Olivetti d-Copia 1600, Service Manual

Page: 176 / 242

2HA/2HB
2-1-12
2-1-6 Fuser section
The fuser section consists of the parts shown in figure. When paper reaches the fuser section after the transfer process,
it passes between the press roller and heat roller, which is heated by fuser heaters M or S (FH-M or FH-S). Pressure is
applied by the fuser unit pressure springs so that the toner on the paper is melted, fused and fixed onto the paper. The
heat roller is heated by fuser heaters M or S (FH-M or FH-S) inside it; its surface temperature is detected by the fuser ther-
mistor (FTH) and is regulated by the fuser heaters turning on and off.
If the fuser section becomes abnormally hot, fuser thermostat (FTS) operates shutting the power to the fuser heaters off.
When the fuser process is completed, the paper is separated from the heat roller by its separation claws and is conveyed
from the copier to exit and switchback section.
Figure 2-1-16 Fuser section
Figure 2-1-17 Fuser section block diagram
(1) Left fuser unit
(2) Right fuser unit
(3) Press roller
(4) Heat roller
(5) Fuser heater M (FH-M)
(6) Fuser heater S (FH-S)
(7) Heat roller separation claw
(8) Fuser thermostat (FTS)
FH-M
FH-M FTH FH-S
YC23-2
YC6-2
YC6-1
YC6-3
LIVE
COM
PSPWB
AC
YC2-7 YC2-8
YC21-8 YC21-7
Heat roller
FTS
FTH
EPWB
FH-S