Toshiba e-STUDIO6520C Service Handbook page 347

Example 3:
When the performance index of the developer exceeds its threshold number
Check the performance index of
each color developer on the
developer sub unit screen detail in
the PM support mode.
Does it exceed the specified
threshold number?
The part is still usable.
Replace the corresponding color
developer after the performance
index has reached the specified
threshold number.
Example 4:
When an image failure occurs though the performance index does not exceed the threshold
number
Check the supplying ratio and driving ratio for each color
developer on the developer sub unit details screen in the
PM support mode.
• Is the supplying ratio lower than 30?
(When the developer supplying amount is extremely small)
• Does does the driving ratio exceed 230?
(When the developer unit driving time is extremely long)
Check the part and equipment
according to the troubleshooting
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Developer material
No
Fig. 5-10
Developer material
No
Fig. 5-11
5 - 15
Yes
Replace the corresponding
color developer.
Yes
Replace the corresponding
color developer.
PREVENTIVE MAINTENANCE (PM)
e-STUDIO5520C/6520C/6530C
5