Daewoo DR-C912B Service Manual Download Page 92

Page: 92 / 132

TROUBLESHOOTING

D. No NORMAL AUDIO playback (PLAY MODE)

Is Playback Audio signal at

IC301 pin#10?

Replace IC251.

YES

Is there Playback Normal Audio

signal at IC251 pin#53,57?

Check A/C HEAD and IC301

YES

Check Output JACK.

YES

Is there normal Audio signal

at IC251 pin#53, 57?

Check power circuit.

Voltage at IC251 pin#58 is

12V? Voltage at IC251 pin#40

and at IC301 pin#77 is 5V?

Summary of Contents for DR-C912B

Page 1: ...arts Price List in Service Information Center http svc dwe co kr DAEWOO ELECTRONICS Corp Jan 2004 http svc dwe co kr Service Manual DVD COMBO RECEIVER MODEL DR C912B 913B DR C922B 923B L R VCR REC DVD...

Page 2: ...51 AUDIO SWITCHING IC 51 TMI 52 IC CODEC CS4228 52 AMP MI COM 53 AMP DDX 8000 55 AMP DDX 2100 61 IC SMPS FET PHOTO COUPLER REGULATOR TR 70 TROUBLESHOOTING GUIDES POWER CIRCUIT 72 SYSTEM CIRCUIT 73 VI...

Page 3: ...re than 47k ohm under 80 Audio Output Impedance Less than 1 5k ohm Weight 6 45 kg NET VHF output 3 or 4 CH Playable tape Very high dense tapes with VHS marks Dimensions 430mm Wide X 91mm High Playable...

Page 4: ...Direct Probes Response DC 20MHz Sensitivity 5mV div Max Sweep Rate 0 1 sec div Frequency Counter 7 digits Sensitivity 25mV 5V Range 50Hz 100MHz DVM Range 0 1VDC 1000VD Accuracy 0 5 NTSC Video Signal...

Page 5: ...s is melted remove leadless component with a twist ing motion LEADLESS CHIP COMPONENT REMOVAL INSTRUCTION Note a Leadless component must not be reused after removal b Excessive mechanical stress and r...

Page 6: ...ecommended procedure 1 For removing solder chips from IC s pins use a solder remover or a wiry solder absorber 2 Heat the IC s tips evenly by moving the chip IC replacing tool around them and detach t...

Page 7: ...tion 1 Chip Resistor Identification Standard Chip Resistor Code 2 Chip Capacitor Identification There is no identification of chip capacitor REMARK Leadless CHIP Components are identified on schematic...

Page 8: ...ent CV Composite Video D D Drum Digital Diode Drain DC Direct Current DD DC DC Convert DEEM or DEEMPH Deemphasis DEMOD Demodulator DET Dectector DEV Deviation DFG Drum Frequency Generator DOC Dropout...

Page 9: ...SP Standard Play STB Strobe SVC Service SW or S W Switch or Switching Pulse SYNC Synchronization SYSCON System Control T TJ Test Jump TP Test Pin TR Transistor TRANS Transformer TRK Tracking TU Tuner...

Page 10: ...e the reverse procedure Make sure that all leads wiring are routed correctly when reassembling After Releasing two screws Disassemble LEG Release two screws Release two screws Release three screws Rel...

Page 11: ...er releasing seven screws Disassemble LOGIC PCB 1 3 After releasing six screws disassemble DECK After releasing four screws disassem ble LOADER After releasing four screws disassemble AMP PCB After re...

Page 12: ...10 INSTRUMENT DISASSEMBLY Fig 6 Main Board Removal Fig 7 Chassis Main Removal Release nine screws After Releasing one screw Disassemble MAIN PCB After releasing six Screws Disassemble MAIN CHASSIS...

Page 13: ...11 INSTRUMENT DISASSEMBLY...

Page 14: ...switch driven by the L C MOTOR 5 T6 MECHA has 7MODES EJECT INITIAL REV IDLE PLAY STOP SLOW BRAKE FF REW operation 6 T6 MECHA deduce the MODE changing time by adopting the full loading system which ma...

Page 15: ...1 2 WIRE DIAGRAM 1 2 1 WIRE DIAGRAM 13 DESCRIPTION OF THE MECHANISM 1 2 2 CONNECTOR PIN ARRANGEMENT...

Page 16: ...5 TENSION BAND ASS Y 6 S BRAKE ASS Y 7 REEL TABLE 8 REEL BRKT TOTAL ASS Y 9 IDLER PLATE TOTAL ASS Y 10 T BRAKE ASS Y 11 FL RACK 12 RELAY LEVER 13 CAPSTAN MOTOR 14 LC BRKT ASS Y 15 PINCH LEVER TOTAL AS...

