MUTOH SC-550 - Cutting Head Errors; Other Errors

Maintenance Manual – SC Cutting Plotter
27 AP-74030, Rev / B
4.3.3. Cutting head errors.
PROBLEM SYMPTOM POSSIBLE CAUSE SUGGESTED ACTIONS
- Position Timeout Moving Coil
(MC)
- OVER CURRENT Moving Coil
(MC)
- A/D failure Moving Coil (MC)
- Nose piece of knife holder
(XPC model) not fixed
- Blade is too far out
- Sheet off mechanism blocks
UP/DOWN movement (Not on
SC-550)
- Head flex cable bad or poor
connection
- Bad cutting head
- Failure in drive circuit
-
- Check knife holder
- Check blade depth
- Check sheet off mechanism
(Not in SC-550)
- Check connections or replace
head flex cable
- Replace cutting head
- Replace main PC board
4.3.4. Other errors.
PROBLEM SYMPTOM POSSIBLE CAUSE SUGGESTED ACTIONS
System is dead :
- No movement
- No LED’s lighted
- Power failure
- Defective Power supply (P/S)
- Defective Mainboard
- Check power cord
- Check wall outlet
- Check fuse on P/S
- Check LEDs on P/S
- Replace P/S
- Replace mainboard
Some LED’s lighted but no
movement of the motors and
cutting head.
- Defective EPROM’s
- Defective EEPROM
- Defective mainboard
- Poor connection between
main and terminal board
- Replace EPROM’s
- Replace EEPROM
- Replace mainboard
- Check cable connections
- Plotter powers on, head
UP/DOWN initialises but no
movement of motors.
- Transparent cover is not
closed
- Transparent cover switch
defective
- Close the cover
- Check or replace cover switch
Plotter does not shuffle media. - Pressure roller lever is not
DOWN
- Bad lever sensor
- Both media sensors are not
covered
- Media sensors dusty or bad
- Lower the lever
- Check the lever sensor
- Load media properly
- Clean or replace media
sensors
Illegal mainboard revision (LED
code on LED bar)
- Mainboard version is not
compatible
- Use correct mainboard
Wrong mainboard (LED code on
LED bar)
- Mainboard from SC-550 is
used in SC-series or vice
versa
- Use correct mainboard