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
Summary of Contents for FT-81012
Page 1: ...SERVICE MANUAL UNIVERSUM FT 81012 MODEL ...
Page 33: ......
Page 34: ......
Page 35: ......
