Read Sharp AR-F12 (serv.man8) Service Manual online
8-4
CHAPTER 8 TROUBLESHOOTING
6) Measure the winding amount (shift) of the
stack of sheets, and compare this amount
with the standard amounts.
with the standard amounts.
• This amount should be measured at the cen-
ter of the paper leading edge.
Third sheet
First sheet
Second sheet
Paper delivery
direction
direction
First sheet and Second sheet:
0 ± 1mm
First sheet and Third sheet:
4mm or less
Second sheet and Third sheet:
4mm or less
Figure 8-109
7) If the amount is within the standard, turn
the host machine OFF, and then set all bits
of SW3 to OFF. If the amount is outside
the standard, perform the following.
of SW3 to OFF. If the amount is outside
the standard, perform the following.
8) Turn the host machine OFF, and set SW3
on the finisher controller PCB as indicated.
If EEPROM (Q2) on the finisher control-
ler PCB has been replaced, proceed to step
10).
If EEPROM (Q2) on the finisher control-
ler PCB has been replaced, proceed to step
10).
ON
1
2
3
4
5
6
7
8
Figure 8-110
9) Turn the host machine ON, and then press
SW2 on the finisher controller LCB.
• The current setting values are displayed at
LED1.
Adjustment value 0
Lights for 1 second
(once)
(once)
Adjustment value +N Blinks (lights for 0.2
second) for N times.
Adjustment value -N Lights for 1 second
(once), and blinks
(lights for 0.2 second)
for N times.
(lights for 0.2 second)
for N times.
The adjustment width is 0.72mm for each
N=1.
N=1.
Table 8-101
10) Turn the host machine OFF, and then set
SW3 on the finisher controller PCB as in-
dicated.
dicated.
ON
1
2
3
4
5
6
7
8
Figure 8-111
11) Press SW1 or SW2 on the finisher control-
ler PCB as necessary.
• Each press of SW1 increments the winding
amount in 0.72mm increments.
• Each press of SW2 decrements the wind-
ing amount in 0.72mm increments.
Third sheet
First sheet
Second sheet
Paper
delivery
direction
delivery
direction
Movement of
direction of
1st sheet by SW1
direction of
1st sheet by SW1
Movement of
direction of
1st sheet by SW2
direction of
1st sheet by SW2
Figure 8-112
12) Repeat steps 1) though 6) twice. Check that
the winding amount is within the standard
in both times.
in both times.
13) Turn the host machine OFF, and set all bits
of SW3 to OFF.
This completes the adjustment.
This completes the adjustment.
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