Process Unit New Drum Detection Mechanism; Spf/Rspf Section; Outline - Sharp AL-2020 Service Manual

(3) Conditions of occurrence of paper misfeed
a. When the power is turned on:
PPD or POD is ON when the power is turned on.
b. Copy operation
a PPD1 jam PPD1 does not turn off within 4 sec after
turning on the resist roller.
b PPD2 jam PPD2 is off immediately after turning on the
resist roller.
PPD2 does not turn off within 1.2 sec after
turning off the resist roller.
c POD jam POD does not turn on within 2.9 sec after
turning on the resist roller.
POD does not turn off within 1.5 sec - 2.7 sec
after turning off PPD2.
6. Process unit new drum detection
mechanism
1) When the power is turned on, the detection gear 38T is rotated
in the arrow direction by the detection gear 20T to push the
micro-switch (process detection switch) installed to the machine
sensor cover, making a judgement as a new drum.
Gear 20T
Gear 38T
Process detection switch
AL-2020/2035/2040/2050/2060 OPERATIONAL DESCRIPTIONS 7 - 7
2) When the detection gear 38T turns one rotation, there is no
gear any more and it stops.
The latch section of the 38T gear is latched and fixed with the
projection of the process cover.
Gear notch
Gear pawl
Gear notch
Gear pawl

7. SPF/RSPF section

A. Outline
The SPF (Single Path Feeder) is installed to the AL-2035/2040 as a
standard provision.
The RSPF (Reverse Single Path Feeder) is installed to the AL-
2050/2060 as a standard provision.
It automatically copies up to 50 sheets of documents of a same
size. (Only one set of copies)
Projection
Projection