3-5
Part 3: Adjustment
2. ELECTRICAL ADJUSTMENTS
2.1 Fan Voltage Adjustment
Measuring equipment ............Digital voltmeter
Test point ..............................TP66A - ground
Enter the service mode.
1. Set adjustment item to "50". Set data value to "1". (Fan voltage minimum)
2. Set adjustment item to "67". Set data value to "1".
3. Adjust TP66A voltage to 8.4 V ± 0.1 V DC using VR5601.
4. Set adjustment item to "50". Set data value to "0". (Fan voltage maximum)
5. Set adjustment item to "67". Set data value to "1".
2.2 NRS Adjustment
Measuring equipment ............Oscilloscope
Test point ..............................TP-NRS1
Input mode ...........................Computer
Input signal ...........................16-step gray scale
Enter the service mode.
Adjust the waveform voltage at each point to the following value with the /- button.
Adjustment item
Adjustment value
22
Set part A of the waveform to 3.0 V ± 0.1 V DC.
1
23
Set part B of the waveform to 12.0 V ± 0.5 V DC.
Fig. 3-2
2.3 Signal Center DC Voltage Adjustment
Measuring equipment ............Digital voltmeter
Input mode ............................Computer
Input signal ...........................16-step gray scale
Enter the service mode.
Adjust the voltage at each test point to the following value with the /- button.
Item No.
Test point
Adjustment value
1
TP-R1
7.3V ± 0.05V DC
2
TP-G1
7.3V ± 0.05V DC
3
TP-B1
7.3V ± 0.05V DC
A
B
GND
Summary of Contents for LV-S1U
Page 8: ...Part 1 General Information ...
Page 25: ...Part 2 Repair Information ...
Page 37: ......
Page 38: ...Part 3 Adjustment ...
Page 49: ...Part 4 Parts Catalog ...
Page 50: ......
Page 61: ......
Page 62: ...Part 5 Electrical Diagrams ...