LG DR1F9H User Manual

3-1
SECTION 3
ELECTRICAL
CONTENTS
VDR PART
ELECTRICAL TROUBLESHOOTING GUIDE...................................................................................3-2
1. POWER SUPPLY ON SMPS BOARD........................................................................................3-2
2. POWER SUPPLY ON I/O BOARD..............................................................................................3-4
3. SYSTEM CIRCUIT PART..........................................................................................................3-11
4. DISC NOT RECOGNIZED ........................................................................................................3-11
5. WHEN PLAYING DISC, NO AUDIO OUTPUT..........................................................................3-12
6. NO OPTICAL / DIGITAL OUTPUT............................................................................................3-13
7. NO TUNER AUDIO OUTPUT ...................................................................................................3-14
8. NO EXTERNAL AUDIO INPUT.................................................................................................3-15
9. NO RGB / COMPONENT VIDEO SIGNAL WHEN PLAY DISC ...............................................3-16
10. NO COMPOSITE / S-VIDEO SIGNAL WHEN PLAY DISC ....................................................3-17
11. NO TV, EXTERNAL INPUT VIDEO SIGNAL...........................................................................3-18
12. NO DV(IEEE 1394) INPUT (VIDEO/AUDIO) SIGNAL............................................................3-19
BLOCK DIAGRAMS ........................................................................................................................3-20
1. POWER BLOCK DIAGRAM......................................................................................................3-20
2. MAIN POWER BLOCK DIAGRAM ...........................................................................................3-22
3. VIDEO IN BLOCK DIAGRAM ...................................................................................................3-24
4. VIDEO OUT BLOCK DIAGRAM ...............................................................................................3-26
5. AUDIO IN BLOCK DIAGRAM ...................................................................................................3-28
6. AUDIO OUT BLOCK DIAGRAM ...............................................................................................3-30
7. SYSTEM MAIN BLOCK DIAGRAM ..........................................................................................3-32
8. I/O µ-COM BLOCK DIAGRAM................................................................................................. 3-34
9. SCART BLOCK DIAGRAM(SCART MODEL ONLY) ................................................................3-36
10. HDMI BLOCK DIAGRAM (HDMI MODEL ONLY)...................................................................3-38
11. MEMORY BLOCK DIAGRAM (MEMORY SLOT MODEL ONLY)...........................................3-40
CIRCUIT DIAGRAMS ......................................................................................................................3-42
1. SMPS CIRCUIT DIAGRAM.......................................................................................................3-42
2. MAIN POWER CIRCUIT DIAGRAM.........................................................................................3-44
3. MPEG CIRCUIT DIAGRAM ......................................................................................................3-46
4. A.LATCH/FLASH/DDR CIRCUIT DIAGRAM.............................................................................3-48
5. LOADER/DV CIRCUIT DIAGRAM............................................................................................3-50
6. I/O µ-COM CIRCUIT DIAGRAM ...............................................................................................3-52
7. TUNER/MPX/ADC/DAC/JACK CIRCUIT DIAGRAM ................................................................3-54
8. DECODER CIRCUIT DIAGRAM...............................................................................................3-56
9. HDMI CIRCUIT DIAGRAM........................................................................................................3-58
10. TIMER CIRCUIT DIAGRAM....................................................................................................3-60
11. KEY CIRCUIT DIAGRAM........................................................................................................3-62
• WAVEFORMS.............................................................................................................................3-64
• CIRCUIT VOLTAGE CHART.......................................................................................................3-66
PRINTED CIRCUIT DIAGRAMS......................................................................................................3-72
1. MAIN P.C.BOARD(TOP SIDE) .................................................................................................3-72
2. MAIN P.C.BOARD(BOTTOM SIDE)..........................................................................................3-74
3. I/O P.C.BOARD .........................................................................................................................3-76
4. HDMI P.C.BOARD(OPTIONAL PARTS)....................................................................................3-76
5. KEY P.C.BOARD.......................................................................................................................3-78
6. TIMER P.C.BOARD...................................................................................................................3-78
7. POWER P.C.BOARD ................................................................................................................3-79

LG DR1F9H Specifications

General

Brand	LG
Model	DR1F9H
Category	DVD Recorder
Language	English