LG 42PB4DT-UB (CHASSIS:PA72A) Service Manual ▷ View online
- 49 -
BLOCK DIAGRAM & TROUBLESHOOTING GUIDE
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
RECORD & PLAY NO SOUND
Follow the procedure of
COMMON SOUND OUT
- 50 -
BLOCK DIAGRAM & TROUBLESHOOTING GUIDE
Hardware Test by using Terminal
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
- 51 -
BLOCK DIAGRAM & TROUBLESHOOTING GUIDE
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)
Hardware Test by using Terminal
Hardware Test by using Terminal
- 52 -
BLOCK DIAGRAM & TROUBLESHOOTING GUIDE
[Test Items]
0x1 : System Memory
0x2 : HD-2
0x3 : PCI Device(PVRSoC/IEEE1394(TSB43Dx42)/SATA Controller)
0x4 : I2C I/F
0x5 : GPIO Control
0x6 : Flash(8M) Memory
0x7 : Gemstar I/F
0x8 : Power On/Off Sequence
0x10 : Total Test
0xFF: Exit
==> Choose Command : [0] 3
If you want to check
more detail
PCI IC
s
Choose command 3
PCI Device (
PVRSoC) /SATA Controller)
Other Test Items can be easily use such as upper example.
Hardware Test by using Terminal
Hardware Test by using Terminal
Click on the first or last page to see other 42PB4DT-UB (CHASSIS:PA72A) service manuals if exist.