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LG LRM-519 DIGITAL MEDIA RECORDER SERVICE MANUAL SERVICE MANUAL MODEL : LRM-519(RV7922M) CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. P/NO : 3829RVN004L AUGUST, 2005...
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS IMPORTANT SAFETY NOTICE A.C. Voltmeter This manual was prepared for use only by properly trained audio-video service technicians. When servicing this product, under no circumstances should the original design be modified or altered without permission from Zenith Electronics Corporation.
SERVICING PRECAUTIONS CAUTION: Before servicing the HD/SD PERSONAL VIDEO Electrostatically Sensitive (ES) Devices RECORDER & RECEIVER WITH GEMSTAR covered by Some semiconductor (solid state) devices can be damaged this service data and its supplements and addends, read and easily by static electricity. Such components commonly are follow the SAFETY PRECAUTIONS.
INTRODUCTION - MSDVR & DVD Recorder receives the analog NTSC or cable broadcasting and compresses the audio and video file into the MPEG format to save on HDD or record on DVD. It supports the additional service of EPG (Electronics Program Guide) provided from MS. - Configuration For the CPU, Intel Celeron 733 of x86 is used and for peripheral chips, CPU I/F, Memory I/F and North Bridge and system parts for the North Bridge part that supports PCI I/F, IDE I/F serial I/F and USB I/F for...
SYSTEM S/W UPGRADE 1. ON-LINE S/W UPGRADE METHOD - The software can be upgraded by connecting with Ethernet or MODEM. Main Menu -> settings -> guide set-up -> ??? The softwares that can be upgraded online are as follows. - Main S/W - Bootloader - DVD Firmware 2.
TEST S/W 1. TEST METHOD USING THE DEBUG BOARD There are two test methods when there is an issue with the main board. When it is not properly booted and the composite video is not displayed, you can check the status of the board using the Debug Board for debugging prepared in the Debug port of the main board.
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BOOTLOADER ERROR/STATUS CODE Code Name Interpretation/Description 0x30 System Bus Frequency During L2 cache initialization, the processor is running at a faster or Mismatch slower bus frequency than it is designed for. This is a fatal error, and the processor will be halted. Detected during cache initialization. 0x31 No Memory Detected No memory was detected during the memory initialization.
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2. BOARD TEST METHOD USING THE JIG SET Diagram of JIG test composition For the JIG set, use the RV7922M set excluding the main board and HDD. When using the set for JIG, you must use the Debug Board. You must use the HDD for JIG. Power DVD Loader Main Board...
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SECTION 2 CABINET & MAIN CHASSIS CONTENTS EXPLODED VIEWS ........................2-2 1. Cabinet and Main Frame Section ...................2-2 2. Deck Mechanism Section(RL-05) ...................2-3...
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EXPLODED VIEWS 1. CABINET AND MAIN FRAME SECTION...
VFD OK Connection OK connect Front Power Cable Front power cable Connection OK connect Display Cable Display Cable “LG logo” display on Monitor OK Connection OK Connect Display Port Proper display port Selection (S800) OK select “CH No. & DATE”...
2. SYSTEM PART CIRCUIT Power Cable Connection Power on “LG logo” display Check soldering LED801 “ON” OK on Monitor OK state of Board IC900 (1-Pin) +12V J900 Connector C919 +1.25V OK Power Cable Check system function IC900 change Q909 (2-Pin) C930 +1.15V OK...
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IC302(74-pin) IC302(63-pin) IC302 change High=+3.3V OK High=+3.3V OK Check IC104 IC300(24-pin) R326 Re-soldering High=+3.3V OK HDD Cables HDD Cables Connection OK Re-connection IC302(64-pin) R377, J302 High=+3.3V OK Re-soldering Change HDD...
3. VIDEO PART-1 No display IC501(53-pin) IC302(73-pin) IC302 change ‘3.3V’= high OK ‘3.3V’=high OK R373 Re-soldering IC501(63-pin) OSC500(3-pin) OSC500 change 27MHz clock in OK 27MHz clock out OK R508 Re-soldering IC501(51,54-pin) IC103 check Clock in OK IC501(44,45-pin) Q504,Q505, R532 ~ Re-soldering I2C BUS OK R535 soldering OK...
4. YPBPR VIDEO OUTPUT TROUBLESHOOTING No display Video Cable Cable connect connection OK S800 setting 480i S800 status OK or 480p IC510(3,5-pin) Video IC509(3-pin) Video Video Part-1 check Video Part-1 check signal input OK signal input OK IC509,510 (8-pin) IC803 (4-pin) Q815, R881 ~ 883, +5V OK Under +2.5V OK...
