User manual LG DR676X SERVICE MANUAL
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Manual abstract: user guide LG DR676XSERVICE MANUAL
Detailed instructions for use are in the User's Guide.
[. . . ] 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 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. Shaded( ) parts are critical for safety. 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.
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2. MAIN POWER CIRCUIT DIAGRAM
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3. MPEG CIRCUIT DIAGRAM
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A
4. A. LATCH/FLASH/DDR CIRCUIT DIAGRAM
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3-45
5. LOADER/DV CIRCUIT DIAGRAM
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6. I/O µ-COM CIRCUIT DIAGRAM
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7. TUNER/MPX/ADC/DAC/JACK CIRCUIT DIAGRAM
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8. DECODER CIRCUIT DIAGRAM
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9. TIMER CIRCUIT DIAGRAM ( 6, 7 TOOL ONLY )
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10. KEY CIRCUIT DIAGRAM ( 6, 7 TOOL ONLY )
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· WAVEFORMS
X1101 13. 5 MHz
PMV03 PIN1 SDA
PMV03 PIN3 SCL
PMV03 PIN29 HOST_RXD
PMV03 PIN26 HOST_TXD
IC1202 PIN45 SDRAM_CLK1
IC1601 24. 576MHz
IC1601 PIN1 PHY_CLK
PMV02 PIN9 VIN_CLK
X901 14. 31818MHz
PMV02 PIN18 VOUT_CVBS
PMV02 PIN10 VOUT_G/Y
PMV02 PIN22 VOUT_C
PMV02 PIN2 VOUT_R/Pr
PMV02 PIN10 VOUT_G/Y
PMV02 PIN06 VOUT_B/Pb
IC901 PIN108 27MHz
PMV02 PIN01 AOUT_IEC958
PMV02 PIN10 AIN_MCLKOUT
PMV02 PIN07 AIN_SCLK
PMV02 PIN24 AOUT_MCLK
PMV02 PIN05 AIN_FSYNC
PMV02 PIN_FSYNC AOUT_FSYNC
PMV02 PIN26 AOUT_D0
PMV02 PIN29 VIN_D0
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· CIRCUIT VOLTAGE CHART
MODE PIN NO. 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 EE PB REC MODE PIN NO. 31 3. 23 2. 52 0. 00 4. 88 3. 62 3. 28 0. 00 4. 41 5. 28 4. 97 0. 00 4. 88 3. 25 3. 25 2. 55 1. 12 1. 71 0. 00 1. 25 3. 25 0. 00 5. 12 0. 00 4. 80 4. 87 0. 01 5. 13 5. 16 0. 01 0. 00 5. 16 0. 00 5. 16 4. 89 0. 04 0. 08 5. 05 5. 06 5. 11 4. 90 0. 00 0. 01 0. 01 0. 14 5. 16 0. 05 0. 22 5. 16 0. 01 0. 01 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 EE 0. 01 0. 01 0. 31 0. 33 0. 01 5. 16 2. 53 2. 43 0. 00 1. 99 2. 55 0. 00 4. 88 4. 89 0. 01 0. 64 0. 01 0. 00 1. 04 2. 78 5. 13 3. 01 2. 54 5. 10 5. 10 0. 01 5. 09 5. 00 5. 25 0. 00 4. 94 0. 00 0. 82 4. 83 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 5. 25 0. 00 0. 00 0. 01 0. 01 0. 01 0. 01 0. 01 0. 01 0. 24 0. 24 1. 94 0. 00 PB 0. 01 0. 01 0. 32 0. 32 0. 01 5. 16 2. 52 2. 42 0. 00 1. 95 2. 55 0. 00 4. 89 4. 90 0. 01 0. 63 0. 01 0. 00 1. 04 2. 90 5. 13 3. 04 2. 54 5. 10 5. 10 0. 01 5. 09 5. 00 5. 02 0. 00 4. 94 0. 00 0. 81 4. 82 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 5. 25 0. 00 0. 00 0. 01 0. 01 0. 01 0. 01 0. 01 0. 01 0. 19 0. 19 1. 92 0. 00 REC 0. 01 0. 01 0. 15 0. 16 0. 01 5. 16 2. 54 2. 42 0. 00 1. 95 2. 55 0. 00 4. 89 4. 90 0. 01 0. 63 0. 01 0. 00 1. 04 2. 89 5. 13 3. 05 2. 54 5. 10 5. 10 0. 01 5. 09 5. 01 5. 00 0. 00 4. 93 0. 00 0. 81 4. 82 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 0. 00 5. 25 0. 00 0. 00 0. 00 0. 01 0. 01 0. 01 0. 01 0. 01 0. 14 0. 15 1. 93 0. 00 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 1 2 3 4 5 6 7 8 1 2 3 1 2 3 4 5 6 MODE PIN NO. 