User manual LG DR676X SERVICE MANUAL

[. . . ] SERVICE MANUAL DVD RECORDER SERVICE MANUAL MODEL : DR165/DR175/DR676X CAUTION BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS" IN THIS MANUAL. MODEL : DR165/DR175/DR676X CONTENTS SECTION 1 . REPLACEMENT PARTS LIST SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS. . . . . . . . . . . . . . 1-2 SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 · General Servicing Precautions · Insulation Checking Prodedure · Electrostatically Sensitive Devices SERVICE INFORMATION FOR EEPROM IC SETTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] MAIN POWER BLOCK DIAGRAM 3. 3V L1415 3V3D FLA SH 74LVT16373 L1416 L1417 L1602 L1105 L1418 PLLVDD AVDD 3V3D_PHY TSB41AB1 74LVC1G125 74LVC1G125 3V3A 3V3D_E5 L1114 XTAL_VDD L1104 DAC_VDD L1109 USB_VDD 5V DMN8601 DMN8602 L1410 1. 8V L1105 L1105 REF_VDD PLL_ VDD 74HCT125 L1409 2V5D_DDR 2. 5V L1413 SDRAM G2955 VTT 3-22 3-23 3. VIDEO IN BLOCK DIAGRAM AV4 In JK807 JK806 Y/C CVBS F_CVBS_IN AV3 In JK802 CVBS R_CVBS_IN RF In MAIN I/O TUNER TU701 F_C_IN F_Y_IN IC1101 DMN-8601 / DMN-8602 MPEG ENC/DEC Digital Vi deo ITU. R-BT 656 VIN_D[2:9], VIN_CLK PVM01 PMV02 R_SCART_IN IC901 Video Decoder Audio Processor SAA7137 SW_V_IOUT R_SCART_IN R_SCART_IN EU2_V_IN TU_V_IN ATAPI I/F IC1803 AV S/W MM1443 EU1_V_IN DVD DRIVER R/G/B CVBS CVBS SCART(AV2) SCART(AV1) 3-24 3-25 4. VIDEO OUT BLOCK DIAGRAM JK801 Y/C JK802 CVBS Y / Pb / Pr MAIN I/O Y IC1101 DMN-8601 / DMN-8602 MPEG ENC/DEC C L/C Filter & 150 Ohm IC802 Video 6dB Amp BH7868FS CVBS PVM01 PMV02 SW801 Y/G Pb / B Pr / R 5V CVBS , S-VIDEO Component / RGB ATAPI I/F IC701 MICOM GND IC1803 AV S/W MM1443 DVD DRIVER CVBS CVBS R / G / B SCART(AV2) SCART(AV1) 3-26 3-27 5. AUDIO IN BLOCK DIAGRAM AV4 In JK805 JK804 L / R IN AV3 In JK802 L / R IN RF In MAIN Digital Audio IN MCLK I2S I/O TUNER TU701 F_A L / R IN R_A L / R IN IC1101 DMN-8601 / DMN-8602 MPEG ENC/DEC AI_MCLK AI_FSYNC AI_SCLK AI_DO IC901 Video Decoder Audio Processor SAA7137 DAC SW_ AUDIO OUT L / R PVM01 PMV02 SIF IC_ OUT L / R SECAM AM ATAPI I/F IC1803 AV S/W MM1443 TU_ L / R OUT IC903, 904 AUDIO S/W NJM2521 DVD DRIVER L / R IN L / R IN SCART(AV2) SCART(AV1) 3-28 3-29 6. AUDIO OUT BLOCK DIAGRAM AV4 In JK805 JK804 L / R IN AV3 In JK802 L / R IN RF In MAIN Digital Audio IN MCLK I2S I/O TUNER TU701 F_A L / R IN R_A L / R IN IC1101 DMN-8601 / DMN-8602 MPEG ENC/DEC AI_MCLK AI_FSYNC AI_SCLK AI_DO IC901 Video Decoder Audio Processor SAA7137 DAC SW_ AUDIO OUT L / R PVM01 PMV02 SIF IC_ OUT L / R SECAM AM ATAPI I/F IC1803 AV S/W MM1443 TU_ L / R OUT IC903, 904 AUDIO S/W NJM2521 DVD DRIVER L / R IN L / R IN SCART(AV2) SCART(AV1) 3-30 3-31 7. SYSTEM MAIN BLOCK DIAGRAM IC1301 Ad dress HA[6:21] IC1302 FLASH ROM /SYS_RST Latch IC HD[0:15] RESET Circuit /FCS0, /OE2 /FLASH_WE /RST_HOST SIO_SPI CLK, CS0, MOSI E5_ALE IC701 MICOM /E5_RST SPI_CLK, CS0, MOSI SPI I/F Buffer PVM02 PMV03 SIO_SPI_MISO I2C ( SDA , SCL ) IC1101 DMN-8601 / DMN-8602 MPEG ENC/DEC SPI_MISO /VDEC_IRQ /RST_VDEC IC901 SAA7137 AV IC IC808 IC1601 TSB41AB1 PHY IC CS4351 A DAC /RST_PHY ATAPI I/F SDRAM I/F IC1202 IC1203 DDR DVD DRIVER MAIN I/O 3-32 3-33 8. I/O µ-COM BLOCK DIAGRAM SECAM_AM AV S/W IC803 MM1443 TU_L_OUT TU_R_OUT IC903, 904 A S/W NJM2521 IC_OUT_L IC_OUT_R SIF SMPS POWER BOARD X702 X701 14. 31818MHz 32. 