LG RH178H Service Manual
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LG RH178H, SALLOC A . NO. PART NO. DESCRIPTION SPECIFICATION REMARKS L1145 0RH0000D622 RESISTOR,METAL GLAZED(CHIP) 0 OHM 1 / 10 W 2012 5.00% D L1146 0RH0000D622 RESISTOR,METAL GLAZED(CHIP) 0 OHM 1 / 10 W 2012 5.00% D L1401 6200HJC102A FILTER(CIRC),EMC HB-1M2012-102JT CERATECH TP L1402 6200HJC102A FILTER(CIRC),EMC HB-1M2012-102JT CERATECH TP L1404 6200RJC003A FILTER(CIRC),EMC HB-1S1608-121 CERATECH TP L1405 6200RJC003A FILTER(CIRC),EMC HB-1S1608-121 CERATECH TP L1406 6200RJC003A FILTER(CIRC),EMC HB-1S1608-121 CERATECH TP L1407 6200RJC003A FILTER(CIRC),EMC HB-1S1608-1
LG RH178H, SAL LOCA.NO PART NO(LG) A B C DESCRIPTION SPECIFICATION REMARKS Q707 0TR387509AC O O TR,Bipolar KTC3875S-GR(ALG) NPN 5V 60V 50 R1501 0RH1002C622 O Resistor,Chip MCR03EZPJ103 10KOHM 5% 1/10W 1 R1503 0RH0000C622 O Resistor,Chip MCR03EZPJ000 0OHM 5% 1/10W 160 R1504 0RH0222C622 O Resistor,Chip MCR03EZPJ220 22OHM 5% 1/10W 16 R1505 0RH0222C622 O Resistor,Chip MCR03EZPJ220 22OHM 5% 1/10W 16 R1506 0RH0222C622 O Resistor,Chip MCR03EZPJ220 22OHM 5% 1/10W 16 R1507 0RH0222C622 O Resistor,Chip MCR03EZPJ220 22OHM 5% 1/10W 16 R1508 0RH0222C622 O Resistor,Chip MCR03EZPJ220 22OHM 5% 1/10W 16 R1509 0RH0222C622 O Resistor,C
LG RH178H, 3-79 3-80 ( TOP VIEW ) ( BOTTOM VIEW ) ( TOP VIEW ) ( 9TOOL ) ( BOTTOM VIEW ) 4. TIMER1 P.C.BOARD 5. TIMER2 P.C.BOARD ( 6, 7, 8 TOOL ) ( TOP VIEW ) ( BOTTOM VIEW ) ( TOP VIEW ) ( 6, 7, 8 TOOL ) ( 9TOOL ) ( 6, 7, 8 TOOL ) ( BOTTOM VIEW )
LG RH178H, 3-35 3-36 11. AUDIO S/W PATH BLOCK DIAGRAM 24(20) 27(23) 10(16) 25(21) 26(22) 8(14) 6(12) 1(7) 7 AO_DO 18(15) I/O BOARD SW4(7) SW5(8) SW6(3) IC801 NJM4580 (BUFFER) AV3 AV4 S1 S2 IC803 MM1443 AO_FSYNC AO_SCLK AO_MCLK AO_DO AO_FSYNC AO_SCLK AO_MCLK IC901 SAA7137 (AV. DEC) SIF SECAM_AM TU IC903,904 NJM2521 (AUDI O SW) IC808 CS4351 (CODEC ) DMN8653 MPEG , ENC/DEC MAIN BOARD OPTICAL COAXIA L RC CIRCUIT
LG RH178H, 1-3 NEW FUNCTIONS OF HDD/DVD-RECORDER • HDMI HDMI IS THE SPECIFICATION FOR THE HIGH-DEFINITION MULTIMEDIA INTERFACE. HDMI IS PROVID- ED FOR TRANSMITTING DIGITAL TELEVISION AUDIOVISUAL SIGNALS FROM HDD-DVD RECORDER TO TELEVISION SETS, OTHER VIDEO DISPLAYS. HDMI CAN CARRY HIGH QUALITY MULTI-CHANNEL AUDIO DATA AND CAN CARRY ALL STANDARD AND HIGH DEFINITION CONSUMER ELECTRONICS VIDEO FORMATS. CONTENT PROTECTION TECHNOLOGY IS AVAILABLE. HDMI CAN ALSO CARRY CONTROL AND STATUS INFORMATION IN BOTH DIRECTIONS. << OPERATING >&
LG RH178H, SALLOC A . NO. PART NO. DESCRIPTION SPECIFICATION REMARKS LR317 0RH2202C622 RESISTOR,METAL GLAZED(CHIP) 22K OHM 1 / 16 W 1608 5.00% D LR323 0RH0181D622 RESISTOR,METAL GLAZED(CHIP) 1.8 OHM 1 / 10 W 2012 5.00% D LR368 0RH1002C622 RESISTOR,METAL GLAZED(CHIP) 10K OHM 1 / 16 W 1608 5.00% D LR511 0RH0472C622 RESISTOR,METAL GLAZED(CHIP) 47 OHM 1 / 16 W 1608 5.00% D LR522 0RH1002C622 RESISTOR,METAL GLAZED(CHIP) 10K OHM 1 / 16 W 1608 5.00% D LR523 0RH1002C622 RESISTOR,METAL GLAZED(CHIP) 10K OHM 1 / 16 W 1608 5.00% D LPB271 6630B00077F CONNECT
