Lexmark X548 Series Service Manual

2-56 Service Manual
7525-63x
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Transfer roll service check
Tray (x) sensor service check
Step Questions / actions Yes No
1 Remove the ITU. See “Image transfer unit
(ITU) removal” on page 4-43. Check the
contacts between the HVPS and the ITU.
Clean the contacts and recheck.
Does the error reoccur?
Replace the ITU. See
“Image transfer unit (ITU)
removal” on page 4-43.
Go to step 2.
Problem resolved.
2
Does the new ITU fix the problem? Problem resolved. Go to step 3.
3
Turn the printer off, and remove the rear
shield. See“Rear shield removal” on
page 4-7.
Turn the printer on, and check the cable at
JHVPS1 connector on the RIP board without
disconnecting it. Verify the following voltage
values:
Are the values approximately correct?
Replace the HVPS“High-
voltage power supply
(HVPS) with spring
assembly removal” on
page 4-40.
Replace the RIP board. See
“RIP board removal” on
page 4-19.
Step Questions / actions Yes No
1 When the printer is in Ready state, pull the
standard tray out. The display should indicate
Tray (x) Missing. Insert the tray.
Does the message remain on the display?
Go to step 2. Go to step 4.
2
Check the vertical well at the right rear of the
tray for damage.
Is the tray damaged?
Replace the tray. Go to step 3.
3
Check for a dislodged tray present sensor.
Is the sensor dislodged?
Replace the tray 1 sensor. If
the 650-sheet tray is
affected replace the
650-sheet drawer assembly.
If the 550-sheet assembly is
affected, replace the entire
550-sheet assembly.
Contact the next level of
support.
4
Does the message Tray (x) Missing fail to
appear when the tray is pulled out?
Go to step 5. Problem resolved.
JHVPS1
Pin Voltage
7 +3.3 V dc
10 +3.3 V dc
11 +3.3 V dc
13 +24 V dc
14 Ground
16 Ground

Lexmark X548 Series Specifications

General

Brand	Lexmark
Model	X548 Series
Category	All in One Printer
Language	English