Page 17: ...BRAKE ASS Y 7 REEL TABLE 8 REEL BRKT TOTAL ASS Y 9 IDLER PLATE TOTAL ASS Y 10 T BRAKE ASS Y 11 FL RACK 12 RELAY LEVER 13 CAPSTAN MOTOR 14 LC BRKT ASS Y 15 PINCH LEVER TOTAL ASS Y 16 CAM GEAR 17 AC HEA...

Page 18: ...16 ASSEMBLY DIAGRAM AND A S 2 1 2 FRONT LOADING ASSEMBLY DIAGRAM 1 FL BRKT L 2 TOP PLATE 3 SAFETY LEVER 4 LOADING LEVER AS4 5 CST HOLDER AS 6 DOOR OPENER 7 SAFETY LEVER R 8 FL BRKT R Fig 2...

Page 19: ...parts shoule be cleaned after every 500 hours of use TENSION POLE S SLANT POLE AC HEAD AE HEAD GUIDE POST VIDEOHEAD DRUM T GUIDE POST FE HEAD T SLANT POLE CAPSTASN SHAFT S GUIDE ROLLER T GUIDE ROLLER...

Page 20: ...APE DAEWOO TRANSPORTING SECTION 3 CASSETTE TAPE TORQUE KT 300NV MEASUREMENT OF THE METER KOKUSAI KT 300RV REEL TORQUE 4 VHS SPINDLE TSH V4 MEASUREMENT OF HEIGHT GAUGE REEL TABLE HEIGHT 5 TENTELO METER...

Page 21: ...2 2 A SKECTCH OF JIGS AND TOOLS 19 ALIGNMENT TAPE CLEANING TAPE 3 0 20 10 0 10 2 0 3 0 3 0 20 10 0 10 2 0 3 0 VHS SPINDLE HEIGHT GAUGE...

Page 22: ...OADING ASS Y FIG 3 2 3 5 a Remove the one WASHER for holding the door opener and separtate F L Assembly by moving the DOOR OPENER in the direction of arrow b Remove the 2 screw holding the TOP PLATE a...

Page 23: ...Y from the deck paying attention there is no damage on the surface of VIDEO HEAD and DRUM c Assembly step is the reverse way of diassembly CAUTION Assemble the FRONT LOADING ASS Y in the reverse step...

Page 24: ...Watch out that there is no damage in the HEAD connecting PIN b Separate the AC HEAD ASS Y after unscrewing thescrew CAUTION Take care GUIDE ROLLER of S T SLANT POLE AS and SLANT POLE not to be stained...

Page 25: ...m MAINBASE by moving to the arrow direction CAUTION After the assembly of the PINCH LEVER TOTAL Ass y adjust the tape transmission section by refering to the chapter 5 There should be no pollution on...

Page 26: ...CAPSTAN MOTOR FIG 3 13 a Separate the CAPSTAN MOTOR after the removal of 3 screws holding the capstan motor 3 11 DISASSEMBLY OF THE FE HEAD FIG 3 13 a Remove the screw and separate the FE HEAD from th...

Page 27: ...ing to the direction of the arrow CAUTION In diassembly of the REEL BRKT TOTAL ASS Y take care REEL BELT and REEL FELT not to be stained with GREASE OIL or foreign substance diassembly of the IDLER AS...

Page 28: ...re that the ending part A of the RELAY LEVER assem bled on the CONNECT PLATE is aligned with the reference hole B of the MAINBASE as shown in Fig 4 2 c The end point A of PINCH SPRINGPING of the LEVER...

Page 29: ...rting section is settled down in 20 seconds c Measure the BACK TENSION by using the TENTELO METER Refer Fig 4 5 The result should be within the range of 20g 30g d If the BACK TENSION is out of the ran...

Page 30: ...press the corresponding button d Turn off the poser when the Mechanism is in the desired posi tion 4 4 ADJUSTMENT OF THE POSITION OF THE TENSION POLE FIG 4 6 a Place the MECHANICAL MODE in the PLAY MO...

Page 31: ...e case that tape noise or impact on the deck mechanism tape transporting section readjustment is required In adjustment of the tape transmission section consut the following flow chart If any componen...

Page 32: ...AZIMUTHADJUSTMENT A C HEAD ADJUSTMENT X POSITION ADJUSTMENT PLAYBACKPHASEADJUSTMENT LINEARITY ADJUSTMENT DRUM ENTRANCE EXIT ENVELOPE FINE TUNING REVIEW PLAY CHANGING OPERATION CHECK AUDIO AZIMUTH ADJU...

Page 33: ...ETER c Turn the AC HEAD AZIMUTH SCREW until the maximum AUDIO output 9dBm 3dBm is obtained E Adjustment of the X POSITION Fig 5 4 5 5 a Connect the PATH ADJ FIXTURE to the PT01 on the MAIN CIRCUIT BOA...

