How tokonica minolta bizhub ERROR code C3451 C3452 C3751 C3752 C3851 C3852 250

konica minolta
bizhub 200/250/350/360/420/500.
develop 200, 250, 350, 360, 420, 500 reset.

Code: C3451, C3452, C3751, C3752, C3851, C3852.

Fusing Warm-Up Failure (Main) The Fusing Roller Thermistor does not detect the required temperature within 30 sec. after a warmup cycle has begun; therefore, the copier does not complete the warm-up cycle. The temperature of the Fusing Rollers does not reach the required level even after the set period of time has elapsed during a warm-up cycle.

Remedy:
1 Check that the H1 comes on when the Main Power Switch is set to ON, and correct or replace as necessary.
2 Check that the H2 comes on when the Main Power Switch is set to ON, and correct or replace as necessary.
3. Check the installation of the TH1 and the TH2, and correct or clean as necessary.
4. Check the operation of
the TH1. Remove CN80 (4P), and then check that the resistance across CN80-2 and-3 on the Thermistor is infinity.
5. Check the operation of the TH2. Remove CN81 (4P), and then check that the resistance across CN81-2 and -3 on the Thermistor is infinity.
6. Check the continuity of the H1. Correct or replace as necessary.
7. Check the continuity of the H2. Correct or replace as
necessary. 8 Change PU1. 9 Change PWB-A.

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