Test S/W - LG LRM-519 Service Manual

1. TEST METHOD USING THE DEBUG BOARD
There are two test methods when there is an issue with the main board.
When it is not properly booted and the composite video is not displayed, you can check the status of the board
using the Debug Board for debugging prepared in the Debug port of the main board.
The Debug Board is composed as follows.
- 7-Segment that indicates the board status
- The connector interfacing the Debug port
- Boot ROM for testing: Not used.
How to use the Debug Board
The Debug Board is connected to the J802 of the main board.
MO
Eth
ern
RT
L81
Error code indicated on the Debug Board

TEST S/W

Au Au
P
Au Au
Vi
Co
2
8
A
FS4
54
CX2
830
K4 K4 K4
S6 S6 S6
J802
S
Au
S
Vi
Cele
K4
S6
1-8