HP LaserJet Enterprise M552 - Page 53

Figure 1-8 Fuser temperature-control circuit
/ZEROX
/RLD2
FSRD_MAIN
FSR_TH_SUB_F
FSRD_SUB
RLD1
RL6001
RL6002
H1, H2
TH3
TH2
TH1
FSR_TH_MAIN
FSR_TH_SUB_R
FSR_SNS
FSR_TYPE100
FSR_TH_SUB_R
FSR_TH_MAIN
+24VC
+24VB
+24VC
TP
AC input
DC controller
Low-voltage
power supply
Fuser
Pressure roller
Fuser sleeve ass’y
Zerocross
circuit
Fuser heater
control circuit
Relay control
circuit
Fuser
power supply
Fuser heater
safety circuit
Relay control
circuit
ENWW Engine-control system 25