Fuse PCB
J62
J51_14
J51_2
J51_1
Heater drive PCB
Thermal switch
(TP1)
Heat retaining heater (H3)
DC controller PCB
H3_ON
J105A_1
H1_ON
J105A_14
H2_ON
J105A_13
Main thermistor
(TH1) (non-contact)
Sub heater (H2)
Main heater (H1)
F-11-8
Chapter 11
Sub thermistor
(TH2)
11-9