SONY GVD900/E Repair Manual

Y EX-34 (DC-AC Inverter)14. Decoder ACC Adjustment (CB-61 Board) ....................5-22
Schematic Diagram .......................................15. Decoder HUE Adjustment (CB-61 Boar4-89d)....................5-23
Y EX-34 (Multi Connector, Back Light Power)16. Y AD Clamp Adjustment (CB-61 Board) .....................5-23
Printed Wiring Board ....................................17. CR AD Clamp Adjustment (CB-61 Boar4-93d) ...................5-24
Y FK-71 (Control Switch Block) ...................................18. CB AD Clamp Adjustment (CB-61 Boar4-95d) ...................5-24
19. Y AD Level Adjustment (CB-61 Board) .......................5-25
5.ADJUSTMENTS20. CR AD Adjustment (CB-61 Board)...............................5-25
5-1. Adjustment Preparations .................................................21. CB AD Level Adjustment (CB-61 Board)5-1.....................5-26
1-1. Preparations Before Adjustment......................................3-5-4.BIST Check ...................................................................5-15-27
1-1-1.List of Service Tools ........................................................1.Playback System Check ................................................5-15-27
5-2. Mechanism Section Adjustment ......................................2.Recording System Check5-2..............................................5-28
2-1. Operating Without Cassette .............................................3-6. IR Transmitter Adjustments5-2...........................................5-29
2-2. Tape Path Adjustment ......................................................1.IR Video Carrier Frequency Adjustment5-2
1.Preparations for Adjustment ............................................ (CB-61 Board) ..............................................................5-25-29
5-3. Electrical Adjustments.....................................................2.IR Video Deviation Adjustment (CB-61 Board)5-3...........5-29
3-1. Preparations Before Adjustments ....................................3.IR Audio Deviation Adjustment (CB-61 Board)5-3...........5-30
3-1-1.Equipment Required ........................................................3-7. Audio System Adjustments ...........................................5-35-31
3-1-2.Precautions on Adjusting .................................................1.Playback Level Check ...................................................5-45-31
3-1-3.Adjusting Connectors ......................................................2.Overall Level Characteristics Check5-4.............................5-31
3-1-4.Connecting the Equipment ..............................................3.Overall Separation Check5-5..............................................5-31
3-1-5.Checking the Input Signals..............................................4.Overall Noise Level Check............................................5-65-32
3-1-7.Input/Output Level and Impedance .................................3-8. LCD System Adjustment (GV5-6-D900/D900E) ...............5-33
3-1-6.Alignment Tape ...............................................................1.LCD Initial Data Input ..................................................5-65-33
3-2. Initialization of D, C Page Data ......................................2.PANEL �19V Adjustment (CB-61 Board)5-7....................5-34
1.Initializing the D Page Data ............................................3.Horizontal Position Adjustment (CB-61 Board)5-7...........5-34
2.Modification of D Page Data...........................................4.Bright Adjustment (CB-61 Boar5-7d) ................................5-35
3.D Page Table....................................................................5.Contrast Adjustment (CB-61 Board)5-7.............................5-35
4.Initializing the C Page Data.............................................6.Color Adjustment for NTSC Model (CB-61 Board)5-9.....5-36
5.Modification of C Page Data ...........................................7.HUE Adjustment for NTSC Model (CB-61 Board)5-9......5-36
6.C Page Table ....................................................................8.Burst Cleaning Adjustment For PAL Model5-9
3-3. System Control System Adjustment ..............................(CB-61 Board) ...............................................................5-115-37
1.Battery End Adjustment (CB-61 Board) .......................9.Color Adjustment F5-11or PAL Model (CB-61 Board) .......5-37
3-4. Servo System Adjustments ............................................10. V-COM Adjustment (CB-61 Boar5-12d) .............................5-38
1.T Reel FG Duty Adjustment (RJ-77 Board)..................11. White Balance 5-12Adjustment (CB-61 Board) ...................5-38
2.Switching Position Adjustment (RJ-77 Board)5-4..............Service Mode5-12.................................................................5-39
3-5. Video System Adjustments............................................4-1. Adjustment Remote Commander5-13..................................5-39
3-5-1.RF Block Adjustments...................................................1.Using the Adjustment Remote Commander5-13..................5-39
1.Recording Current Adjustment (RJ-77 Board)..............2.Precautions Upon Using the5-13
2.PLL F0 Adjustment (RJ-77 Board) ................................Adjustment Remote Commander5-13..................................5-39
3.CLK DELAY Adjustment (RJ-77 Board) .....................4-2. Data Process5-14..................................................................5-40
4.AGC Center Level Adjustment (RJ-77 Board)..............4-3. Service Mode5-14.................................................................5-41
5.AEQ Adjustment (RJ-77 Board) ...................................1.Setting the Test Mode5-15....................................................5-41
6.PLL Capture Range Adjustment (RJ-77 Board)............2.Emergence Memor5-15y Address ........................................5-41
3-5-2. Clock Adjustments ........................................................2-1. EMG Code (Emergency Code) .....................................5-165-41
1.IC1900 27MHz XTAL F0 Adjustment (RJ-77 Board)...2-2.5-16MSW Code ....................................................................5-42
2.IC1900 VCO Operation Check (RJ-77 Board)..............3.Bit Value 5-16Discrimination ...............................................5-43
3.IC6101 41.85MHz VCO Operation Check4.Switch Check (1) ...........................................................5-43
(RJ-77 Board) ................................................................5.Switch Check (2) ...........................................................5-165-44
3-5-3. Base Band Block Adjustments......................................6.Record of Use Check 5-17.....................................................5-44
1.NPS PLL Adjustment (CB-61 Board) ...........................5-17
2.NPS Y Level Adjustment (CB-61 Board)......................6.REPAIR PAR5-17TS LIST
3.VIDEO Output Y Level Adjustment (CB-61 Board)6-1.....Exploded V5-18iews ...............................................................6-1
4.S VIDEO Output Y Level Adjustment6-1-1.Cabinet Assembly ............................................................6-1
(CB-61 Board) ...............................................................6-1-2.LCD Window Cabinet, Cabinet (Upper) 5-18Assembly ........6-2
5.AGC Adjustment (CB-61 Board) ..................................6-1-3.Mechanism Deck 5-19Assembly ............................................6-3
6.NPS B-Y Level Adjustment (CB-61 Board) .................6-1-4.Cassette Compartment and Drum 5-19Assembly ...................6-4
7.NPS R-Y Level Adjustment For PAL Model6-1-5.LS Chassis Block Section................................................6-5
(CB-61 Board) ...............................................................6-1-6.Mechanism Chassis Block Section-15-20..............................6-6
8.VIDEO Output Burst Level Adjustment6-1-7.Mechanism Chassis Block Section-2 ..............................6-7
(CB-61 Board) ...............................................................6-2. Electrical Parts List .........................................................5-206-8
9.NPS R-Y Level Adjustment For NTSC Model
(CB-61 Board) ...............................................................5-20
10. S VIDEO Output Chroma Level Adjustment
(CB-61 Board) ...............................................................5-21
11. AFC TC Adjustment (CB-61 Board).............................5-21
12. AFC F0 Adjustment (CB-61 Board) ..............................5-22
13. Decoder APC Adjustment (CB-61 Board) ....................5-22
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