Factory Alignment Specification
TestAlignmentSpecification for MT62B-LA.doc (Page 3 of 11)
MT62B-LA chassis is a LA LCD platform with ISDB-T, the main chip is from Mediatek (MTK5362
series) and supports below inputs:
x
One analog and digital mixed RF (PAL-M /N, NTSC-M, ISDB-T)
x
One Side AV input
x
One Side S-Video input
x
Two CMP (Support from 480i up to 1080p)
x
One VGA
x
Three HDMI (Support 480i/p, 576i/p, 720p up to 1080i/p. Compliant v1.2 with HDCP, audio
included as EIA-861B standard.)
x
One Headphone output
x
One SPDIF output
x
One AV output
More relevant details are listed into the Spec.
INFO:
ª
All tests and measurements mentioned hereafter have to be carried out at a normal mains voltage
(
100 ~ 240 VAC
)
ª
All voltages have to be measured with respect to ground, unless otherwise stated
ª
All final tests have to be done on a complete set including LCD panel in a room with temperature of
25+/-7°C
ª
The White Balance (color temperature) has to be performed into subdued lighted room after at
least
1 hour
of warm-up/burn-in. This is applicable for both Alignment and Picture Performance
evaluation at OQA in order to be set free of any temperature drift (colorimetry vs. time)
1. Electrical Assembly Alignment
1.1.
Preconditions – DC/DC Check
Before Power On the chassis, please check and make sure that U811,U9,U31, U7, U6, U11,
U5,U4,U34,C74(positive pin) , C62(positive pin) , C76(positive pin) outputs are not shorted to
ground. Then supply voltage to P19 (according to PS module in related BOM) and test the
relative voltage.
Position
Value
Remarks
U811(optional)
3.3V +/-5%
+3V3SB
C74 (positive pin)
5.0V +/-5%
+5V
U9
3.3V +/-5%
DV33
U31
3.3V +/-5%
AV33
U10
3.3V +/-5%
B3_3.3V
U7
1.2V +/-5%
AV125
U2
1.2V +/-5%
B4_1.2V
U6
2.5V +/-5%
AV25
U1
2.5V +/-5%
B2_2.5V
U5
7.5V +/-5%
AV9V
C62 (positive pin)
1.8V +/-5%
DDRV
C76 (positive pin)
1.0V +/-5%
DV11
Note: Different models may have different configurations of DC/DC circuit.
