SECTION 3
ELECTRICAL ADJUSTMENT
3.1 PRECAUTION
1. Precaution
Both the camera and deck sections of this model needs a personal computer for adjustment except simple adjustment with potentiometers. If some of the following parts is replaced for repair or other reason, the repaired set must be adjusted with a personal computer.
•OP block
•E2PROM (IC1003 of MAIN board)
•MONITOR
•E2PROM (IC7603 of MONITOR board)
In the event of malfunction with electrical circuits, trouble- shooting with the aid of proper test instruments most be done first, and then commence necessary repair, replacement and adjustment, etc.
1.In case of wiring to chip test points for measurement, use IC clips, etc. to avoid any stress.
2.Since connectors are fragile, carefully handle them in dis- connecting and connecting.
3.Shortcircuit between operation and DECK chassis.
2. Required test equipment
1.Color TV monitor.
2.AC adapter
3.Oscilloscope
Note : It is recommended to use one observable 300 MHz or higher frequency.
4.Digital voltmeter
5.Frequency counter (with threshold level adjuster)
6.Personal computer
3. Tools required for adjustments
1 | Torque Driver | 2 | Bit | |
YTU94088 | ||||
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3 | Tweezers | 4 | Chip IC Replacement Jig | |
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5 | Jig Connector Cable | 6 | Communication Cable | |
YTU93082C | YTU93107A | |||
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7 | PC Cable | 8 | Service Support System | |
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9 | Alignment Tape | 10 | INF Adjustment Lens | |
YTU92001B | ||||
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11 | INF Adjustment Lens Holder | 12 | Camera Stand |
| YTU94087 |
| YTU93079 |
13 | Light box Assembly | 14 | Gray Scale Chart | |||||||||||||
YTU93096A |
| YTU94133A | ||||||||||||||
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15Color Bar Chart
YTU94133C
Table
