Gestetner B147 Service Manual page 1058

BULLETIN NUMBER:
APPLICABLE MODEL:
GESTETNER – DSC332/DSC338
LANIER – LD232C/LD238C
RICOH – AFICIO 2232C/2238C
SAVIN – C3224/C3828
SUBJECT: VERTICAL BLACK LINES
SYMPTOM:
On units that have the Lubricant Bar installed in the PCU (P/N B1909510) (Refer to TSB B147/B149/B190 -
008 REISSUE INCREASED PCU YIELD (40K
copied image.
CAUSE:
Paper dust or silica particles can collect on the charge roller. The paper dust and silica particles will increase
the roller surface's electrical resistance and decreases its charge efficiency. This is turn, results in vertical
lines on the image.
SOLUTION:
Replace the PCU (P/N B1909510) or clean the surface of the charge roller according to the following Charge
Roller Cleaning Procedure.
NOTE: Prior to replacing the PCU, verify that the firmware is version 1.11 or newer. Then enable New
Unit Detection using the appropriate SP5-999 setting: 1-K, 2-Y, 3-M, 4-C.
Charge Roller Cleaning Procedure:
1. Place the PCU on a cloth-covered surface, being sure to place smaller cloths or sponge sheets
underneath both edges of the unit as shown, to protect the drum.
Copyright  2005 RICOH Corporation. All rights reserved.
TECHNICAL SERVICE BULLETIN
B147/B149/B190 – 022
→
60K), vertical black lines may appear on the printed or
w w w . R i c o h U n i v e r s i t y. c o m
01/26/2005
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