Zenith DVB352 Service Manual Download Page 41 | Manualshive

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3-31

3-32

Program download fail

No Power on

Digitron all not display
System not working

System not working or
screen is abnormal

System not working or
Digitron not display

System not operate

SR5850A

DM7912N

Video signal Y

Video signal Color

AUDIO DAC
interface

VIDEO
interface

RF & MOTOR DRIVE
interface

2. SYSTEM CIRCUIT DIAGRAM

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Summary of Contents for DVB352

Page 1: ...Line D Product Year 2003 Summary 1 Cabinet Main Chassis 2 Electrical 3 Parts List 4 Published September 2003 by Technical Publications Zenith Electronics Corporation 201 James Record Road Huntsville A...

Page 2: ......

Page 3: ...UMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS 1 2 SERVICING PRECAUTIONS 1 3 General Servicing Precautions Insulation Checking Prodedure Electrostatically Sensitive Devices SPE...

Page 4: ...s solder 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...

Page 5: ...pan els Input terminals Earphone jacks etc Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged easily by static electricity Such components commonly are called...

Page 6: ...4 kHz DVD PCM 48 kHz 8 Hz to 22 kHz CD 8 Hz to 20 kHz Signal to noise ratio More than 100dB ANALOG OUT connectors only Harmonic distortion Less than 0 008 Dynamic range More than 100 dB DVD More than...

Page 7: ...2 1 SECTION 2 CABINET MAIN CHASSIS CONTENTS 1 EXPLODED VIEWS 2 2 1 Cabinet and Main Frame Section 2 2 2 Packing Accessory Section 2 4...

Page 8: ...2 EXPLODED VIEWS 1 Cabinet and Main Frame Section 465 465 250 462 462 300 DIG901 465 261 260 275 463 463 465 467 463 463 463 A00 A47 A46 A48 A43 A42 A49 283 280 452 452 320 261A 261A A 5 4 3 2 1 B C...

Page 9: ...TAL DM6912N HA1UZZ 5 SLIM KEY2 ZEN PARTS SECTION 250 3111R D001D O CASE ASSEMBLY DM6912N HA1UZZ TOP 260 3140R 0056A O CHASSIS DVD DM6000 MAIN 261A 5040R 0069D O RUBBER FOOT SILICONE SPONGE DS 08 T 275...

Page 10: ...EMBLY DVD DM7912NM HA1UZZ 802 3890R H819L O BOX DM7921PM HA1UZZ SWM3 A 1 472 4 803 3920R E063A O PACKING CASING DM6000S 0 02 120 EPS 4 615 128 804 292 053D O BAG LVP 1 NSP 806 6850R DDA82 O CABLE DIN...

Page 11: ...0 TRACKING CONTROL RELATED SIGNAL System checking 3 19 11 RF WAVEFORM 3 20 12 MT1379 AUDIO OPTICAL AND COAXIAL OUTPUT ASPDIF 3 20 13 MT1379 VIDEO OUTPUT WAVEFORM 3 21 14 AUDIO OUTPUT FROM AUDIO DAC 3...

Page 12: ...resent at emitter of Q107 Replace Q107 Is there a DC voltage At terminal of BD101 Is there a DC voltage at R101 Replace IC101 Check F101 1 Power check flow No VF Is 5 2VA section working Replace D109...

Page 13: ...in 5 tray Recieve OPEN CLOSE Key Receive CLOSE Key 1 Stop Playback Open Tray 2 Display tray open message LOGO 1 Execute Pressed Key IR Key 2 Systemoperati on Routi ne Loop 1 Judge disc type in frse t...

Page 14: ...Check FLASH R Wenable signal PRD RWR 4 Check RS232 SIGNALS 5 Check FLASH Memory related circui t Check the AC Vol tage Power PCBA 110V or 220V Switch on the Power PCBA Is the DC Vol tage outputs OK 5...

Page 15: ...heck the Tray control IO pins on MT1376 MT1379 Check the Tray control amplifying circuit on Motor driver IC202 Does Tray move inside when it is not at closed position Normal TROUT TRIN signals Normal...

Page 16: ...Lens has movements for searching Focus Proper F F outputs Check cable connect on with pick up head Proper FOSO outputs to motor driver Check FOSO connection on MT1379 and motor dirver Check the amp c...

Page 17: ...ircuit on MT1336 RFL signal Collector voltage of power transistor is OK Q204 Q205 Check cable connection between transistor couput and pick up head Laser off Proper RFL signal on MT1336 Proper DMSO si...

