T
echnical
B
ulletin
PAGE: 2/2
Model:
Taurus-C1a/C1b
Date:
20-Apr-15
No.:
RD074130
3. Check the PM counter value of the developer of the affected color in SP7-621-***.
If the counter value has reached 750k on the 65CPM model or 900k on the 75CPM
model, do the next step.
Otherwise, the symptom is not suspected to be caused by deterioration of the
developer. Do the troubleshooting procedure described in the following section of the
FSM:
Troubleshooting > Troubleshooting for Image Quality Problems > Color Toner
Spotting/Staining > Stained Background
4. Check the SMC and do the following two calculations.
Calculation 1)
: SP8-921-001 / SP8-921-011
Calculation 2)
: SP7-944-002 / SP7-621-002
Do the next step, if both of the following conditions are met:
Calculation 1 results in ‘Smaller than 6’
Calculation 2 results in ‘Greater than 0.9’
NOTE:
The above conditions are not absolute in proceeding to the next step, but more
of a reference in determining if the symptom is caused by deterioration of the
developer. If the calculation results are approximate to the above conditions,
do the next step. However, if they deviate to a large degree, do the
troubleshooting instructions described in the FSM as mentioned previously in
step 3.
5. Print 30 copies of solid-fills (SP2-109-3: #26) in duplex on A4/LT to refresh the
developer in the development unit.
6. Print the affected image and check the image quality. If the problem was not resolved,
repeat step 5 until the symptom disappears.
