pin 19 of CN102 END G Select Mode DVD Test and perform Test from 4 LD Test of How to use Test tool Check the input of...

Page 87: ...Go to Writing Part Check Remove the dust fingerprint and if the disc has long width scratch change it Check the media DVD R RW Does the disc have any dust scratch fingerprint Finalized Disc If DVD R d...

Page 88: ...e read normally OK Check and replace the connection of IC201 pin 160 Do the IC302 pin 58 59 output toggle signals during writing Check and replace the IC301 Eject tray Go to LD CHECK Is the re written...

Page 89: ...3 112 WAVEFORMS 1 POWER RESET Signal HRST IC202 PIN 3 RST IC202 PIN2 12 V CN202 PIN4 5 V CN202 PIN 1 X201 IC201 PIN 3 GND LEVEL POWER IN 2 Main Clock1 for IC202 16 9MHz...

Page 90: ...3 113 3 Main Clock2 for IC302 20MHz X300 IC301 PIN 13 4 SDRAM Clock...

Page 91: ...E SIGNAL 1 TRAY CN303 PIN 1 EJECT KEY SW 302 PIN1 TRAY CTRL IC102 PIN46 TRAY CN303 PIN 2 OPEN CLOSE OPEN SW CN303 PIN 4 EJECT KEY SW 302 PIN1 TRAY CTRL IC102 PIN46 LOAD SW CN303 PIN 5 OPEN CLOSE 6 TRA...

Page 92: ...3 115 7 SLED MOVE SIGNAL 1 A CN100 PIN 2 STEP1 IC107 PIN8 STEP2 IC107 PIN9 A CN100 PIN 1 ZOOM A CN100 PIN 2 STEP1 IC107 PIN8 STEP2 IC107 PIN9 A CN100 PIN 1 8 SLED MOVE SIGNAL 2...

Page 93: ...3 116 9 FOCUS SEARCH SIGNAL F IC102 PIN 52 FDRV IC104 PIN13 VRDC CN102 PIN 34 LDEN DVD CN102 PIN17 F IC102 PIN 51 F IC102 PIN 52 10 LASER TURN ON SIGNAL...

Page 94: ...3 117 11 DISC TYPE JUDGEMENT WAVEFORM CD SERIES FE IC106 PIN87 ZOOM F IC102 PIN 52 FE IC106 PIN87 F IC102 PIN 52 12 DISC TYPE JUDGEMENT WAVEFORM CD CD R...

Page 95: ...3 118 13 DISC TYPE JUDGEMENT WAVEFORM CD RW FE IC106 PIN87 F IC102 PIN 52 ZOOM FE IC106 PIN87 F IC102 PIN 52 14 DISC TYPE JUDGEMENT WAVEFORM DVD SERIES...

Page 96: ...3 119 15 DISC TYPE JUDGEMENT WAVEFORM DVD_SINGLE R FE IC106 PIN87 F IC102 PIN 52 FE IC106 PIN87 F IC102 PIN 52 16 DISC TYPE JUDGEMENT WAVEFORM DVD _DUAL...

Page 97: ...3 120 17 DISC TYPE JUDGEMENT WAVEFORM DVDRW FE IC106 PIN87 F IC102 PIN 52 MDRV IC104 PIN 9 SFG IC102 PIN43 SRVC IC104 PIN 10 18 SPINDLE WAVEFORM1...

Page 98: ...3 121 19 SPINDLE WAVEFORM2 SFG IC102 PIN43 U IC101 PIN11 V IC101 PIN13 W IC101 PIN16 ZOOM FE IC106 PIN87 F IC102 PIN 52 TE IC106 PIN85 T IC102 PIN 54 20 FOCUS ON SIGNAL CD...

Page 99: ...3 122 21 FOCUS ON SIGNAL CD FE IC106 PIN87 F IC102 PIN 52 TE IC106 PIN85 T IC102 PIN 54 ZOOM FE IC106 PIN87 F IC102 PIN 52 TE IC106 PIN85 T IC102 PIN 54 22 FOCUS ON SIGNAL DVD...

Page 100: ...3 123 23 FOCUS ON SIGNAL DVD FE IC106 PIN87 F IC102 PIN 52 TE IC106 PIN85 T IC102 PIN 54 TZC IC106 PIN74 MIRRBCA IC106 PIN77 TE IC106 PIN85 24 TRACK OFF SIGNAL CD...

Page 101: ...3 124 25 TRACK OFF SIGNAL DVD TZC IC106 PIN74 MIRRBCA IC106 PIN77 TE IC106 PIN85 TILTDRV IC102 PIN47 TILT IC102 PIN50 TILT IC102 PIN49 26 Tilt Driver signal Disc reading...

