BenQ V37X, Product Service Manual, Page: 16 / 192

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BenQ's LCD TV Product of Reliability Design Guide
Date :
25-04-2006
Rev. 1
No Reliability BenQ (Rev.0) BenQ (Rev.1) C3 C4 C5 ORT
4. To measure the front side noise of the
UUT, with the display is operating, fan is /
is not operating.
5. Test table height is 75cm.
Background noise< 20 dBA
Criteria inspection :
Fan operating :
≦
35dBA.
Fan non- operating :
≦
25dBA.
cm .
4. To measure the around noise of
the UUT (four direct) , with the
display is operating, fan is / is
not operating.
5. Test table height is 75cm.
Background noise< 20 dBA
Criteria inspection :
Fan operating :
≦
35dBA.
Fan non- operating :
≦
25dBA.
2.7 Reliability
1. MTBF would be 50,000 hours. (exclude LCD module, Power Supply ).
2. Panel life time: 60,000hours. (follow panel manufacturing spec).
BenQ's LCD TV Product of Reliability Design Guide
Date :
25-04-2006 Rev. 1
No Reliability BenQ (Rev.0) BenQ (Rev.1) C3 C4 C5 ORT
1 Prediction
MTBF
(Bell Core)
1. Test Condition :
Follow up "BenQ components de-rating
design
guideline" (Excluding CCFL lamp in
MTBF test)
2. Criteria inspection :
MTBF
≧
60000hrs
Release MTBF report on C5 stage.
Same as Ver.0 1 0 0 0
2 MTBF
Demonstrat
ion
1. Demonstrated MTBF
≧
60000 hours at
25
℃
(Excluding CCFL lamp in MTBF test)
Load: Maximum loading.
AC input voltage: 115/230V.
Meeting 95% confidence level (2.9957).
Same as Ver.0 0 0 20 0