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Date: May. 14, 1996
COPIER : SF-A55
No. : SP-2015
(Service Information)
ABOUT HANDLING THE DIP SW
1.Model Name: SF-A54/SF-A55
2.General: We are adding instructions on making adjustments to the above models, and also
changing the handling procedures for the DIP SW of the RADF control PWB as
indicated below.
SF-A54
General view of the control PWB General view of the DIP switch
ROM
CPU
SF-A55
General view of the control PWB General view of the DIP switch
DRIVER FOR MOTOR
DIP SW
CPU
DRIVER FOR MOTOR
PUSH SW
EEPROM
DIP SW
PUSH SW
G/A
OFF
ON
SW No.1 2345
OFF
ON
SW No.1 2345
SHARP CORPORATION Reprography Division
1/3
Green
C
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SF-A54
Adjust ments to the ADF
Please carry out the following three adjustments whenever changing any of the
RADF/ADF sensors.
No. Adjustment Part adjusted
1 Initializing the E2PROM Adjustment in ADF unit mode
2 Adjusting each sensor Adjustment in ADF unit mode
3 Original halt position adjustment Adjustment using Sim. 53 of the copier unit
ADF unit mode (E2PROM/sensor) adjustment procedure
Before making adjustments...... Open the ADF back side maintenance cover.
Turn the
copier off
DIP SW settings
While pressing on the switch (Push
SW) above the ADF PWB, turn the
copier on. (Keep the switch on for at
least one second.)
Set the DIP SW
See the DIP SW setting
chart to the right.
Open and close the paper
supply or paper discharge
cover. (Opening and
closing the ADF also
works.)
Push SW ON
SF-A55
Adjustment DIP SW setting
E2PROM
initialization
Resist sensor
adjustment
Timing sensor
adjustment
Reverse sensor
adjustment
Adjustment DIP SW setting
E2 PROM
initialization
Sensor
adjustment
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
1
2345
1
2345
1
2345
1
2345
1
2345
1
2345
Model name
SF-A55
SF-A55
SF-A55
SF-A55
Model name
SF-A54
SF-A54
2/3
No No
*
2
The LED above
the PWB flashes
Yes
Make any other
necessary
adjustments
Turn off all the push SWs.
Turn the copier off.
That completes the procedure
The ADF's LEDs,
both red and green,
go on after flashing
Yes
Yes
*
All sensor adjustments for the SF-A54 should follow the
*
1
above chart.
SF-A55
Note 1:
*
When there are no problems, the ADF display's original
transport (green LED) and original remaining (red LED)
lights both turn on after flashing. When there is a
problem with the sensor, an error is indicated and the
red LED flashes. If this occurs, check each sensor for
trouble.
SF-A54
Note 2:
*
When there are no problems, LED 1 on the PWB
flashes. When there is a problem with the sensor, LEDs
3 or 4 flash. If this occurs, check each sensor for
trouble.