Ricoh Pro C901 Technical Bulletin page 507

Reissued:21-Apr-14
Model:
Aries-P1.5/C1.5
Complete steps for developer replacement
Excerpt from RTB RM077072c
Continuous printing of low coverage images degrades the developer and disables
complete operation of the developer removal, in which the development unit accumulates
approximately 400g of developer that cannot be removed. Development unit containing
old developer could cause toner scattering or locking of the development motor over time.
To prevent the above, it is recommended to carry out the following procedures in addition
to the standard developer removal operation.
Check procedure using "Tc down judgement sheet.xls"
Before carrying out the additional developer removal procedures (Procedure 1, 2, 3 and
4), do the check procedure using the Excel file "Tc down judgement sheet.xls" attached
below to determine whether the additional procedures will be needed or not.
Tc down judgment sheet
1. Refer to the SMC printout or go into the SP mode and input the SP values in tables
1 and 3 in the "Tc down judgment sheet.xls".
2. - If the check procedure results in "Condition 1", do "Toner Refresh Amount
Adjustment" and Procedures 1, 2 and 3.
- If the check procedure results in either "Condition 2" or "Condition 3", skip "Toner
Refresh Amount" and do Procedures 1, 2 and 3.
- If the result of the check procedure is none of the above, developer is to be
replaced in the standard procedure.
-Toner Refresh Amount Adjustment-
Modify the toner refresh amount as described in the table below.
3-701 001
Toner Refresh Mode Humid Image Thresh:K
002
Toner Refresh Mode Humid Image Thresh:C
003
Toner Refresh Mode Humid Image Thresh:M
004
Toner Refresh Mode Humid Image Thresh:Y
005
Toner Refresh Mode Image Area Thresh:K
006
Toner Refresh Mode Image Area Thresh:C
007
Toner Refresh Mode Image Area Thresh:M
008
Toner Refresh Mode Image Area Thresh:Y
3-701 009
Toner Refresh Mode Max Pattern Length
 First, do "Modification 1" and check if desired results are obtained. Do "Modification 2"
if further adjustment is needed.
 Note that the value for Black remains at 5%.
echnical
T
SP
ulletin
B
Date:
10-Mar-14
Default Modification 1
K: 5％ K: 5％
Col: 2.5％ Col: 3.8％
12.5 12.5
6.0 9.4
6.0 9.4
6.0 9.4
12.5 12.5
6.0 9.4
6.0 9.4
6.0 9.4
25
PAGE: 55/75
No.:
RM077107b
Modification 2
K: 5％
Col: 5％
12.5
12.5
12.5
12.5
12.5
12.5
12.5
12.5