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ARE260

Sharp Electronics (UK) Ltd., Technical Services Group

AR-250/287/337/407/507

The addition of circuit-terminating resistors has been carried out to the clock line in the
ICU PWB of the models listed above. This action has been carried out as a measure to
improve the conditions described below.

(1) After the power supply was turned ON, the machine would display the message

“Operating System Checks”, and would not boot up.

displayed, and the machine would freeze.

(3) When a fax was received, half of the image would not be printed out (the image would

be cut).

Model name

Silk-screened No.

Added resistor

AR-250/501/287/337/407/507

R158

1.2 k

A white mark has been added next to the production label of the PWBs to which the
addition of the resistors has been carried out.

TECHNICAL BULLETIN

ARE260

Sharp Electronics (UK) Ltd., Technical Services Group

Action has been carried out from 2000 mid-September production.

Method of confirmation for the field:
(1) Sim 60-1 should be carried out during the initialization setup operations.  The

simulation should be carried out 1 time when the power supply is first turned ON, and
2 times after the setup operations have been completed and the machines is warmed
up.

(2) Sim 60-1 should be carried out for machines which have already been installed.

If the cause of the trouble is in the ICU PWB, carrying out Sim 60-1 will result in <NG>.

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AR-287
AR-337
AR-407

43-88

AR-250

43-90

1

AR-507

All

44

VRS-TS2AD122J

AA

Resistor 1.2k

Mid-

2000/9

6

1. Interchangeable.

4. Not interchangeable.

2. Current type can be used in place of new type.

New type cannot be used in place of current type.

5. Interchangeable if replaced with same types of

related parts in use.

3. Current type cannot be used in place of new type.

New type can be used in place of current type.

6. Others.

Parts marked with "

" is important for maintaining the safety of the set. Be sure to replace these parts with specified ones

for maintaining the safety and performance of the set.