Lexmark X548 Series Service Manual

2-42 Service Manual
7525-63x
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Operator panel display is blank
Step Questions / actions Yes No
1 Check the cable connections between the RIP
board and the UICC, and check the
connections from the UICC to the display.
Are the cables properly connected?
Go to step 3. Go to step 2.
2
Reconnect the cables. POR the device.
Does this fix the problem?
Problem resolved. Go to step 3.
3
Using a multimeter, check the UICC cable for
continuity.
Is there continuity?
Go to step 5. Go to step 4.
4
Replace the defective cable. See “User
interface controller card cable removal” on
page 4-112.
POR the device.
Does this fix the problem?
Problem resolved. Go to step 5.
5
Are the LEDs on the operator panel lit? Go to step 6. Go to step 7.
6
Replace the display. See “LCD removal” on
page 4-100.
Does this fix the problem?
Problem resolved. Go to step 7.
7
Check connector JUIC1 on the RIP board for
the following voltages and grounds:
Do the voltages and ground readings
approximately match the table?
Go to step 9. Go to step 8.
8
Replace the RIP board. See “RIP board
removal” on page 4-19.
POR the device into Diagnostics mode.
Does this fix the problem?
Problem resolved. Go to step 9.
JUIC1
Pin Voltage
2 Ground
9 Ground
10 5.0 V dc
15 Ground
16 5.0 V dc
17 5.0 V dc
18 5.0 V dc

Lexmark X548 Series Specifications

General

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