MUTOH SC-550 - Problem Symptoms and Suggested Actions

Maintenance Manual – SC Cutting Plotter
26 AP-74030, Rev / B
4.3. Problem symptoms and suggested actions.
4.3.1. Processor errors.
PROBLEM SYMPTOM POSSIBLE CAUSE SUGGESTED ACTIONS
- 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
- Poor connection between
main and terminal board.
- Bad EPROM’s
- Bad EEPROM
- Mainboard failure
- Check cable and connection
- Check pins and position of
EPROM and EEPROM.
Reinstall EPROM and
EEPROM.
- Replace Mainboard
- EPROM checksum error - EPROM data is changed - Replace EPROM set
- EEPROM error - EEPROM data is changed - Perform INIT 1
- Perform INIT 2
- Replace EEPROM
-
- Extended RAM error - Poor extended RAM
connection
- Bad extended RAM
-
- Check connection
- Replace extended RAM
4.3.2. X- Y Servo errors.
PROBLEM SYMPTOM POSSIBLE CAUSE SUGGESTED ACTIONS
- 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
- Defective motor / encoder
- Loose drive pulley
- Failure in drive circuit
- Poor connection of motor/
encoder
- Too much friction in X or Y
axis
- Replace motor / encoder
- Fix pulley or replace motor /
encoder
- Replace main PC board
- Check cables and
connections
- Check X and Y movement