Sharp AL-841 User Manual download pdf (Page 5)

C. Functional parts

(5) PWB

No.

Parts

MODEL Note

Name Function/operation

1 Power PWB Outputs DC power. Drives the heater lamp. The voltage specification differs

depending on the destination.

2 Scanner lamp drive

PWB

Controls light quantity of the scanner lamp.

3 ICU PWB Converts print data set from the host and converts it into bit

image data and send to the MCU.

Allows connection with one

host computers. Printer models

only

4 MCU (PCU) PWB Controls the image process section and the engine section.

5 High voltage power

PWB

Outputs the high voltage for the image process section.

Controls the main motor.

6 Operation control PWB Displays the value information. Outputs the key operation

signal.

(11) Adjustment volume

No.

Parts

Note

Code Name Function/operation

1 VR1 Scanner lamp light quantity adjustment

volume

Adjusts the scanner lamp light quantity.

2 VR601 Output voltage adjustment volume Adjust the DC output voltage (+24V).

VR801 Main charger voltage adjustment volume Adjusts the main charger voltage.

VR802 Developing bias voltage adjustment

volume

Adjusts the developing bias voltage.

VR601

VR802

VR801

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Sharp AL-841 User Manual Page 5