Daewoo DR-C922B Servisní příručka

S/M No. : VCR9ADPEN0✔ Caution : In this Manual, some parts can be changed for improving, their perfor-mance without notice in the parts list. So, if y

8INSTRUMENT DISASSEMBLYFig. 1 - Legs RemovalFig. 2 Top Cover RemovalPerform all disassembly procedures in the order presented. When reassembling, use

98SCHEMATIC DIAGRAMPOWER SUPPLY SCHEMATIC DIAGRAM11+C91333uF 50VR7130.22 1W(Metal oxide)(OPEN)D91022R809-24V / 10mA2103 1KVC8033POWER DET390KR8021.3KF

SERVO & SYSCON SCHEMATIC DIAGRAM (DVD COMBO RECEIVER)99SCHEMATIC DIAGRAM

100SCHEMATIC DIAGRAMVIDEO/AUDIO SCHEMATIC DIAGRAM (DVD COMBO RECEIVER)

Hi-Fi & S/W & PIF & MPX SCHEMATIC DIAGRAM (DVD COMBO RECEIVER)101SCHEMATIC DIAGRAM

DIGITAL AUDIO/VIDEO SCHEMATIC DIAGRAM(DVD COMBO RECEIVER)102SCHEMATIC DIAGRAM

RECEIVER FRONT PART SCHEMATIC DIAGRAM103SCHEMATIC DIAGRAM

104SCHEMATIC DIAGRAMDIGITAL AMP SCHEMATIC DIAGRAM

HDD6HDD1HDD15HDD0HDD3HDD5HDD10HDD[0..15]HDD14HDD11HDD7HDD2HDD13HDD8HDD12HDD4HDD91+1+1+1234561+++1++1105SCHEMATIC DIAGRAMDVD SCHEMATIC DIAGRAM1. ATAPI

Memory Control SignalNOTE: L1 AND C41 ARE POPULATEDON LY WH EN A 3RD OVERTO NE XTALIS USED AT Y1.31MMBT2 222A25Pin Front Panel ConnectorMCKOMCKENCAS

107SCHEMATIC DIAGRAMDVD SCHEMATIC DIAGRAM3. Memory InterfaceOTHER 512K X 4 BANK X 32 BIT SDRAMS:MICRON: MT48LC2M32B1TG-8ESAMSUNG: KM432S2030B-8TOSHIB

9INSTRUMENT DISASSEMBLYFig. 5 . DECK & LOADER,POWER BOARD RemovalAfter releasing seven screws, Disassemble LOGIC PCB13After releasing six screws,

7 BIT I2CADDR ESS= 50SCLI2C SERIAL EEPROM256 BYTEHEAT SINK AREA FORU2 : FOR THE DEVICE,ALLOW 12MM SQCOPPER AREA ONLAYER 1. THAT ISCONNECTED TO THE&quo

109SCHEMATIC DIAGRAMDVD SCHEMATIC DIAGRAM5. VIDEO & AUDIO

110BLOCK DIAGRAMRECEIVER SERVO & SYSCON BLOCK DIAGRAM

111BLOCK DIAGRAMCOMBO RECEIVER VIDEO BLOCK DIAGRAM

NORMAL AUDIO BLOCK DIAGRAM112BLOCK DIAGRAM

113BLOCK DIAGRAMDRC6000N, DRC6000L Hi-Fi AUDIO BLOCK DIAGRAM REV.0 2002.09.03Hi-Fi & S/W & PIF BLOCK DIAGRAM

114BLOCK DIAGRAMDIGITAL AUDIO BLOCK DIAGRAM

AMP BLOCK DIAGRAM 115BLOCK DIAGRAM

MAIN PCB CIRCUIT BOARD(RTD300)116CIRCUIT BOARD INDEX

117CIRCUIT BOARD INDEXPOWER/LOGIC PCB CIRCUIT BOARD(RTD300)

10INSTRUMENT DISASSEMBLYFig. 6. Main Board RemovalFig. 7. Chassis Main RemovalRelease nine screwsAfter Releasing one screw, Disassemble MAIN PCBAfter

