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