Lexmark X500N, Service Manual

Page: 76 / 244

2-38
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 Yes No
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? Go to step 2. Go to step 3.
2 Disconnect and check continuity of power
cord. Is power cord good? Go to step 3. Replace power cord.
3 Ensure RIP board is properly installed. Is
RIP board installed correctly? Go to step 4. install RIP board.
4 Replace RIP board. See “System board
removal” on page 4-36 . Does problem
persist?
Replace engine controller
board. See
“Engine
controller board removal”
on page 4-34
.
Problem solved.
5 Turn printer off, and check line voltage to
ensure that it is present and correct. Is
voltage present and correct? Go to step 6. inform customer.
6 Remove items (see “System board cage
removal” on page 4-38 ) from left side of
printer to expose power supply bracket.
Using an ohmmeter, ensure power switch is
good. Is power switch good?
Go to step 7. Replace power supply
bracket. See
“Low voltage
power supply (LVPS) with
cage removal” on
page 4-40
for steps to
remove power supply
bracket.
7 Check LVPS ACN1, ACN2, and ACN4 for
proper connection. Are cables properly
connected to LVPS? Replace LVPS. See “Low
voltage power supply
(LVPS) with cage
removal” on page 4-40
.
Properly connect cables.