118CIRCUIT BOARD INDEXAMP PCB CIRCUIT BOARD(RTD300)

119ELECTRICAL PARTSLISTLOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARKZ800 97PD203300 PCB POWER MANUAL AS ICR 300DN AC85~265V 300W300 Watt PowerZ80

120ELECTRICAL PARTSLISTLOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARKC311 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 Main PCBC312 CEXF1C100A C EL

121ELECTRICAL PARTSLISTLOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARKCD30 CEXF1C100A C ELECTRO 16V RSM 10MF 5X7 Main PCBCD33 CEXF1C220A C ELECTRO

122ELECTRICAL PARTSLISTLOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARKL103 5CPX688K2T COIL PEAKING 0.68UH(BLU-SILV) Main PCBL104 5CPX101J2T COIL PE

123ELECTRICAL PARTSLISTLOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARKR205 HRFS273JBA R CHIP 1/16 27K OHM J 1608 Main PCBR206 HRFS821JBA R CHIP 1/

124ELECTRICAL PARTSLISTLOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARKR601 RD-AZ102J- R CARBON FILM 1/6 1K OHM J Main PCBR602 RD-AZ103J- R CARBON F

125ELECTRICAL PARTSLISTLOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARKRD56 HRFS103JBA R CHIP 1/16 10K OHM J 1608 Main PCBRD58 HRFS181JBA R CHIP 1/

126ELECTRICAL PARTSLISTLOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARKJP709 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING Front PCBJP710 85801065

127ELECTRICAL PARTSLISTLOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARKC254 HCFH104ZBA C CHIP CERA 25V Y5V 0.1MF Z 1608 AMP PCBC255 HCFH104ZBA C CHI

11INSTRUMENT DISASSEMBLY

128ELECTRICAL PARTSLISTLOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARKP200 97P62G08E7 CONN FFC GF102-07S-TS 07P ST AMP PCBP201 97P62G08EV CONN FFC

129ELECTRICAL PARTSLISTLOC PARTS_CODE PARTS_NAME PARTS_DESCRIPTION REMARKSP01 48A83084A2 SPEAKER SYSTEM HTWCFR-300BA2 300 WattSP01 48A83078A2 SPEAKER

686, AHYEON-DONG MAPO-GUSEOUL, KOREAC.P.O. BOX 8003 SEOUL, KOREADAEWOO ELECTRONICS Corp.

1.1 Characteristic of T6-DECK MECHANISM1) T6-MECHA follows the VHS and the NTSC standard.2) T6-MECHA uses 3 MOTORS (DRUM MOTOR, CAPSTAN MOTOR, L/C MO

1.2 WIRE DIAGRAM1.2.1 WIRE DIAGRAM13DESCRIPTION OF THE MECHANISM1.2.2 CONNECTOR PIN ARRANGEMENT

14ASSEMBLY DIAGRAM AND A/S2.1. ASSEMBLY DIAGRAM2.1.1. DECK ASSEMBLY DIAGRAMA. UPPER VIEW1 MAINBASE ASS Y2 DRUM ASS Y3 FE HEAD4 S SLANT POLE ASS Y5 TEN

15ASSEMBLY DIAGRAM AND A/SB. LOWER VIEW1 MAINBASE ASS Y2 DRUM ASS Y3 FE HEAD4 S SLANT POLE ASS Y5 TENSION BAND ASS Y6 S BRAKE ASS Y7 REEL TABLE8 REEL

16ASSEMBLY DIAGRAM AND A/S 2.1.2. FRONT LOADING ASSEMBLY DIAGRAM1 FL BRKT L2 TOP PLATE3 SAFETY LEVER4 LOADING LEVER AS45 CST HOLDER AS6 DOOR OPENER7 S

2.2 PERIODIC MAINTENANCE AND SERVICESCHEDULE2.2.1) Periodic maintenance and Service ScheduleA. In order to effectively maintain the excellent perform

CONTENTSPageNumberSPECIFICATIONS...1CLEANING AND LUBRICATION...

