LG BH4120SN, Service Manual

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DIGITAL DISPLAY & MEDIA TRAINING MASTER
Does the unit respond to
buttons on the front of the unit?
NO
YES
If the buttons on the front of the unit do not respond, determine if the
product has locked up or if the unit will not turn on. The problem is not
the remote control. Make sure the remote control is the remote that goes
with that particular model.
Does the remote control any
component?
NO
YES
Determine which product the remote is not working. The customer may
need to press the appropriate mode button to make the remote operate
another component. The remote may even need to be programmed to the
other component, especially if the batteries were just changed.
Have the batteries been
changed?
NO
YES
Ask the customer to change batteries. Make sure the batteries are new
and fresh. The batteries do not need to come from a “spare” battery
drawer. Do not mix used and new batteries.
Is the remote working at all?
NO
YES
YES
If the remote does not work anything, then walk the customer through a
remote drain. Remove the batteries from the remote control. Then press
and hold any button down for a minute. This will drain the power out of the
remote and reset it. Universal remotes will have to be reprogrammed.
Does any remote work the unit?
NO
If another remote works the unit, then follow the procedure to FOC the
customer a new remote. If two remotes do not work the unit, the unit will
need service.
Does the customer want to
program their remote?
NO
Please refer to the OM for instructions on how to program remote to TV.
Customer wants to program a remote other than Zenith or LG,
the customer will need to contact the manufacturer of the remote control.
Codes do not work, remote is not compatible.
5-5. Remote Control Not Working