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Service Guide ML393/ML393CPlus
Chapter 4 Failure Analysis
4.6 FAULT ALARMS
4.6.01 General Information
When an error condition exists, the ALARM LAMP will flash. The operator panel is used to display printer
error conditions. The type of error condition can be determined by decoding the operator panel lamps.
Refer to the Alarm Codes Table in this section to identify both the error condition and the recommended
corrective action for each condition.
NOTE:
The Alarm Codes Table only applies in situations when the ALARM LAMP is flashing.
Alarm Codes Table
Print
Qualit
y
Character
Pitch
Alarm
Descriptio
n
Alarm
Code
Correctiv
e Action
LQ
NLQ
UT
L
15
17
20
PRO
P
ON
ON
MPU
Internal
RAM Error
11
Replace
control
board
ON
O
N
Program
ROM Error
12
Replace
Master
ROM
ON
O
N
ON
Resident
CG Error
13
Replace
control
board
ON
ON
Slave
ROM/RAM
Error
21
Replace
Slave
ROM
ON
O
N
Slave/Mas
ter
Matching
Error
22
Replace
Master/Sl
ave ROM
Содержание ML393C Plus
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