18ASSEMBLY DIAGRAM AND A/S 2.3 JIGS AND TOOLS2.1 LIST OF JIGS AND TOOLSFIG.NO ITEMS MODELN OREMARKSNTSC: SP MONOSCOPE 7KHz CHECKING OF THE1 ALIGNMENT

2..2 A SKECTCH OF JIGS AND TOOLS19ALIGNMENT TAPE!#%&CLEANING TAPE@30201001020303020100102030VHS SPINDLE HEIGHT GAUGE$^*

203. DISASSEMBLY AND REPLACEMENT3.1 REMOVAL OF THE FRONT LOADINGASSÕY (FIG. 3.1)a. Unscrew the 2 screw holding the F/L.b. Separate the F/L ASS‘Y from

21DISASSEMBLY AND REPLACEMENT c. Separate the LOADING LEVER ASS‘Y by pressing theconnection point from the CASSETTE HOLDERASS‘Y.(Fig. 3.3)d. Re

22DISASSEMBLY AND REPLACEMENT 3. 4. DISASSEMBLY OF LOADING RACK,LOADING ASSÕY, S/T SLANT POLEASSÕY(FIG. 3.6, 3.7)a. Turn out the DECK MECHANISM and re

23DISASSEMBLY AND REPLACEMENT 3. 6. DISASSEMBLY OF THE LC BRKTASSÕY, PINCH LEVER TOTAL ASSÕY(FIG. 3.9)a. Separate the LC BRKT Ass y @ after removing t

24DISASSEMBLY AND REPLACEMENT 3. 8 DISASSEMBLY OF THE S/T BRAKEASSÕY(FIG. 3.12)a. Unhook the S BRAKE SPRING # from the MAINBASE HOOK!.b. Remove the S

25DISASSEMBLY AND REPLACEMENT 3.12 DISASSEMBLY OF THE REEL TABLE,IDLER PLATE TOTAL ASSÕY (FIG. 3.15)a. Remove the POLY WASHER ! and separate the IDLER

26MECHANICAL ADJUSTMENT4. 1 MECHANICAL ADJUSTMENT (FIG.4.1~4.4)In case of diassembly and reassembly for fixng the mecanical prob-lem, check the follow

27MECHANICAL ADJUSTMENTd. Make sure that the triangular mark A of the L LOADING Ass yis aligned with the mark b of the R LOADING Ass y. (Fig. 4.4)

1SPECIFICATIONSCleaning and LubricationA. Cleaning the Tape Transport SystemThe following parts should be cleaned after every 500 hoursof use.• TENSIO

28MECHANICAL ADJUSTMENT 4. 3 MECHANICAL MODE (OPERATE WITH-OUT A CASSETTE TAPE)a. Remove the FRONT LOADING MECHANISM from the DECKMECHANISMb. Cap the

Generally, tape transporting section has been precisely adjusted in the factory and does not require the ordinary readjustment. But there isthe c

30ADJUSTMENT OF THE TAPE TRANSPORT SECTIONS/T GUIDE ROLLER HEIGHTADJUSTMENT•DRUM TOTAL AS •A/C HEAD AS •PINCH LEVER TOTAL AS S/T GUIDE ROLLER FLUNGE

31ADJUSTMENT OF THE TAPE TRANSPORT SECTION A. ADJUSTMENT OF THE S/T GUIDEROLLERA. Adjustment of the S/T GUIDE ROLLERa. Check the Playing back with a

F. PLAYBACK PHASE ADJUSTMENT(FIG.5.6)PHASE GENERATOR(PG) SHIFTER determine the VIDEO HEADSWITCHING POINT when the TAPE is played back. If an adjust-m

33ADJUSTMENT OF THE TAPE TRANSPORT SECTION H. ADJUSTMENT OF THE WAVE FORM OFDRUM ENTRANCE /EXIT (FIG. 5.8)a. Connect the PT01 on the MAIN CIRCUIT BO

