Ricoh A076-10 Buletin Teknis - Halaman 14

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Ricoh A076-10 Buletin Teknis
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