Filter
Top Products
ENWW Safety information 17
Safety
Overall protection circuit
Protection by CBR1 and CBR2 (circuit breakers)
CBR1 and CBR2 interrupt the AC line instantaneously when an excessive current flows due to a
short in the AC line.
CAUTION The CBR1 and CBR2 functions must not be deactivated under any
circumstances.
Protection by L2, L3 and L4 (fuser heater lamps) overheating prevention circuit
Protection by software
The output voltage from TH1 (fuser temperature sensor 1) is read by the CPU. If this voltage is
abnormal, L2 (fuser heater lamp 1), L3 (fuser heater lamp 2), L4 (fuser heater lamp 3) and RL1
(main relay) are turned off.
CAUTION Do not change the gap between the roller and TH1. When replacing TH1, check
the specified mounting dimensions. The RL1 function must not be deactivated
under any circumstances.
NF
CBR2
CBR1
L3
L4
DCPS
PRCB
L2
Control
section
TH2
TH1
RL1
RL1
TS1
TS2
AC driver
section