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6 Check for the voltages on the power supply cable using the values in the following
table.
Signals on the Power Supply Cable
Pin Signal Pin Signal
1 +5.00 V 11 –5.20 V
2 +5.00 V 12 Ground
3 +5.00 V 13 +12 V
4 +5.00 V 14 Ground
5 Ground (Digital) 15 –12 V
6 Ground (Digital) 16 Ground
7 Ground (Digital) 17 +12 V (Display)
8 Ground (Display) 18 –5.20 V
9 +3.50 V 19 +15 V (Fan)
10 Ground 20 Ground (Fan)
Troubleshooting
To test the power supply voltages
5–22