Page 34: ...the PT01 on the MAIN CIRCUIT BOARD with a PATH ADJ FIXTURE b Play back an ALIGNMENT TAPE DN 2 MONOSCOPE Signal c Connect the FIXTURE S W PULSE TEST PIN on the PATH ADJ CHANNEL 1 SCOPE PROBE d Connect...

Page 35: ...mode about 15 second and alter the mode to PLAY MODE g Check whether the ENVELOPE waveform restore to its original form within 3 second when the REVIEW mode is changed to PLAY mode h If the requiremen...

Page 36: ...an ALIGNMENT TAPE DN 2 MONOSCOPE Signal c Connect the S W PULSE TEST PIN on the PATH ADJ FIX TURE with a CHANNEL 1 SCOPE PROBE d Connect the VIDEO OUT on the MAIN CIRCUIT BOARD with a CHANNEL 2 SCOPE...

Page 37: ...35 EXPLODED VIEW 6 1 EXPLODED VIEW OF DECK ASS Y TOP VIEW...

Page 38: ...36 EXPLODED VIEW 6 2 EXPLODED VIEW OF DECK ASS Y BOTTOM VIEW...

Page 39: ...37 EXPLODED VIEW 6 3 EXPLODED VIEW OF FL ASS Y...

Page 40: ...38 EXPLODED VIEW D0040 D0040 D0020 D0050 D0010 D0060 D0070...

Page 41: ...39 EXPLODED VIEW REMARK PART NAME N O Q TY PART NO MATERIAL...

Page 42: ...40 ELECTRICAL ADJUSTMENT Fig 1 Main board test point control location guide component...

Page 43: ...n alignment tape and play back the color bar signal or monoscope signal 2 Connect Path Fixture to PT01 3 Connect channel 1 scope probe 1V div 50 sec div to PT01 PIN Trigger the scope on channel 1 4 Co...

Page 44: ...42 WAVEFORMS VIDEO WAVEFORMS 480 4 6 20 34...

Page 45: ...9 2 3Vp p 0 5V 0 5msec cm REC 2 IC301 2 120mVp p 50mV 0 5msec cm PLAY 3 P201 2 75Vp p 10V 20 sec cm REC 4 IC251 10 80mVp p 20mV 0 5msec EE REC PLAY 5 IC251 19 200mVp p 50mV 0 5msec EE REC 6 IC251 21...

Page 46: ...44 WAVEFORMS 24 25 26 27 31 30 29 28 SERVO WAVEFORMS...

Page 47: ...8000 IC200 PIN 10 PCM0 downmix DDX 8000 IC200 PIN 6 PCM1 Front L R DDX 8000 IC200 PIN 9 PCM2 CEN SUB DDX 8000 IC200 PIN 7 PCM3 Rear L R DDX 8000 IC200 PIN 8 AMP Micom IC220 PIN 38 COMM_DO AMP Micom IC...

Page 48: ...C MI COM IC601 PIN No STOP REC PLAY REW REV FWD REC PLAY F FWD SEARCH PAUSE PAUSE 1 SERVO SYSCON TIMER MI COM 44 0 0 0 0 0 0 0 45 0 0 0 0 0 0 0 46 0 0 0 0 0 0 0 47 0 0 0 0 0 0 0 48 0 0 0 0 0 0 0 49 0...

Page 49: ...PIN No STOP REC PLAY REW REV FWD REC PLAY F FWD SEARCH PAUSE PAUSE 1 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 4 0 0 0 0 0 0 0 MODE IC EEPROM IC603 PIN No STOP REC PLAY REW REV FWD REC PLAY F FWD...

Page 50: ...26 26 26 26 26 26 MODE IC DRIVER IC701 PIN No STOP REC PLAY REW REV FWD REC PLAY F FWD SEARCH PAUSE PAUSE 23 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 25 24 24 24 24 24 24 24 26 24 24 24 24 24 24 2...

Page 51: ...6 1 6 40 0 0 0 0 0 0 0 0 0 0 0 0 0 0 MODE IC VIDEO AUDIO IC301 PIN No STOP REC PLAY REW REV FWD REC PLAY F FWD SEARCH PAUSE PAUSE 41 0 8 0 8 0 8 0 8 0 8 0 8 0 8 42 2 4 2 4 2 4 2 4 2 4 2 4 2 4 43 4 1 4...

Page 52: ...1 4 1 4 1 4 1 4 1 4 1 C 5 9 5 9 5 9 5 9 5 9 5 9 5 9 B 4 6 4 6 4 6 4 6 4 6 4 6 4 6 Q304 E 0 0 6 0 0 0 0 0 C 3 0 3 3 3 3 3 B 0 0 0 0 0 0 0 Q305 E 3 5 3 5 3 5 3 5 3 5 3 5 3 5 C 0 0 0 0 0 0 0 B 2 8 2 8 2...