5. S-VIDEO VIDEO OUTPUT TROUBLESHOOTING No display Video Cable Cable connect connection OK S800 status OK S800 setting CVBS IC508(3,5-pin) Video Video Part-1 check signal input OK IC508 (8-pin) +5V IC803 (4-pin) Q815, R881~883, Under +2.5V OK R839 Check IC803 Check IC508 (4-pin) -5V J900 (3-pin) check IC508(1,7-pin) Video...
6. CVBS VIDEO OUTPUT TROUBLESHOOTING No display Video Cable Cable connect connection OK S800 setting CVBS S800 status OK or 480i IC509(5-pin) Video Video Part-1 check signal input OK IC509 (8-pin) +5V IC803 (4-pin) Q815, R881~883, Under +2.5V OK R839 Check IC803 Check IC509 (4-pin) -5V J900 (3-pin) check...
7. AUDIO TROUBLESHOOTING Audio output problem IC500 (11-pin) IC104 Soldering High = “1” OK Check IC500 (5, 6, 10-pin) Clock System part check / Data / Sync Input Check IC500 (2, 3-pin) 24.576MHz IC500 (1, 9-pin) J900 Connector clock In/Out OK +3.3V out OK Power Cable Check IC500 (25, 38-pin)
9. ETHERNET TROUBLESHOOTING Ethernet problem Network Cable Network Cable Connection OK Connect Network Setup MAC Address Forwarding Factory Check OK Check OK Network Re-Setup IC308 (60, 61-pin) 25 IC905 (2, 4-pin) IC905 (3-pin) J900 Connector MHz Clock In/Out OK +3.3V out OK +5.0V out OK Power Cable Check IC308 (51, 96-pin)
11. DVD TROUBLESHOOTING DVD problem DVD Loader J902 Connector Power-On OK Power Cable Check DVD Tray Open/ Front Panel Open/ Front Panel Check Close Check OK Close Key Check OK J303 Connector FFC Cable Check DVD Auto-Loading DVD Region Code DVD Disc Check Check OK DVD Problem...
12. IR BLASTER TROUBLESHOOTING IR Blaster Problem Setting IR Blaster Configuration R859 IR Signal J804(2-pin) “FLD_ Check IC302 & Present OK CLK” Present OK Re-soldering J804(4-pin) “FLD_ RXD” Present OK IR Blaster J804(3-pin) “FLD_ Operation OK TXD” Present OK Change Front-Board 3-14...
13. SERIAL (RS-232) TROUBLESHOOTING Serial (RS-232) Problem Serial Cable Serial Cable Connection OK Connect IC805(16-pin) +5V J900 Connector Input OK Power Cable Check J805(11-pin) “TX Check IC302 & Data” Present OK Re-soldering J805(14-pin) “TX Check IC805 & Data” Present OK Re-soldering J805(13-pin) “RX”...
2. Voltages are DC-measured with a digital voltmeter MODIFIED OR ALTERED WITHOUT PERMISSION IMPLEMENTATION OF THE LATEST SAFETY AND during Play mode. FROM THE LG ELECTRONICS CORPORATION. ALL PERFORMANCE IMPROVEMENT CHANGES INTO COMPONENTS SHOULD BE REPLACED ONLY WITH THE SET IS NOT DELAYED UNTIL THE NEW SERVICE TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIR- LITERATURE IS PRINTED.
ELECTRICAL TROUBLESHOOTING GUIDE Reset or Power Check. Check it after connecting the power cable only for NO Reset or Power ON. •Check the power(5V,12V)short. Are the pin 4, 1 of LCN202 •Check the power cable. +12V, +5V respectively after the power •Repair the power part.
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System Check Load tray without inserting disc. Does tray operate normally? Go to “Tray operating is abnormal” Does pick-up move to inside? Go to “Sled operating is abnormal” Go to “Focus Actuator operating is Does pick-up lens move abnormal” up/down? Go to “Laser operating is abnormal”...
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Tray operating is abnormal Tray open doesn ’t work. Is the Input voltage 0V at LIC301 •Check the connection of LIC301 pin 106. pin 60 when push the •Replace the EJECT SW. EJECT SW? Is there tray •Replace the LIC502. control signal input? •Check the communication line between (LIC502 pin46)
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Sled operating is abnormal Is there sled control signal output? Replace the LIC301 (LIC301 pin 126, 127) Is there •Replace the IC102. sled drive signal input? •Check the LR532, LR533. (LIC502 pin 29, 30) Is there Is DRV-CTRL1 sled drive voltage output? signal “H”? (LIC502 pin 37~40) (LIC502 pin35)
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Spindle operating is abnormal Is there Is there spindle control DSP spindle control signal input? output(LIC301 pin 123)? (LIC502 pin 26) •Replace the LIC301 Replace the LIC301. Is there Is there spindle drive voltage output? SFG signal input? (LIC502 pin 11,13,16) (LIC301 pin 53) Replace the Spindle Motor •Replace the LIC102.
