DOWNLOAD LG 32LN549E / 32LP620H (CHASSIS:LB3AZ) Service Manual ↓ Size: 5.3 MB | Pages: 40 in PDF or view online for FREE

Model
32LN549E 32LP620H (CHASSIS:LB3AZ)
Pages
40
Size
5.3 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32ln549e-32lp620h-chassis-lb3az.pdf
Date
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LG 32LN549E / 32LP620H (CHASSIS:LB3AZ) Service Manual ▷ View online

- 16 -
2. Digital TV Video
3. Analog TV Video
Check the Stand-by Voltage
P401 3, 5pin : +3.5V_ST 
Check the RF cable and RF signal.
Check the Tuner 3.3V 
; L2606
Check the Tuner 3.3V
; L2606
Check the LVDS output signal of 
Mstar IC.
Check the LVDS output signal of 
Mstar IC.
Check the Tuner 1.8V.
IC2603 2pin : 1.8V
Check the Tuner 1.8V.
IC2603 2pin : 1.8V
Check the IF_P/N signal
TU2601~3 10/11pin
Check the CVBS signal 
TU2601~3 8pin
Exchange the L2606.
Exchange the L2606.
Exchange the Mstar(IC101) 
or Main board.
Exchange the Mstar(IC101) 
or Main board.
Exchange the IC2603.
Exchange the IC2603.
Exchange the Tuner.
Exchange the Tuner.
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
- 17 -
4. Component Video
5. RGB Video  (LN549E Only)
Make sure the input signal type and  
our TV can support the signal.
Make sure the input signal type and 
Our TV can support the signal.
Check Component cable(gender) 
defect or status of conductor
Check the RGB cable defect or 
status of conductor.
Make sure the LVDS output signal of 
Mstar IC.
Check the DSUB_DET signal.
Check the LVDS output signal of 
Mstar IC.
Make sure the JK1603, COMP Y/Pb/
Pr signal
Check the EDID, I2C signal.
Make sure the Rear_COMP_DET 
signal.
Check the JK1104 H / V_Sync / R / 
G / B signal.
Exchange the Mstar(IC101) 
or Main board.
Exchange the resistor R1146 / R1147.
Exchange the Mstar(IC101) or Main 
board.
Exchange Component Jack.
Download the EDID data, exchange 
the Mstar(IC101) or Main board.
Exchange the R9912.
Exchange the D-SUB Jack.
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
- 18 -
6. HDMI Video
Make sure the input signal type and 
Our TV can support the signal.
Check the HDMI cable defect or 
status of conductor.
Check the HDMI_DET(HPD) signal.
Check the HDMI signal.
Check the LVDS output signal of 
Mstar IC.
Check the EDID, I2C signal
R884 ~ R891
Check the HDMI Jack.
JK801, JK802, JK803
Exchange the Resistor.
R810, R811, R823
Exchange the Mstar(IC101) or Main 
board.
Exchange the Mstar(IC101) or Main 
board.
Exchange the IC or download the 
EDID data.
Exchange the HDMI Jack.
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
- 19 -
7. Audio of All input
Check the Mstar Audio_Master_CLK signal.
R148
Check the Audio output signal.
IC501 1, 2, 3, 4pin
Check the AMP I2C Line.
R140, R141
Check the connector P501.
Check the Mstar I2S output.
IC501 9, 10, 11pin
Check the Speaker resistor or connector.
Check the speaker menu.
(menu -> sound -> TV speaker)
Check the voltage of AMP IC(IC501).
24V, 3.3V
Exchange the Mstar(IC101) or Main 
board.
Exchange the Audio AMP.
IC501
Check the I2C signal or exchange the 
Mstar(IC101).
Exchange the connector If 
the connector is defect.
Check the I2C signal or
Exchange the Mstar(IC101).
Exchange the speaker.
Menu toggle
Exchange the AMP IC or Main board.
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
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