Page 18: ...signal on MT1336 Proper FEO signal on MT1336 Check the related circuit on MT1336 FEO sugnal Check the related circuit on MT1336 Properly TRSO signal on MT1379 T T output properly Check the TRSO conne...

Page 19: ...Audio filter amplify mute circuit IC602 Application circuit Check the cable connection on Front pannel Check connection between MT1379 Audio DAC Check VRST ACLK ABCK ASDAT3 Check the related circuit...

Page 20: ...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 PWR_CTL CN505 PIN 7 5 2VA Power Cord in M_RESET CN50...

Page 21: ...3 11 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...

Page 22: ...DRAM CLOCK 1 MT1379 main clock is at 27MHz X501 IC502 IC503 PIN 35 DCLK 93MHz Vp p 2 2 Vmax 2 7V FIG 2 1 3 TRAY OPEN CLOSE SIGNAL 1 Tray open status waveform MODE1 OPEN MODE2 CLOSE MODE3 CHECK TROPEN...

Page 23: ...3 13 2 Tray close status waveform MODE1 OPEN MODE2 CLOSE MODE3 CHECK TROPEN FIG 3 2 3 Tray exchage status waveform MODE1 OPEN MODE2 CLOSE MODE3 CHECK TROPEN FIG 3 3...

Page 24: ...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...

Page 25: ...TROL 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 IC2...

Page 26: ...3 16 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...

Page 27: ...3 17 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...

Page 28: ...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...

Page 29: ...19 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...

Page 30: ...3 20 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...

Page 31: ...3 21 13 MT1379 VIDEO OUTPUT WAVEFORM 1 Full colorbar signal CVBS IC604 PIN 23 DCLK 93MHz Vp p 2 2 Vmax 2 7V FIG 13 1 2 Y IC604 PIN 21 FIG 13 2...

Page 32: ...3 22 3 C IC604 PIN 26 DCLK 93MHz Vp p 2 2 Vmax 2 7V FIG 13 3 14 AUDIO OUTPUT FROM AUDIO DAC 1 Audio L R FIG 14 1 JK601 PIN 4 5...

Page 33: ...3 23 2 Audio related Signal ASDAT3 IC501 PIN 157 ABCK IC501 PIN 148 ALRCK IC501 PIN 149 ASDATA3 FIG 14 2...

Page 34: ...01 MT1336E RF SLED FEEDING MOTOR SL SL IC202 LA6560 MOTOR DRIVER M V33 DV33 AV33 DV33 V25 VCC DV33 3V3M ACLK ABCLK ALRCK IC604 MM1623XFBE VIDEO BUFFER ASPDIF COAX OPTICAL ASPECT VCC RVCC AVCC AV33 V25...

Page 35: ...29VA VF RECTIFIER LINE FILTER SWITCHING IC TRANS FEED B REG 8V 8V 5 2VA VF RECTIFIER FLD RECTIFIER 9V RECTIFIER 5 2V LPF LPF RECTIFIER 14V LPF 12V_A AC90 240V PWR ON OFF REG 3 3V 3 3V 3 3V_M 3 3V_M1 R...

Page 36: ...SL SL TURN_M TURN_M TURN_M TURN_M LOAD LOAD 27MHz X TAL RFOP RFON LD0 1 LDO 2 IOA MDI 1 ALPC V20 SDEN SDATA SCLK PWMOUT2 LIMIT TRIN TROUT TRCLOSE STBY V1P4 IC302 GM72V161621 1M x 16bit SDRAM IC303 GM...

Page 37: ...FRONT BOARD IC502 SDRAM 16M RFOP RFON HTRC RFRP RFL DCLK WE CAS RAS CS DCKE MA 0 10 DQM0 DQM1 DQ 0 15 DQM2 DQM3 DQ 16 31 X501 27MHz SCL SDA Y2 Y Y3 Color Y4 Y Y5 Cb Y6 Cr ASPECT 16 9 FEO CSO TEO ADIN...

Page 38: ...IC302 OP Amp LPF Buffer IC303 OP Amp LPF Buffer IC304 OP Amp LPF Buffer CVBS COMPONENT R G B Y Pb Pr SUPER VIDEO Y C R G B Y Pb Pr Y C DAC RESET ACLK SCL SDA DAC RESET ACLK SCL SDA ADATA1 ADATA2 ADATA...

Page 39: ......

