Unrecoverable Errors; Processor Errors; Y Servo Errors - MUTOH SC-550 Maintenance Manual

4.2. Unrecoverable errors.

Unrecoverable errors can be recognized when all LED's are flashing and the machine has stopped working.
After pressing the [ENTER] key VERY SHORT (just touch it ones) the error code appears on the LED bar
(NOT flashing).
To clear the error message, the machine needs to be powered OFF and ON again. (Wait ± 7 seconds
between power OFF/ON).
Refer to the following chart for error code explanation :

4.2.1. Processor errors.

Error Code 0
Watch dog time out
Bus trap error
Address trap error
Illegal instruction
(MC68020)
Zero divide
General processor failure
EPROM check-sum error
Interrupt failure
1010 CPU failure
1111 CPU failure
DRAM error
SRAM error
Extended RAM error
EEPROM error
EEPROM error
4.2.2. X – Y Servo errors.
OUT of SYNC X
OUT of SYNC Y
X POSITION timeout
Y POSITION timeout
X Over current
Y Over current
X Encoder fail
Y Encoder fail
X Overload
Y Overload
Driver failure
Encoder failure
ERROR CODE
10% 20% 30%
X
X
X X
X
X X
X X
X X X
X
X X
X X X
X X
X
X X
X
X
ERROR CODE
10% 20% 30%
X X
X X
X X X
X
X
X X
X
X X
X X X
X X
X X
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Maintenance Manual – SC Cutting Plotter
40% 50% 60%
X
X
X
X
X
X
X X
X X
40% 50% 60%
X
X
X
X
X
X
X
X
X X
X X
X X
X X X
70% 80% 90%
X
70% 80% 90%
AP-74030, Rev / B
100%
100%