4-8 Phaser 7750 Printer Service Manual
Finisher Sensors Interlocks
Left-Hand Cover is L
Top Cover is L
Docking is H
Horiz. Transport is L
Horizontal Transport
Entry is L
Exit is L
IOT Full is L
Compiler
Tray Exit is L
Paper is L
Cover Safety Switch is L
Stacker
No Paper is L
Height is H
Upper Limit is L
Stack A is L
Stack B is L
Tamper
Rear Home is L
Front Home is H
Stapler
Head Home is L
Low is L
Ready is L
Move is L
Front Corner is H
Miscellaneous
IOT Reg. Clutch is H
Eject Home is L
Set Clamp Home is L
Decurler Cam Position L
Optional - only if Finisher is
installed
H = Open, actuated or paper
present
L = Closed, deactuated or no paper
present
Motors/Fans Tests Tests the operation of motors by running one or more motor tests at a
time.
CAUTION To avoid damaging the accumulator belt, it must be removed prior to performing
the following motor tests:
■ Steering Motor
■ Imaging Unit Motor
■ Accumulator Belt Motor
Main Motor Main Motor is On
Turn Motor Off
All Motors Off
This test produces gear hopping
noise unless you perform the 2nd
transfer roller retract motor test,
prior to this test.
Test Front Panel Display Test Operation Definition
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