: Feb. 6 2004
1
AR-M550/M620/M700 DETAILS OF EACH SECTION 6 - 101
6. Fusing section
A.
General
This section performs the following functions and operations.
1) Toner attached to paper in the transfer section are heated and
pressed onto paper to fuse.
2) The auxiliary heat roller is used to improve fusing capacity and
separation capacity after fusing.
B. Major parts and signal functions
■ AR-M550N/U, AR-M620N/U
Copy
Paper
exit
Fusing roller
(Heating)
Sub power PWB
Fusing
motor
Paper exit
roller
Heater lamps
(2 pcs.)
Fusing roller
(Pressing)
Cleaning
scraper
Auxiliary
heat roller
Heat lamp
(1 pc)
Fusing
1
1
Drawer connector
RTH1 GND2
RTH2
GND2
RTH3
GND2 (NC) (NC) (NC)
HL-2L HL-1N HL-2N HL-3N HL-3L HL-1L
123456 1234 567 89
123456
RTH1
RTH2
RTH3
HLTS1
HLTS2
HL1
HL2
FUM
HL3
HLTS3
1
2
3
456
1
2
3
456
+12VS GND2
AC-MON FW-SUB
HLCNT3 GND2
+24VPR HLPR12 GND2 HLCNT2
HLCNT1
GND2
CN-4 CN-3
CN-1
CN-2
HL1-N
HL3-L
HL2-L
HL1-L HL2-N
HL3-N
123 123
1
+12VS
CN-1
2
GND2
3
AC-MON
4
FW-SUB
5
HLCNT3
6
GND2
1
GND2
CN-2
2
+24VPR
3
GND2
4
GND2
5
HLPR12
6
RTH1
7
HLPR3
8
GND2
9
HLCNT1
10
RTH2
11
HLCNT2
12
GND2
13
+24V1
14
RTH3
15
/MSWPR
16
GND2
1
RTH1
1
2
GND2
2
3
RTH2
3
4
GND2
4
5
RTH3
5
6
GND2
6
7
(NC)
7
8
(NC)
8
9
(NC)
9
BB
WW
W
B
9
4
1
4pin
3pin
6pin
1pin
5pin 2pin
Cross-
sectional
view of
connector
12
21
12
34
4321
A
B
A
B
PCU
4
3
1
8
7
5
2
Sub power PWB
2
987654321
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