Toshiba e-STUDIO2330C Service Handbook page 336

[C465/C466/C467/C468] Pressure roller thermistor abnormality after entering ready status
1. Check the pressure roller thermistor
(1) Check if the connector is disconnected.
(2) Check if the pressure roller center/rear thermistor is installed properly.
(3) Check if the harnesses of the pressure roller center and rear thermistors are open circuited.
2. Check the power supply unit and fuser unit
(1) Check if the fuser unit is installed properly.
(2) Check if the pressure roller lamp is open circuited. (Check if the pressure roller lamp has electric
continuity.)
(3) Check if the connector of the pressure roller lamp is disconnected.
(4) Check if the thermistor is open circuited.
(5) Check if the connectors of the power supply (power supply AC output connector CN409, LGCI/F
connector CN403) are disconnected.
(6) Check if the power supply unit is broken.
* Replace the power supply unit if it is broken.
3. Check the LGC board
(1) Check if the connector CN333/CN345 is disconnected.
(2) Check if the conductor pattern on the board is short circuited or open circuited.
(3) Replace the LGC board.
4. Clear the status counter
Change the current status counter value (08-400) "5", "6", "8", "18", "20", "26", "28", "33" or "34" to "0"
* The status counter value is set as follows in the following cases.
• The error occurred during warming-up: "5" or "6"
• The error occurred after the equipment has become ready: "33"
• Regardless of the equipment's status (i.e. during warming-up or in ready status), when the
temperature detected by the pressure roller thermistor is 210°C or higher: "8", "18", "20", "26" or
"28".
• The error occurred during printing: "34"
[C4B0] IGBT overheating abnormality
1. Check the LGC board
(1) Check if the conductor pattern on the board is short circuited or open circuited.
(2) Check if SRAM is mounted.
(3) Replace the LGC board.
2. Clear the status counter
Change the values "30" or above, or "4" of the status counter (08-400) to "0".
e-STUDIO2330C/2820C/2830C/3520C/3530C/4520C
ERROR CODE AND TROUBLESHOOTING
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