34ADJUSTMENT OF THE TAPE TRANSPORT SECTION K. ADJUSTMENT OF THE AUDIO AZIMUTHa. Connect the AUDIO output JACK with an AUDIO LEVELMETER.b. Play back th

35EXPLODED VIEW 6.1 EXPLODED VIEW OF DECK ASSÕY ( TOP VIEW)

36EXPLODED VIEW6. 2 EXPLODED VIEW OF DECK ASSÕY ( BOTTOM VIEW)

37EXPLODED VIEW6.3 EXPLODED VIEW OF FL ASSÕY

2TEST EQUIPMENT REQUIREMENTSFIXTURE ITEM DESCRIPTION P/NPath Adj Fixture Use for X-position adjust/Tape path alignment 97PB396000Special Driver Use fo

38EXPLODED VIEWD0040D0040D0020D0050D0010D0060D0070

39EXPLODED VIEWREMARKPART NAMEN OQ’TYPART NO.MATERIAL

40ELECTRICAL ADJUSTMENTFig. 1 Main board test point/control location guide(component)

41ELECTRICAL ADJUSTMENTPG (Pulse Generator) Shifter Adjustment (Fig. 3)Test Points: PT01 PIN # MainVideo Out Jack Rear PanelAdjust: REC SWITCH MainTh

42WAVEFORMSVIDEO WAVEFORMS480462034

43WAVEFORMSAUDIO WAVEFORMSAUDIO(Normal)AUDIO(Hi-Fi)((IC301-76) 150mVp-p20mV/0.5msec/cmREC)(IC301-10) 1.5Vp-p0.5V/0.5msec/cmREC1(IC301-9) 2.3Vp-p0.5V/0

44WAVEFORMS24 25 26 2731302928SERVO WAVEFORMS

45WAVEFORMSAMP AUDIO WAVEFORMSAmp Micom(IC220)PIN#20(AMP CLK)Amp Micom(IC220)PIN#21(AMP CLK)MCLK DDX-8000 (IC200)PIN#20BCK DDX-8000(IC200) PIN#11LRCK

46VOLTAGE CHART1 4.2 4.2 4.2 4.2 4.2 4.2 4.22 4.5 4.5 4.5 4.5 4.5 4.5 4.53 4.5 4.5 4.5 4.5 4.5 4.5 4.54 4.0 4.0 4.0 4.0 4.0 4.0 4.0500000006 5.1 5.1 5

47VOLTAGE CHART87 3.9 2.5 2.5 2.5 2.5 3.8 3.988000000089000000090 1.4 1.4 1.4 1.4 1.4 1.4 1.491 2.6 2.6 2.6 2.6 2.6 2.6 2.692 2.6 2.6 2.6 2.6 2.6 2.6

3PATH FIXTURE CONNECTION/TEST POINT IDENTIFICATION1. Preparation for replacementa. Soldering IronUse a pencil-type soldering iron that uses less than

48VOLTAGE CHART3. IC DRIVER/SWITCH VOLTAGE CHARTS1 5.1 5.1 5.1 5.1 5.1 5.1 5.12 0 5.1 0 0 0 5.1 030055505455555555 2.3 2.3 2.3 2.3 2.3 2.3 2.36 4.9 4.

49VOLTAGE CHART4. VIDEO(LUMA/CHROMA) AND LINEAR AUDIO VOLTAGE CHARTS1 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2 2.4 3.0 2.4 2.4 2.4 2.4 2.4 3 2.4 2.4 2.4 2.4 2.4

50VOLTAGE CHART5. VIDEO SWITCHING IC VOLTAGE CHARTS1 1.8 1.8 1.8 1.8 1.8 1.8 1.82 1.9 1.9 1.9 1.9 1.9 1.9 1.932 2222224 1.9 1.9 1.9 1.9 1.9 1.9 1.950

51VOLTAGE CHART6. HIFI AUDIO IC VOLTAGE CHARTS1 2.5 2.5 2.5 2.5 2.5 2.5 2.52 00000003 2.5 2.5 2.5 2.5 2.5 2.5 2.54 00000005 2.2 2.2 2.2 2.2 2.2 2.2 2.

