Test & Alignment; Pre-Conditions And Power Supply Check; Project Id Modification - TCL L40E5800US Service Manual

Factory Test & Alignment Specification For RT95-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,
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.
Position
UD60
U101
U102
LD90
LD80
LDA0
UT2
UX2

4.2 Project ID Modification

There are different ID stored in the
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:
Value
1.5V
2.5V ±1%
3.3V ±1%
12V±10%
5V±5%
1.15V±5%
3.3V ±1%
3.3V ±1%
EMMC
depending on different Panels settings and Models features,
11
Test Point
1V5_DDR
2V5
3V3
12V
5V
1V15
TU_3V3
3V3_DEMO