HP Color LaserJet 9500 Service Manual - Page 83
Sensors-multifunction finisher 4 of 5, Number, Description, Function, Location,
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PI19 PI20 PI18 PI24 PI21 Figure 42. Sensors-multifunction finisher (4 of 5) Number Description PI18 Slide home-position sensor PI19 Stapler home-position sensor PI20 Stapler-empty sensor PI21 Stapler top-position sensor PI24 Full-stack sensor Function Location Detects the staple unit at the home position Stapler assembly Detects the stapling operation at the home position Stapler assembly Detects that the stapler cartridge is empty Stapler assembly Detects the top of the staple Stapler assembly Detects that the delivery tray is full Whole unit ENWW Chapter 5 Theory of operation 81
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ENWW
Chapter 5 Theory of operation
81
Figure 42.
Sensors—multifunction finisher (4 of 5)
PI24
PI21
PI20
PI19
PI18
Number
Description
Function
Location
PI18
Slide home-position sensor
Detects the staple unit at the home
position
Stapler
assembly
PI19
Stapler home-position sensor
Detects the stapling operation at the
home position
Stapler
assembly
PI20
Stapler-empty sensor
Detects that the stapler cartridge is empty
Stapler
assembly
PI21
Stapler top-position sensor
Detects the top of the staple
Stapler
assembly
PI24
Full-stack sensor
Detects that the delivery tray is full
Whole unit