AOM driver work is not stable, so,
the amount of light output to the photo change,
cause photo change color

(Cyclical change )

AOM driver work is not stable, so, the amount of light output to the photo change, cause photo change color

(Short lost output signal )

AOM driver work is not stable, so, the amount of light output to the photo change, cause photo change color

(Output slope not smooth )

If the color changed randomly,not regular,most likely the AMO driver was damaged. You can assure this by changing the AMO driver.

AOM driver work is not stable, so, the amount of light output to the photo change, cause photo change color

(Output slope not smooth light)

AOM driver work is not stable, so, the amount of light output to the photo change, cause photo change color

(Output slope not smooth light)

Light quantitative change weak enough to keep synchronization

Sometimes lost synchronous signal (slight)

ALL
( Not including   QSS-30 Series)

Light quantitative change weak enough to keep synchronization

Sometimes lost synchronous signal (serious)

Very slight yellow ripple

noise

Bule laser work is not stable

Yellow dot

Bule laser work is not stable

Bule laser work is not stable

Magenta dot

Green laser work is not stable

Green laser work is not stable

Yellow dot on print

Blue laser noise

Blue laser work is not stable

Yellow dot

Blue laser noise

Blue laser work is not stable

Blue dot on print
Means physical damaged on the parts of paper path.

Color dots and lines on print,
Means abnormal image processing, you should change the image processing PCB.

Abnormal image ( left)
Means abnormal image processing, you should change the image processing PCB.

Abnormal image ( left)
Means abnormal image processing, you should change the image processing PCB.

Abnormal image ( left)
Means abnormal color management, you should replace the profile in main program.

Image processing abnormal
abnormal image ( left)
abnormal communication,clean the Fibers

Image processing abnormal

means abnormal image processing, you should change the image processing PCB.

Red laser gun damage.

Replace red laser gun.

Abnormal image ( left)

Means abnormal color management, you should replace the profile in main program.

Abnormal image ( left)

Means abnormal color management, you should replace the profile in main program.

green dots regularly

means abnormal image processing, you should change the image processing PCB.

Color line

Blue laser synchronous signal lost
Reason 1:blue laser light is too weak 
Reason 2:blue  Aom driver PCB distribution signals of the amount of 
light was abnormal caused by light assignment insufficiency 
You can exchange Aom driver to judgment
if changed Aom driver pcb the photo become normal 
it's means Aom driver is damage.otherwise,
the laser head was damage

Color line

Red laser synchronous signal lost.
The red  laser light arrived in to paper is too weak
Reason 1: red laser light is too weak 
Reason 2:red  Aom driver PCB distribution signals of the amount of 
light was abnormal caused by light assignment insufficiency 
You can exchange Aom driver to judgment
if changed Aom driver pcb the photo become normal 
it's means Aom driver is damage.otherwise,
the laser head was damage

Reason :red Aom driver PCB distribution signals of the amount of 
light was abnormal caused by light assignment insufficiency 
You can exchange Aom driver to judgment