HP LaserJet 4 Service Manual - Page 119
Sensor, Description, Table 5-2, Photosensor Locations
View all HP LaserJet 4 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 119 highlights
Table 5-2 Photosensor Signals Sensor PS1 PS2 PS3 PS4 PS5 PS6 PS7 Description Input/Registration Sensor - detects paper in pickup area PC tray (Tray 2) Paper-out Sensor - detects the presence of paper in the PC tray. Output/Fuser Exit Sensor - detects paper in fuser. MP Tray (Tray 1) Paper Out Sensor - detects the presence of paper in the MP tray (Tray 1). MP Tray (Tray 1) paper end - detects the trailing edge of paper fed from the MP tray (Tray 1). Optional Lower Cassette (LC or Tray 3) Paper-out Sensor - detects the presence of paper in the 500-sheet feeder. See Chapter 8 for location. Optional Envelope Feeder Paper-out Sensor detects the presence of paper in the envelope feeder. See Chapter 8 for location. PCA Paper Control PCA (J605) Paper Control PCA (J605) DC Controller (J208) Paper Control PCA (J701) Sensor PCA (J702) Paper Control PCA (J603) Paper Control PCA (J604) Figure 5-4 Photosensor Locations Functional Overview 5-7