Factory Alignment Specification for MT23L(H)-AP/LA
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The main chip is from MediaTek (MT8223L and MT8223H) and supports input or output as
follows:
MT8223L MT8223H
1 analog RF
1 analog RF
1 AV input (CVBS + L/R)
1 AV input (CVBS + L/R)
1 Component with L/R
1 Component with L/R
1 VGA + audio input
1 VGA + audio input
1 HDMI 1.3. with HDCP
1 HDMI 1.3. with HDCP
Back
Connectors
1 AV-out with L/R
1 AV-out with L/R
1 HDMI 1.3. with HDCP
1 HDMI 1.3. with HDCP
1 USB input
1 USB input
1 AV input (CVBS + L/R)
1 AV input (CVBS + L/R)
Side
Connectors
1 Headphone output
Other
Serial connector( Location P001)
Serial connector( Location P001)
Serial connector Definition:
Pin1:VCC Pin2:RXD Pin3:TXD Pin4:GND
More relevant details are listed into the Spec.
INFO:
ª
All tests and measurements mentioned hereafter should be carried out at a normal mains
voltage (100 ~ 240 VAC)
ª
All voltages should be measured to ground, unless otherwise stated
ª
All final tests should be done on a complete set including LCD/LED panel in a room with
temperature of 25+/-7°C
ª
The White Balance (color temperature) has to be performed in subdued lighted room after at
least 1 hour of warm-up/burn-in.
1. Electrical Assembly Alignment
1.1.
Check DC Voltage
Before Power On the chassis, please check and make sure that U103, U104, U105, U106, U108,
U502,etc outputs are not shorted to ground.
Check supply voltage, basing on the table below:
Specifications
Description
Test
Location
Min Type Max Unit
Remark
24V
24.0
V
+12V
12.0
V
Q101
DC-DC
+5V
5.0
V
U108
DC-DC
