OF2 Power On Self Test
(POST) RAP
NOTE: Refer to BSD 1.2 and BSD 2.1 while
using this RAP.
This RAP is used when the logic detects a
fault during the Power On Self-test (POST).
The printer does not initialize and the Control
Panel displays a 1,2, 3, 4, 5, 6, or 7.
Initial Actions
• Ensure that the EPROMs and the NVM
are seated fully on the Main PWB, A3.
• Ensure that the 40-conductor ribbon cable,
connected between the Driver PWB
A2J206 and the Main PWB A3J313, is
seated fully at each connector.
• Ensure that the power cable, connected
between the Driver PWB A2J207 and the
Main PWB A3J312 is seated fully at each
connector.
• Ensure that the 26-conductor ribbon cable,
connected between the Main PWB
A3J301 and the Control Panel User
Interface PWB A32J1, is seated fully at
each connector.
Procedure
Refer to the Table 1.
Table 1. Power On Self Test (POST) Probable Cause / Corrective Action
The number that is
Displayed on the
Control Panel.
1
or 2
3
4
5
6
7
Probable Cause
There is a fault in the RAM
memory.
a) The contents of the
Control EPROMs does
not agree with the
checksum.
b} The Main PWB is
defective.
There is a fault in the Analog-
to-Digital Converter or the
Digital-to-Analog Converter.
There is a fault in the Main
PWB,
A3.
There is a fault in the Digital-
to-Analog Converter.
There is a fault in the printer
port output circuitry.
Corrective Action
Replace the Main PWB, A3, PL 1.1.
a) Replace both Control EPROMs
on the Main PWB, A3.
b) Replace the Main PWB, A3, PL
1.1.
Replace the Main PWB, A3, PL 1.1.
Replace the Main PWB, A3, PL 1.1.
Replace the Driver PWB, A2, PL 1.1.
If the problem persists, replace the
Main PWB, A3, PL 1.1.
Replace the Main PWB, A3, PL 1.1.
OF2 Power On Self Test (POST) RAP
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8830
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