DAEWOO ELECTRONICS DR-C912B Service Manual Download Page 85

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TROUBLESHOOTING

IC 12V

obtained at

IC252 pin #16?

YES

Check Output JACK.

YES

Check IC601.

No sound in LINE1 E-E

mode.

Is 12V obtained at IC251

pin#58?

Is 5V obtained at IC251

pin#40?

Check POWER circuit.

YES

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

pin#10,15?

YES

Is there MUTE(H)

at IC251 pin#36?

A-2. LINE1 E-E

Is there H at

IC252 #9,

#10?

Is there at

signal IC252

#3, #13?

YES

Replace IC 252

YES

All manuals and user guides at all-guides.com

Summary of Contents for DR-C912B

Page 1: ...ion 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 P SCAN VCR DVD AM FM CH PRESET REC...

Page 2: ...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 VIDEO CIRCUIT 78 AUDIO CI...

Page 3: ...0 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 disc DVD VIDEO CD CD 1...

Page 4: ...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 Generator Must provide...

Page 5: ...less 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 rubbing of the compo nen...

Page 6: ...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 the IC s leads with a tool in the wa...

Page 7: ...entification Standard Chip Resistor Code 2 Chip Capacitor Identification There is no identification of chip capacitor REMARK Leadless CHIP Components are identified on schematic by means of C adjacent...

Page 8: ...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 Compensator DS Drain an...

Page 9: ...robe 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 U UHF Ultra High Freque...

Page 10: ...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 Release three tabs Disasse...

Page 11: ...le 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 releasing three screws disassemble PO...

Page 12: ...MBLY 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 All manuals and user gui...

Page 13: ...11 INSTRUMENT DISASSEMBLY All manuals and user guides at all guides com...

Page 14: ...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 maintains the tape windin...

Page 15: ...1 2 WIRE DIAGRAM 1 2 1 WIRE DIAGRAM 13 DESCRIPTION OF THE MECHANISM 1 2 2 CONNECTOR PIN ARRANGEMENT All manuals and user guides at all guides com...

Page 16: ...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 HEAD ASS Y 18...

Page 17: ...E 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 HEAD ASS Y 18 T SLANT POLE...

Page 18: ...AM 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 All manuals and user guides...

Page 19: ...d after every 500 hours of use TENSION POLE S SLANT POLE AC HEAD AE HEAD GUIDE POST VIDEOHEAD DRUM T GUIDE POST FEHEAD T SLANT POLE CAPSTASN SHAFT S GUIDE ROLLER T GUIDE ROLLER PINCH ROLLER Because th...

Page 20: ...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 T2 H7 UM MEASUREMENT O...

Page 21: ...2 2ASKECTCHOFJIGSANDTOOLS 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 All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 22: ...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 and separate the CASSETT...

Page 23: ...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 of diassembly Confirm...

Page 24: ...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 with grease during ass...

Page 25: ...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 the surface of PINCH RO...

Page 26: ...he 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 the MAINBASE CAUTION After the assemb...

Page 27: ...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 ASS Y should be precede t...

Page 28: ...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 TOTAL ASS Y should be...

Page 29: ...d 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 range change the position...

Page 30: ...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 MODE Refer to the above s...

Page 31: ...the deck mechanism tape transporting section readjustment is required In adjustment of the tape transmission section consut the following flow chart If any components shown in Fig 5 1 tape transport...

Page 32: ...EADADJUSTMENT X POSITIONADJUSTMENT PLAYBACKPHASEADJUSTMENT LINEARITY ADJUSTMENT DRUM ENTRANCE EXIT ENVELOPE FINE TUNING REVIEW PLAY CHANGING OPERATION CHECK AUDIO AZIMUTH ADJUSTMENT AUDIO OUTPUT CHECK...

Page 33: ...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 BOARD b Play back the ALIG...

Page 34: ...IRCUIT 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 the VIDEO OUT on the M...

