BenQ Q7T4-FP71G, Service Manual

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Q7T4-FP71G LCD Monitor Service Guide
Engineering Specification
8
Confidential
(2) Random
5 ~100 Hz, 0 dB/Oct. 0.015
g
2
/Hz
100 ~200 Hz, -6 dB/Oct.
200 Hz, 0.0038 g
2
/Hz
Equivalent to 1.47 Grms, All
primary axis, 20 min per-
orientation, total is 60 min.
(3) Procedure:
Confirmed sample with
appearance and function ready
before testing then compare
with after test record as
brightness, uniformity and
contrast ratio. Perform
random vibration after
sine-wave vibration test.
(2) Unpackaged Vibration
Unpackaged, Non-Operating
Test Spectrum:
20 Hz 0.0185(g2/Hz)
200Hz 0.0185(g2/Hz)
Duration : 5 Minutes
Axis : 3 axis ( Horizontal
and Vertical axis ,Z axis)
√
(3) Drop
Package, Non-Operating
91 cm Height (MP stage)
(1 corner, 3 edges, 6 faces)
√
(4) Shock
Wooden package,
Non-Operating
Waveform: half sine
Faces: 6 sides/ per orientation
3 shocks.
Duration: <3ms
Velocity accelerate: 75g
√
3.6 Electrostatic Discharge Requirements
Item Condition Spec OK N.A Remark
Electrostatic Discharge
IEC801-2 standard
Contact: 8KV
Air: 15KV
√
3.7 EMC
Item Condition Spec OK N.A Remark
Electric
Band 1 < 10 V/m
Band 2 < 1 V/m
√
TCO03
Magnetic
Band 1 < 200nT
Band 2 < 25nT
√
FCC part 15J class B
EMI
EN55022 class B
After Mass production under
1dBuv for constant measure.
Besides DNSF and VCCI
class-2 are optional.
√
3.8 Reliability
Item Condition Spec OK N.A Remark
MTBF Prediction Refer to MIL-217F > 60,000 Hours
√
Excluding CCFL
CCFL Life time At 25±2
℃
, under 7.0mA 50,000 Hours (typ.)
√
See Note-4
Note-4: CCFL lifetime is determined as the time at which brightness of lamp is 50%. The typical lifetime of
CCFL is on the condition at 7.5mA lamp current.