Page 53: ...5 5 5 5 5 5 41 0 0 0 0 0 0 0 42 4 8 4 8 4 8 4 8 4 8 4 8 4 8 43 4 8 4 8 4 8 4 8 4 8 4 8 4 8 44 2 3 2 3 2 3 2 3 2 3 2 3 2 3 45 0 0 0 0 0 0 0 46 3 6 3 5 3 5 3 5 3 6 3 5 3 5 47 1 4 1 4 1 4 1 4 1 4 1 4 1 4...

Page 54: ...3 3 0 3 0 3 3 3 3 0 0 3 3 0 4 3 3 3 3 3 3 3 3 3 3 3 3 3 3 5 3 3 3 3 3 3 3 3 3 3 3 3 3 3 6 3 3 3 3 3 3 3 3 3 3 3 3 3 3 7 0 0 0 0 0 0 0 8 5 5 5 5 5 5 5 9 3 3 3 3 3 3 3 3 3 3 3 3 3 3 10 1 6 1 6 1 6 1 6...

Page 55: ...53 VOLTAGE CHART 10 AMP MI COM VOLTAGE CHART W78E58BP 42 1 DVD MODE 2 EXTERNAL INPUT 1 VCR MODE...

Page 56: ...CHART 2 AM FM MODE 1 It is changed according to the state of AM FM 2 It is changed according to the option resistances R205 R206 R207 R208 R209 Existing option resistances 0V No existing option resist...

Page 57: ...3 3 3 3 3 3 3 13 0 0 0 0 0 0 0 0 45 0 0 0 0 0 0 0 0 14 2 5 2 5 2 5 2 5 2 5 2 5 2 5 2 5 46 2 5 2 5 2 5 2 5 2 5 2 5 2 5 2 5 15 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 47 0 5 1 0 5 1 0 5 1 0 5 1 16 0 0 0 0 0 0 0...

Page 58: ...0 0 0 0 0 0 0 45 0 0 0 0 0 0 0 0 14 2 5 2 5 2 5 2 5 2 5 2 5 2 5 2 5 46 2 5 2 5 2 5 2 5 2 5 2 5 2 5 2 5 15 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 47 0 5 1 0 5 1 0 5 1 0 0 16 0 0 0 0 0 0 0 0 48 0 5 1 0 5 1 0 5...

Page 59: ...1 0 5 1 5 1 12 3 3 3 3 3 3 3 3 44 3 3 3 3 3 3 3 3 13 0 0 0 0 45 0 0 0 0 14 2 5 2 5 2 5 2 5 46 2 5 2 5 2 5 2 5 15 3 3 3 3 3 3 3 3 47 5 1 5 1 5 1 5 1 16 0 0 0 0 48 5 1 5 1 5 1 5 1 17 0 0 0 0 49 5 1 5 1...

Page 60: ...45 0 0 0 0 0 0 0 0 14 2 5 2 5 2 5 2 5 2 5 2 5 2 5 2 5 46 2 5 2 5 2 5 2 5 2 5 2 5 2 5 2 5 15 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 47 0 5 1 0 5 1 0 5 1 0 5 1 16 0 0 0 0 0 0 0 0 48 0 5 1 0 5 1 0 5 1 0 5 1 17...

Page 61: ...0 0 0 45 0 0 0 0 0 0 0 0 14 2 5 2 5 2 5 2 5 2 5 2 5 2 5 2 5 46 2 5 2 5 2 5 2 5 2 5 2 5 2 5 2 5 15 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 47 0 5 1 0 5 1 0 5 1 0 0 16 0 0 0 0 0 0 0 0 48 0 5 1 0 5 1 0 5 1 0 0 1...

Page 62: ...1 5 1 12 3 3 3 3 3 3 3 3 44 3 3 3 3 3 3 3 3 13 0 0 0 0 45 0 0 0 0 14 2 5 2 5 2 5 2 5 46 2 5 2 5 2 5 2 5 15 3 3 3 3 3 3 3 3 47 5 1 5 1 5 1 5 1 16 0 0 0 0 48 5 1 5 1 5 1 5 1 17 0 0 0 0 49 5 1 5 1 5 1 5...

Page 63: ...18 0 0 0 0 0 0 0 0 36 32 5 32 5 32 5 32 5 32 5 32 5 32 5 32 5 MODE PINNO DDX 2100 IC330 MODE PINNO DDX 2100 IC330 2CH 5 1CH 2CH 5 1CH STOP PLAY PLAY PAUSE MUTE STOP PLAY PLAY PAUSE MUTE STOP PLAY PLAY...

Page 64: ...5 32 5 32 5 32 5 32 5 32 5 32 5 32 5 18 0 0 0 0 0 0 0 0 36 32 5 32 5 32 5 32 5 32 5 32 5 32 5 32 5 MODE PINNO DDX 2100 IC301 MODE PINNO DDX 2100 IC301 2CH 5 1CH 2CH 5 1CH STOP PLAY PLAY PAUSE MUTE STO...