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Focus Servo is unstable Is FE signal output normal in Focusing Replace the LIC201. Up/Down? (LIC201 pin 87) Is FDRV signal output normal in Focusing •Check the R534. Up/Down? •Replace the LIC201. (LIC301 pin 124) Go to “Focus Actuator operating is abnormal” Focus Actuator operating is abnormal.
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Track Servo is unstable Is TE signal Is pick-up output normal in focusing (E, F, G, H)output normal? ON and tracking OFF? (LCN201 pin 5, 8, 9, 12) (LIC201 pin 85) Replace the LIC201. •Check the pick-up FFC. •Replace the pick-up. •After replacing Perform 5.
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Recognition Fail Case 1: CD-ROM Fail Check pick-up read power Go to “LD CHECK”. is 0.9~1.3mW? Does focus servo Go to “Focus Servo is unstable”. operate normally? Check pick-up •Check the pick-up FFC and LCN201. RF signal LIC201(Pin113) is •Replace the pick-up unit. 500~1000mVpp? Check RFEQO waveform Replace the LIC201...
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Recognition Fail Case 2:DVD Fail Check pick-up read power Go to “LD CHECK”. was 0.9~1.1mW? Is LIC201 pin 51(CD/DVD) level Replace the LIC201. was about 0V? Is there RF signal at LCN201pin 13,14. Replace the pick-up. Is there RF signal Replace the LIC201 at LIC201 pin 95.
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LD CHECK (Laser operating is abnormal) Perform 6. Optical Power Setting parameter check from‘How to use Test tool’. Execute “C.Laser Power Setup”of Is ALPC parameters “How to use Test Tool” valid? Perform 4. LD Test check from ‘How to use Test tool’. Check reference voltage.
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CD/DVD ? Select Mode: CD, Test and perform Select Mode: DVD, Test and perform Test from 4. LD Test of ‘How to use Test from 4. LD Test of ‘How to use Test tool’ Test tool’ Check the input of CD/DVD. Check the input of CD/DVD.
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Select Mode: DVD, Test and perform Select Mode: DVD, Test and perform Test from 4. LD Test of ‘How to use Test from 4. LD Test of ‘How to use Test tool’ Test tool’ Check the input of CD/DVD. Check the input of CD/DVD. (pin 17 of LCN201 : ‘L’) (pin 17 of LCN201 : ‘L’) Check the input of VWDC.
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In case of writing fail. Normal Case Check the media Check disc label. DVD ±R/RW? Does the disc Remove the dust,fingerprint and have any dust,scratch, if the disc has long width scratch, fingerprint …? change it. Finalized Disc? Eject disc. If DVD ±R disc,use new DVD ±...
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Writing Part Check Load tray with DVD ±R/RW disc. Press the “REC” key. Does writing finish without any error? Is the written file Eject tray. read normally? Go to “LD CHECK”. Is the re-written file read normally? Is SHAPCRE input signal pulse? (LIC01 pin 62) Check and replace the connection of Check and replace LIC201, LIC301.
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2) Recording format using organic dye material ( DVD-R / DVD+R ) The format that records data through the creation of recorded marks by changing the organic dye material with a laser beam. Disc structure Recording principles [ 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.
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3) Recording format using phase-change recording material ( DVD-RW / DVD+RW ) • Data is recorded by changing the recording layer from the amorphous status to the crystalline status, and played back by reading the difference of the reflection coefficient. Amorphous: Non-crystalline.
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To make recordings, it is necessary to modulate the write pulse, which is called “Write Strategy”. There can be many types in Write Strategy. Typically Write Strategy for DVD ±R has NMP(Non Multi-Pulse) type and MP(Multi-Pulse) type. In NMP type each single mark is created by subsequent separated short pulses. In MP type each single mark is created by one continuous pulse.
4. Organization of the Inner Drive Area, Outer Drive Area, Lead-in Zone and Lead-out Zone 1) Layout of DVD-RO M disc Disc Center Diameter 120 mm Diameter 44mm Diameter 33mm Diameter 22mm Diameter 16mm Diameter 15mm Center Clamping 3th transition Inform ation Zone hole Zone...
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3) Layout of DVD+RW disc Disc Center Diameter 120 mm Diameter 44mm Diameter 33mm Diameter 22mm Diameter 16mm Diameter 15mm Center Clamping 3th transition Inform ation Zone hole Zone area 1th transition area 2th transition area area Unrecorded Disc Lead-in Zone Data Zone Lead-out Zone Outer Disc...
