Toshiba e-STUDIO350 Service Handbook page 504

[C480] IGBT high temperature
1. Check the operation of the IH board cooling fan
Check if the IH board cooling fan is rotating normally. (Is the connector securely connected?)
2. Check the IH board
(1) Check if the IGBT or IGBT radiation plate are normal. (Is the radiation plate securely attached?)
(2) Check if the conductor pattern on the board is short circuited or open circuited.
(3) Replace the IH board.
3. Clear the status counter
Change the values "12", "15" or "18" of the status counter (08-400) to "0".
* The status counter value is as follows in the following cases. Change them to "0" respectively.
• The error occurred before the temperature of the fuser roller reaches 40°C: "12"
• The error occurred before the equipment has become ready: "15"
• The error occurred when the equipment is in the ready state or during printing: "18"
[C490] IH circuit or coil is abnormal
1. Check the IH board
(1) Check if the conductor pattern on the board is short circuited or open circuited.
(2) Replace the IH board.
2. Check the IH coil
(1) Check if the coil is broken or shorted.
(2) Replace the IH coil.
3. Clear the status counter
Change the values "13", "16" or "19" of the status counter (08-400) to "0".
* The status counter value is as follows in the following cases. Change them to "0" respectively.
• The error occurred before the temperature of the fuser roller reaches 40°C: "13"
• The error occurred before the equipment has become ready: "16"
• The error occurred when the equipment is in the ready state or during printing: "19"
[C470], [C480] and [C490] can be cleared by turning OFF and ON the power as long as the problem
was solved, and the status counter does not have to be changed to "0". The value of the status
counter remains until the next service call overwrites the value.
e-STUDIO350/352/353/450/452/453
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