HP LaserJet II Serie Manual De Instrucciones página 206

HP 33440/HP 33449 COMBINED SERVICE MANUAL
Paper Exit Sensor (PS331) Functional Check
The Paper Etit Sensor PS331 is lomted on the Mt Sensor PCA (see Figure 7-16), This sensor
and an associated ~t Sensor Arm detect paper motion as the paper enters and etits the Fusing
Assembly. The main microprocessor on the DC Controller uses this etit flag signal (PDP) for
monitoring paper movement through the printer.
Table 7-16. Paper Exit Sensor (PS331) Check
1. Is the Etit Sensor Arm or photointerrupter Visually inspect and replace as necessary.
damaged or broken?
2. Does the Etit Sensor indicate the presence
Perform the fo~oting Operational and
of paper to the DC Controller PCA?
Electrid checks.
Exit Sensor
Photointerrupter
o
0
0
OOOOO.OOO
Exit Sensor
Arm Counter
Measure the Voltage at this pin
Weight
while moving the Photointerrupter.
7-42