TABLE OF CONTENTS
SECTION 1. CONTROLS AND FUNCTIONS
..........................................................................................................2
SECTION 2. ELECTRICAL ADJUSTMENTS
2-1. SERVO CIRCUIT ADJUSTMENT METHOD .....................................................................................................................3
2-2. VIDEO CIRCUIT ADJUSTMENT METHOD.......................................................................................................................4
2-3. AUDIO CIRCUIT ADJUSTMENT METHOD....................................................................................................................10
SECTION 3. TROUBLE SHOOTING FLOW CHART
3-1. POWER CIRCUIT.............................................................................................................................................................11
3-2. LOGIC CIRCUIT ...............................................................................................................................................................13
3-3. SERVO/SYSCON CIRCUIT .............................................................................................................................................16
3-4. AUDIO CIRCUIRT ............................................................................................................................................................21
3-5. VIDEO CIRCUIT ...............................................................................................................................................................23
SECTION 4. BLOCK DIAGRAM
4-1. Y.C./HEAD AMP/AUDIO/INPUT SELECTOR BLOCK DIAGRAM.................................................................................27
4-2. SYSCON/LOGIC BLOCK DIAGRAM..............................................................................................................................28
4-3. PIF/OSD BLOCK DIAGRAM ...........................................................................................................................................29
SECTION 5. CIRCUIT DIAGRAM
5-1. CONNECTION DIAGRAM ...............................................................................................................................................30
5-2. POWER CIRCUIT (SMPS) ...............................................................................................................................................31
5-3. SYSCON CIRCUIT...........................................................................................................................................................33
5-4. TIMER CIRCUIT ...............................................................................................................................................................34
5-5. PIF & INPUT SELECTOR CIRCUIT .................................................................................................................................35
5-6. HEAD-AMP CIRCUIT.......................................................................................................................................................36
5-7. VIDEO CIRCUIT ...............................................................................................................................................................37
5-8. AUDIO CIRCUIT...............................................................................................................................................................38
5-9. OSD CIRCUIT...................................................................................................................................................................39
5-10. REMOCON CIRCUIT .....................................................................................................................................................40
SECTION 6. VOLTAGE CHART
6-1. IC VOLTAGE.....................................................................................................................................................................41
6-2. TR VOLTAGE....................................................................................................................................................................48
SECTION 7. COMPONENTS LOCATION GUIDE ON PCB (BOTTOM VIEW)
7-1. PCB HEAD-AMP..............................................................................................................................................................49
7-2. PCB MAIN ........................................................................................................................................................................50
7-3. PCB LOGIC ......................................................................................................................................................................51
SECTION 8. DISASSEMBLY
8-1. PACKING AS....................................................................................................................................................................52
8-2. SET TOTAL ASSEMBLY..................................................................................................................................................53
SECTION 9. ELECTRICAL PARTS LIST
9-1. STANDARD PART NUMBER CODING ..........................................................................................................................54
9-2. ELECTRICAL PARTS LIST ..............................................................................................................................................56
APPENDIX
VCR MECHANISM TECHNICAL SERVICE GUIDE
...........................................................................................65
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