Problem Symptoms And Suggested Actions; Processor Errors; X- Y Servo Errors - MUTOH SC-550 Maintenance Manual

4.3. Problem symptoms and suggested actions.

4.3.1. Processor errors.

PROBLEM SYMPTOM
- Error code 0
- Watch dog timeout
- Bus trap error
- Address trap error
- Illegal instruction (MC68020)
- Zero divide
General processor failure
-
- Interrupt failure
1010 CPU failure
-
- 1111 CPU failure
- DRAM error
SRAM error
-
- EPROM checksum error
- EEPROM error
Extended RAM error
-

4.3.2. X- Y Servo errors.

PROBLEM SYMPTOM
OUT of SYNC X
-
- OUT of SYNC Y
- X position Timeout
Y position Timeout
-
- X over current
Y over current
-
- X overload
- Y overload
X Encoder fail
-
- Y Encoder fail
Encoder failure
-
- Driver failure
POSSIBLE CAUSE
- Poor connection between
main and terminal board.
- Bad EPROM's
- Bad EEPROM
- Mainboard failure
- EPROM data is changed
- EEPROM data is changed
Poor extended RAM
-
connection
- Bad extended RAM
-
POSSIBLE CAUSE
Defective motor / encoder
-
- Loose drive pulley
- Failure in drive circuit
Poor connection of motor/
-
encoder
Too much friction in X or Y
-
axis
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Maintenance Manual – SC Cutting Plotter
SUGGESTED ACTIONS
- Check cable and connection
- Check pins and position of
EPROM and EEPROM.
Reinstall EPROM and
EEPROM.
- Replace Mainboard
- Replace EPROM set
- Perform INIT 1
- Perform INIT 2
- Replace EEPROM
-
Check connection
-
- Replace extended RAM
SUGGESTED ACTIONS
Replace motor / encoder
-
- Fix pulley or replace motor /
encoder
Replace main PC board
-
- Check cables and
connections
- Check X and Y movement
AP-74030, Rev / B