Page 35: ...d 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 requirement of g is not satisfied...

Page 36: ...ignal 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 PROBE 1V div e Check if the ENVELO...

Page 37: ...35 EXPLODED VIEW 6 1 EXPLODED VIEW OF DECK ASS Y TOP VIEW All manuals and user guides at all guides com...

Page 38: ...36 EXPLODED VIEW 6 2 EXPLODED VIEW OF DECK ASS Y BOTTOM VIEW All manuals and user guides at all guides com...

Page 39: ...37 EXPLODED VIEW 6 3 EXPLODED VIEW OF FL ASS Y All manuals and user guides at all guides com...

Page 40: ...38 EXPLODED VIEW D0040 D0040 D0020 D0050 D0010 D0060 D0070 All manuals and user guides at all guides com...

Page 41: ...39 EXPLODED VIEW REMARK PART NAME N O Q TY PART NO MATERIAL All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 42: ...40 ELECTRICAL ADJUSTMENT Fig 1 Main board test point control location guide component All manuals and user guides at all guides com...

Page 43: ...ay 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 Connect channel 2 scope p...

Page 44: ...42 WAVEFORMS VIDEO WAVEFORMS 480 4 6 20 34 All manuals and user guides at all guides com...

Page 45: ...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 1 8Vp p 0 5V 1msec REC...

Page 46: ...44 WAVEFORMS 24 25 26 27 31 30 29 28 SERVO WAVEFORMS All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 47: ...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 IC220 PIN 39 COMM_DI AMP...

Page 48: ...TOP 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 0 0 0 0 0 0 50 1 9 1 9...

Page 49: ...EW 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 SEARCH PAUSE PAUSE 2 I...

Page 50: ...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 24 27 24 24 24 24 24 24...

Page 51: ...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 1 4 1 4 1 0 4 0 4 4 2 44 5 2 5 2 5...

Page 52: ...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 8 2 8 2 8 2 8 2 8 Q401...

Page 53: ...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 48 2 1 2 1 2 2 2 2 2 1...

Page 54: ...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 1 6 1 6 1 6 11 3 3 3 3...

Page 55: ...53 VOLTAGE CHART 10 AMP MI COM VOLTAGE CHART W78E58BP 42 1 DVD MODE 2 EXTERNAL INPUT 1 VCR MODE All manuals and user guides at all guides com...

Page 56: ...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 resistances 5 2V All manuals and user gui...

Page 57: ...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 0 48 0 5 1 0 5 1 0 5 1 0 5...

Page 58: ...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 17 0 0 0 0 0 0 0 0 49...

Page 59: ...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 1 18 3 3 3 3 3 3...

Page 60: ...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 0 0 0 0 0 0 0 0 49 0 5 1 0...

Page 61: ...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 17 0 0 0 0 0 0 0 0 49 0 5 1 0 5 1 0 5 1 0...

Page 62: ...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 1 18 3 3 3 3 3 3 3 3 50...

Page 63: ...2 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 PAUSE MUTE STOP PLAY P...

Page 64: ...2 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 STOP PLAY PLAY PAUSE MUTE...

Page 65: ...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 PLAY PAUSE MUTE STOP PLA...

Page 66: ...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 1 0 0 0 0 19 0 0 0 0 2 32 5 32 5 3...

Page 67: ...LAY 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 32 5 32 5 32 5 32 5 32 5...

Page 68: ...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 PLAY PAU...

Page 69: ...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 MUTE STOP PLAY PLAY PA...

Page 70: ...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 32 5 32 5 32 5 32 5 32...

Page 71: ...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 2CH 5 1CH AM FM AM FM AM FM AM FM...

Page 72: ...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 S 8 6mV 37mV 47mV 42mV...

Page 73: ...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 12 7 13 4 MODE TR Q901...

Page 74: ...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 D903 D904 D905 D906 D90...

