SHARP LPE271 Technical Report

LASER PRINTER: JX-9685

Date

:

Aug. 22, 1997

No. : LPE-271

[Part Change Information]

1.ADDITION OF A RESISTOR CARRIED OUT IN THE PCU PWB.

2.APPLICATION OF GREASE TO THE 31 T GEAR C OF THE DELIVERY UNIT.

3.MEASURE TO IMPROVE THE EMI PERFORMANCE OF THE ICU PWB.

1. Addition of a resistor carried out in the PCU PWB.

1.Model Name: JX-9680/9685

2.General: The high level signal of the stop and start signal in the Polygon motor manufactured by

the Kumagaya Seimitsu Company was unstable, which resulted in the possibility of the
motor revolving even when set to stop. As a measure to alleviate this problem, the
addition of a pull up resistor has been added to the start and stop signal of the PCU
PWB.

3.Description: The addition of a pull up resistor VRD-HT2EY103J (10 KΩ) to the PCU PWB has been

carried out.

1) JX-9680 2) JX-9685
PCU PWB (CPWBF0049GC72) PCU PWB (CPWBF0088GC51)

Added resistor 10 KΩ

SHARP CORPORATION Printer and Scanner Division

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Orange

C

JX-9685 PCU PWB The back side

Resistor (1/4 w 10 KΩ)
with tube (13mm)added.

JX-9680 PCU PWB The back side

Resistor (1/4 w 10 KΩ)

4.Action: From 1997 May production. (JX-9680)

From 1997 mid-February production. (JX-9685)

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