Download
Share
Print this page
Zenith DVP7771 Manual
  1. Manuals
  2. Brands
  3. Zenith Manuals
  4. DVD Player
  5. DVP7771
  6. Manual

Zenith DVP7771 Manual

Hide thumbs Also See for DVP7771:

Advertisement

Quick Links

Download this manual
CONTENTS
SECTION 1 . . . . SUMMARY
SECTION 2 . . . . EXPLODED VIEWS
SECTION 3
. . . ELECTRICAL
SECTION 4
. . . REPLACEMENT PARTS LIST
1-1

Advertisement

loading

Related Manuals for Zenith DVP7771

Summary of Contents for Zenith DVP7771

  • Page 1 CONTENTS SECTION 1 ..SUMMARY SECTION 2 ..EXPLODED VIEWS SECTION 3 . . . ELECTRICAL SECTION 4 . . . REPLACEMENT PARTS LIST...
  • Page 2 SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS ........1-3 SAFETY CHECK AFTER SERVICING .................... 1-4 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 SAFETY CHECK AFTER SERVICING Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions. Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards. •...
  • Page 5 SPECIFICATIONS General ITEM SPECIFICATIONS DISC FORMAT DVD Disc: DVD VIDEO Specification Book. CD-DA Disc: RED Book. CD-R/RW Disc VIDEO SYSTEM PAL, NTSC DATA MULTIPLEXING MPEG-2(ISO/IEC 13818-1) VIDEO DECODING Standards MPEG-1, MPEG-2 AUDIO COMPRESSION Dolby Digital: ATSC Standard for ATV MPEG-1, MPEG-2 AUDIO DIGITAL I/F S/P DIF(IEC-1937/958) REGULATIONS...
  • Page 6 SECTION 2 EXPLODED VIEWS CONTENTS EXPLODED VIEWS ........................2-2 Cabinet and Main Frame Section ....................2-2 Deck Mechanism Section ......................2-3 Packing Accessory Section .......................2-4...

  • Page 7: Exploded Views

    EXPLODED VIEWS • Cabinet and Main Frame Section...

  • Page 8: Deck Mechanism Section

    • Deck Mechanism Section...