Page 75: ...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 NO GRID output at PORT o...

Page 76: ...e diminished by tracking adjustment Noise band is trembled up and down Re adjust PATH IstheheightofCTLHEADnormal Nodust Is there problem in CTL Input circuit and amplifier YES NO NO NO Is there CTL pu...

Page 77: ...heck 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 20 normal Check IC 601...

Page 78: ...h 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 R656 C659 and P603 pin...

Page 79: ...03 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 voltage obtained at P603 pin...

Page 80: ...S 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 sync Is signal input at...

Page 81: ...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 X301 3 58MHz oscillate Check Pattern N...

Page 82: ...heck 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 appears VCR NO Is Video signa...

Page 83: ...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 POWER circuit YES NO Chec...

Page 84: ...l 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 IC251 YES YES YES Is 12...

Page 85: ...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 pin 10 15 YES Is there MU...

Page 86: ...it 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 IC251 pin 10 15 YES Is there MUTE H at...

Page 87: ...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 pin 10 15 YES Is there MU...

Page 88: ...age 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 at IC251 1 2 3 4 YES Ch...

Page 89: ...re 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 3V 21 5V Check signal f...

Page 90: ...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 YES YES B No Hi Fi playb...

Page 91: ...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 No Hi Fi playback in record playback...

Page 92: ...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 circuit NO Voltage at I...

Page 93: ...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 pin 76 78 80 Collect si...

Page 94: ...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 BCLK 6 LRCLK 10 MCLK NO YE...

Page 95: ...DN 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 there H at IC220 25 YES Is...

Page 96: ...ck 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 BCLK 20 MCLK and PCM Datum at IC200 6...

Page 97: ...C301 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 LRCLK 11 BCLK 20 MCLK...

Page 98: ...cation 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 YES No sound in the Rad...

Page 99: ...ls 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 ICD01 11 12 YES Check IC0...

Page 100: ...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 D901 PC701 L817B 24V HS...

Page 101: ...SERVO SYSCON SCHEMATIC DIAGRAM DVD COMBO RECEIVER 99 SCHEMATIC DIAGRAM All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 102: ...100 SCHEMATIC DIAGRAM VIDEO AUDIO SCHEMATIC DIAGRAM DVD COMBO RECEIVER All manuals and user guides at all guides com...

Page 103: ...Hi Fi S W PIF MPX SCHEMATIC DIAGRAM DVD COMBO RECEIVER 101 SCHEMATIC DIAGRAM All manuals and user guides at all guides com...

Page 104: ...DIGITAL AUDIO VIDEO SCHEMATIC DIAGRAM DVD COMBO RECEIVER 102 SCHEMATIC DIAGRAM All manuals and user guides at all guides com...

Page 105: ...RECEIVER FRONT PART SCHEMATIC DIAGRAM 103 SCHEMATIC DIAGRAM All manuals and user guides at all guides com...

Page 106: ...104 SCHEMATIC DIAGRAM DIGITAL AMP SCHEMATIC DIAGRAM All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 107: ...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 All manuals and user guides at all...

Page 108: ...1V8 MA11 MA10 MA9 MD8 MD7 MD6 IO_G ND MD5 IO_3V3 MD4 MD3 MD2 MD1 D I G _1V8 MD0 DR_ CKE DI G_ GND IO_G ND DR_ CKO IO_3V3 GPIO1 GPIO2 GPIO3 GPIO4 GPIO5 NC1 NC2 NC3 NC4 NC5 NC6 NC7 NC8 M_ BS D I G _1V8...

Page 109: ...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 GND7 D3V3 D1 D3 GND8 A0 A2...

Page 110: ...B 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 Q7 LT1117CST ADJ 3 1 4 2...

Page 111: ...109 SCHEMATIC DIAGRAM DVD SCHEMATIC DIAGRAM 5 VIDEO AUDIO All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 112: ...110 BLOCK DIAGRAM RECEIVERSERVO SYSCON BLOCK DIAGRAM All manuals and user guides at all guides com...