52VOLTAGE CHART* This can be measured in the only default and configuration 1 mode.8. TMI VOLTAGE CHART9 . IC CODEC CS4228 VOLTAGE CHART1 00000002

53VOLTAGE CHART10. AMP MI-COM VOLTAGE CHART(W78E58BP-42)1. DVD MODE2. EXTERNAL INPUT1) VCR MODE

54VOLTAGE CHART2) 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

55VOLTAGE CHART11. AMP DDX-8000 VOLTAGE CHART(DDX-8000)1. SPEAKER SETUP : Default, Configuration11) DVDMODEPINNO.IC DDX-8000(IC200)MODEPINNO.IC DDX-8

56VOLTAGE CHART1) EXTERNAL INPUT(1) VIDEO MODEMODEPINNO.IC DDX-8000(IC200)MODEPINNO.IC DDX-8000(IC200)2CH 5.1CH 2CH 5.1CHSTOP PLAYPLAYPAUSEMUTE STOP P

57VOLTAGE CHART(2) AM/FM MODEMODEPINNO.IC DDX-8000(IC200)MODEPINNO.IC DDX-8000(IC200)2CH 5.1CH 2CH 5.1CHAM FM AM FM AM FM AM FM1 0 0 0 0 33 5.1 5.1 5.

4PATH FIXTURE CONNECTION/TEST POINT IDENTIFICATION3. Installing the Leadless (chip) Component1) Presolder the contact points of the circuit board.2) P

58VOLTAGE CHART2. SPEAKER SETUP : Configuration 2 , 31) DVDMODEPINNO.IC DDX-8000(IC200)MODEPINNO.IC DDX-8000(IC200)2CH 5.1CH 2CH 5.1CHSTOP PLAYPLAYPAU

59VOLTAGE CHART2) EXTERNAL INPUT(1) VIDEO MODEMODEPINNO.IC DDX-8000(IC200)MODEPINNO.IC DDX-8000(IC200)2CH 5.1CH 2CH 5.1CHSTOP PLAYPLAYPAUSEMUTE STOP P

60VOLTAGE CHART(2) AM/FM MODEMODEPINNO.IC DDX-8000(IC200)MODEPINNO.IC DDX-8000(IC200)2CH 5.1CH 2CH 5.1CHAM FM AM FM AM FM AM FM1 0 0 0 0 33 5.1 0 5.1

61VOLTAGE CHARTMODEPINNO.DDX-2100(IC301)MODEPINNO.DDX-2100(IC301)2CH 5.1CH 2CH 5.1CHSTOP PLAYPLAYPAUSEMUTE STOP PLAYPLAYPAUSEMUTE STOP PLAYPLAYPAUSEMU

62VOLTAGE CHARTMODEPINNO.DDX-2100(IC360)MODEPINNO.DDX-2100(IC360)2CH 5.1CH 2CH 5.1CHSTOP PLAYPLAYPAUSEMUTE STOP PLAYPLAYPAUSEMUTE STOP PLAYPLAYPAUSEMU

63VOLTAGE CHARTMODEPINNO.DDX-2100(IC330)MODEPINNO.DDX-2100(IC330)2CH 5.1CH 2CH 5.1CHSTOP PLAYPLAYPAUSEMUTE STOP PLAYPLAYPAUSEMUTE STOP PLAYPLAYPAUSEMU

64VOLTAGE CHART(2) AM/FM MODEMODEPINNO.IC DDX-2100(IC301) MODEPINNO.IC DDX-2100(IC301)2CH 5.1CH 2CH 5.1CHAM FM AM FM AM FM AM FM1 0 0 0 0 19 0 0 0 02

65VOLTAGE CHARTMODEPINNO.IC DDX-2100(IC360) MODEPINNO.IC DDX-2100(IC360)2CH 5.1CH 2CH 5.1CHAM FM AM FM AM FM AM FM1 0 0 0 0 19 0 0 0 02 32.5 32.5 32.5

