Sharp MX-M550U

MX-M700N DUPLEX SECTION H – 2
2. Operational descriptions
A. Outline
When duplex print is selected, paper one surface of which was
printed is switched back to feed to the duplex section to make
duplex print.
B. Paper transport operation in duplex print
(1) Switchback operation and transport to the reverse
section
1) The paper transported from the fusing section is sent to the
paper exit roller 1 (which is driven by the paper exit motor 2
(POM2)) with the transport roller 16 (which is driven by the
paper exit motor 1 (POM1)).
At this time, paper is passed under the paper exit guide. After
paper passing, the paper exit gate guide falls down by its own
weight.
Code
Signal
name
Name Function/Operation Type NOTE
AINPD AINPD Duplex (ADU) paper entry detector Duplex (ADU) paper entry detection,
detection of paper exit to finisher
Transmission
type
Paper transport
system sensor
APPD1 APPD1 Duplex (ADU) paper pass detector 1 Duplex (ADU) upstream paper pass detection Transmission
type
Paper transport
system sensor
APPD2 APPD2 Duplex (ADU) paper pass detector 2 Duplex (ADU) midstream paper pass detection Transmission
type
Paper transport
system sensor
DSW-ADU DSW-ADU Duplex (ADU) cover open/close
detector
Duplex (ADU) cover open/close detection Transmission
type
Door switch
PFD2 PFD2 Paper pass detector 2 Paper pass detection (Left door unit) from duplex
(ADU)/Paper feed tray 1, 3, 4
Transmission
type
Paper transport
system sensor
THPS2 THPS2 Transfer belt contact/separation
home position sensor 2
Transfer belt separation home position detection 2 Transmission
type
Other sensor,
switch
ADM1 ADM1 Duplex (ADU) motor 1 Drives the paper transport roller 2 and the paper
transport roller 19
Stepping motor High speed
only
ADM2 ADM2 Duplex (ADU) motor 2 Drives the paper transport roller 20 and 21 Stepping motor Selection of
Normal speed/
High speed
TURM TURM Transfer separation motor Drives and separates the transfer belt DC brush motor The transfer
belt is pressed
on the OPC
drum only
during printing.
DGS DGS Paper exit gate solenoid Drives the paper exit gate Electromagnetic
solenoid
DSW-L DSW-L Left door open/close detector Left door open/close detection Micro switch Door switch
No. Name Function/Operation
1 Transport roller 21 (Drive) Transports paper from the transport roller 20 to the transport roller 15
2 Transport roller 20 (Drive) Transports paper from the transport roller 19 to the transport roller 21
3 Transport roller 19 (Drive) Transports paper from the transport roller 2 to the transport roller 20
4 Paper exit roller 2 (Drive) Discharges paper. / Transports paper to the duplex (ADU) section
POM2
POM1
POD1