Service manual

Chapter 9
9-4
left door has opened.
T-9-2
F-9-8
9.3.1.3 Rated Output of the Power Supply PCB
0011-2195
iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
T-9-3
9.3.2 Protection Function
9.3.2.1 Protective Mechanisms
0011-2196
iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
The power supply PCB is provided with an overcurrnet/overvoltage protection function to automatically cut off the output voltage when a trouble such as a short
circuit occurs on in the load.
When the overcurrnet/overvoltage protection function is activated, turn off the main power switch, solve the trouble with the load, and then turn on the main power
switch.
Further, the power supply circuit has two fuses which blow to stop power supply when an excessive current flows in the AC line.
Part Name Function
Power supply PCB Generates DC power from AC power.
Option power supply PCB (option) Generates DC power from AC power for the options.
Main power switch (SW1) Supplies AC power to the power supply PCB.
Front cover switch (SW2) Detects opening/closing of the front cover and cuts off +24 VR.
Left door switch (SW3) Detects opening/closing of the left door and cuts off +24 VR.
Output 24V 5V 5VR 3.3V 3.3VR
Rated output voltage 24V 5.1V 5.1V 3.4V 3.4V
Output voltage tolerance +10%ÅA-5% +3%ÅA-4% +3%ÅA-4% +3%ÅA-3% +3%ÅA-3%
Rated output current 5.5A 1.0A 2.0A 2.5A 1.0A
Overcurrent protection trigger current 8.0A 2.5A 4.0A 5.0A 2.0A
Overvoltage protection trigger voltage 32.5V 8.0V 8.0V 5.5V 5.5V
P1
NF NF
Power supply PCB
: AC
: DC
F1 F2
SW1
TP1
H2
H1
Heater drive
circuit
RL1
SW2
SW3
Reader
controller
PCB
Low-voltage
power supply
circuit
+24V +24VR
Option
power supply
PCB
Option
- Finisher
- Inner 2-way tray
- Duplex unit
- Cassette feeding
module
+24Vop
DC
controller
PCB
Image
Processor
PCB
Control panel
FAX board (option)
Motor
Sensor
DADF
Laser unit
Motor
Clutch
Solenoid
Fan
Sensor
HVT
PCB
+24V
+5VR
+3.3VR
+5V
+3.3V
+24VR
+24V
+5VR
+3.3VR
+24VR
+5VR
+3.3VR