AR-M550 (serv.man10). (5) External view and internal structure - Sharp Copying Equipment Service Manual (repair manual). Page 21

AR-M550/M620  EXTERNAL VIEW AND INTERNAL STRUCTURE  5 - 20

No.

Name

Function/Operation

MODEL

 NOTE

1

Switchback gate

Selects the paper route when discharging paper to the inner tray and 
when switching back. 

Switched not by the solenoid drive 
but by the automatic procedure.

2

Paper exit gate

Selects the paper route to transport paper to the duplex (ADU) 
section or to discharge paper.

Driven by the solenoid (DGS).

3

Manual feed gate

Specifies the lead edge position of paper when setting paper. 
(Prevention against double feed, and erroneous take-up of all paper 
into the paper feed roller)

Code

Name

Type

Function/Operation

MODEL

NOTE

HL1

Heater lamp 1

Halogen lamp

Heats the center of the upper fusing 
roller.

 

HL2

Heater lamp 2

Halogen lamp

Heats the both ends of the upper 
fusing roller.

 

HL3

Sub heater lamp

Halogen lamp

Heats the fusing roller (pressing 
roller).

2

3

1

1

7
5

6

2

3