Paper Feed Operation; Paper Size Of Paper Feed Trays Detection Method - Sharp MX-M550U Service Manual

2. Operational descriptions
A. Outline
Paper feed tray 1 holds 900 sheets, paper feed tray 2 holds 1,300 sheets.
The multi-purpose paper feed tray 3 holds 550 sheets, the paper feed tray 4 holds 550 sheets, and the manual paper feed tray holds 100
sheets. Those paper feed units are standard provisions.
B. Paper feed tray 1, 2 section

(1) Paper feed operation

a. Preliminary operation before paper feed
1) Set paper in the tray, and insert the tray into the machine. The tray sensor turns on.
2) The lift-up motor operates to lift the tray.
3) The paper upper limit sensor turns on to stop the tray at the specified position.
b. Paper feed operation
1) When copy/print operation is started, the motors (MM, FUM, VPM, and TRM) and the clutch (TRC) are turned on to turn on the solenoid
(T1PUS) at the timing of paper pickup. This rotates and falls the take-up roller to pick up paper.
2) At the same time, the paper feed roller rotates to feed paper to the transport section. At that time, the separation roller rotates to prevent
against double feed of paper.
C. Paper size of paper feed trays detection method

(1) Paper size of paper feed trays detection method

a. Paper feed tray1, 2 paper feed unit (Paper feed tray 1, 2)
The paper feed tray 1 is used exclusively for A4 (11 x 8.5) paper size. The paper feed tray 2 is used for A4, 11 x 8.5, or B5 paper size. To
change the paper size, change the paper guide and change the set value of SIM 26-2.
MM
FUM
870mS
T1PFC
79mS
T1PUS
50mS 79mS
VPM
50mS 74mS
TRM
164mS
RRC
439mS
POM1
POM2
PFD2
PPD
POD1
POD2
MX-M700N TRAY PAPER FEED SECTION F – 5
500mS
500mS
500mS
120mS
500mS