03/2003
2-6
8850/ 510DP
LL-21
Status Indicator RAPs
LL-21 Charge/Grid Fault RAP
This fault will occur when the Charge and/or Grid outputs either arc, short, or there is an open
circuit. The High Voltage Power Supply (HVPS) can not always detect arcing from the Charge/
Grid outputs. It depends on the severity and duration of the arcing. The software is set to filter
out short fault signals from the HVPS and shut the Printer down when a significant fault occurs.
If arcing occurs, it will result in a copy quality defect of black lines in the process direction or
solid black copy
Initial Actions
•
Check that the Printer firmware is 02.01.51-16 or higher is installed. If not upgrade the
Firmware to the latest version.
•
Check that the Tag 6 High Voltage Power Supply is installed.
NOTE: Refer to
when using this RAP.
Procedure
Table 1 LL-21 RAP
HVPS Output Condition
Corrective Action
Charge Pin
Shorted
Check the Charge Corotron wiring for damage or
a pinch point to a grounded surface. Check for
contamination around the corotron that may pro-
vide a path to ground. If okay, refer to the
and check the High Voltage Power Supply.
Arcing
NOTE: Severe arching
will cause a crackling/
snapping sound in the
area of the HVPS. Blue
sparking may also be
observed on the HVPS
near the Grid output con-
nector.
Check/Clean the area in the area of the arcing.
Check the Charge Scorotron pins for damage or
proximity to a grounded surface. Repair as
required. If the problem persists, refer to the
and check the High Voltage Power Supply.
Open (bad connection)
Check to ensure all connections are fully seated.
Grid
Shorted
The HVPS may not reliably detect this condition.
The Auto ESV routine (0904) will not function cor-
rectly resulting in:
, Condition 1, or an image quality defect of
blank lines or bands in the process direction, or
solid black copies.
Arcing
NOTE: Severe arching
will cause a crackling/
snapping sound in the
area of the HVPS. Blue
sparking may also be
observed on the HVPS.
Most unlikely that the Grid will arc. Clean the area
in the area of the arcing. Clean the Grid. Replace
the Charge Scorotron Assembly (
Open (bad connection)
The Auto ESV routine (0904) will not function cor-
rectly resulting in:
, Condition 3. Check to ensure all connec-
tions are fully seated.
Table 1 LL-21 RAP
HVPS Output Condition
Corrective Action
Содержание Synergix 8850
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