Ricoh Taurus-C1a - Page 479

Technical Bulletin PAGE: 2/2
Reissued:16-Apr-14
Model: Taurus-C1a/C1b (D074/D075)
Date: 07-Jun-13
No.: RD074106a
Recommended Action
When encountering the mottled effect, take the following actions in the order described.
No.
Action
Result
1
Checking PM parts
Check the PM counter and replace any part(s)
exceeding yield.
Execute Manual ProCon :Exe （SP3-011-002)
OK: Finish.
NG: Go to Step 2.
2
Refreshing toner
Print 40 pages of Full Dot Pattern (SP2109-3;#26) in
duplex on A3 with the affected color.
OK: Go to Step 3.
NG: Go to Step 5.
3
Checking the usage
Use the SMC Analysis tool to check average coverage
and P/J. Is the coverage below 5%? Are low P/J jobs
printed frequently?
YES: Go to Step 4.
NO: Go to Step 5.
4
Preventing reoccurrences
Change the value in SP3-820-022 (Tnr Refresh Mode)
from 0 to 100. This will increase the toner refresh
amount at job end.
* Note that toner consumption will increase.
Finish.
5
Changing the paper
Use a fresh pack of paper or paper with a smoother
surface (if accepted by the customer).
OK: Finish.
NG: Go to Step 6.
6
Checking operational environment
Is the machine operated in a low temperature low
humidity environment? The symptom typically occurs in
the mornings in winter.)
Yes: Go to Step 7.
No: Go to Step 8.
7
Optimizing operational environment (if possible)
Turn on the room heating (or set to a higher
temperature). Turning on the ITB heater is also
effective. When using the ITB heater, do not turn off the
mainframe breaker switch.
OK: Finish.
NG: Go to Step 9.
8
Checking the image transfer voltage
Check the feedback voltage in the following SP. If the
feedback voltage is 5.8V or higher, replace the affected
image transfer roller(s).
SP2-312-001
Measured Voltage ITB K
SP2-312-002
Measured Voltage ITB C
SP2-312-003
Measured Voltage ITB M
SP2-312-004
Measured Voltage ITB Y
Go to Step 9 or 10 depending on
the feedback voltage (x).
-7kV <x ≦ -5.8 kV
Go to Step 9.
x ≦ -7kV
Go to Step 10.
9
Replacing the image transfer roller
Swap or replace the Image Transfer Roller.
OK: Finish.
NG: Contact your supervisor.
10
Replacing the image transfer power pack
Cycle the machine OFF/ON to see if the symptom
changes. If changes are not observed, replace the
Image Transfer Power Pack.
OK: Finish.
NG: Contact your supervisor.