Page 102: ...3 125 27 RF WAVEFORM DVD RFP IC106 PIN2 RFI IC106 PIN 95 RFO IC106 PIN 113 RFP IC106 PIN2 RFI IC106 PIN 95 RFO IC106 PIN 113 28 RF WAVEFORM CD...

Page 103: ...3 126 29 WOBBLE DVD R RW _READING AWOBBLE IC106 PIN81 LPP HEAD IC106 PIN 73 AWOBBLE IC106 PIN81 LPP HEAD IC106 PIN 73 30 WOBBLE DVD R RW _READING WRITING X1 SPEED...

Page 104: ...3 127 31 LD Enable DVD LDENCD CN102 PIN 38 LDENDVD CN102 PIN 17 LDENCD CN102 PIN 38 LDENDVD CN102 PIN 17 32 LD Enable CD...

Page 105: ...er reading _DVD RW VRDC CN102 PIN 34 VWDC2 CN102 PIN 35 VWDC1 CN102 PIN 36 OPECTRG IC1201 PIN 165 About 440mv VRDC CN102 PIN 34 VWDC2 CN102 PIN 35 VWDC1 CN102 PIN 36 OPECTRG IC1201 PIN 165 34 Laser Po...

Page 106: ...5 Laser Power Writing _initial state VRDC CN102 PIN 34 VWDC2 CN102 PIN 35 VWDC1 CN102 PIN 36 OPECTRG IC1201 PIN 165 VRDC CN102 PIN 34 VWDC2 CN102 PIN 35 VWDC1 CN102 PIN 36 36 Laser Power Writing _Proc...

Page 107: ...3 130 The difference of DVD R RW DVD R RW discs and DVD ROM 1 Recording Layer 0 74um 3T 0 4 um DVD ROM Read Only Disc DVD R RW Disc...

Page 108: ...3 131 2 Disc Specification 3 Disc Materials 1 DVD ROM Single Layer Dual Layer...

Page 109: ...laser When a strong laser is applied to a disc the temperature of the organic dye material goes up the dye is decomposed and the substrate changes at the same time At this time a durable bit is creat...

Page 110: ...a low reflection coefficient when it quickly cools off When a mid power laser is applied to heat gradually the recording material and then gradually cools it off it becomes crystal with a high reflect...

Page 111: ...for DVD RW has Type 1 and Type2 In Type 1 the mark with nT width is created by one top pulse and n 2 multi pulses Thus mark 3T is made by one top pulse and one multi pulse In Type 2 the mark with nT w...

Page 112: ...mm Diameter 22mm 3th transition area Diameter 33mm Diameter 44mm 1th transition area 2th transition area Rim area Data Zone Lead in Zone Inner Drive Area Unrecorded Disc Outer Drive Area Inner Disc Te...

Page 113: ...ormed in IDT Zone 3 Layout of DVD RWdisc Data Zone Lead in Zone Unrecorded Disc Lead out Zone Inner Disc Test Zone in 2A7C80H 2DC80H Information Zone Center hole Clamping Zone Diameter 120 mm Diameter...

Page 114: ...ibration Area in 203B0H 22F90H Unrecorded Disc Center hole Clamping Area Diameter 120 mm Diameter 15mm Disc Center Diameter 16mm Diameter 22mm 3th transition area Diameter 33mm Diameter 44mm 1th trans...

Page 115: ...temperature variation There are two power control loops in uPC3330 which are used with different combination for different applications Generally the first ALPC loop is used for read power control Th...

Page 116: ...A or equivalent Personal Computer Adjustment Program Dragon or ALPC for SVC ALPC Program recommended N Fl optional equipment USB ATAPI Interface needed when using USB Port from the laptop computer wit...

Page 117: ...elmn txt is a configuration file Determine how to connect The following contents are included when you open modelnm txt file The following contents are included when you open LGE connect 0 connect 0 i...

Page 118: ...CD DVD Selection Laser Power Setup window Laser Read Power On Laser Write Power On Laser off Used When inputting to EFROM after Lser power measurement When Laser Power Test ALPC Setup or LD Test Sele...

Page 119: ...W_FPD VW2 1 VW2 2 CD 2 4 0 03 0 53 0 22 0 02 0 01 0 36 0 06 0 115 0 015 0 034 0 01 0 125 0 020 DVD 2 4 0 03 0 7 0 2 0 04 0 01 0 43 0 05 0 2 0 02 0 08 0 02 0 2 0 03 Test result output when All OK OK Sp...

Page 120: ...Push Write power On Caution Light is very strong Never look at the light directly Measure optical power and push LCD off Write measurement value in Read Power Push Measurement value is inputted to EE...

Page 121: ...ttings recorded in EEPROM Write down these settings on the paper perform optical power setting and press again then new optical power set tings will appear Compare these two parameters If there is a b...

