Canon imagePRESS C7000VP Series, Информация по устранению неполадок, Страница: 29 / 137

Trouble Shooting Information for C7000VP series
Page 29
Rev. 2.0
2010/09/17
*1 Soil on the ATR sensor

Field Remedy
1. Clean the ATR sensor with alcohol.
Note: Wipe the sensor in one direction more than 3 times. Do NOT wipe it back-and-forth.
7. Replace the ATR sensor with a new one.
In addition, for the purpose of preventing any future occurrence, follow the steps below.
a. Service mode(Level 2) > COPIER > Adjust > DENS > HLMT-PTY/M/C/K,
Settings: If the current value is 4, change it to 9.
If the current value is 9, change it to 10.
Note:
Density might decrease as a negative effect. Therefore, execute the above setting value
change only if soil on the sensor occurred at less than 250K intervals of periodic cleaning
maintenance for ATR sensor.
Or
b. Shorten the interval of cleaning maintenance.
*2 Image density is too low
As possible causes of low image density, soiled primary charging assembly, faulty laser, soiled
dust-proof glass, faulty drum, faulty developing, and etc. are conceivable. However, faulty
developing is the most likely. For this reason, check the area around the developing assembly
first.

Field Remedy
1. Check the area around the developing assembly.

Are there occurrences of Tiger stripe?

Are there occurrences of developer overflow?
If these symptoms have occurred, replace the developer after taking actions such as
cleaning.
1. If there is no abnormality found at the step 1, output PG5 of the corresponding color
with density settings ‘80’ and ‘255’. Check the density and unevenness.