DOWNLOAD LG 32LG30 (CHASSIS:LA85D) Service Manual ↓ Size: 5.87 MB | Pages: 35 in PDF or view online for FREE

Model
32LG30 (CHASSIS:LA85D)
Pages
35
Size
5.87 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32lg30-chassis-la85d.pdf
Date
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LG 32LG30 (CHASSIS:LA85D) Service Manual ▷ View online

- 17 -
Check HDMI Cable conductors for
damage.
Check JK800/ JK801/ JK903
Yes
Yes
Check input signal format.
Is it supported?
Yes
Check EDID NVRAM(IC800, 801, 902)
Power & I2C Signal (#5, #6)
Replace Jack.
No
Check HDMI Signal.
Yes
Check signal line.
No
Replace the defective IC or re-download
EDID data.
No
Check IC802 Voltage Level 3.3V, 5V &
Output
Replace Power supply regulator or IC802.
No
Check HDCP key NVRAM(IC102)
power & I2C Signal (#5, #6)
Replace the defective IC.
No
Yes
Yes
Check IC802 clock signal
#26, #27
Replace IC802.
No
Yes
Replace Mstar (IC100)
Yes
7. HDMI Video
- 18 -
8. All Source Audio
9. Digital TV Audio
Check Mstar I2S Output
R1048, R1050, R1051
Check IC501 Power 16V, 3.3V, 1.8V.
Yes
Yes
Make sure you can’t hear any audio.
Yes
Check Connector & P500
Check signal line. Or replace IC100.
No
Check Output Signal L503, L504
Yes
Replace NTP or check output line.
No
Replace connector if found to be damaged.
No
Yes
Check speaker resistance and cone
damage.
Replace speaker.
No
Check Video output.
Follow procedure digital TV video
trouble shooting guide.
No
Yes
Follow procedure All source audio
trouble shooting guide.
Replace Mstar IC.
No
10. Analog TV Audio
Check Video output.
Follow procedure digital TV video
trouble shooting guide.
No
Yes
Check SIF buffer signal.
Check SIF Signal line.
No
Yes
Follow procedure All source audio
trouble shooting guide.
Replace Mstar IC.
No
- 19 -
11. HDMI Audio
Check video output from source device.
Follow procedure HDMI video
trouble shooting guide.
No
Yes
Check EDID NVRAM(IC800, IC801, IC802)
Power & I2C Signal(#5, #6)
Check SIF Signal line.
No
Yes
Follow procedure All source audio trouble
shooting guide.
Replace Mstar IC.
No
- 20 -
BLOCK DIAGRAM
1. VIDEO Path
Comp1
(DVD/DTV)
Comp2
(DVD/DTV)
YPbPr_2
YPbPr_1
AV1
S-AV1
AV2
TU_CVBS
AV_1
AV_2
MSTAR
(From Tuner)
RGB
(PC/DTV)
RGB
HDMI 1
HDMI 2
    HDMI 1(TMDS)
TMDS
Switch
TMDS
Switch
HDMI 3
IF_P/N
S_Video1_Y/C
IC802
    HDMI 2(TMDS)
    HDMI 3(TMDS)
    TMDS
IC903
Switch
Switch
YPbPr
IC400
LGDT
3304
LGDT
3304
TP
(MPEG Transport stream)
(From Tuner)
IC100
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