Ricoh A077-29 Technisch bulletin - Pagina 14
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SUBJECT:
Additional Information for Exposure Lamp Voltage Adjustment
PREPARED BY: S. Orita
CHECKED BY:
CLASSIFICATION:
Action Required
Troubleshooting
Retrofit Information
It is instructed not to adjust VR401 on the service manual page 4-22.
However, if VR401 is touched by accident, it should be readjusted according to the
following procedure.
1. Remove the following covers.
•
Upper rear cover (2 screws)
•
Lower rear cover (2 screws)
•
AC drive board cover (2 screws)
2. Enter SP51 and check whether the
exposure lamp data becomes "126" or
not .
If yes, go to step 3.
If no, exit SP51 and enter SP48. Adjust
the SP48 data using the Increase (+) or
Decrease (–) key to display 126" in
SP51, then exit SP48.
3. Turn off the main switch.
4. Set the multimeter range to ac 200 V and
connect the multimeter leads to CN419-1
and CN419-2 on the ac drive board as
shown.
5. Turn on the main switch and enter SP51.
6. Adjust the exposure lamp output voltage
to the following voltage by turning VR401.
115 V machine ............................ 72 volts ac (r.m.s.)
220 ∼ 230/240 V machine ......... 134 volts ac (r.m.s.)
Technical Bulletin
FROM: Copier Technical Support Section
Revision of service manual
Information only
Other
No. RTB-006
DATE: Aug. 15, '92
PAGE: 1 of 2
MODEL:
E7 Series
(A076/A077/A078)
Increase
Decrease