4-31 INTERNAL STRUCTURE OF THE PICK-UP 1. BLOCK DIAGRAM OF THE PICK-UP(LPC-812R) 7 RF- SW EF3 C VC VCC D GND RF+ EF2 B A EF1 EF4 VREF VCC GND STB SW OUT NC CW CW CDO DVDO IN ENA E3 VCC SEL DVD_LD CD_LD VCC OSC NE4 E4 NE3 CXA2694N PD4CI CP0076AH 8 1 VC(PDIC) 2 VCC(PDIC) 3 GND(PDIC) 4 EF4 5 EF1 6 A 7 B 8 EF2 9 EF3 10 C 11 D 12 SW(PDIC) 13 RF+ 14 RF- 15 SW(FM) 16 VCC(FM) 17 GND(FM) 18 VREF(FM)
LG RH178H, SALLOC A . NO. PART NO. DESCRIPTION SPECIFICATION REMARKS 253 4810R-8002A BRACKET DVD RH1000 PRESS HDMI 468 1SZZR-0098J SCREW,DRAWING + 2 D3.0 L6.5 MSWR3/FZMCY-1 3 CABLE3 6850R-EA08V CABLE,FLAT P=0.5 FFC UL2896 SPECIAL 80 C- A54A 6871R-1877A PWB(PCB) ASSEMBLY,TOTAL HDMI ASSY (DI) RH1000 AR1701 0RRZVTA001F RESISTOR,DRAWING 33 OHM 1 / 16 W 3216 5% R/TP 8 AR1702 0RRZVTA001F RESISTOR,DRAWING 33 OHM 1 / 16 W 3216 5% R/TP 8 AR1703 0RRZVTA001F RESISTOR,DRAWING 33 OHM 1 / 16 W 3216 5% R/TP 8 AR1704 0RRZVTA001F RESISTOR,DRAWING 33 OHM 1 / 16 W 321
1-7 SPECIFICATIONS • GENERAL Power requirements AC 200-240V, 50/60 Hz Power consumption 35W Dimensions (approx.) 430 X 54 X 275 mm (w x h x d) without foot Mass (approx.) 4.1 kg Operating temperature 5°C to 35°C Operating humidity 5 % to 90 % Television system PAL I, B/G, I/I, SECAM D/K, K1 color system Recording format PAL • RECORDING Recording fo
LG RH178H, SALLOC A . NO. PART NO. DESCRIPTION SPECIFICATION REMARKS LC128 0CK105CC56A CAPACITOR,FIXED CERAMIC(HIGH D 1UF 1608 6.3V 10% R/TP X7R LC132 0CK105CC56A CAPACITOR,FIXED CERAMIC(HIGH D 1UF 1608 6.3V 10% R/TP X7R LC133 0CK105CC56A CAPACITOR,FIXED CERAMIC(HIGH D 1UF 1608 6.3V 10% R/TP X7R LC134 0CH1153K562 CAPACITOR,FIXED CERAMIC(TEMP.C 0.015UF 50V 10% X7R(X) 1608 R/ LC135 0CH4331K412 CAPACITOR,FIXED CERAMIC(HIGH D 330PF 50V 5% NP0 1608 R/TP LC136 0CH1153K562 CAPACITOR,FIXED CERAMIC(TEMP.C 0.015UF 50V 10% X7R(X) 1608 R/ LC137 0CH4331K412 CAPACITOR,FIXED CERAMIC(HIGH D 330PF 50V 5% NP0 1608 R/T
LG RH178H, 4-14 CD/DVD ? DVD CD Select Mode: CD, Test and perform Test from 4. LD Test of ‘How to use Test tool’ Select Mode: DVD, Test and perform Test from 4. LD Test of ‘How to use Test tool’ Check the input of CD/DVD. (pin 10 of LPM 101) Check the input of CD/DVD. (pin 10 of LPM101) Check the input of W1SET. (pin 12 of LPM101) Check the input of FPD. (pin 126 of LIC121) END E
3-1 SECTION 3 ELECTRICAL CONTENTS HDR PART ELECTRICAL TROUBLESHOOTING GUIDE ......................................................................................................................3-2 1. POWER SUPPLY ON SMPS BOARD...........................................................................................................................3-2 2. POWER SUPP
4-8 Track Servo is unstable Is TE signal output normal in Focusing ON and Tracking OFF? (LIC121 pin 24*) YES Check the PICK UP FFC. Replace the PICK UP. Replace the LIC121. NO Replace the LIC201. Check the Drive IC(LIC301) and P/U referring to “Focus Actuator operating is abnormal”. Is there TDRV signal output in Tracking ON? (LIC201 pin66) NO Is PICK UP (E, F, G, H) o
