Error Name/Error Condition/Major Cause/Solution
to foreign materials, replace the connectors or the units including the
connectors.
• Triac defective
Disconnect the power cord and check that the resistance between terminals
T1 and T2 of the triac TRA31 and triac TRA41 on the PSU (PCB18) are
several Mega-Ohms and not shorted. If failed, replace the PSU (PCB18).
• Fusing unit defective
1. Check that no paper jam is present.
2. Reconnect the following connectors.
• Fusing Unit – Fusing Thermistor Connection PCB connector
• Fusing Thermistor Connection PCB – IOB (PCB17) connector
3. If the connector is broken, shorted, or grounded, replace the connector.
4. Replace the fusing unit.
• Fusing thermistor connection PCB defective
Replace the fusing thermistor connection PCB.
• IOB (PCB17) defective
1. Update the engine software to the latest version.
2. Replace the IOB (PCB17).
• PSU (PCB18) defective
1. Reconnect the following connector.
• PSU (PCB18) – IOB (PCB17) connector
2. Replace the PSU (PCB18).
• Fusing lamp defective
Replace the fusing unit.
Error Name/Error Condition/Major Cause/Solution
Fusing Thermistor (End) Disconnected Error
Input from fusing thermistor (end) (TS1) is 1019 or more (A/D value) continuously
for 4 seconds.
• Connector defective or disconnected
• Connector pin defective
• Triac defective
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