SHARP LPE250 Technical Report

Date: Jul. 22, 1996

LASER PRINTER: JX-9210

(Part change information)

No. : LPE-250

A CHANGE TO THE MAIN PWB AND PARTS.

1.Model Name: JX-9200/9210

2.General: Problems may arise during printing when the unit is attached to a certain personal

computer by a certain connector cable. To prevent this, a 100pF capacitor has been
added to the main PWB. To improve productivity, the block resistor (R511) for the main
PWB has also been changed.

3.Description: 1. 100pF capacitors (VCCCPA1HH101J) have been added to the legs of the gate array
side (VHILZ9AT31/-1) of the feet of the core (L515) and to the gate array’s ground 59
pin. In order to prevent short circuits, an Irax-tube has also been added to one foot of
the capacitor. (See the figure below and the circuit diagram)

1 mm

6 mm

5 mm

100pF capacitor
added

101J

IRAX tube

SHARP CORPORATION Printer and Scanner Division

1/3

Orange

C

100pF capacitor added

2/3

2. To improve productivity, the R511 block resistor (10KΩ 8pixel) has been changed to a
10KΩ 4pixel block resistor.

Before change After change

Block resistor RMPTC8103QCKB RMPTC4103QCKB

(10KΩ 8pixel) (10KΩ 4pixel)