Canon ImageRunner iR8500 Series User Manual

Chapter 5
5-16
F-5-23
T-5-12
5.3.3.2 Stabilizing the Scanning Lamp(iR105)
0006-9538
iR105
A transformer PCB has been added to increase the voltage supplied to the inverter power supply from 38 to 40 V so that the intensity of the scanning lamp
remains stable.
5.3.3.3 Controlling the Temperature by a Fluorescent Lamp Heater
0006-9428
iR105i/iR105+ / iR9070
The fluorescent lamp controls the area around the fluorescent lamp to 70 deg C to ensure a stable
light intensity.
Related Service Mode
COPIER>ADJUST>LAMP>L-DATA
(scanning lamp light intensity data input)
Use it to enter the setting recorded on the
service label if the result of CCD-ADJ is NG,
thereby determining FL-PWM.
Settings: 0 to 255
DC controller PCB
Inverter PCB
Scanning
lamp
Light
intensity
sensor
Fluorescent
heater
Temperature
sensor
Activation
voltage
Pre-heat voltage
Light intensity control PCB
Relay PCB
Transformer PCB
Voltage to suit the light intensity.
J506B
J852
J851
J853
J1002
J803
J1001
0 V
0 V
0 V
40 VU GND
38 VU GND
38 VU
24 VU
24 V
38 V
GND
GND
GND
FL-PWM
FL-ERR
FL-CLK
FL-TH
FL-GAIN
FL-REF
HEAT-ON
GND
FL-TH
FL-DTCT
FLON
PRH-PWM
PRH-ON
Pre-heat
output
control
Transformer
drive control
T1001
Fluorescent
lamp
transformer
Current
detection
Output
control
H5
Pulse signals used to drive the transformer (T1001).
1
2
3
4
5
6
7
8
9
10
11
12
13
1
2
3
4
5
1
2
3
4
5
6
6
7
8
9
10
11
12
13
12345 1234
12
1234
Error detection
When '0', pre-heat voltage is applied.
Pulse signals. Changing the pulse width increases/decreases the pre-heat voltage.
When '0' ,the scanner heater turns on.
Reference intensity level for comparison against FL-DTCT.
When '0', the fluorescent lamp turns on.
Pulse signals. Changing the pulse width increases/decreases the intensity of light.
Difference between FL-REF and FL-DTCT. FL-PWM is corrected based on this data.
Fluorescent lamp
heater temperature
Stabilizing the amount of
light of the scanning lamp.
Voltage rises from 38V to
40V.
To light intensity sensor
To temperature sensor/scanner
heater
Higher setting
Lower setting
Higher intensityLower intensity

Canon ImageRunner iR8500 Series Specifications

General

Brand	Canon
Model	ImageRunner iR8500 Series
Category	All in One Printer
Language	English