Kalley K-LED55UHDCT2, Руководство по обслуживанию

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Factory Test & Alignment Specification For RT92-AP Series (V1.0)
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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,
and 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.
4.2 Project ID Modification
There are different ID stored in the
EMMC
depending on different Panels settings and Models 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 the ID. There is two methods to modify the ID:
Position Value Test Point
UD60
1.5V 1V5_DDR
U101
2.5V ±1% 2V5
U102
3.3V ±1% 3V3
LD90
12V±10% 12V
LD80
5V±5% 5V
LD7
1.15V±5% 1V15
UT2
3.3V ±1% TU_3V3
UX2
3.3V ±1% 3V3_DEMO