HP digital sender 9200c Manuale Di Servizio
Motors and fans
The scanner assembly has three motors and three fans. The motors are stepping motors, which
drive the components inside the scanner assembly. The fans cool various motors and components in
the system.
drive the components inside the scanner assembly. The fans cool various motors and components in
the system.
Name
Purpose
Type
Rotation
Failure detection
Scanner motor
(flatbed motor)
(flatbed motor)
Drives the scanner
carriage unit
carriage unit
Stepping motor
Varies
No
Feed motor
Drives the pickup, the
separation, and
registration rollers
separation, and
registration rollers
Stepping motor
Varies
No
Read motor
Drives the feed and
delivery rollers
delivery rollers
Stepping motor
Varies
No
Scanner base fan
Cools the power supply Fan
Exhaust
No
Scanner motor fan
Cools the scanner
lamp and the CCD
lamp and the CCD
Fan
Intake
Yes
ADF fan
Cools the feed motor
and the read motor
and the read motor
Fan
Exhaust
Yes
Optical assembly
The optical assembly contains the lamp, five mirrors, a lens, and the charged coupled device (CCD).
Figure 5-2
Scan carriage components
The scanner lamp illuminates a small strip of the document that is called the raster line. The mirrors
direct the light through the lens to the CCD. The CCD senses and records the light, creating an
analog representation of the raster line. If the ADF is being used, the document then advances in the
ADF to the next raster line. If the flatbed is being used, the carriage advances to the next raster line.
This advancing and collection process continues to the end of the sheet.
direct the light through the lens to the CCD. The CCD senses and records the light, creating an
analog representation of the raster line. If the ADF is being used, the document then advances in the
ADF to the next raster line. If the flatbed is being used, the carriage advances to the next raster line.
This advancing and collection process continues to the end of the sheet.
Flatbed unit and ADF system
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