Electrical Adjustments
SM3226-1 – 10FEB97
5–7
Emitter Intensity of Film Sensors IL1, IL2, and IL3
To Check:
Warning
Dangerous Voltage.
[1] De-energize the LASER PRINTER.
[2] Remove the BACK IMAGE UNIT COVER. If
necessary, see the procedure on Page 2–3.
[3] Open the SEQUENCE BOARD SHIELD.
[4] Disconnect CONNECTORS J211, J212 and J213 from the DRIVER BOARD.
[5] Connect the DIGITAL MULTIMETER, TL-3386, to the following test points on the DRIVER BOARD:
IL1: Between CP5 and P213 - PIN7 for the SLOW SCAN FILM SENSOR
IL2: Between CP5 and P211 - PIN7 for the FILM PROCESSOR ADAPTER FILM SENSOR
IL3: Between CP5 and P212 - PIN9 for the TRANSPORT GUIDE PLATE JAM SENSOR
[6] Check that the resistance is 600
Ω ±
10
Ω
.
Sensor
Sensor/ Emitter
Symbol
To measure resistance, place
meter between COM and +
To adjust
resistance, rotate
Slow Scan Sensor
PHT2/IL1
CP5
P213, pin 7
VR3
Processor Adapter
Sensor
PHT3/IL2
CP5
P211, pin 7
VR4
Transport Sensor
PHT1/IL3
CP5
P212, pin 9
VR13
H129_0601AC
SHIELD
BOARD
SEQUENCE
H129_0601ACA