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● Code :
28-001
28-002
28-003
● Symptom : The red LED is turning on and the machine does not operate.
● Possible Cause: :
The transfer belt unit is installed in the machine but the machine could not read information from CRUM.
CRUM information is different from machine.
● Troubleshooting method :
1. Check if the CRUM terminal of the transfer belt unit is contaminated. Clean the contact point.
Transfer Belt Unit CRUM
2. Check if the Transfer Belt Unit CRUM Harness is defective and connected on engine board properly.
Transfer Belt Unit CRUM Harness
3. Replace the CRUM to the normal thing and test it. If the CRUM is defective, replace the transfer belt
unit.
Troubleshooting
● Error message :
Transfer belt is not installed. Install it.
Transfer belt is not compatible for this machine. Check user's guide.
4-155
CRUM terminal
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Table of Contents
Troubleshooting