LG RH178H, SALLOC A . NO. PART NO. DESCRIPTION SPECIFICATION REMARKS C906 0CH1104K942 CAPACITOR,FIXED CERAMIC(TEMP.C 0.1UF 50V 80%,-20% Y5V(F) 1608 C907 0CH1104K942 CAPACITOR,FIXED CERAMIC(TEMP.C 0.1UF 50V 80%,-20% Y5V(F) 1608 C908 0CH1104K942 CAPACITOR,FIXED CERAMIC(TEMP.C 0.1UF 50V 80%,-20% Y5V(F) 1608 C909 0CH1104K942 CAPACITOR,FIXED CERAMIC(TEMP.C 0.1UF 50V 80%,-20% Y5V(F) 1608 IC901 0IPRPPY002A IC,PERIPHERALS PT6315 PTC 44 LQFP TRAY VFD DR L901 6140H-B003G INDUCTOR,CHIP NLC322522T-100K 10MH TDK L902
LG RH178H, 4-34 DESCRIPTION OF CIRCUIT 1. ALPC (AUTOMATIC LASER POWER CONTROL) CIRCUIT 1-1. BLOCK DIAGRAM 1-2. ALPC (AUTOMATIC LASER POWER CONTROL) CIRCUIT OPERATION THE ALPC BLOCK DETECTS THE LASER OUTPUT POWER OF THE FRONT MONITOR. THE POWER SIG- NAL DETECTED WITH THE PD FOR FRONT MONITOR DETECTION IS INPUT THE VOLTAGE FROM THE VPD PIN(123PIN) OR THE FPDM PIN(127PIN), THE REF- ERENCE SIGNAL OF THE INPUT SIGNAL IS INPUT FROM THE VREFPD PIN(124PIN). THE ALPC BLOCK GENERATES THE SINGALS FROM THE INPUT LASER POWER SIGNALS IN THE FOLLOWING DETECTION SYSTEMS. THIS BLOCK HAS FOUR DETECTION PATHS:ALL AVERAGE VALUE PATH, MULTI PULSE AVERAGE/PEAK VALUE DETECTION PATH, ERASE/BOTTOM VALUE DETECTION PAT
LG RH178H, 1-5 SERVICING PRECAUTIONS CAUTION : Before servicing the HDD/DVD Recorder cov- ered by this service data and its supplements and addends, read and follow the SAFETY PRECAUTIONS. NOTE : if unforeseen circumstances create conflict between the fol- lowing servicing precautions and any of the safety precau- tions in this publications, always follow the safety precau- tions. Remembers Safety First: General Servicing Precautions 1. Always unplug the HDD/DVD Recorder AC power cord from the AC power source before: (1) Removing or reinstalling any component, circuit board, module,
LG RH178H, 4-2 ELECTRICAL TROUBLESHOOTING GUIDE Are the pin 44 of LPB271+5V, pin41 of LPB271+12V respectively after the power cable connecting? Reset or Power Check. Check the power(5V/12V) short. Repair the SMPS Block Check the LIC401(3.3V regulator IC). Check the LIC201, LIC121. Does the pin #1 (Reset) of LIC271 change 0V to 3.3V at the power supply initial input mode? <Power> Is the pin 5 of LIC401 3.3V? <Reference> 1.65V(VREF) : Check pin113 of LIC121? 2.2V(HDVREF): Check pin78 of LIC121 NO NO YES YES YES YES Are the LX201 oscillating? Check the LX201(16.9MHz). Check the LIC201. NO Check the LIC401. NO Check the LIC121. NO Check it after connecting the power cable only
LG RH178H, 4-18 The format that records data through the creation of recorded marks by changing the organic dye material with a laser beam. [ Recording ] Recording is done by changing the organic dye layer and the substrate with a laser When a strong laser is applied to a disc, the temperature of the organic dye material goes up, the dye is decomposed and the substrate changes at the same time. At this time, a durable bit is created as is the case with a CD-ROM. [ Playback ] Signals are read with the differences of the reflection of a laser from pits. 2) Recording format using organic dye material ( DVD-R / DVD+R ) Disc structure Recording principles
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