Page 65: ...0 32 5 0 0 35 32 5 32 5 32 5 32 5 32 5 32 5 32 5 32 5 18 0 0 0 0 0 0 0 0 36 32 5 32 5 32 5 32 5 32 5 32 5 32 5 32 5 MODE PINNO DDX 2100 IC360 MODE PINNO DDX 2100 IC360 2CH 5 1CH 2CH 5 1CH STOP PLAY P...

Page 66: ...5 32 5 34 25 25 25 25 17 32 5 0 32 5 32 5 35 32 5 32 5 32 5 32 5 18 0 0 0 0 36 32 5 32 5 32 5 32 5 MODE PIN NO ICDDX 2100 IC330 MODE PINNO IC DDX 2100 IC330 2CH 5 1CH 2CH 5 1CH AM FM AM FM AM FM AM FM...

Page 67: ...PAUSE MUTE STOP PLAY PLAY PAUSE MUTE STOP PLAY PLAY PAUSE MUTE 1 0 0 0 0 0 0 0 0 19 0 0 0 0 0 0 0 0 2 0 0 0 0 0 32 5 0 0 20 0 0 0 0 0 0 0 0 3 0 0 0 0 0 32 5 0 0 21 4 8 4 8 4 8 4 8 4 8 4 8 4 8 4 8 4 3...

Page 68: ...25 17 0 32 5 0 0 0 32 5 0 0 35 32 5 32 5 32 5 32 5 32 5 32 5 32 5 32 5 18 0 0 0 0 0 0 0 0 36 32 5 32 5 32 5 32 5 32 5 32 5 32 5 32 5 MODE PINNO DDX 2100 IC360 MODE PINNO DDX 2100 IC360 2CH 5 1CH 2CH 5...

Page 69: ...0 35 32 5 32 5 32 5 32 5 32 5 32 5 32 5 32 5 18 0 0 0 0 0 0 0 0 36 32 5 32 5 32 5 32 5 32 5 32 5 32 5 32 5 MODE PINNO DDX 2100 IC330 MODE PINNO DDX 2100 IC330 2CH 5 1CH 2CH 5 1CH STOP PLAY PLAY PAUSE...

Page 70: ...31 0 0 0 0 0 0 0 0 14 0 0 0 0 0 0 0 0 32 0 0 0 0 0 0 0 0 15 32 5 32 5 32 5 32 5 32 5 32 5 32 5 32 5 33 25 25 25 25 25 25 25 25 16 0 0 0 0 0 32 5 0 0 34 25 25 25 25 25 25 25 25 17 0 0 0 0 0 32 5 0 0 35...

Page 71: ...33 25 25 25 25 16 32 5 32 5 32 5 32 5 34 25 25 25 25 17 32 5 32 5 32 5 32 5 35 32 5 32 5 32 5 32 5 18 0 0 0 0 36 32 5 32 5 32 5 32 5 MODE PINNO IC DDX 2100 IC360 MODE PINNO IC DDX 2100 IC360 2CH 5 1CH...

Page 72: ...4 0 7 0 5 0 6 0 5 S 0 8mV 3 2mV 8mV 5mV 7mV 5mV MODE SWITCHING FET Q701 V PIN No OFF PWR ON DVD PLAY DVDOFF DVD PLAY FM AM VCR OFF VCR PLAY VCR REC D 140 128 116 118 112 125 G 1 5 2 5 2 6 2 5 2 9 2 5...

Page 73: ...3 3 S 0 2 3 4 3 4 3 4 3 4 3 4 MODE FET Q903 V PIN No OFF PWR ON DVD PLAY DVDOFF DVD PLAY FM AM VCR OFF VCR PLAY VCR REC C 0 13 4 12 7 13 1 12 6 13 4 B 14 3 12 7 12 12 4 11 9 12 7 E 14 3 13 4 12 8 13 1...

Page 74: ...rts D901 D903 D904 D905 D906 D907 D908 D909 R921 Switching pulse of Q801 drain Q701 drain is normal OK Exchange POWER CORD Check D801 TH801 F801 LX801 LX802 Exchange rectifier diode of 2nd parts D901...

Page 75: ...IC701 pin 8 Is 24V 20V obtained at F F Specific GRID SEG doesn t function Check D721 Check POWER circuit at 24V Check IC701 Check IC 701 pin 31 42 Check IC 701 pin 14 29 NO YES YES YES YES NO NO NO N...

Page 76: ...ears on the playback screen Is noise diminished by tracking adjustment Noise band is trembled up and down Re adjust PATH IstheheightofCTLHEADnormal Nodust Is there problem in CTL Input circuit and amp...

