Lexmark 5021-0XX - Manual (Page 173)

Diagnostic information 2-95
5021-0XX
Tray empty service check
Step Questions / actions Yes No
1 Remove paper tray from
printer. Press bottom of
spring platform latches
located in rear corners of
paper tray. This releases
spring platform of paper
tray. Ensure tray is raising
paper after insertion. Is tray
working properly? Go to step 2. Replace paper
tray.
2 Ensure paper empty
sensor flag swings with
ease and is not broken or
damaged. Is flag working
properly? Go to step 3. Replace paper
guide (C)
assembly . See
“Paper guide
(C) assembly
removal” on
page 4-47
.
3 Turn printer off and remove
I/O board shield. See
“I/O
board removal” on
page 4-70
for steps to
remove I/O board shield. Is
cable properly connected
to I/O board connector
DCN16?
Go to step 4. Properly connect
cable.
4 Reconnect operator panel.
Turn printer on. Touch
negative lead of voltmeter
to metal bracket that holds
I/O board to obtain ground.
Touch positive lead to
DCN16 pin 7 to ensure 5
VDC is being supplied to
paper empty sensor. Is 5
VDC present? Go to step 5. Go to step 8.
5 Insert empty paper tray into
printer. Check voltage level
on DCN16 pin 8. Is 5 VDC
present? Go to step 6. Go to step 7.