Kyocera TASKalfa 6501i Service Manual page 463

Code Contents
6730 Abnormally high fuser IH
PWB temperature 1 (IGBT1)
The input detect temperature
is higher than 115°C/ 221 °F.
6740 Abnormally high fuser IH
PWB temperature 2 (IGBT2)
The input detect temperature
is higher than 115°C/ 221 °F.
Related parts
Fuser IH PWB
Engine PWB
Fuser IH PWB
Engine PWB
1-4-103
Check procedures/
corrective measures
1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Fuser IH PWB ( YC4) and Engine PWB
(YC26)
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
3. Replace the fuser IH PWB (see page 1-
5-95).
1. Check the engine software and upgrade
to the latest, if necessary.
2. Replace the engine PWB (see page 1-5-
83).
1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Fuser IH PWB ( YC4) and Engine PWB
(YC26)
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
3. Replace the fuser IH PWB (see page 1-
5-95).
1. Check the engine software and upgrade
to the latest, if necessary.
2. Replace the engine PWB (see page 1-5-
83).
2N8/2N7