BenQ V37X Product Service Manual page 16

BenQ's LCD TV Product of Reliability Design Guide
No Reliability
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.
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
No Reliability
1 Prediction 1. Test Condition :
MTBF Follow up "BenQ components de-rating
(Bell Core) design
guideline" (Excluding CCFL lamp in
MTBF test)
2. Criteria inspection :
MTBF≧60000hrs
Release MTBF report on C5 stage.
1. Demonstrated MTBF ≧ 60000 hours at
2 MTBF
25℃
Demonstrat
ion (Excluding CCFL lamp in MTBF test)
Load: Maximum loading.
AC input voltage: 115/230V.
Meeting 95% confidence level (2.9957).
25-04-2006 Rev. 1
BenQ (Rev.0)
25-04-2006 Rev. 1
BenQ (Rev.0)
16
BenQ (Rev.1)
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.
BenQ (Rev.1)
Same as Ver.0
Same as Ver.0
Date :
C3 C4 C5 ORT
Date :
C3 C4 C5 ORT
1 0 0 0
0 0 20 0