66VOLTAGE CHARTMODEPINNO.DDX-2100(IC330)MODEPINNO.DDX-2100(IC330)2CH 5.1CH 2CH 5.1CHSTOP PLAYPLAYPAUSEMUTE STOP PLAYPLAYPAUSEMUTE STOP PLAYPLAYPAUSEMU

67VOLTAGE CHART2) EXTERNAL INPUT(1) VIDEO MODEMODEPINNO.DDX-2100(IC301)MODEPINNO.DDX-2100(IC301)2CH 5.1CH 2CH 5.1CHSTOP PLAYPLAYPAUSEMUTE STOP PLAYPLA

5LEADLESS (CHIP) COMPONENT IDENTIFICATION1. Check the followings before S.M.D Troubleshooting• Cracked or Chipped Component Body• Cracked or Separated

68VOLTAGE CHARTMODEPINNO.DDX-2100(IC360)MODEPINNO.DDX-2100(IC360)2CH 5.1CH 2CH 5.1CHSTOP PLAYPLAYPAUSEMUTE STOP PLAYPLAYPAUSEMUTE STOP PLAYPLAYPAUSEMU

69VOLTAGE CHARTMODEPI N NO.ICDDX-2100(IC330) MODEPINNO.IC DDX-2100(IC330)2CH 5.1CH 2CH 5.1CHAM FM AM FM AM FM AM FM1 0 0 0 0 19 0 0 0 02 32.5 32.5 32.

70VOLTAGE CHARTIC SMPS/FET/PHOTO COUPLER/REGULATOR/TR VOLTAGE CHARTS1NCNCNCNCNCNC2 6 5.6 5.6 5.6 5.6 5.63 1.5 2.1 2.3 2.2 2.4 2.14 8.6mV 37mV 50mV 42m

71VOLTAGE CHART1 6.9 6.3 6.2 6.3 6.2 6.3205555530000004 0.6 5.1 5.1 5.1 5.1 5.1MODEIC REGULATOR(IC902) [V]PIN No.OFF PWR ON DVD PLAY DVDOFF DVD PLAY F

72TROUBLESHOOTINGPOWER CIRCUITCheck IC601, IC701.No powerPOWER cord is ok?Is 120~200V voltageobtained at C801+?Output voltage of 2ndparts is abnormal

73TROUBLESHOOTINGSYSTEM CIRCUITNo VFD display.Is 5V obtained at IC701 pin#13?Is -24V obtained at IC701pin#30?Oscillation at IC701 pin #8? Is -24V, -20

74TROUBLESHOOTINGNo power compensation.Voltage of power fail (IC601pin#100) at micom is 0.7V over?More than 3.2V is maintainedfor 1 minutes at IC601 p

75TROUBLESHOOTINGNoise appears on the Fullplayback screen.Are SW pulse and HA SWnormal?Recheck step C-1 (Badplayback quallty (1)).Check HEAD AMP conne

76TROUBLESHOOTINGCassette tape isn’tinserted.Is 5V voltage obtained atLoading parts IC601 pin#82?Is 13V voltage obtained atCapstan Motor pin#8?Check a

77TROUBLESHOOTINGG. DRUM Motor stopsH. CAPSTAN doesn’t rotateCAPSTAN doesn’t rotate.Is 14V voltage obtained at P603 pin#2?YESNONONOYESYESIs Capstan PW

6ABBREVIATIONSA A or AUD : AudioA.E. : Audio EraseAC : Alternating currentACC : Automatic Color ControlACS : Auto Clock SetAFC : Automatic Frequency C

78TROUBLESHOOTINGA. EE screen doesn’t appearEE screen doesn’t appear.Is video signal input atIC301 pin#28, 30, 32?Is 5V obtained at IC301pin#23, 44, 4

79TROUBLESHOOTINGB. Playback picture doesn’t appearYESYESIs Y signal output at IC301pin#35?Is Y signal input at IC301pin#39?Check and Replace IC301.Pl

80TROUBLESHOOTINGIs 5V obtained at IC301pin#68?NONOYESYESIs VIDEO SW Pulse input atIC301 pin#57?Is REC signal input at IC301pin#66,73?EP MODE: Pin #73