Page 122: ...DAC 30 120 2 CD RW READ Reference DAC 80 250 3 VWDC1 10 39 4 VWDC1 Offset 0 20 5 VWDC2 20 57 6 VWDC2 Offset 0 20 DVD 1 CD R READ Reference DAC 40 145 2 CD RW READ Reference DAC 40 145 3 VWDC1 30 100 4...

Page 123: ...t correctly Optical power mesurement procedure 1 Adjust optical power meter s wave length to DVD Generally 650 nm 2 Turn DVD LD on 3 Place sensor less than 3mm apart from pick up object lens perpendic...

Page 124: ...LPF1 SALPF2 UAD 0 7 UA 8 14 RST U V W RFN RFP SPINDLE MOTOR Pick Pick up up Disc LD Driver LD LD Driver Driver SLED MOTOR PD PD PD RFI SWRF1 SWRF2 LDQM CAS WE RAS MBA MCLK MCKE UDQM MD 0 15 A T A P I...

Page 125: ...3 148 2 RF Block Diagram...

Page 126: ...3 149 3 PSP Block Diagram...

Page 127: ...3 150 4 MICOM Block Diagram...

Page 128: ...3 151 3 152 CIRCUIT DIAGRAMS 1 RF CIRCUIT DIAGRAM...

Page 129: ...3 153 3 154 2 DSP CIRCUIT DIAGRAM...

Page 130: ...3 155 3 156 3 COM CIRCUIT DIAGRAM...

Page 131: ...0 3 3 5 0 0 3 3 3 3 3 3 0 0 0 0 1 7 1 7 0 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67...

Page 132: ...3 159 3 160 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE...

Page 133: ...3 161 3 162 2 MAIN P C BOARD LOCATION GUIDE...

Page 134: ...ECHANISM ADJUSTMENT Fixtures and tools for service 4 12 1 Check of Mechanism Assembly Mode 4 13 2 Previous Preparation for Deck Adjustment 4 14 3 Torque Measuring 4 14 4 Adjustment of Guide Roller Hei...

Page 135: ...A 5 T 17 19 Arm T up 1 hook A 5 T 20 Supporter capstan Chassis Hole A 6 B 17 18 21 Belt Capstan Motor Capstan3 screws A 6 B 22 Lever F R Locking Tab A 6 B 21 22 23 Clutch Assembly D37 Washer A 6 B 24...

Page 136: ...arate cable flat from the Drum FPC and the Capstan Motor 2 Release 3 screws S1 on the bottom side of the chassis and separate the drum assembly 3 Release the hooks H1 H2 and separate both the holder F...

Page 137: ...SEMBLY OF DECK MECHANISM 4 3 B E C Plate Top Arm Assembly F L Gear Assembly Rack F L Opener Door Holder Assembly CST B H3 A B Lever Assembly S W H4 E Fig A 2 Fig A 2 1 Fig A 2 2 Fig A 2 5 Fig A 2 6 Fi...

Page 138: ...Disassembly of Gear Assembly Rack F L Fig A 2 3 1 Separate the hook H3 while leaning ahead the hook 3 after moving the gear assembly rack F L toward the arrow A direction 2 Separate the gear assembly...

Page 139: ...rm Assembly Cleaner Fig A 3 3 1 Separate the A part of Fig A 3 1 from the embossing of chassis and hold it up while turning it anti clockwise 11 Head F E Fig A 3 4 1 Separate the A part of the head F...

Page 140: ...hile holding it upward 14 Arm Assembly Tension Fig A 4 2 1 Release the spring tension the hook H7 from the arm assembly tension 2 After releasing the hook H8 of the base tension sepa rate it while hol...

Page 141: ...e 17 Opener Lid Fig A 5 2 1 Release the B part of the opener lid from the embossing of chassis 2 Disassemble the opener lid upward while turning it anti clockwise 18 Arm Assembly Pinch Fig A 5 3 1 Hol...

Page 142: ...90 deg clockwise with a driver for disassembly 21 Belt Capstan Fig A 6 2 Motor Capstan Fig A 6 3 1 Separate the belt Capstan 2 Undo 3 screws S6 on the bottom side of chassis and dis assemble it upwar...

Page 143: ...r Fig A 7 3 1 Release the hook H11 of the gear sector and then hold the gear sector upward 26 Brake Assembly Capstan Fig A 7 4 1 Release the locking tab L2 on the bottom side of the plate slider and t...

Page 144: ...assem bly P2 and the P3 are adjusted straightly and then corre spond the gear section groove A to the plate slider hole B 32 Base Assembly P2 Fig A 8 3 Base Assembly P3 Fig A 8 4 1 Disassemble the ba...

