Toshiba e-STUDIO2330C Service Handbook page 335

[C443/C445/C446/C447/C449] Heater lamp abnormality after abnormality judgment
1,2,3,4. Check the thermopiles, Heater and LGC board
Check the above components following the procedures 1, 2,3 and 4 for [C411/C412].
5. Clear the status counter
Change the current status counter value (08-400) "3", "5", "6", "9", "19", "21", "22", "23", "24", "25", "27",
"32" or "29" to "0" for [C44X], taking the same procedure as that for [C41X].
• The status counter value is as follows in the following cases.
- The error occurred during warming-up: "3", "5" or "6"
- The error occurred after the equipment has become ready: "7"
- The temperature detected by the fuser belt center thermopile is 220°C or higher, the
temperature detected by the side thermopile is 230°C or higher or the temperature detected
by the front thermopile is 250°C or higher: "9", "19", "21", "22", "23", "25", "27" or "29".
- The error occurred during printing: "24" or "25"
- The error occurred during energy saving: "27"
- A paper jam occurred: "29"
[C448] Heater lamp lights continuously for a certain period of time when the pressure roller
temperature during ready status is higher than the specified
1. Check the power supply and fuser unit
(1) Check if the fuser unit is installed properly.
(2) Check if foreign matter or paper in the fuser unit is plugging up the monitoring opening of the
fuser belt thermopile.
(3) Check if the opening of the fuser belt thermopile of the equipment is plugged up.
(4) Check if the connectors of the power supply are disconnected (power supply unit AC output
connector CN409 and LGC Interface connector CN403).
(5) Check if the power supply unit is abnormal.
* Replace the power supply unit.
2. Check the LGC board
(1) Check if the connector CN333 is disconnected.
(2) Check if the conductor pattern on the LGC board is short circuited or open circuited.
(3) Replace the LGC board.
3. Clear the status counter
After repairing the matter which caused the error [C448], perform the following:
(1) Turn the power ON while [0] and [8] are pressed simultaneously.
(2) Key in "400", then press the [START] button.
(3) Change the displayed current status counter value "32" to "0", then press [ENTER] or
[INTERRUPT] (to cancel C448).
(4) Turn the power OFF and then back ON. Make sure that the equipment enters the normal status.
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ERROR CODE AND TROUBLESHOOTING
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