Page 77: ...se at IC601 pin 16 18 Check PCB Pattern Check IC601 C 2 Bad playback quality 2 No broadcasting signal received Is the output at IC601 pin 71 CLK 72 DATA normal Is SIF Video output at TMI RF101 pin 18...

Page 78: ...voltage obtained at Each parts of Loading Motor Replace Loading Motor Check D851 Main circuit E No CASSETTE Loading YES YES F AUTO STOP in Playback mode VCR stops automatically in playback mode Check...

Page 79: ...voltage obtained at P603 pin 9 Check P603 Connector and Capstan Motor Check 14V D905 C906 Check Capstan FG IC 601 87 Check R665 R664 R663 R666 C665 Check R661 R667 C664 DRUM Motor stops Is 13V voltag...

Page 80: ...61 71 72 NO YES YES YES NO NO NO Is 5V obtained at IC601 pin 53 98 99 YES Is signal input at IC401 pin 2 YES NO Check PCB pattern Is video signal output at IC301 pin 26 YES NO Check IC301 pin 24 QV s...

Page 81: ...Check EE mode and OSD circuit Check IC pin 61 71 72 Is 5V obtained at IC301 pin 68 Is 5V obtained at IC301 pin 23 44 45 68 Check power circuit Clean or Replace HEAD Check power circuit YES NO Does X30...

Page 82: ...at IC301 pin 28 30 32 Check POWER circuit Check IC601 pin 18 No recording Check EE MODE YES Is FM signal output at IC301 pin 14 Replace IC301 NO NO YES C No recording D No OSD On Screen Display appear...

Page 83: ...DVD loader PCB NO E No Logo Display or Do not open tray DVD YES YES Check IC 601 pin 29 and PCB pattern Is video signal input IC401 pin 1 Is video signal output at P101 pin 1 3 5 7 8 9 NO YES Check PO...

Page 84: ...ck IC601 Is Audio signal output at IC251 pin 53 57 Are CLK and DATA obtained at IC251 pin 42 43 NO Is 5V obtained at IC251 pin 40 Is there SIF signal at IC251 pin 48 in RF mode Check RF101 NO Replace...

Page 85: ...d at IC251 pin 40 Check POWER circuit YES NO Are CLK and DATA obtained at IC251 pin 42 43 Check Input LINE1 JACK Replace IC251 YES Is Audio signal output at IC251 pin 53 57 Is Audio signal at IC251 pi...

Page 86: ...d at IC251 pin 40 Check POWER circuit YES YES NO Are CLK and DATA obtained at IC251 pin 42 43 Check Input LINE2 JACK Replace IC251 YES Is Audio signal output at IC251 pin 53 57 Is Audio signal at IC25...

Page 87: ...d at IC251 pin 40 Check POWER circuit YES NO Are CLK and DATA obtained at IC251 pin 42 43 Check Input LINE3 JACK Replace IC251 YES Is Audio signal output at IC251 pin 53 57 Is Audio signal at IC251 pi...

Page 88: ...EE mode Are there voltage at ICD01 8 5V 9 3 3V 21 5V YES Are there clocks at ICD01 5 BCLK 6 LRCLK 10 MCLK Check ICD02 NO YES NO Check POWER circuit YES Is 5V obtained at IC251 40 YES Is audio signal...

Page 89: ...ined at ICD03 8 Are there signals at ICD03 1 Check Power circuit Check DVD Board NO sound Subwoofer pre out EE mode Is Speaker setup default or configuration1 YES Are there voltages at ICD01 8 5V 9 3...

Page 90: ...pin 36 Check IC601 YES Is A SW Signal input at IC251 pin 27 Check DRUM connector and DRUM NO Check A SW at IC601 pin 19 NO Replace IC251 YES NO Is 12V obtained at IC251 pin 58 Check Output JACK YES Y...

Page 91: ...1 pin 29 30 Check input LINE1 JACK Check input LINE2 JACK Check input LINE3 Front JACK Replace IC251 YES NO NO NO Is FM OSC signal at IC251 pin 21 Is FM OSC signal at P301 pin 2 Check IC601 pin 22 c N...

Page 92: ...n 10 Replace IC251 YES NO NO Is there Playback Normal Audio signal at IC251 pin 53 57 Check A C HEAD and IC301 YES Check Output JACK YES Is there normal Audio signal at IC251 pin 53 57 NO Check power...

Page 93: ...there recording signal at IC251 pin 61 Check Input LINE1 JACK Check Input LINE2 JACK Check input LINE3 Front JACK Check signal flow circuit YES NO NO NO Signal at IC251 pin 61 is transferred to IC301...

Page 94: ...d at ICD03 8 Are there signals at ICD04 1 7 Check DVD Board Check signal flow circuit NO sound in DVD or EXTERNAL mode Are there voltages at ICD01 8 5V 9 3 3V 21 5V YES Are there clocks at ICD01 5 BCL...