768KHz PWR_CTL_H I2C_DATA I2C_CLK AV. DEC IC901 SAA7137 EEPROM IC705 24LC16B TUNER TU701 SMPS Block on I/O BOARD TIMER_H STANBY_H SIO_SPI_CLK SIO_SPI_MOSI AFT MAIN DMN8601 DMN8602 MPEG SW_V_OUT SI0_SPI_CS0 SIO_SPI_MISO MICOM IC701 MN101DF10GAF DAV VPS IC801 SDA5650 AV S/W IC803 MM1443 TIMER CV. IN2 DRIVER IC601 PT6955 G[ 1:7 ] S[ 1:8 ] V_CLK, VSTB TIMER_DOUT 6dB AMP IC703 MM1510 IC704 KIA7042 TU_V_OUT RESET PWR_FAIL_L IC706 KIA7031 DIG601 LED CLOCK I/O 3-34 3-35 9. SCART BLOCK DIAGRAM(SCART MODEL ONLY) Audio L/R CVBS TUNER DV (1394) TPA/TPB +/- SCART1 SCART2 A/V 1 AV SWITCH CANAL+ MM1443 T. Audio SW A/V SIF D. Video R-656 D. Audio ADC I2S D. Audio DAC I2S SPI MICOM T. Video PHY TSB41AB1 A/V 2 Rear RCA Front RCA Rear RCA Coaxial OUT Optical OUT A/V 3 A/V 4 PHILIPS SAA7137 VIDEO DECODER AUDIO ADC / MSP Audio L/R AUDIO DAC CS4351 DMN-8602 MPEG ATAPI I/F IEC60958 ( S/PDIF ) DVD DRIVER CVBS Video 6dB Amp BH7868FS Rear RCA CVBS S-VIDEO Component CVBS S-VIDEO Component 3-36 3-37 CIRCUIT DIAGRAMS 1. POWER CIRCUIT DIAGRAM IMPORTANT SAFETY NOTICE WHEN SERVICING THIS CHASSIS, UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE MODIFIED OR ALTERED WITHOUT PERMISSION FROM THE LG ELECTRONICS CORPORATION. ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIR- CUIT. SPECIAL COMPONENTS ARE SHADED ON THE NOTE : SCHEMATIC FOR EASY IDENTIFICATION. Replace only THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFwith specified part number. Voltages are DC-measured with a digital voltmeter IMPLEMENTATION OF THE LATEST SAFETY AND during Play mode. PERFORMANCE IMPROVEMENT CHANGES INTO THE SET IS NOT DELAYED UNTIL THE NEW SERVICE LITERATURE IS PRINTED. 12 No Power BD101, R101 are Defective 11 14VA No Power D127 is Defective 10 12V No Power IC131 is Defective 9 No Power D102 is Defective 8 5. 5VA No Power D125 is Defective 3. 7V No Power D124 is Defective 5V No Power IC132 is Defective 7 6 5 S/W Error IC101, IC104 are Defective 5. 3VA No Power D121 is Defective 33V No Power Q161 is Defective 4 No Power F101 is Defective 3 2 Switching Error IC102, IC103 are Defective 1 NOTES) NOTES) Symbol denotes AC ground. NOTE) NOTE) NOTE) NOTE) Warning Parts that are shaded are critical With respect to risk of fire or electricial shock. A B C D E F G H I J K L M N O P Q R S T 3-38 3-39 2. MAIN POWER CIRCUIT DIAGRAM 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T 3-40 3-41 3. MPEG CIRCUIT DIAGRAM 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T 3-42 3-43 A 4. A. LATCH/FLASH/DDR CIRCUIT DIAGRAM 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T 3-44 3-45 5. LOADER/DV CIRCUIT DIAGRAM 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T 3-46 3-47 6. I/O µ-COM CIRCUIT DIAGRAM 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T 3-48 3-49 7. TUNER/MPX/ADC/DAC/JACK CIRCUIT DIAGRAM 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T 3-50 3-51 8. [. . . ] THE POWER SIGNAL DETECTED WITH THE PD FOR FRONT MONITOR DETECTION IS INPUT THE VOLTAGE FROM THE VPD PIN(123PIN) OR THE FPDM PIN(127PIN), THE REFERENCE 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 PATH, SPACE/PLAYBACK POWER VALUE DETECTION PATH. 4-34 DESCRIPTION OF CIRCUIT 2. FOCUS, TRACKING & SLED SERVO PROCESS Focus, Tracking, Sled Servo Pick-up E F B C G H A D A, B, C, D E, F, G, H A, B, C, D E, F, G, H A, B, C, D Focus Error Detector FE Focus Error Detector TE IC121 AN22113A Tracking Focusing Actuator 53 T- 54 T+ 51 F- 52 F+ LIC201 Servo Control MN103SA6G A/D TE FE LEVEL SHIFT LEVEL SHIFT 5 4 FDRV 60 64 TDRV LIC301 BD7956FS 29 30 D A C PARALLEL DIGITAL COMPENSATOR STEP2 SLED COMPENSATOR A/D SDRV Logic 66 67 37 38 40 39 A+ A- B- B+ STEP1 M Stepping Motor 4-35 MN103SA6G Need to change to 16bit R On/Off Focus BD7956 Drive IC R On/Off Track MECHANISM S-DPWM 10bit 100/50 MHz DESCRIPTION OF CIRCUIT OPU 2-1. [. . . ]