Step
Questions / actions
2
Turn the printer off, and remove the rear
shield. See
"Rear shield removal" on
page
4-7. Disconnect the operator panel
assembly cable at JOPP1 on the controller
board. Turn on the printer, and verify the
following voltages:
Are the voltage values approximately correct?
3
Check continuity of the operator panel
assembly cable.
Is there continuity?
Operator panel display blank, printer beeps five times and pauses
Step
Questions / actions
1
Turn off the printer, and remove the rear
shield. See
"Rear shield removal" on
page
4-7. Disconnect the cable at JOPP1 on
the controller board. Verify the following
values:
Are all these values approximately correct?
2
Check for continuity in the operator panel
cable connector.
Do all the conductors indicate continuity?
Y112730-2
JOPP1
Pin
Voltage
2
+5 V dc
4
Ground
5
+5 V dc
6
+3.3 V dc
7
Ground
JOPP1
Pin
Voltage
1
0 V dc
2
+5 V dc
3
0 V dc
4
Ground
5
+5 V dc
6
+3.3 V dc
7
Ground
Yes
Go to step 3.
Replace the operator panel
assembly. See
"Operator
panel removal" on
page
4-98.
Yes
Go to step 2.
Replace the operator panel.
See
"Operator panel
removal" on page
4-98.
No
Replace the controller
board. See
"Controller
board removal" on
page
4-18.
Replace the operator panel
cable. See
"Op panel
cable" on page 4-101
No
Replace the controller
board. See
"Controller
board removal" on
page
4-18.
Replace the operator panel
cable. See
"Op panel
cable" on page 4-101
Diagnostic information
2-43