Electrical Adjustments
SM3226-1 – 10FEB97
5–17
Permanent Emitter Pulse Cycle
[23] Adjust the correct POTENTIOMETER for each sensor until the value is within the above specification.
IL1: VR7 for the SLOW SCAN FILM SENSOR
IL2: VR8 for the FILM PROCESSOR ADAPTER FILM SENSOR
IL3: VR9 for the TRANSPORT GUIDE PLATE FILM JAM SENSOR
Note
The Channel B signal should be a constant low.
[24] Insert a FILM between the emitter and receiver of each sensor to see that the signal on Channel B goes high as
FILM is detected.
[25] De-energize the LASER PRINTER.
[26] Connect J218.
Sensor
Symbol
To observe waveform, place oscilloscope
between GND and PROBE
To adjust waveform
period, rotate
Slow Scan Sensor
IL1
CPG5
LD2
VR7
Film Processor
Adapter Sensor
IL2
CPG5
LD3
VR8
Transport Sensor
IL3
CPG5
LD1
VR9
10 ms.
H129_1912BC
GND
Time
Emission
3.5 V
Approx.