Samsung ProXpress M453x series Service Manual page 129

• Deve fan :
b) If 24V power is not generated,
• Measure the 24V power on the SMPS board. If the SMPS
(110V)) is defective, replace it.
• If the SMPS board is normal, replace the main
JC92–02801A(M4530NX)).
5) If the fan operation is normal but the error persists,
a) Check the yellow line signal with DVM.
b) Check fan operation as connected or disconnected.
• If the Lock signal is 0V continually, check the harness. If the harness is OK, replace the main board.
• If the signal value is different from the table above, replace the fan.
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JC31–00086A
board(JC44-00092C (220V) / JC44-00091C
board(JC92–02802A(M4530ND) /
4. Troubleshooting
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