Dc Power Service Check - Lexmark 13P0150 - C 750dtn Color Laser Printer Service Manual

DC Power Service Check

The machine is partially operative, a motor turns, display is on or the Power On LED may
be on or off.
Step Actions and Questions
1
Does the printer Beep 5 times and the Operator Panel
display all diamonds?
2
DC Power to Engine Board - Turn the power off and
disconnect the LVPS cable to J9 on the Engine Board. Turn
the power on and check the following voltages on the LVPS
cable.
* J9-1 +3.3 V dc
* J9-2 +5 V dc
* J9-3 +5 V dc
* J9-4 +24 V dc
* J9-5 +24 V dc
* J9-6 Ground
* J9-7 Ground
* J9-8 Ground
* J9-9 Ground
* J9-10 Ground
Note: All voltages are approximate values.
Are the voltages correct?
3
DC Voltages at RIP Board - Turn the power off and
disconnect the LVPS cable to J23 on the RIP Board. Turn
the Power Supply Assembly power on and check the
following voltages on the LVPS cable:
* J23-1 Ground
* J23-2 Ground
* J23-3 Ground
* J23-4 Ground
* J23-5 Ground
* J23-6 Ground
* J23-7 Ground
* J23-8 Ground
* J23-9
* J23-10 +3.3 V dc
* J23-11 +3.3 V dc
* J23-12 +3.3 V dc
* J23-13 +5.0 V dc
* J23-14 +5.0 V dc
* J23-15 +5.0 V dc
* J23-16 +24 V dc
Note: All voltages are approximate values.
Are the voltages correct?
5060-XXX
Yes No
Go to the Go to Step 2
"Operator
Panel LCD/
Status LED/
Buttons
Service
Check" on
page 2-77
Go to Step 3 Replace the
"LVPS" on
page 4-14
Problem Replace the
Solved "LVPS" on
page 4-14
Diagnostic Information
2-51