TCL 32E320 Service Manual page 9

The main chip is from MediaTek (MT8223L and MT8223H) and supports input or output as
follows:
Back
Connectors
Side
Connectors
Other
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
Check DC Voltage
1.1.
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:
Description
24V
+12V
+5V
MT8223L
1 analog RF
1 AV input (CVBS + L/R)
1 Component with L/R
1 VGA + audio input
1 HDMI 1.3. with HDCP
1 AV-out with L/R
1 HDMI 1.3. with HDCP
1 USB input
1 AV input (CVBS + L/R)
Serial connector( Location P001)
Test
Location
Min
Page 3 of 12
Factory Alignment Specification for MT23L(H)-AP/LA
1 analog RF
1 AV input (CVBS + L/R)
1 Component with L/R
1 VGA + audio input
1 HDMI 1.3. with HDCP
1 AV-out with L/R
1 HDMI 1.3. with HDCP
1 USB input
1 AV input (CVBS + L/R)
1 Headphone output
Serial connector( Location P001)
Specifications
Type Max
24.0
12.0
5.0
MT8223H
Remark
Unit
V
V Q101 DC-DC
V U108 DC-DC