Sbu (Sensor Board Unit); Buffer; Ccd; Amplifier - Gestetner B130 Service Manual

BLOCK DIAGRAM: PCBS AND COMPONENTS (B129/B130/B168/B169)

6.8.1 SBU (SENSOR BOARD UNIT)

The SBU receives analog signals from the CCD and converts these into digital
signals used for image processing.

Buffer

Used for driving the CCD. Includes a 3V/5V converter (converts the VPL's 3V
drive signal to 5V).

CCD

Converts light reflected from the original into an electrical signal. This machine
uses a Sony ILX553A (5150 pixel) CCD. Scan density is 600 dpi (for letter-size
originals). Pixel size is 7 x 7 microns. Maximum pixel rate is 15Mhz.

Amplifier

Inverts and amplifies the electrical signal from the CCD.
B129 Series/B044 Series
CÓPIA NÃO CONTROLADA
FCU
+12V Filter
+5VVD Filter
Buffer
VPL
COM 1
COM 4
6-14
CÓPIA NÃO CONTROLADA
SBU
CCD
Analog Signal
Amplifier
B046D554.WMF
SM