Troubleshooting - Samsung HLR4677WX/XAA Service Manual

3. Troubleshooting

3-1 Flow Chart for Malfunction
If the DLP turns on
No
Check the Power Cord
Does the LAMP turn on?
No
2)
Check if LED1 on the
Analog Board turns on?
Yes
Replace LAMP
Check Cables connected to
BALLAST. If necessary,
replace BALLAST.
Check Cables connected to
DMD Board.
If necessary, replace DMD Board.
Samsung Electronics
Yes
Can you see anything
in the screen?
No
Yes
1)
Check DVI Cable.
If necessary, replace DVI Cable.
No
3)
Check if DMD Fan is running?
No
Check Cables connected to
Power Board. If necessary,
replace Power Board.
Yes
Can you see OSD menu
running in the screen?
No
Check Cables connected to
Digital Board. If necessary,
replace Digital Board
Check Cables connected to
DMD Board. If necessary,
replace DMD Board.
Yes
Check Cables connected to
Analog Board.
If necessary, Analog Board.
Troubleshooting
Yes
Can you see Digital
Channel broadcast ?
No
Replace POD Channel Board
1) DVI Cable
2) LED1
3) DMD Fan
3-1