  • Page 9: Packing Accessory Section

    • Packing Accessory Section ADAPTER TUNER 813 S-VHS CABLE PLUG ASS'Y 2WAY BATTERY 814 PLUG ASS'Y OWNER'S MANUAL REMOCON R/C BATTERY PACKING SHEET PACKING PACKING BOX CARTONX OPTIONAL PARTS...
  • Page 10 SECTION 3 ELECTRICAL CONTENTS LCD PART ........................3-2 ELECTRICAL TROUBLE SHOOTING GUIDE ............3-17 BLCOK DIAGRAMS ....................3-26 CIRCUIT DIAGRAM ....................3-32 PRINTED CIRCUIT DIAGRAMS ................3-62...
  • Page 11 LCD PART How to adjust LCD COLOR 1) Connect CON 803, power apply, and then check DC power(DC 9.8V). (CE8G1: -15V, CE8F9: +17V, CE8F8: +7.5V, CE8F6: +5V, CE8F7: +3.3V) 2) VCO adjusting; Sync. adjusting 63.5uS 6.5Vp-p 2.5V * VR801 adjust 6.5Vp-p while viewing TP(VCOM)’s waveform, and VR815 adjust with 63.5us(center in display). 3) RGB-AMP adjusting;...
  • Page 12 * To set final settings, fit best display guality while viewing screen. • or, after inputting 5STEP signal, adjust as CONT adjusting as shown below.(COLER MAX) (VR803) (2.9V) (VR808)(2V) BRIGHT Black • adjust best results while viewing oscilloscope and Screen. 5) GAM0, GAM1 (GAM0: Black side, GAM1: White side) - Fixed(VR810, 811) * Input RAMP signal and view TP(G) waveform, deside that GAM0 is black side knee point and GAM1 iswhite- side knee point.
  • Page 13 7) TINT(VR805); Color Adjusting(3V±0.1) * Input COLOR BAR signal, view TP(B) waveform. • adjusts White, Cyun, Magenta, Blue Signal conformity. White Cyan Magenta Blue 3.5V 0.6V 8) BLK1(VR814), BLK2(VR813); SIDE BLOCK Adjusting - Fixed. • Input RAMP signal and SIDE1 S/W ON, view the TP(G) waveform. •...
  • Page 14 LCD TROUBLE SHOOTING GUIDE(1/2) appear shadow form interference in black background DESPLAY CONDITION? INVERTOR ABNORMAL There is only bright light.(LCD B/D abnormal) FUSE(F801)Normal? FUSE Replace Q8F1 Normal operate? IC8F1, IC8F2 Check and Replace T801, D8F1, D8F2, D8F3 Check 7.5V, 17V, -15V Normal? +5V, +3.3V Normal? IC8F3, IC8F4 Check and Replace Y/C Display signal?
  • Page 15 LCD TROUBLE SHOOTING GUIDE(2/2) IC805 Replace IC805’s CLK and CONT signal? LCD MODE CONT signal? MAIN B/D Check ALL “LOW”(NORMAL condition) TFT LCD pressure voltage? Power source and D803, D804 Check +17V, -15V, +5V, +3.3V Replace TFT LCD Normal? Color Adjusting Normal? Readjust as adjustement standard.
  • Page 16 LCD BLOCK DIAGRAM INVERTER...
  • Page 17 ELECTRICAL TROUBLE SHOOTING GUIDE 1. Power (DC-DC Converter) Circuit NO POWER ON NO POWER ON by ADAPTOR by BATTERY Is ADAPTOR Replace BATTERY Replace ADAPTOR Is BATTERY OK? OUT 9.8V? Replace F101 Is F101 OK? Is F901 OK? Replace F901 Replace LF101 Is LF101 OK? Replace D101...
  • Page 18 B. Audio Out abnormal C. Video Out abnormal VIDEO OUT ABNORMAL AUDIO OUT ABNORMAL Check Audio Jack & Check Video Jack & Mode S/W Mode S/W Check +12V, +5V_DAC Check Video signals from MPEG Check Signals from MPEG Check TR. Buffer (Q471,Q472,Q473) Replace Is Q401 OK ?
  • Page 19 F. Picture abnormal G. Disc Error DISC ERROR PICTURE ABNORMAL Check Disc Check the disc. YES (If OK) Refer to Servo part Refer to Servo part YES (If OK) If OK Check MPEG_CLK Signal Replace B/D of MPEG part YES (If OK) Check DSP YES (If OK) Check MPEG...
  • Page 20 2. MPEG Circuit Power is on Does Logo appear Check power & clock. on the screen? Does the Check CD/DVD DSP output moving picture of the DVD Disc Is MPEG data signal normal? play on the screen signal. normally? Check MPEG Decoder input signal.
  • Page 21 3. Front Circuit(Dogotrpm & Key) START Power on. when power S/W turn on, Check Power. LED ON? Is oscillation of X704 normal? Check waveform of Check waveform Is Digitron on normally? Replace IC702. IC701 Pin52, 54, 55, 56? of IC701 Pin 67.
  • Page 22 4. RF/Servo Circuit CHECK POINT(General) Does signal goes "High" to IC207 Pin 186 when the power is on? Does signal pulse input IC201 pin53, 54, when the power is on? Does Does Ic207 Pin67 signal Replace X201 or IC211 33.8688MHz clock input goes from high to 20W when the (33.8688MHz clock defect) to IC207 Pin59.
  • Page 23 No disc .Power on Check loading Part. Push Pick-up to inner track to Does tray open or close? the end by hand. Does DECK assembly is defective. CON203 Pin1 change (Limit sw) high to low? Pressing the open/close key check µ-COM Part. repeatedly, check the voltage of IC2M1 Pin17 change 0V to 5V...
