Lexmark B2650 Service Manual page 115

Action
Step 3
a
Disconnect the fuser cable from the power supply, and then
turn on the printer.
b
Check if the voltage output of the fuser cable socket on the
power supply is normal (100V, 110V, or 220V).
CAUTION—SHOCK HAZARD: To avoid the risk of
electrical shock, do not touch the exposed wires and circuits.
Does the power supply provide the fuser with the normal voltage
value?
Step 4
a
Turn off the printer, and then remove the power cord.
b
Remove the power supply. See
page 216.
c
Check the power supply, including its fuse and capacitors, for
damage.
CAUTION—SHOCK HAZARD: Do not touch the
exposed wires and circuits.
Is the power supply free of damage?
Step 5
Replace the power supply. See
page 216.
Does the problem remain?
LVPS mismatch service check
Note: Make sure that the voltage output of the electrical outlet matches the voltage rating of the printer.
Action
Step 1
a
Turn off the printer, and then unplug the power cord.
b
Remove the rear door and cover. See
removal" on page
c
Remove the right cover. See
page 186.
d
Reseat all the cables from the controller board.
e
Reseat all the cables from the power supply.
CAUTION—SHOCK HAZARD: To avoid the risk of
electrical shock, do not touch the exposed wires and circuits.
Does the problem remain?
"Power supply removal" on
"Power supply removal" on
"Rear door and cover
234.
"Right cover removal" on
Diagnostics and troubleshooting
Yes
Go to step 4.
Contact the next
level of support.
Contact the next
level of support.
Yes
Go to step 2.
115
4600-830, -835, -895
No
Go to step 5.
Go to step 5.
The problem is
solved.
No
The problem is
solved.