LG BH4120SN Service Manual page 17

DIGITAL DISPLAY & MEDIA TRAINING MASTER
2-2. Blue Screen
The entire screen is a solid blue color.
Does the BD on-screen menu
appear?
YES
What cables is the customer
using to connect the BD?
YES
Is the TV set to the correct input?
YES
Is the customer able to watch TV
programming?
YES
Can the customer connect the
BD to another TV?
YES
Has the customer tried another
set of cables?
Make sure the customer did not select 480i resolution in the menu of BD-
NO
HTS if using HDMI connections. Change resolution on upconversion BD-
HTS by pushing the resolution button of the remote controller. HDMI don't
Determine what cables the customer is using to connect the BD to the TV
and if connected properly. Refer to OM for connections. Tighten any loose
NO
cables. Make sure the customer is not connecting a BD to VCR or BD to
DVD Recorder. Copy protection can distort the picture on older VCR
Make sure the TV is on the correct input. Turn TV off, then on to
NO
determine input. Video when using composite, or component.
DVI when using DVI, and HDMI when using HDMI.
If the customer is not able to watch television then he may have a problem
NO
with his television, especially if the cable signal comes through on a
different input. If the customer can not get a TV program, then he still may
have a problem with the particular input on his TV.
Have the customer connect the BD to another TV in order to determine
NO
if the problem is the BD or the TV. Refer to the OM for connections
assistance. If the BD works on the second TV, then the customer has a
Have the customer try another set of cables. A bad cable can also cause
NO
video problems. Test the cable with another device to the TV to also
determine if the TV is bad. If BD is problem, please see service chart for
2-8
support 480i resolution.
models.
problem with his TV.
service information.