Page 40: ...THE LATEST SAFETY AND PERFORMANCE IMPROVEMENT CHANGES INTO THE SET IS NOT DELAYED UNTIL THE NEW SERVICE LITERATURE IS PRINTED NOTE 1 Shaded parts are critical for safety Replace only with specified pa...

Page 41: ...splay System not working System not working or screen is abnormal System not working or Digitron not display System not operate SR5850A DM7912N Video signal Y Video signal Color AUDIO DAC interface VI...

Page 42: ...3 33 3 34 3 RF SERVO CIRCUIT DIAGRAM CD DVD LD will not on SR5850B DM7912N...

Page 43: ...3 35 3 36 4 TIMER CIRCUIT DIAGRAM Digital abnormal System not operate or Digitron abnormal or Key not operate System not operate Remocon not operate SR14171B DM7912N...

Page 44: ...3 37 3 38 5 2CH 5 1CH CIRCUIT DIAGRAM 5 1CH Audio Bad 2CH Audio Bad 2CH Audio Bad SR5850D DM7912N...

Page 45: ...3 39 3 40 6 AV JACK CIRCUIT DIAGRAM All Video signal isn t appear or bad SR5850C DM7912N Video Signal Y Video Signal Color Video Signal CVBS 2CH Audio 2 5V not working...

Page 46: ...8 0 78 1 06 80 0 23 0 08 0 89 1 15 STOP PLAY STOP PLAY STOP PLAY STOP PLAY 0 08 0 16 3 28 3 29 5 52 5 49 5 09 5 08 1 82 0 45 3 28 3 28 5 52 5 48 2 43 2 42 2 84 0 0 1 65 5 51 5 47 5 09 5 08 2 83 3 12 1...

Page 47: ...44 203 0 1 43 204 0 1 43 205 0 1 42 206 0 2 1 207 0 2 07 208 0 1 41 209 0 1 52 210 0 1 43 211 0 2 81 212 0 3 28 213 0 0 12 214 0 0 12 215 1 02 1 43 216 0 1 43 STOP PLAY STOP PLAY STOPPLAYSTOP PLAY IC...

Page 48: ...3 45 3 46 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP SIDE LOCATION GUIDE...

Page 49: ...3 47 3 48 2 MAIN P C BOARD BOTTOM SIDE LOCATION GUIDE...

Page 50: ...3 49 3 50 3 KEY P C BOARD LOCATION GUIDE Solder Side Solder Side 4 TIMER P C BOARD LOCATION GUIDE...

Page 51: ...3 51 3 52 5 POWER P C BOARD LOCATION GUIDE Solder Side...

Page 52: ...y Up Down 4 3 3 1 PCB Assembly Junction 4 3 3 2 Base Assembly Sled Damper 4 3 3 2 1 Gear Assembly Feed 4 3 3 2 2 Gear Assembly Middle 4 3 3 2 3 Gear Assembly Rack 4 3 3 3 Rubber Damper 4 3 3 4 Frame U...

Page 53: ...Main Gear Up Down Gear Wheel Main Gear Loading Motor Assembly Main Base Main 3 Screws 2 Connectors 1 Hook 2 Locking Tabs 1 Screw 2 Locking Tabs 2 Screws 1 Connector 2 Screws 1 Screw 2 Screws 5 Connect...

Page 54: ...Magnet Clamp 1 3 Upper Clamp 1 4 Holder Clamp When reassembling hold and fix the Upper Clamp as above No 1 1 1 and then turn the Plate Clamp to the clockwise direction 2 Base Assembly Tray Fig 4 1 1 T...

Page 55: ...E UP DOWN BASE MAIN FRAME UP DOWN GEAR UP DOWN 3 Frame Assembly Up Down Fig 4 3 1 Release Screw S5 3 1 PCB Assembly Junction 1 Unconnect the 5 Connectors C5 C6 2 Release 2 Screws S6 3 2 Base Assembly...

Page 56: ...own Bottom Side 4 1 PCB Assembly Main Mode 1 Unconnect the Connectors C8 C9 2 Release three Screws S9 When reassembling align the Mode Switch position as Fig A Put the Base Assembly Main on original p...

Page 57: ......

Page 58: ...002 414 415 415 413 413 413 414 414 416 032 034 033 035 416 416 416 416 037 030 022 023 021 020 036 A01 A02 A04 038 416 005 005 024 039 039 434 040 040 434 008B 038A 022A 008A A00 014 014 430 014 014...

Page 59: ......

