Diagnostic information 2-109
5026
920.21—POST (power-on self test)—24 V power supply failure error service check
4
Check the transport motor cable for pinch
points and any other damage to the cable or
connector.
Is the cable damaged?
Replace the transport
motor cable. See
“Transport cable
removal” on page 4-156.
Go to step 5.
5
Visually inspect the motor driver card.
Is the motor driver card damaged?
Replace the motor driver
card. See “Motor driver
card removal” on
page 4-100.
Go to step 6.
6
Replace the EP drive assembly. See
“Electrophotographic (EP) drive assembly
removal” on page 4-69.
Problem resolved. Replace the system board.
See “System board
removal” on page 4-139.
Step Questions / actions Yes No
1 Check the input voltage switch on the back of
the low-voltage power supply (LVPS).
Some LVPS FRU do not have switches and
switch automatically. If your does not have a
switch, go to step 2.
Is the voltage level (115/230) properly set?
Go to step 2. Set switch for the proper
country voltage.
Step Questions / actions Yes No
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