LG 50PB2DR-AC (CHASSIS:PB61C) Service Manual ▷ View online
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1
2
Check
HDMI
Cable
Check LGDT1102F(IC402) inputs
3
4
Check CS8415A(IC1006) in/outputs
#14(HDMI_SPDIF), #16(SCK), #17(LRCK),
#18(SPDIF_OUT), #10(SPDIF_CLK)
5
SPDIF BYPASS
CheckMST3361 (IC603) outputs
#125(HDMI_SPDIF_OUT)
Follow the procedure of
COMMON SOUND OUT
Check EPM570T144 (IC301)
Check SPDIF out (R1035)
2) Trouble Shooting Guide
(5)
HDMI NO SOUND
1) Block Diagram
Main
Audio Processor
(MSP4450K)
PWM Modulator
(NSP2100A)
AMP
(TAS5122)
Front Speaker
Monitor Out
HD-2
HDMI
MST3361
System CPLD
(EPM570T144)
CS8415A
SPDIF Out
(Optical)
(Optical)
SPDIF
I2S
SPDIF
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1
2
Check
HDD SATA
Cable
3
Check siI3512(IC1002) outputs
PCI_AD(32-bits), PCI Control signals
Check siI3512 (IC1002) inputs
#14(B+), #15(B-), #19(A-), #20(A+)
Check PPC405GPr(IC100) in/outputs
PCI_AD(32-bits), PCI Control signals,
PER_ADDR(32-bits), PER_DATA(12-bits),
PER Control signals
4
5
Follow the procedure of
COMMON SOUND OUT
2) Trouble Shooting Guide
(6)
RECORD & PLAY NO SOUND
1) Block Diagram
Main
Audio Processor
(MSP4450K)
Sub
Audio Processor
(MSP4458G)
PWM Modulator
(NSP2100A)
AMP
(TAS5122)
Front Speaker
AV
Front AV
Monitor Out
Buffer
(MC33078)
ADC
(CS5331A)
MUX CPLD
(EPM570F256)
PAL Tuner
PAL/DVB-T Tuner
HD-2
PVR SOC
(LGDT1304P)
SiI 3512
HDD
System CPLD
(EPM570T144)
SPDIF Out
(Optical)
(Optical)
TP
I2S
I2S
L/R
I2S
TP
I2S
SPDIF
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(7)
Hardware Test by using Terminal
Start the terminal program ( Tera terminal, DTV Lab)
1 : Press PC keyboard number 1
2 : AC OFF/ON or Push the Reset SW
3 : Enter the command 20 (Hardware test Menu)
Select the Total Test
- 36 -
Testing procedure showed
Watch out !! Your TV System Specification
does not include IEEE1394
If your model is LCD Model ,
does not include I2CModuleTest
Check the FAIL Components (Memory, PCI IC, IIC)
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