Page 95: ...Is 3 3V obtained at PWRDN of IC301IC330 IC360 YES No sound in the DVD MODE Is there H at IC220 25 Check Q201 Q202 Check IC301 IC330 IC360 and signal Flow circuit and replace inferior device NO Is ther...

Page 96: ...Is there L at IC220 10 YES YES Check IC601 and Data ports NO Is there normal 12MHz oscillation signal at IC220 20 21 Check X220 and replace inferior device NO Are there clocks at IC200 10 LRCLK 11 BC...

Page 97: ...at 26 TRI 27 Fault of IC301 IC330 IC360 Check IC301 IC330 IC360 and replace inferior device YES NO Is there H at IC220 25 YES Check Power circuit Is there H at IC220 10 NO Are there clocks at IC200 10...

Page 98: ...Check IC220 and communication withe IC601 YES YES Check power circuit NO Are there Voltage at ICD01 18 5V 9 3 3V 21 5V Check signal flow circuit NO Are there normal audio signals at ICD01 16 17 19 20...

Page 99: ...here normal audio signals at ICD01 16 17 19 20 YES No sound in External Video MODE Check DVD Board NO Are there clock at ICD01 5 BCLK 6 LRCLK 10 MCLK YES Check IC220 NO Are CLK and DATA obtained at IC...

Page 100: ...20 19 5V 14V 3 3M 1 2W R801 6 B802 3557 SD222MY1 250V AC CY803 LIVE C901 330uF 25V L902 22uH CAP 30K 2W R804 R708 18K R704 6 8 DV8T911N3A EER 42 4215 V SF3006PT D704 B701 3557 18 7 SF24 D905 1 UF4004...

Page 101: ...SERVO SYSCON SCHEMATIC DIAGRAM DVD COMBO RECEIVER 99 SCHEMATIC DIAGRAM...

Page 102: ...100 SCHEMATIC DIAGRAM VIDEO AUDIO SCHEMATIC DIAGRAM DVD COMBO RECEIVER...

Page 103: ...Hi Fi S W PIF MPX SCHEMATIC DIAGRAM DVD COMBO RECEIVER 101 SCHEMATIC DIAGRAM...

Page 104: ...DIGITAL AUDIO VIDEO SCHEMATIC DIAGRAM DVD COMBO RECEIVER 102 SCHEMATIC DIAGRAM...

Page 105: ...RECEIVER FRONT PART SCHEMATIC DIAGRAM 103 SCHEMATIC DIAGRAM...

Page 106: ...104 SCHEMATIC DIAGRAM DIGITAL AMP SCHEMATIC DIAGRAM...

Page 107: ...HDD6 HDD1 HDD15 HDD0 HDD3 HDD5 HDD10 HDD 0 15 HDD14 HDD11 HDD7 HDD2 HDD13 HDD8 HDD12 HDD4 HDD9 1 1 1 1 2 3 4 5 6 1 1 1 105 SCHEMATIC DIAGRAM DVD SCHEMATIC DIAGRAM 1 ATAPI I F...

Page 108: ...204 205 206 207 208 PLL_1V8 MA11 MA10 MA9 MD8 MD7 MD6 IO_G ND MD5 IO_3V3 MD4 MD3 MD2 MD1 D I G _1V8 MD0 DR_ CKE DIG_ GND IO_G ND DR_ CKO IO_3V3 GPIO1 GPIO2 GPIO3 GPIO4 GPIO5 NC1 NC2 NC3 NC4 NC5 NC6 N...

Page 109: ...5 27 29 31 33 35 37 39 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 51 53 54 55 56 52 57 58 59 60 41 43 45 47 49 44 46 48 50 42 GND0 A1 A3 A4 GND2 A7 A9 A10 A12 GND4 A15 A17 A18 A20 B3V3 GN...

Page 110: ...IN IR_DAT VFD_CLK VFD_STB VFD_DATOUT VCC GND DIG_1V8 GND GND GND GND GND GND GND DIG_3V3 VCC GND GND GND GND GND J3 1 2 3 R159 1K5 CN7 CON11 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 C128 0 1UF...

Page 111: ...109 SCHEMATIC DIAGRAM DVD SCHEMATIC DIAGRAM 5 VIDEO AUDIO...

Page 112: ...110 BLOCK DIAGRAM RECEIVER SERVO SYSCON BLOCK DIAGRAM...

Page 113: ...111 BLOCK DIAGRAM COMBO RECEIVER VIDEO BLOCK DIAGRAM...

Page 114: ...NORMAL AUDIO BLOCK DIAGRAM 112 BLOCK DIAGRAM...

Page 115: ...113 BLOCK DIAGRAM DRC6000N DRC6000L Hi Fi AUDIO BLOCK DIAGRAM REV 0 2002 09 03 Hi Fi S W PIF BLOCK DIAGRAM...

