Operator Panel Display Blank, Five Beeps, Led On; Operator Panel Display All Diamonds, No Beeps; Operator Panel Display All Diamonds, Five Beeps - Lexmark C52 series Service Manual

5022-xxx

Operator panel display blank, five beeps, LED on

Service tip: The printer has detected a problem with the system card, the operator panel assembly cable (part of
the top cover access assembly), or the operator panel assembly if POST does not complete. The printer emits
five beeps, and sticks in a continuous pattern until the printer is turned off.
Step Questions / actions
1 Check for ground between JOPP1 pin 4 and
ground.
Is the voltage approximately 0 V dc?
2 Check the operator panel assembly cable.
Is the cable damaged?

Operator panel display all diamonds, no beeps

Step Questions / actions
1 Check the operator panel assembly cable.
Is the cable damaged?
2 Measure the voltage between JOPP1 pin 2
and ground on the system card.
Is the voltage approximately +5 V dc?

Operator panel display all diamonds, five beeps

Step Questions / actions
1 Check the operator panel assembly cable.
Is the cable damaged?
Measure the voltage between JOPP1 pin 2
2
and ground on the system card.
Is the voltage approximately +5 V dc?
2-54
Service Manual
Yes
Replace the operator panel
assembly. See "Operator
panel assembly removal"
on page 4-23.
Replace the top cover
access assembly. See "Top
access cover assembly
removal—model C52x
only" on page 4-28 or "Top
access cover assembly
removal—model C53x
only" on page 4-32.
Yes
Replace the top access
cover assembly. See "Top
access cover assembly
removal—model C52x
only" on page 4-28 or "Top
access cover assembly
removal—model C53x
only" on page 4-32.
Replace the operator panel
assembly. See "Operator
panel assembly removal"
on page 4-23.
Yes
Replace the top access
cover assembly. See "Top
access cover assembly
removal—model C52x
only" on page 4-28 or "Top
access cover assembly
removal—model C53x
only" on page 4-32.
Replace the operator panel
assembly. See "Operator
panel assembly removal"
on page 4-23.
No
Go to step 2.
Replace the system card.
See "System card
removal" on page 4-92.
No
Go to step 2.
Replace the system card.
See "System card
removal" on page 4-92.
No
Go to step 2.
Replace the system card.
See "System card
removal" on page 4-92.