Dell 1135N Service Manual - Page 133
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Alignment and Troubleshooting 8) No Power Description : When system power is turned on, all lamps on the operator panel do not come on. 1. Check if the power input and SMPS output are normal. Replace the power supply cord or SMPS. 2. Check the condition of LED-Panel or LDC window on the front-cover if the OP panel does not appear after normal warming-up. 1. Replace the control board. 2. Replace the OP panel. Service Manual 4-60
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Alignment and Troubleshooting
4-60
Service Manual
8) No Power
Description :
When system power is turned on, all lamps on the operator panel do not come on.
1. Check if the power input
and SMPS output are normal.
Replace the power supply cord
or SMPS.
1. Replace the control board.
2. Replace the OP panel.
2. Check the condition
of LED-Panel or LDC window on the
front-cover if the OP panel does not
appear after normal
warming-up.