  • Page 24 DISC IN OPEN/CLOSE Fig.3. FOCUS ERROR waveform Check Check IC2A1 Pin 11,12,13,14 the focus error moving the FOCUS ON? lens up and down. in DVD Mode (IC2A1 Pin 42) IC201 no output : Pick-up is defective. Does the TTL level change at IC207 Replace IC207.
  • Page 25 CHECK A Fig.5. RF waveform Check RF Eye-Pattern. No signal: Pick-up is defective Check IC2A1 Pins 5, 6, 7, 8. RF : 1.5-1.6V(IC2A1 Pin 57) Does the sawtooth waveform emit Is the eye-pattern vivid? Does the 1.6V emit? Replace IC2A1. at IC2A1 Pin 41? Replace IC207.
  • Page 26 BLOCK DIAGRAMS 1. OVERALL BLOCK DIAGRAM 3-26...
  • Page 27 2. POWER(DC-DC CONVERTER)BLOCK DIAGRAM 3-27...
  • Page 28 3. DVD-PLAYER RF/CD DSP/DVD DSP/DVD SERVO BLOCK DIAGRAM 3-28...
  • Page 29 4. AUDIO BLOCK DIAGRAM 3-29...
  • Page 30 5. VIDEO BLOCK DIAGRAM 3-30...
  • Page 31 6. DVD-PLAYER MPEG & MEMORY BLOCK DIAGRAM 3-31...
  • Page 32 MEMO...
  • Page 33 LCD CIRCUIT DIAGRAM LCD1 CIRCUIT DIAGRAM No power No power No power +3.3V Line dead No power +5V, +3.3V Line dead Not operate 2002. 02.01 R14121A...
  • Page 34 LCD2 CIRCUIT DIAGRAM Display abnormal(unstable) Color abnormal Speaker 2 Speaker 1 No Display(Black background) No display Side black abnormal Dimmig abnormal 2002. 02.01 R14119A Color abnormal Display abnormal(Black) 3-10 3-11...
  • Page 35 LCD3 CIRCUIT DIAGRAM Display unstable Display abnormal brightness abnormal Interface Line occur (Vcom abnormal) 2002. 02.01 R14120A Display unstable 3-12 3-13...
  • Page 36 LCD VOLTAGE SHEET IC801 IR3Y29BM PIN NO VOLT WAVEFORM PIN NO VOLT WAVEFORM Y signal(0.5) HD(0-3.3) Y signal(0.5) C signal(0.5) VD(0-3.3) HQ-OUT CLK(0.4) 0-2.8 CLK(0.4) 0-2.6 0-2.6 0-2.6 R(0.6-4.4) 0-2.6 G(0.6-4.4) 0-2.6 0-2.6 B(0.6-4.4) 0-2.6 CLK 0-2.6 CLK 0-2.6 CLK 0-2.6 HQ(0-2.6) HQ(0-2.6) SYNC(0-3.4)
  • Page 37 LCD P.C. BOARD LOCATION GUIDE LOCATION GUIDE 3-15 3-16...
  • Page 38 MEMO MEMO...
  • Page 39 CIRCUIT DIAGRAMS 1. POWER CIRCUIT DIAGRAM IC401 & 106 are defective E +5V is bad Q110 is defective E +5V is bad Q101 is defective +1.8V & +3.3 ard bad Q110 is defective E +5V is bad IC108 is defective +1.8V &...
  • Page 40 2. DRIVER CIRCUIT DIAGRAM Sled Not mone Tracking Sled Spindle 2002. 02.01 R14109A Focuse waveforms(page 3-58 ~ 3-59) 3-34 3-35...
  • Page 41 3. RF CIRCUIT DIAGRAM CD/DVD picture abnomal CD/DVD LD abnormal Tracking Focuse DVD LD abnormal DVD LD abnormal 2002. 02.01 R14110A waveforms(page 3-58 ~ 3-59) 3-36 3-37...
  • Page 42 4. DSP CIRCUIT DIAGRAM Spindle Motor abnormal MPEG Signal Tracking Sled DRAM control Spindle Focuse 2002. 02.01 R14111A Sled Servo Fail Tracking Servo Fail Focus Servo Fail 3-38 3-39...
  • Page 43 5. DRAM CIRCUIT DIAGRAM IC 212 is defective Scratched LD audio abnormal Q2A3 are defective NO focus Arocking Control Q2A2 are defective Q2A1 are defective CD LD will not be on DVD LD will not be on 2002. 02.01 R14112A 3-40 3-41...
  • Page 44 6. PANTER CIRCUIT DIAGRAM 2002. 02.01 R14113A waveforms(page 3-58 ~ 3-59) 3-42 3-43...
  • Page 45 7. MEMORY CIRCUIT DIAGRAM 2002. 02.01 R14114A 3-44 3-45...
  • Page 46 8. X-BUS CIRCUIT DIAGRAM Q501 is defective. Key S/W voltage abnormal. 2002. 02.01 R14115A 3-46 3-47...
  • Page 47 9. CPLD CIRCUIT DIAGRAM 2002. 02.01 R14116A 3-48 3-49...
  • Page 48 10. VIDEO CIRCUIT DIAGRAM Q471 is defective Y signal is bad Q472 is defective C signal is bad COMP Video S Video (Y) 2002. 02.01 R14117A S Video (C) 3-50 3-51...
  • Page 49 11. AUDIO CIRCUIT DIAGRAM IC402 is defective ICH Audio Out Bad IC401 is defective 2CH Audio out bad Q406 is defective IC413 is defective Optical out is bad ICH Audio IC403 is defective 2CH Audio out is bad IC414 is defective speakers &...
  • Page 50 12. FRONT CIRCUIT DIAGRAM System not operate System not operate Power not control 2002. 02.01 R14122A Q701 is defective key S/W voltage abnormal 3-54 3-55...
  • Page 51 13. REMOCON CIRCUIT DIAGRAM Remocon not operate. Q902 is defective. LED not operate 2002. 02.01 R14123A 3-56 3-57...
  • Page 52 WAVEFORMS Focus Search Case IC501 Pin 112, Chrominance (Super video out Mode) CH1. IC2A1 Pin42, Focus Error CH1. IC2A1 Pin42, Focus Error CH2. IC2M1 Pin21, Focus Drive CH2. IC2A1 Pin36, Pi Stop : 2.50MS/s 4 Acqs Disc Detection Case IC501 Pin 114, Luminance (Super video out Mode) CH1.
  • Page 53 CIRCUIT VOLTAGE CHART PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY 3.30 3.30 3.07 3.05 2.55 1.86 3.01 3.06 STOP PLAY SERVO SERVO...
  • Page 54 PRINTED CIRCUIT DIAGRAMS 1. MAIN P.C. BOARD LOCATION GUIDE LOCATION GUIDE 3-62 3-63...
  • Page 55 2. FRONT & KEY P. C. BOARD LOCATION GUIDE LOCATION GUIDE 3-64 3-65...
  • Page 56 MEMO MEMO...