Sharp AR-250, Service Manual

Page: 69 / 196

(2)
Resist amount adjustment
This adjustment is to adjust the timing (paper contact pressure) for
the resist roller in each paper feed mode.
By changing the time difference (timing) between the transport roller
ON and the resist roller ON, the paper contact pressure on the resist
roller is changed.
The adjustment value must be changed according to the copy paper
quality.
1) Execute SIM 51-2.
(AR-250/280/281/285/286/287/335/336/337)
(AR-405/407)
(AR-501/505/507)
2) Change the adjustment value in each mode.
Mode
Initial value (ms) Set
value
(ms)
AR-2XX
AR-3XX
AR-4XX AR-5XX
A:
MANUAL Manual
paper feed
31 55 54 0
~
100
B: TRAY Tray paper
feed
55 45 25 0
~
100
C: LCC LCC paper
feed
45 45 25 0
~
100
D: ADU ADU
paper feed
60 50 25 0
~
100
E: TRAY Tray paper
feed (Low)
45 60 — 0
~
100
F: LCC LCC paper
feed (Low)
45 — — 0
~
100
G: SPF SPF paper
feed
— — — 0
~
100
H. DESK RSPF
paper feed
— — 25 0
~
100
1 step: 1ms
*
When the set value is too small, the copy image position for the
paper may vary.
* When the set value is too great, a paper jam may occur.
G. Others
(1) Original size sensor detection level adjustment
1) Execute SIM 41-2.
(Fig. 1)
2) Execute the sensor adjustment without original.
With the original cover open, without original on the table glass,
press the [EXECUTE] key to perform the sensor adjustment with-
out original. After adjustment, NORMAL or ABNORMAL is dis-
played.
(Fig. 2)
(Fig. 3)
(In the case of NORMAL)
The screen of Fig. 2 is displayed for 1 sec, then the screen of Fig.
3 is displayed, and the sensor adjustment without original is com-
pleted.
(Fig. 4)
(In the case of ABNORMAL)
The screen of Fig. 4 is displayed, and the sensor of abnormality is
highlighted. In this case, confirm the original empty state and
press the [EXECUTE] key to perform the sensor adjustment
again. 3) Perform the sensor adjustment without original.
3) Execute the sensor adjustment with original.
With the original cover open, place five sheets of A3 originals on
the glass by fitting them to the original guide, press the [EXE-
CUTE] key to perform the sensor adjustment with originals. After
adjustment, NORMAL or ABNORMAL is displayed.
6 – 19 7/13/2000