Page 60: ...CAP SKEW T DP7C 014B 4470R 0131A O GEAR PINION DP7C 014C 5006R 0043A O CAP SKEW DP7C 015 4470R 0130A O GEAR MIDDLE DP7C 015A 4471R 0013A O GEAR ASSEMBLY DECK MECHA RACK DP 7C 015B 4470R 0129A O GEAR...

Page 61: ...MAIN 261A 5040R 0069D O RUBBER FOOT SILICONE SPONGE DS 08 T 275 4930R 0351A O HOLDER DVD DM6000 BRACKET 280 3721R F300L O PANEL ASSEMBLY FRONT NORMAL PA DM7912NM HA1UZZ NSP NSP 283 3581R T067G O DOOR...

Page 62: ...M FM5 TP 5 C137 0CE3376D638 O CAPACITOR ELECTROLYTIC 330UF SMS 10V M FM5 TP5 C201 0CH1104K942 O CAPACITOR CHIP CERAMIC M L HD 0 1UF 50V Z Y5V F 1508 R TP C202 0CH1104K942 O CAPACITOR CHIP CERAMIC M L...

Page 63: ...C282 0CH1104K942 O CAPACITOR CHIP CERAMIC M L HD 0 1UF 50V Z Y5V F 1508 R TP C283 0CH1104K942 O CAPACITOR CHIP CERAMIC M L HD 0 1UF 50V Z Y5V F 1508 R TP C291 0CE1074F638 O CAPACITOR ELECTROLYTIC 100U...

Page 64: ...ERAMIC M L HD 0 1UF 50V Z Y5V F 1508 R TP C527 0CH1104K942 O CAPACITOR CHIP CERAMIC M L HD 0 1UF 50V Z Y5V F 1508 R TP C528 0CE4764F638 O CAPACITOR ELECTROLYTIC 47M SRA SS 16V M FM5 TP 5 C529 0CH1103K...

Page 65: ...SS50V M FM5 TP 5 C632 0CE1054K638 O CAPACITOR ELECTROLYTIC 1 0M SRA SS50V M FM5 TP 5 C633 0CH1104K942 O CAPACITOR CHIP CERAMIC M L HD 0 1UF 50V Z Y5V F 1508 R TP C634 0CE2264F638 O CAPACITOR ELECTROLY...

Page 66: ...IRE COPPER TIN COATED D 0 6 ROLL F105 874 000T O WIRE COPPER TIN COATED D 0 6 ROLL F501 6200JB8010V O FILTER CIRC EMC LFA20 2A1E473MT MITSUBISHI MAT F502 6200JB8010V O FILTER CIRC EMC LFA20 2A1E473MT...

Page 67: ...202 0TRRH80042A O TRANSISTOR BIPOLARS 2SK3018 T106 ROHM KOREA R TP U Q203 0TRRH80042A O TRANSISTOR BIPOLARS 2SK3018 T106 ROHM KOREA R TP U Q204 0TR150409AC O TRANSISTOR KTA1504 GR T1 ASG CHIP KEC Q205...

Page 68: ...RESISTOR METAL GLAZED CHIP 390K OHM 1 16 W 1608 5 00 D R216 0RH0101C622 O RESISTOR METAL GLAZED CHIP 1 OHM 1 16 W 1608 5 00 D R217 0RH0221C622 O RESISTOR METAL GLAZED CHIP 2 2 OHM 1 16 W 1608 5 00 D...

Page 69: ...8K OHM 1 16 W 1608 5 00 D R423 0RH8201C622 O RESISTOR METAL GLAZED CHIP 8 2K OHM 1 16 W 1608 5 00 D R424 0RH3300C622 O RESISTOR METAL GLAZED CHIP 330 OHM 1 16 W 1608 5 00 D R425 0RH3300C622 O RESISTO...

Page 70: ...HM 1 16 W 1608 5 00 D R625 0RH1002C622 O RESISTOR METAL GLAZED CHIP 10K OHM 1 16 W 1608 5 00 D R626 0RH1001C622 O RESISTOR METAL GLAZED CHIP 1K OHM 1 16 W 1608 5 00 D R627 0RH1001C622 O RESISTOR METAL...

Page 71: ...1001F608 O RESISTOR FIXED CARBON FILM 1K OHM 1 6 W 5 TA26 R944 0RD1002F608 O RESISTOR FIXED CARBON FILM 10K OHM 1 6 W 5 TA26 R991 0RD1001F608 O RESISTOR FIXED CARBON FILM 1K OHM 1 6 W 5 TA26 RC901 671...

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