Page 116: ...114 BLOCK DIAGRAM DIGITAL AUDIO BLOCK DIAGRAM...

Page 117: ...AMP BLOCK DIAGRAM 115 BLOCK DIAGRAM...

Page 118: ...MAIN PCB CIRCUIT BOARD RTD300 116 CIRCUIT BOARD INDEX...

Page 119: ...117 CIRCUIT BOARD INDEX POWER LOGIC PCB CIRCUIT BOARD RTD300...

Page 120: ...118 CIRCUIT BOARD INDEX AMP PCB CIRCUIT BOARD RTD300...

Page 121: ...K1608 MainPCB LOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARK C251 HCFH104ZBA CCHIPCERA 25VY5V0 1MFZ1608 MainPCB C252 CEXF1C100A CELECTRO 16VRSM10MF5X7 MainPCB C253 CEXF1H479A CELECTRO 50VRSM4 7MF4...

Page 122: ...nPCB C626 HCFH104ZBA CCHIPCERA 25VY5V0 1MFZ1608 MainPCB C627 CBZP1C103M CCERASEMI 16VY5S0 01MFM AXIAL MainPCB LOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARK C628 HCQK130JBA CCHIPCERA 50VCH13PFJ160...

Page 123: ...D105A DZUZ7R5BSC DIODEZENER UZ 7 5BSC 7 33 7 64 MainPCB D106A DZN4148 DIODE 1N4148AUTO52MM MainPCB D107 DZUZ5R1BSB DIODEZENER UZ 5 1BSB 4 97 5 18V MainPCB D107A DZUZ7R5BSC DIODEZENER UZ 7 5BSC 7 33 7...

Page 124: ...AUTO 1015Y MainPCB Q105 TZTA1266Y TR KTA1266Y AUTO 1015Y MainPCB Q106 TZTA1266Y TR KTA1266Y AUTO 1015Y MainPCB Q107 TZTA1266Y TR KTA1266Y AUTO 1015Y MainPCB LOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTIO...

Page 125: ...RBONFILM 1 61KOHMJ MainPCB R283 HRFS102JBA RCHIP 1 16 1KOHMJ1608 MainPCB R285 RD AZ103J RCARBONFILM 1 610KOHMJ MainPCB LOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARK R288 RD AZ471J RCARBONFILM 1 6...

Page 126: ...610KOHMF MainPCB R666 RD AZ912J RCARBONFILM 1 69 1KOHMJ MainPCB R667 RD AZ473J RCARBONFILM 1 647KOHMJ MainPCB LOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARK R851 RD 4Z123J RCARBONFILM 1 412KOHMJ...

Page 127: ...LOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARK S604 97P0S02500 SENSORREEL RPI 303N MainPCB SW601 5SD0101100 SWDETE MXS00921MPC0 MainPCB SW651 5S10104100 SWMODE MMS00402ZMB0 MainPCB U001 97P65336M...

Page 128: ...R704 RD AZ103J RCARBONFILM 1 610KOHMJ FrontPCB R705 RD AZ103J RCARBONFILM 1 610KOHMJ FrontPCB R721 RD AZ102J RCARBONFILM 1 61KOHMJ FrontPCB R722 RD AZ301J RCARBONFILM 1 6300OHMJ FrontPCB R723 RD AZ30...

Page 129: ...0 1MFZ2012 AMPPCB C352 HCFH104ZBA CCHIPCERA 25VY5V0 1MFZ1608 AMPPCB C353 HCFH104ZBA CCHIPCERA 25VY5V0 1MFZ1608 AMPPCB C354 CMXL1J474J CMYLAR 63VMEU0 47MFJ AMPPCB LOC PARTS_CODE PARTS_NAME PARTS_DESCRI...

Page 130: ...RCHIP 1 16 6 8KOHMJ1608 AMPPCB R248 HRFS682JBA RCHIP 1 16 6 8KOHMJ1608 AMPPCB R249 HRFS472JBA RCHIP 1 16 4 7KOHMJ1608 AMPPCB LOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARK R298 HRFS243JBA RCHIP 1...

Page 131: ...K A3001 7274300811 SCREWTAPPTITE TT3RND3X8MFZN Deck AD001 97PA296001 DRUMPRICEAS CYN T610R Deck AD002 7003300511 SCREWMACHINE BIN3X5MFZN Deck AF001 97SA261070 F LAS TCE COMBO Deck AF002 7273300511 SCR...

Page 132: ...686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA DAEWOO ELECTRONICS Corp...

Search results

Summary of Contents for DR-C912B

Reviews:

Related manuals for DR-C912B

Brands by name

Popular brands

Daewoo DR-C912B, Service Manual

Search results

Summary of Contents for DR-C912B

Reviews:

Related manuals for DR-C912B

Brands by name

Popular brands