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2.
Inputs to the DC Controller (2/2)
DC controller PCB
when reflected light increases, voltage lowers.
when light from fluorescent lamp increases,
voltage lowers.
AE sensor _ Intensity
PCB
sensor
PCB
Control
wart
;
panel
Keys and LEDs are wired in a matrix on the control
panel PCB; the DC controller reads the key inputs
and turns on or flashes the LEDs.
Main switch
DIG1
HEATO
DiG1
Combinations of 3-bit signals are used to correct
Beal
the variations in the resistance of the fixing heater
HEAT2
in 7 settings.
Drum cartridge by
ho
a
PGP
:
PCB
{model with drum unit
replacement automatic
indicator function only)
Toner
level
antenna
23.
4951-1
- s2vAl-3
214-1
2
2h
TNMONI
when toner level drops, '0'.
J954-1
ay
Toner level
Composite
detection
power supply
PCB
PCB
Figure 3-104
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