Page 113: ...111 BLOCK DIAGRAM COMBO RECEIVER VIDEO BLOCK DIAGRAM All manuals and user guides at all guides com...

Page 114: ...NORMAL AUDIO BLOCK DIAGRAM 112 BLOCK DIAGRAM All manuals and user guides at all guides com...

Page 115: ...113 BLOCK DIAGRAM DRC6000N DRC6000L Hi Fi AUDIO BLOCK DIAGRAM REV 0 2002 09 03 Hi Fi S W PIF BLOCK DIAGRAM All manuals and user guides at all guides com...

Page 116: ...114 BLOCK DIAGRAM DIGITAL AUDIO BLOCK DIAGRAM All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 117: ...AMP BLOCK DIAGRAM 115 BLOCK DIAGRAM All manuals and user guides at all guides com...

Page 118: ...MAIN PCB CIRCUIT BOARD RTD300 116 CIRCUIT BOARD INDEX All manuals and user guides at all guides com...

Page 119: ...117 CIRCUIT BOARD INDEX POWER LOGIC PCB CIRCUIT BOARD RTD300 All manuals and user guides at all guides com...

Page 120: ...118 CIRCUIT BOARD INDEX AMP PCB CIRCUIT BOARD RTD300 All manuals and user guides at all guides com...

Page 121: ...NAME PARTS_DESCRIPTION REMARK C251 HCFH104ZBA CCHIPCERA 25VY5V0 1MFZ1608 MainPCB C252 CEXF1C100A CELECTRO 16VRSM10MF5X7 MainPCB C253 CEXF1H479A CELECTRO 50VRSM4 7MF4X7 MainPCB C254 CEXF1C100A CELECTRO...

Page 122: ...HIPCERA 25VY5V0 1MFZ1608 MainPCB C627 CBZP1C103M CCERASEMI 16VY5S0 01MFM AXIAL MainPCB LOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARK C628 HCQK130JBA CCHIPCERA 50VCH13PFJ1608 MainPCB C629A HCQK101...

Page 123: ...ZENER 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 64 MainPCB LOC PARTS_C...

Page 124: ...5 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_DESCRIPTION REMARK Q201 TZTA1266Y...

Page 125: ...PCB 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 6470OHMJ MainPCB R289 RD...

Page 126: ...ARBONFILM 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 MainPCB R852 RD 4Z123J RCARBONFILM...

Page 127: ...AME PARTS_DESCRIPTION REMARK S604 97P0S02500 SENSORREEL RPI 303N MainPCB SW601 5SD0101100 SWDETE MXS00921MPC0 MainPCB SW651 5S10104100 SWMODE MMS00402ZMB0 MainPCB U001 97P65336MA PCBMAIN 330X246X1 6T...

Page 128: ...FILM 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 AZ301J RCARBONFILM 1 6300OH...

Page 129: ...HCFH104ZBA CCHIPCERA 25VY5V0 1MFZ1608 AMPPCB C353 HCFH104ZBA CCHIPCERA 25VY5V0 1MFZ1608 AMPPCB C354 CMXL1J474J CMYLAR 63VMEU0 47MFJ AMPPCB LOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARK C360 CEXF1...

Page 130: ...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 16 24KOHMJ1608 AMPPCB R...

Page 131: ...3RND3X8MFZN Deck AD001 97PA296001 DRUMPRICEAS CYN T610R Deck AD002 7003300511 SCREWMACHINE BIN3X5MFZN Deck AF001 97SA261070 F LAS TCE COMBO Deck AF002 7273300511 SCREWTAPPTITE TT3BIN3X5MFZN Deck B0610...

Page 132: ...686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA DAEWOO ELECTRONICS Corp All manuals and user guides at all guides com...

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DAEWOO ELECTRONICS DR-C912B, Service Manual

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