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 EE 0. 00 0. 00 5. 25 5. 25 0. 01 0. 01 0. 02 0. 01 0. 01 0. 01 5. 16 0. 01 0. 01 0. 01 5. 16 2. 24 2. 37 5. 13 1. 87 0. 00 5. 13 5. 21 0. 00 4. 80 0. 00 0. 00 0. 00 0. 00 5. 05 5. 06 0. 00 5. 25 5. 17 0. 00 5. 17 0. 00 0. 00 0. 00 5. 06 5. 05 0. 00 0. 42 0. 00 5. 25 2. 80 0. 00 2. 47 0. 00 2. 49 2. 47 PB 0. 00 0. 00 5. 25 5. 25 0. 01 0. 01 0. 02 0. 01 0. 01 0. 01 5. 16 0. 01 0. 01 0. 01 5. 16 2. 24 2. 37 5. 13 1. 87 0. 00 5. 13 5. 21 0. 00 4. 80 0. 00 0. 00 0. 00 0. 00 5. 05 5. 06 0. 00 5. 25 5. 17 0. 00 5. 16 0. 00 0. 00 0. 00 5. 06 5. 05 0. 00 0. 42 0. 00 5. 01 2. 79 0. 00 2. 48 0. 00 2. 48 2. 48 REC 0. 00 0. 00 5. 25 5. 25 0. 01 0. 01 0. 02 0. 01 0. 01 0. 01 5. 16 0. 01 0. 01 0. 01 5. 16 1 2. 24 2. 38 5. 13 1. 87 0. 00 5. 13 5. 21 0. 00 4. 80 0. 00 0. 00 0. 00 0. 00 5. 06 5. 06 0. 00 5. 25 5. 17 0. 00 5. 16 0. 00 0. 00 0. 00 5. 06 5. 06 0. 00 0. 42 0. 00 5. 00 2. 81 0. 00 2. 48 0. 00 2. 49 2. 49 1 2 3 4 5 6 7 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 8 MODE PIN NO. 16 17 18 19 20 EE 1. 57 1. 48 0. 00 5. 25 5. 25 6. 06 6. 06 6. 05 0. 00 6. 05 6. 06 6. 06 12. 12 5. 19 0. 05 0. 05 2. 28 5. 00 1. 78 5. 14 1. 78 2. 27 0. 00 1. 77 0. 00 2. 25 5. 00 2. 24 5. 19 2. 31 2. 32 0. 00 2. 32 2. 33 0. 00 1. 90 2. 29 0. 00 1. 91 2. 31 0. 00 1. 98 2. 39 0. 06 2. 39 2. 74 12. 15 2. 74 12. 15 3. 06 5. 75 5. 76 PB 1. 56 1. 54 0. 00 5. 25 5. 25 6. 06 6. 06 6. 05 0. 00 6. 05 6. 06 6. 06 12. 12 5. 19 0. 06 0. 06 2. 27 5. 00 1. 60 5. 14 1. 58 2. 27 0. 00 1. 57 0. 00 2. 25 5. 00 2. 27 5. 19 2. 35 2. 37 0. 00 2. 30 2. 32 0. 00 1. 51 1. 79 0. 00 1. 52 1. 81 0. 00 1. 57 1. 85 0. 06 2. 37 2. 74 12. 15 2. 74 12. 15 3. 22 5. 75 5. 76 REC 1. 57 1. 54 0. 00 5. 25 5. 25 6. 07 6. 07 6. 05 0. 00 6. 05 6. 06 6. 06 12. 12 5. 19 0. 06 0. 06 2. 27 5. 00 1. 60 5. 15 1. 54 2. 27 0. 00 1. 56 0. 00 2. 25 5. 00 2. 27 5. 20 2. 34 2. 35 0. 00 2. 32 2. 32 0. 00 1. 46 1. 71 0. 00 1. 45 1. 75 0. 00 1. 49 1. 79 0. 06 2. 37 2. 74 12. 15 2. 74 12. 15 3. 18 5. 75 5. 76 1 2 3 4 5 6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 MODE PIN NO. 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 EE 5. 70 0. 01 5. 70 11. 55 5. 75 0. 01 5. 70 0. 01 5. 70 0. 00 0. 00 0. 00 5. 70 5. 81 5. 81 5. 74 5. 70 5. 80 5. 80 5. 73 3. 31 2. 47 2. 47 1. 88 5. 05 5. 07 0. 00 1. 61 1. 62 1. 62 1. 63 3. 17 0. 00 3. 08 3. 03 3. 23 3. 21 3. 22 1. 25 4. 12 12. 12 4. 11 0. 00 12. 13 4. 12 12. 12 3. 23 0. 00 0. 00 1. 88 2. 94 2. 94 2. 94 PB 5. 70 0. 01 5. 70 11. 55 5. 75 0. 01 5. 70 0. 01 5. 70 0. 00 0. 00 0. 00 5. 70 5. 81 5. 80 5. 74 5. 70 5. 80 5. 80 5. 73 3. 26 2. 62 2. 62 1. 88 5. 05 5. 07 0. 00 1. 61 1. 62 1. 62 1. 63 3. 17 0. 00 3. 08 3. 03 3. 23 3. 20 3. 22 1. 25 4. 12 12. 12 4. 11 0. 00 12. 13 4. 12 12. 12 3. 22 0. 00 0. 00 1. 87 2. 96 2. 96 2. 96 REC 5. 70 0. 01 5. 70 11. 55 5. 75 0. 01 5. 70 0. 01 5. 70 0. 00 0. 00 0. 00 5. 70 5. 81 5. 80 5. 73 5. 70 5. 80 5. 80 5. 73 3. 33 2. 35 2. 35 1. 80 5. 05 5. 07 0. 00 1. 62 1. 61 1. 62 1. 63 3. 17 0. 00 3. 08 3. 03 3. 23 3. 20 3. 22 1. 25 4. 12 12. 12 4. 11 0. 00 12. 13 4. 12 12. 12 3. 22 0. 00 0. 00 1. 87 2. 95 2. 94 2. 94 MODE PIN NO. [. . . ] 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. FOCUS, TRACKING & SLED SERVO PROCESS
S-DPWM 10bit 100/50 MHz
2. FOCUS/TRACKING/SLED SERVO CIRCUIT
4-36
ADC INT 16 bit Timer RFOUT
AN22113 FEP
PDIC
Internal u-P(F/W)
DESCRIPTION OF CIRCUIT
3. [. . . ]
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