Toshiba e-STUDIO 5540C Service Manual page 881

Check item
Fuser unit
Status counter
Replace parts
IH board
LGC board
[C4B0] Fuser unit counter abnormality
Classification
Fuser unit related service call
Check item
LGC board
Status counter
Replace parts
LGC board
[C4B1] Fuser unit voltage judgment abnormality
Classification
Fuser unit related service call
Check item
Fuser unit
LGC board
Switching regulator
IH board
Replace parts
Fuser unit
LGC board
Switching regulator
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• Unit check
• Connector check
• Harness check
1. [0], [8] Power ON.
2. Key in "2002", then press [START].
3. Change the current status counter value (08-2002) "17" to
"0".
• SRAM check
• Board check
1. [0], [8] Power ON.
2. Key in "2002", then press [START].
3. Change the values "72" or above, or "4" of the status
counter (08-2002) to "0".
Errors in the IH board, FIL board and fuser unit when the
destination selection of the equipment is incorrect.
• Unit check
• Connector check
• Harness check
• Connector check (CN305, CN306, CN330)
• Board check
• Connector check (CN404)
• Harness check
• Connector check
• Board check
e-STUDIO5540C/6540C/6550C/5560C/6560C/6570C
8 - 125
Measures
Remarks
Error item
Measures
Remarks
Error item
Measures
Remarks
ERROR CODE and TROUBLESHOOTING
8