Table of Contents
Advertisement
Factory Test & Alignment Specification For MT56-AP Series (V1.0)
4. Test & Alignment
According to the requirement of order, we suggest take the below steps to finish the appropriate settings.
Note:
All tests and measurements mentioned hereafter have to be carried out at a normal mains voltage
(100 ~ 240 VAC)
All voltages have to be measured with respect to ground, unless otherwise stated
All final tests have to be done on a complete set including LCD panel in a room with temperature of
25+/-7° C
The Picture Performance assessment such as White Balance (luminance and colour temperature)
has to be performed into subdued lighted room after at least 60min of warm-up in order to avoid any
temperature drift influence (colorimetry vs time).
4.1 Pre-Conditions and Power Supply Check
Before power-on, please check the board according to the relevant block diagram and circuit diagram,
make sure that no serious issue or mistake can destroy the board. For example, the output of DC/DC and
LDO should not be shorted to ground.
Supply a suited voltage and power-on, then check the voltage according to the relevant block diagram,
circuit diagram and voltage spec, the error should be less than 5%, for example, the voltage for main chip
(+3V3, +2.5V, VDDC1V15, 1V5_DDR, etc.), the voltage for TUNER (TU_3V3), the voltage for amplifier
(AMP_VCC), etc.
Position
P103
LDH1
P103
UD33
LDJ1
LDB0
UD18
UT2
U201
L201
4.2 Project ID Modification
There are different ID stored in the EMMC depending on different Panels settings and Model features, but
there's only one key branching Project ID able to ensure normal display. And when you power on the TV
set, you should make sure the Project ID is accord with the BOM description. If not, you need to modify
Value
12V± 10%
5V± 5%
3.3V ± 1%
3.3V ± 1%
1.5V ± 1%
1.2V± 1%
1.8V ± 1%
3.3V ± 1%
3.3V ± 1%
1.1V ± 1%
11
Test Point
12V
+5V
3V3SB
3V3
DDR_1V5
CORE_1V2
1V8
TUNER_VCC
3V3_DEMO
NC
Advertisement
Chapters
Table of Contents
