Sharp VL-AX1U Manual de Serviço descarregar pdf (Página 44)

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VL-AX1U

Item

Adjustment method

(1) Set the unit to the normal operation mode (write the data " FF" to the address

"0000").

(2) Video output is observed with the oscilloscope in the grey scale standard record

state, the data of address "0002" is rewritten, and the luminance signal level is

adjusted white to 760 ± 10mVp-p, gray of the background 420 ± 10mVp-p.

(12) Iris AE adjustment

• Measurement terminal:

S terminal luminance signal output

(75 Ω termination)

• Address: "0002" AE_CVT

• Measuring instrument:

Oscilloscope (horizontal sync)

• Object:

Grey scale

• Data variation width:

"0000" to "00FE"

100mV/div

1 2 ... 39 40 41 42 43 44 45 46 47 48 49 ... 116 117

SERVICE MANUAL 1
1. IMPORTANT SERVICE NOTES 2
ATTENTION 3
CAUTION 4
2. SPECIFICATIONS 5
3. PART NAMES 6
4. DISASSEMBLY OF THE SET 7
Camera=Main FPC BtoB 8
Lens FPC 8
Focus FPC 8
Lens cabinet 9
(1) Slide caliper 10
(2) Precision screwdrivers 10
(3) Radio needle-nose pliers 10
(4) Tweezers 10
Performance checks 11
6-2. Precautions 11
<Precautions> 12
8. TAPE RUNNING ADJUSTMENT 15
8-4. Running rough adjustment 16
8-5. Final running adjustment 16
(DISASSEMBLY AND REASSEMBLY) 17
9-4. Phase matching 19
(Tentative tightening) 20
Fit the main brake SPR from 21
Swing arm Ass'y 22
Reel cover Ass'y 22
FPC cover 22
9-6. Removing the cassette 23
[Making adjustments] 28
1.0±0.05 30
ADJUSTING THE LCD CIRCUIT 31
VIDEO I/O ENG DAC CIRCUIT 32
2.0Vp-p 0.1Vp-p 34
ADJUSTING THE MIC AMP CIRCUIT 35
MODEL ID SETTING 37
000A Iris offset adjustment 41
100mV/div 42
Picture fails 45
Blueback fails 45
12. SIGNAL FLOW DIAGRAMS 46
12-3. FLOW IN PB MODE (VIDEO) 47
WAVEFORM DIAGRAM 47
(DURING COLOR BAR PLAYBACK) 47
From IC3404 48
PB system 48
13. BLOCK DIAGRAMS 49
CCD CAMERA 50
- M E M O 55
14-4. CMC SCHEMATIC DIAGRAM 59
14-16. DAC SCHEMATIC DIAGRAM 71
14-18. V/F SCHEMATIC DIAGRAM 73
14-22. CCD SCHEMATIC DIAGRAM 77
14-23. TG SCHEMATIC DIAGRAM 78
14-24. CDS SCHEMATIC DIAGRAM 79
14-26. LCD SCHEMATIC DIAGRAM 81
MAIN PWB 85
CAMERA PWB 89
HEAD AMP PWB 92
Component Side SIDE A 92
Wiring Side SIDE A 92
Component Side SIDE B 93
Wiring Side SIDE B 93
17. REPLACEMENT PARTS LIST/ 94
EXPLODED VIEWS 94
PACKAGED CIRCUITS 95
COILS AND TRANSFORMER 95
CAPACITORS 95
MISCELLANEOUS PARTS 102
DUNTK3120QA03 103
SUB PWB UNIT 103
RESISTORS 104
DUNTK3121QA01 105
CAMERA PWB UNIT 105
DUNTK3122QA01 106
LCD PWB UNIT 106
MECHANISM PARTS 108
CASSETTE CONTROL PARTS 108
CABINET PARTS LIST 109
CAMERA UNIT PARTS LIST 110
ACCESSORIES 111
CABINET EXPLODED VIEW 113
CASSETTE CONTROL EXPLOOD VIEW 114
CAMERA UNIT EXPLOOD VIEW 114
18. PACKING OF THE SET 116
COPYRIGHT 117
2002 BY SHARP CORPORATION 117

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