81TROUBLESHOOTINGNOIs power_on_H signal output atPJ601 pin#11.Change video mode.No Logo display. Do not opentrayIs video mode-S-Videomode?Is power sup

82TROUBLESHOOTING1. RCAA. No sound in E-E modeAUDIO CIRCUITNo sound in RF E-EmodeCheck Output JACK.A-1. TV E-ENOCheck IC601.Is Audio signal output at

83TROUBLESHOOTINGIC 12Vobtained atIC252 pin #16?YESCheck Output JACK.YESNOCheck IC601.No sound in LINE1 E-Emode.Is 12V obtained at IC251pin#58?NOIs 5V

84TROUBLESHOOTINGIC 12Vobtained atIC252 pin #16?YESCheck Output JACK.YESNOCheck IC601.No sound in LINE2 E-Emode.Is 12V obtained at IC251pin#58?NOIs 5V

85TROUBLESHOOTINGIC 12Vobtained atIC252 pin #16?YESCheck Output JACK.YESNOCheck IC601.No sound inLINE3(FRONT) E-E mode.Is 12V obtained at IC251pin#58?

86TROUBLESHOOTINGA-5. DVD E-EIs there reset at ICD01 #14?NONOYESYESIs 12V obtained at ICD02 #8?Are there signal at ICD02 #1, #7?Is 12V obtained at

87TROUBLESHOOTINGA-6. SUBWOOFER PRE-OUT E-EAre there clocks at ICD01 #5(BCLK),#6(LRCLK), #10(MCLK)?NONOYESYESIs there reset(H) at ICD01#14?Is 12V ob

7ABBREVIATIONSPIC : PicturePIF : Picture Intermediate FrequencyPLL : Phase Locked LoopPS : Phase ShiftPWM : Pulse Width ModulatorPWR : PowerQ Q : Tran

88TROUBLESHOOTINGIs there playback Audio signalat IC251 pin#53, 57?Are CLK and DATA obtainedat IC251 pin#42, 43?NOIs thereMUTE(H) at IC251pin#36?Check

89TROUBLESHOOTINGAre there Audio signalat IC251 pin#9,14#10, 15#2,4?Is there REC(H)at IC251 pin#29, 30?Check input LINE1 JACK.Check input LINE2 JACK.C

90TROUBLESHOOTINGD. No NORMAL AUDIO playback (PLAY MODE)Is Playback Audio signal atIC301 pin#10?Replace IC251.YESNONOIs there Playback Normal Audiosig

91TROUBLESHOOTINGE. No NORMAL AUDIO playback in record/playback mode(Check in REC mode)No Normal Audio playback inrecord/playback modeAre there Audio

92TROUBLESHOOTING2. HEADPHONEIs there reset(H) at ICD01 #14?NONOYESYESIs 12V obtained at ICD03 #8?Are there signals at ICD04#1, #7?Check DVD Board.C

93TROUBLESHOOTINGIs+3.3V obtained at IC200VDD_3.3? Is+2.5V obtained at IC200VDD_2.5?Is+3.3V obtained at the IBIASof IC301,IC330,IC360?Check power ci

94TROUBLESHOOTINGIs+5V obtained at IC220 #9,#35, #44? Is+3.3V obtained at IC200VDD_3.3?Is+2.5V obtained at the IC220VDD_2.5?Check power circuit.YESY

95TROUBLESHOOTINGThe protect takes place in theVFDAre the #4,#7,#12,#17 of IC301, IC330,IC360 connected tothe ground?Are the #2~3, #8~9,#10~11,#16~17

96TROUBLESHOOTINGIs +12V obtained at RF102 #3?When tunning play are therenormal PLL control signals atIC220 #3~#6?When tuned, is there ‘L’ atRF102 #1,

97TROUBLESHOOTINGYESCheck power circuit.NOAre there Voltage at ICD01#18(5V) #9(3.3V), #21(5V)?Check signal flow circuit.NOAre there normal audio sign