B. Disassembly/Assembly/Maintenance - Sharp AR-BC260 Service Manual

d. Fusing temperature control
The temperature sensor is provided at the center of the upper and
the lower heat rollers.
The temperature sensor at the center detects the heat roller tem-
perature and controls the heater lamp to keep the fusing tempera-
ture at the specified level.
The fusing temperature is switched according to the machine con-
dition and paper type selected.
(Example: 200V series)
Upper heat roller
Ready state 160°C
Power save mode 138°C
Print mode Normal paper
B/W
OHP sheet
Heavy paper 1
Heavy paper 2
Envelope

B. Disassembly/Assembly/Maintenance

(1) Fusing section maintenance target parts
✕: Check (Clean, replace, or adjust as necessary.)
Unit Name No.
Fusing section 1 Upper heat roller
2 Lower heat roller
3 Heat roller gear
4 Heat roller bearing
5 Separation pawl
6 Thermistor
– Bearings
8 Gears
9 Paper guides
10 Paper exit roller
11 Paper exit roller
12 Discharge brush
– Fusing unit
6 6
12
Lower heat roller
145°C
OFF
160°C 145°C
170°C 155°C
170°C 135°C
175°C 145°C
180°C 145°C
❍: Clean
When
Part name 50K 100K 150K 200K 250K 300K 350K 400K
calling
✕ ✕
✕ ✕
✕ ✕
✕ ✕
✕ ✕
✕ ✕
✕ ✕
✕ ✩
❍ ❍
✕ ✕
✕ ✕
✕ ✕
✕
1 1
2 2
6 6
AR-BC260 DESCRIPTIONS OF EACH SECTION 7 - 3
∆: Adjust
L ✩
: Replace : Lubricate
L ✕ L ✕
L ✕ L ✕
L ✕ L ✕
L ✕ L ✕
L ✕ L ✕
L ✕ L ✕
✕ ✕ ✕ ✕
✩ ✩ ✩ ✩
❍ ❍ ❍ ❍
✕ ✕ ✕ ✕
✕ ✕ ✕ ✕
✕ ✕ ✕ ✕
L ✕ L ✕
11
10
11
5
11
4 4
4 4
❏: Shift position
Remark
L ✕ L
Replace at 100K or
within 2 years.
L ✕ L
Replace at 100K or
within 2 years.
L ✕ L
100K
L ✕ L
100K
L ✕ L
100K
L ✕ L
100K
✕ ✕ ✕
✩ ✩ ✩
❍ ❍ ❍
✕ ✕ ✕
✕ ✕ ✕
✕ ✕ ✕
L ✕ L
Replace the unit at
100K or within 2 years.
8 8
4 4
11
5 5
9 9
3 3
4 4