Printer No Power Service Check - Lexmark X500n Service Manual

7100-XXX

Printer no power service check

Note: If secondary paper feed assembly or duplex unit is installed, disconnect or remove before checking
base printer operation.
Step Questions / actions
1 Reset printer, and listen for any activation of
motors and for power supply fan. Look at
operator panel to see if anything displays.
Do you hear sounds, or does the operator
panel display anything?
2 Disconnect and check continuity of power
cord. Is power cord good?
3 Ensure RIP board is properly installed. Is
RIP board installed correctly?
4 Replace RIP board. See
removal" on page
persist?
5 Turn printer off, and check line voltage to
ensure that it is present and correct. Is
voltage present and correct?
6 Remove items (see
removal" on page
printer to expose power supply bracket.
Using an ohmmeter, ensure power switch is
good. Is power switch good?
7 Check LVPS ACN1, ACN2, and ACN4 for
proper connection. Are cables properly
connected to LVPS?
2-38
Service Manual
"System board
4-36. Does problem
"System board cage
4-38) from left side of
Yes
Go to step 2.
Go to step 3.
Go to step 4.
Replace engine controller
board. See "Engine
controller board removal"
on page 4-34.
Go to step 6.
Go to step 7.
Replace LVPS. See "Low
voltage power supply
(LVPS) with cage
removal" on page 4-40.
No
Go to step 3.
Replace power cord.
install RIP board.
Problem solved.
inform customer.
Replace power supply
bracket. See "Low voltage
power supply (LVPS) with
cage removal" on
page 4-40 for steps to
remove power supply
bracket.
Properly connect cables.