Page 145: ...se tension from the embossing of chassis 2 Hold the base tension upward while turning it anti clock wise 35 Arm assembly Idler Jog Fig A 9 2 1 Push both B C parts in Fig A 9 2 toward the arrow directi...

Page 146: ...D00 D006 4 Torque gauge adaptor Part No D09 R001 5 Post height adjusting driver Part No DTL 0005 6 Type driver 5 2 Alignment tape Part No NTSC DTN 0001 PAL DTN 0002 3 Torque gauge 600g Cm ATG Part No...

Page 147: ...frame and separate the deck assembly Check both the hole A of gear cam and the hole A of chassis correspond Fig C 1 5 Check the mode S W on the main P C board locates at a proper position as in B of t...

Page 148: ...les on the housing rail part of chassis to prevent detection of the end sensor If doing so proceeding to the stop mode is done In this status input signals of all modes can be received However operati...

Page 149: ...of oscilloscope to the RF envelope output point and the head switching output point 2 Tracking control playback Locate it at the center Set the RF output to the maximum value via the track ing contro...

Page 150: ...he A C head If it is Turn and adjust the tilt adjusting screw to ensure that the tape corresponds to the bottom guide of the P4 and recheck the tape path after pro ceeding play for 4 5 seconds 3 Where...

Page 151: ...n cutting off the REV mode CAUTIONS If the RF waveform is changed after adjusting the A C head perform fine adjustment to ensure the RF waveform is flat tened Adjustment Procedure 1 Connect the probe...

Page 152: ...ELOPE OUTPUT POINT V2 V1 V1 V1 V MAX 0 7 V1 V MAX 0 8 RF ENVELOPE OUTPUT HEAD RF SWITCHING OUTPUT POINT OSCILLOSCOPE Connection Diagram Waveform CH 2 CH 1 Checking Procedure 1 Check that locking time...

Page 153: ...VIEW Fig C 9 2 BOTTOM VIEW F E Head Video Head A C Head Pinch Roller Belt Capston Clutch Assembly A37 Fig C 9 3 Tape Transport System Pollution of Video Head or Tape Transport System Poor Sound Low S...

Page 154: ...C 9 4 Firstly try to use a cleaning tape 1 Use a cleaning patch if foreign materials are not removed with the cleaning tape due to severe dirty of the head Soak the cleaning patch in alcohol and put...

Page 155: ...Part PL 433 Yellow Gear Part PL 433 Yellow Boss Part Side Wall PL 433 Yellow Gear Part Side Application PL 433 Yellow Cam Part Side Application KG 684G Green Gear Sector Gear Cam Base Loading Gear Dri...

Page 156: ...PROTECTION MAINTENANCE AND CHECK OF VIDEO FUNCTION 4 22 Lever F R Base Tension GEAR AY P2 P3 LEVER F R Clutch Contact Part PL 433 Yellow Tension Arm Party Hinge Part PL 433 Yellow BASE TENSION PL 433...

Page 157: ...yscon checked NO YES YES YES YES NO NO 1 Deck Mechanism A NO NO NO No F R operates Is the current mode an F R mode Check the assembly position of the Mode S W Is normal voltage applied at the Vcc1 and...

Page 158: ...the spring pinch Replace the drum motor Check the Servo Syscon Check the Syscon com No cassette loading is done Insert the cassette Check the holder assembly CST Does output of the CST IN S W change...

Page 159: ...ck the Syscon circuit Check the Syscon circuit Check the Syscon circuit Does the Capstan motor turn Is the Vctl terminal voltage of the drum motor at more than 2 3V Replace the drum motor Is the Vcc v...

Page 160: ...ly YES Is there short between the cassette switch terminal and the GND on the main P C B assembly Replace the main P C B assem bly or remove the short part NO Check the mode switch position and the Sy...

Page 161: ...mbly F L Check power supply of the L D motor Check the assembly status of the holder assembly cassette Replace the gear rack F L Does the gear rack F L operate Does the opener door operate Does the ar...

Page 162: ...4 28 EXPLODED VIEWS 100 A21 A23 A24 032 109 A22 054A 054 115 116 110 112 113 114 103 105 102 106 107 1 Front Loading Mechanism Section...

Page 163: ...EXPLODED VIEWS 4 29 008 011 031 079 017 032 024 406 031 021 028 029 026 A03 027 022 003 004 006 007 014 015 009 409 013 016 012 OPTIONAL PART A01 405 2 Moving Mechanism Section 1...

Page 164: ...EXPLODED VIEWS 4 30 052 517 061 056 518 052A 055 410 032 077 076 078 060 051 064 A11 A12 067 066 065 068 069 070 023 080 058 3 Moving Mechanism Section 2...

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Zenith XBR411, Manual

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