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4) Layout of DVD-R/RW disc Disc Center Diameter 120 mm Diameter 44mm Diameter 33mm Diameter 22mm Diameter 16mm Diameter 15mm Center Clamping 3th transition Unrecorded Disc hole Area area 1th transition area 2th transition area area Inform ation Area R-Information Lead-in Lead-out Data Recordable Area...
How to use test tool 1. ALPC Measurement System Configuration In order to measure and adjust DVD RW optical power, The following measurement equipments are needed. Compulsory equipment ➀ Optical Power meter & Sensor (ADVANTEST, TQ8210/Q82017A or equivalent ➁ Personal Computer (Pentium 3, 500MHz Above, , RAM:64M Above, Win98 Above) ➂...
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2. ALPC Program Configuration ALPC Program consists of total 4 files. ALPC.exe LgBada.dll modelnm.txt WNASPI32.DLL These 4 files should be located in one directory. ALPC.exe is a program execution file. modelmn.txt is a configuration file. Determine how to connect The following contents are included when you open "modelnm.txt" file. The following contents are included when you open LGE connect=0 connect=0 is the item which you can determine whether you use Serial or ATAPI.
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3. Running ALPC Program When running ALPC.exe file, the following screen appears. CD/DVD Selection ALPC Setup or LD Display what is selected Test Selection in modelnm.txt Result output window Laser Power Setup window Laser Read Laser Write Laser off When Laser EEPROM Used When inputting Power On...
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4 LD Test * Test DVD LD * Test DVD CD ➀ Select DVD mode ➀ Select CD mode ➁ Select Test mode ➁ Select Test mode ➂ Click ➂ Click Test Test Section VRDC VR_FPD VWDC1 VW_FPD VW2-1 VW2-2 2.4±0.08 0.53±0.22 0.02±0.01...
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5. Optical Power Setting When replacing Travers ass’y including Pick-up or Loader PCB, Optical Power Setting should be performed for Pick-up and Loading PCB’s matching. ➀ DVD LD optocal Power Setting • Select DVD and Setup mode • Push . (Read Power On. Strong Red light can be seen from pick up optical lens.) •...
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6. Optical Power Setting Parameter Check Use when defective happens even though LD test result is normal. When defective can be found but power test result is OK, You need to check current settings whether they are proper or not. In this case, Pressing will display ALPC Parameter Info window and show current optical power settings recorded in EEPROM(IC302).
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Appendix. How to measure optical power Optical power measurement is measuring actual optical power coming out from an object lens with LD turned on. thus, In order to measure optical power, LD should to be turned on and environment need to be dark enough. If necessary, Cover the top side of the sensor with black paper or hand when measuring.
CIRCUIT VOLTAGE CHART MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE STATE STATE STATE STATE STATE STATE STATE STATE STATE STATE STATE PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO.
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S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS SW104 556-219B SWITCH,TACT THV10910G TACT DC 12 V 5-0 A V SW105 556-219B SWITCH,TACT THV10910G TACT DC 12 V 5-0 A V X101 6202R-BJ01A RESONATOR,CRYSTAL HC-49/S SUNNY 5.0000MHZ 30PPM CN104 561-036B CONNECTOR (CIRC),WAFER MA V 8283-0312 WH ELCO LED105...
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6850R-UAA04 CABLE,USB USB MALE TO USB FEMALE HYOSEUN 6850R-ZAE07 CABLE,COAXIAL FREE OF HAZARDOUS TLELPHONE CA 6711R1N183A REMOTE CONTROLLER ASSEMBLY MS-PVR RV7920M LG CONNECT 6631R-Y039A CONNECTOR ASSEMBLY RJ11 6P4C 6P 160M/M PHONE SPLI *** PWB(PCB)ASSEMBLY SMPS *** 6871RP0801A PWB(PCB) ASSEMBLY,POWER(MULTI) RV7920 WINPVR ORIENTECH ORTP-9...
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S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS AR501 0RRZVTA0018 RESISTOR,DRAWING 47 OHM 1 / 16 W 1608*4 5% R/TP AR502 0RRZVTA0018 RESISTOR,DRAWING 47 OHM 1 / 16 W 1608*4 5% R/TP AR503 0RRZVTA0018 RESISTOR,DRAWING 47 OHM 1 / 16 W 1608*4 5% R/TP AR504 0RRZVTA0018 RESISTOR,DRAWING...
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S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS SW104 556-219B SWITCH,TACT THV10910G TACT DC 12 V 5-0 A V SW105 556-219B SWITCH,TACT THV10910G TACT DC 12 V 5-0 A V X101 6202R-BJ01A RESONATOR,CRYSTAL HC-49/S SUNNY 5.0000MHZ 30PPM CN104 561-036B CONNECTOR (CIRC),WAFER MA V 8283-0312 WH ELCO LED105...