 |
| Laser printer print defects - Black pages |
|
| Problem
|
Cause
|
Solution
|
How
common* |
Comments |
| black pages
|
DC Controller
PCA is defective. If the DC Controller turns on the laser beam continuously,
the entire surface of the Photosensitive drum is neutralized causing a completely
black page |
Replace the
DC Controller PCA |
10 |
|
| black pages
|
Defective
toner cartridge |
Replace the
toner cartridge |
9 |
4 |
| black pages
|
High voltage
contact springs are dirty or defective. The high voltage contacts are mounted
on the High Voltage Power Supply PCA and protrude into the toner cartridge
cavity |
Inspect and
clean the high voltage contacts. If damaged, replace the High Voltage Power
Supply PCA. |
2 |
|
| black pages
|
High voltage
power supply circuit is defective (not supplying the correct negative voltage)
|
Replace the
High Voltage Power Supply PCA |
10 |
some printers
have the high voltage power supply on the DC controller. |
| black pages
|
Laser/Scanner
Assembly is faulty (turning laser on continuously) |
Replace the
Laser/Scanner Assembly |
5 |
|
| black pages
|
Light is leaking
into the printer |
Make sure
that all covers are in place |
2 |
possible,
but not likely |
| *On
a scale of 1-10, how often this problem occurs (10 being most likely). |
|
|
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