Olivetti d-Color MF4003 Service Manual page 626

d-Color MF4003/
MF3303
1.14.2
[6]
Drive
[5]
[4]
[3]
[2]
[1]
[1] Registration clutch (CL4)
[3] ADU transport clutch (CL5)
[5] ADU reverse rotation clutch (CL7)
1.14.3 Operation
(1) Paper transport control
1. Paper transport
• The fusing motor and ADU reverse rotation clutch provides drive for paper transport onto the duplex section.
• The duplex transport clutch controls the main motor to rotate, to drive the ADU transport roller.
• The ADU transport roller transports paper from the duplex section to re-feeding position.
• The duplex transport sensor is located at the re-feeding position in the duplex section, serving to control the timing at which paper is
moved and detect paper misfeed or paper left in the duplex section.
[1] ADU reverse rotation clutch (CL7)
[2] Fusing motor (M3)
[3] ADU transport clutch (CL5)
[4] Main motor (M1)
[5] ADU transport sensor (PS11)
[6] ADU transport roller
[7] Switchback guide
[8] Paper exit roller
[9] Reverse roller
[9]
[8]
[7]
[6]
2. Loop formation
• To correct skew in the paper transported to the duplex section, a loop is formed in the paper at the duplex section before the paper
is transported onto the main body.
• The registration roller functions to control formation of the loop. The registration roller is brought to a stop after the lapse of a
predetermined period of time after the paper has moved past the duplex transport sensor. A loop is thereby formed in the paper at
the duplex section.
• After the loop being formed, start transporting paper with the loop being held exactly by turning on the duplex transport clutch before
turning on the registration clutch.
Service Manual
P THEORY OF OPERATION > 1. d-Color MF4003/MF3303
[2] Main motor (M1)
[4] ADU forward rotation clutch (CL6)
[6] Fusing motor (M3)
[1]
[2]
[3]
[4]
[5]
P-52
Y119930-3