Sony GV-A500E, Service Manual

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5-3. VIDEO SECTION ADJUSTMENTS ·························· 5-12
3-1. PREPARATIONS BEFORE ADJUSTMENT ·············· 5-12
3-1-1. Equipments to be Used ················································· 5-12
3-1-2. Precautions in Adjustment ············································ 5-13
3-1-3. Connector for Adjustments ··········································· 5-13
3-1-4. Connecting the Equipments ·········································· 5-14
3-1-5. Checking the Input Signals ··········································· 5-15
1.
S VIDEO input ····························································· 5-15
2. VIDEO input ································································ 5-15
3-1-6. Alignment Tape ···························································· 5-16
3-1-7. Input/Output Level and Impedance ······························ 5-18
3-1-8. Recording Mode (Standard 8/Hi8) switching ·············· 5-18
3-1-9. Service Mode ································································ 5-18
1.
Test mode setting ·························································· 5-18
2. Emergency Memory Address ······································· 5-19
2-1. EMG CODE (Emergency Code) ·································· 5-19
2-2. MSW Codes ································································· 5-20
3. Bit value discrimination ··············································· 5-21
4. Input/output selection check ········································· 5-21
5. Condensation, head clogging check ····························· 5-22
6. VTR state check (1) ······················································ 5-22
7. VTR state check (2) ······················································ 5-22
8. VTR state check (3) ······················································ 5-23
9. Record of Use Check ···················································· 5-23
3-2. SYSTEM CONTROL SYSTEM ADJUSTMENTS ···· 5-24
1. Initialization of D, E, F Page Data ······························· 5-24
2. Battery End Adjustment (VC-197 board) ····················· 5-24
3. Battery down voltage check ········································· 5-24
3-3. SERVO SYSTEM ADJUSTMENTS ··························· 5-25
1. CAP FG Offset Adjustment (VC-197 board) ··············· 5-25
2. Switching Position Adjustment (VC-197 board) ·········· 5-25
3. NTSC LP mode Switching Position Adjustment
(VC-197 board) ···························································· 5-26
3-4. VIDEO SYSTEM ADJUSTMENTS ···························· 5-26
1. 28 MHz Origin Oscillation Adjustment
(VC-197 board) ···························································· 5-26
2. Filter f0 Adjustment (VC-197 board) ··························· 5-27
3. Y OUT Level Adjustment (VC-197 board) ·················· 5-27
4. C OUT Level Adjustment (VC-197 board) ·················· 5-28
5. RP Filter f0 Adjustment (VC-197 board) ····················· 5-28
6. AFC f0 Adjustment (VC-197 board) ···························· 5-29
7. NTSC Hi8 REC Y Current Adjustment
(VC-197 board) ···························································· 5-30
8. PAL Hi8 REC Y Current Adjustment
(VC-197 board) ···························································· 5-30
9. NTSC Hi8 REC C Current Adjustment
(VC-197 board) ···························································· 5-31
10. PAL Hi8 REC C Current Adjustment
(VC-197 board) ···························································· 5-32
11. REC C Current Adjustment
(VC-197 board) ···························································· 5-33
3-5. IR Transmitter Adjustments ·········································· 5-34
1. IR Video Carrier Frequency Adjustment
(MI-27/28 board) ·························································· 5-34
2. IR Video Deviation Adjustment (MI-27/28 board) ······ 5-34
3. IR Audio Deviation Adjustment (MI-27/28 board) ······ 5-35
3-6. AUDIO SYSTEM ADJUSTMENT ······························ 5-36
1. 1.5 MHz Deviation Adjustment (VC-197 board) ········· 5-37
2. 1.7 MHz Deviation Adjustment (VC-197 board) ········· 5-37
3. BPF f0 Adjustment (VC-197 board) ···························· 5-38
3-7. LCD SYSTEM ADJUSTMENT ·································· 5-39
1. LCD Initial Data Input ················································· 5-39
2. VCO Adjustment (PD-88 baord) ·································· 5-40
3. H POS Adjustment (VC-197 baord) ····························· 5-40
4. Bright Adjustment (VC-197 baord) ······························ 5-41
5. Contrast Adjustment (VC-197 baord) ·························· 5-41
6. Color Adjustment for NTSC model (VC-197 baord) ··· 5-42
7. Hue Adjustment for NTSC model (VC-197 baord) ···· 5-42
8. Burst Cleaning Adjustment for PAL model
(VC-197 baord) ···························································· 5-43
9. Color Adjustment for PAL model (VC-197 baord) ······ 5-43
10. V-COM Adjustment (PD-88 baord) ····························· 5-44
11. White Balance Adjustment (VC-197 baord) ················ 5-44
6. REPAIR PARTS LIST
6-1. EXPLODED VIEWS ··················································· 6-1
6-1-1. OUTER CABINET ASSEMBLY ································· 6-1
6-1-2. LCD BLOCK, UPPER CABINET
BLOCK ASSEMBLY ··················································· 6-2
6-1-3. MD BLOCK ASSEMBLY ··········································· 6-3
6-1-4. CASSETTE COMPARTMENT BLOCK SECTION ··· 6-4
6-1-5. LS CHASSIS BLOCK SECTION ······························· 6-5
6-1-6. MECHANISM CHASSIS BLOCK SECTION ············ 6-6
6-2.
ELECTRICAL PARTS LIST ······································· 6-7