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Model:
Taurus-C1a/C1b (D074/D075)
Subject:
Service manual correction: Troubleshooting "Tiger
Stripes"
From:
PP Tech Service Dept., 1st PP Tech Service Sect.
Classification:
This bulletin provides the revised troubleshooting
procedure for "Tiger Stripes" (described as "Wavy
unevenness" in the field service manual).
Background
If the machine is used in a way that disables optimum
refreshing of the developer, for example, continuous
operation of low image coverage jobs or low P/J,
fluidity of the mixture in the development unit degrades.
This causes the amount of mixture to decrease at the
front (operator) side of the development roller (because
the auger rotates to convey the mixture from rear to
front), resulting in the "Tiger Stripes.
Action
When encountering "Tiger Stripes", take the following actions:
1. Are there any PM parts that have already reached maximum life?
Yes: Replace the part(s) to complete the procedure. If the problem persists, do the
next step.
No:
Do the next step.
2. Print out 40 sheets of solid image on A3/DLT in duplex to exhaust old developer from
the development unit. Then, do SP3-011-002 or [0201: Adjust Image Density] in the
[Adjustment Settings for Skilled Operators] menu.
3. Print the job that had the Tiger Stripes. Is the problem resolved?
Yes: Do step 4.
No:
Do step 5.
4. Since the effect expected from exhausting the developer is temporary, set the value in
SP3-820-022 to "100" (default: 0) to prevent problem reoccurrence. With this setting,
the system will refresh toner at the end of every job.
IMPORTANT
Increasing the value in SP3-820-022 will reduce the toner yield.
To confirm the effect, monitor the machine for a while.
5. If the problem cannot be resolved even after doing the above procedure, replace the
developer.
echnical
T
Troubleshooting
Mechanical
Paper path
Product Safety
ulletin
B
Date:
12-Feb-14
Prepared by:
Part information
Electrical
Transmit/receive
Other (
)
"Tiger Stripes" ("Wavy unevenness")
PAGE: 1/1
No.:
RD074114
Hiroshi Inenaga
Action required
Service manual revision
Retrofit information
Tier 2
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