TABLE OF CONTENTS
SECTION 1. CONTROLS AND FUNCTIONS
...........................................................................................................3
SECTION 2. ELECTRICAL ADJUSTMENTS
2-1. VIDEO CIRCUIT ADJUSTMENT METHODS.....................................................................................................................5
2-2. AUDIO CIRCUIT ADJUSTMENT METHOD.......................................................................................................................7
2-3. IF MODULE CIRCUIT ADJUSTMENT METHODS............................................................................................................8
SECTION 3. CIRCUIT OPERATION PRINCIPLES
3-1. POWER CIRCUIT..............................................................................................................................................................12
3-2. VIDEO CIRCUIT ................................................................................................................................................................14
3-3. IF CIRCUIT OPERATION..................................................................................................................................................19
SECTION 4. TROUBLE SHOOTING FLOW CHART
4-1. POWER CIRCUIT..............................................................................................................................................................21
4-2. PIF CIRCUIT TROUBLE SHOOTING...............................................................................................................................23
4-3. LOGIC CIRCUIT................................................................................................................................................................24
4-4. SERVO-SYSCON CIRCUIT..............................................................................................................................................26
4-5. AUDIO CIRCUIT................................................................................................................................................................34
4-6. VIDEO CIRCUIT ................................................................................................................................................................36
SECTION 5. WAVEFORMS OF THE VIDEO CIRCUIT
......................................................................................47
SECTION 6. µ-COM PORT DESCRIPTION
............................................................................................................51
SECTION 7. CIRCUIT DIAGRAM
7-1. CONNECTION DIAGRAM ................................................................................................................................................57
7-2. POWER CIRCUIT..............................................................................................................................................................58
7-3. MAIN CIRCUIT..................................................................................................................................................................59
7-4. LOGIC CIRCUIT................................................................................................................................................................60
7-5. VIDEO CIRCUIT ................................................................................................................................................................61
7-6. 2 HEAD PRE AMP CIRCUIT.............................................................................................................................................62
7-7. 4 HEAD PRE AMP CIRCUIT.............................................................................................................................................63
7-8. SECAM COLOUR CIRCUIT .............................................................................................................................................64
7-9. AUDIO CIRCUIT................................................................................................................................................................65
7-10. IF MODULE CIRCUIT .....................................................................................................................................................66
7-11. PIF CIRCUIT....................................................................................................................................................................67
7-12. SW & SCART CIRCUIT...................................................................................................................................................68
7-13. OSD CIRCUIT .................................................................................................................................................................69
7-14. REMOTE CONTROL CIRCUIT (VR-F2B).......................................................................................................................70
SECTION 8. COMPONENTS LOCATION GUIDE ON PCB (BOTTOM VIEW)
8-1. PCB MAIN .........................................................................................................................................................................71
8-2. PCB POWER.....................................................................................................................................................................72
8-3. PCB PRE AMP (4HEAD)...................................................................................................................................................72
8-4. PCB PRE AMP (2HEAD)...................................................................................................................................................72
8-5. PCB VIDEO .......................................................................................................................................................................73
8-6. PCB IF MODULE ..............................................................................................................................................................73
8-7. PCB AV & SCART.............................................................................................................................................................73
8-8. PCB LOGIC.......................................................................................................................................................................74
SECTION 9. DISASSEMBLY
9-1. PACKING ASS'Y...............................................................................................................................................................76
9-2. FRONT PANEL ASSEMBLY.............................................................................................................................................77
9-3. SET TOTAL ASSEMBLY ..................................................................................................................................................80
9-4. INSTRUMENT DISASSEMBLY........................................................................................................................................81
9-5. JIG PCB CONNECTION DIAGRAM.................................................................................................................................89
SECTION 10. ELECTRICAL PART LIST
...................................................................................................................90
2
Summary of Contents for DV-F24S
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Page 73: ...SECTION 8 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW 8 1 PCB MAIN 71 ...
Page 74: ...8 2 PCB POWER 72 8 3 PCB PRE AMP 4HEAD 8 4 PCB PRE AMP 2HEAD ...
Page 75: ...8 5 PCB VIDEO 73 8 6 PCB IF MODULE 8 7 PCB AV SCART ...
Page 76: ...8 8 PCB LOGIC 74 1 DV F24S F44S 2 DV F26S F46S ...
Page 77: ...75 3 DV F28S F48S ...
Page 91: ...9 5 JIG PCB CONNECTION DIAGRAM VIDEO JIG VIDEO PCB DEC DECK ...
Page 92: ...A V SCART GIG SMPS JIG POWER N PCB G A V SCART PCB ...