Ricoh A085, Руководство пользователя

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5.5 TRANSFER AND SEPARATION CORONA CURRENT
ADJUSTMENT
NOTE: The corona current varies with environmental conditions such as
humidity and atmospheric pressure. The corona current is adjusted
at the factory and is suitable under a wide range of environmental
conditions.
The transfer corona current adjustment will be required only when
the high voltage supply board - CTBG is replaced.
The separation corona current adjustment will be required only when
the high voltage supply board - D is replaced.
CAUTION: Make sure that SP9 (output mode) is not active before you
change the range on the digital multimeter. If SP9 is active,
the multimeter may be damaged.
Be careful as high voltage is applied to the corona wires.
[Special Tools]
The following special tools are required for the transfer and separation
corona current adjustment.
•
P/N A0069105 Drum shoe shaft
•
P/N 54429106 Drum shoe
•
P/N 54479104 Shoe adapter
•
P/N 54209507 Digital multimeter
[Preparation]
1. Turn off the main switch and remove the following parts:
Development unit
Cleaning unit
Charge corona unit
Drum unit
T&S corona unit
2. Clean the T&S corona unit with water or alcohol and replace the transfer
and separation corona wires with new ones.
3. Remove the drum from the drum unit (see Drum Replacement). Cover
the drum with a shielding sleeve.
OTHERS 10 July 1992
5-18