Universum FT-81015, Руководство по обслуживанию

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Service Bulletin
Model:
AK41 and AK28 Chassis.
Service
Bulletin No: 139
Priority
( )S. All product.
( )A. Items in Customer / Dealer stock / Service return goods.
( )B. Customer stock / Units returned for Service.
( )C. Sold items returned for Service.
(
X )D. Only Units returned to this bulletin.
( )E. Others
SUBJECT :
Improvement on UKV sensitivity
DATE :
October 24, 2002
<Objective>
Please modify if following symptom occurs
<Symptom>
TV does not sense to R/C signals in the standard distance.
<Cause>
The gain tolerance of IR receivers.
<Countermeasures>
In order to improve to R/C sensitivity distance, modify the touch board (function buttons
card) as given below.
Connect a CAP EL 22UF 50V M between the middle pin and the 1
st
pin (Ground) of IR
receiver.
Please solder the (+) point of 22uF capacitor to the middle pin of IR receiver,
Solder (-) point of 22uF capacitor to the 1
st
point (which is close to middle pin)(Ground) of IR
receiver.
<Spare Parts order>
CAP EL 22UF 50V M: VE-30000371
<Start Date of Modification on Production.>
23.10.2002