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Table 3-4 Backlight Inverter Board Input Voltages - Keysight 8990B Service Manual

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3
Troubleshooting Guide
Table 3-4
Backlight inverter board input vol tages
Input pin
Backlight OFF
Backlight ON
68
Backlight inverter board input voltages
7
6
0 V
0 V
5 V
0 V
5
4
3
0 V
0 V
0 V
2.5 V
0 V
0 V
Keysight 8990B Service Guide
2
1
0 V
0 V
12 V
12 V

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