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6-4
Troubleshooting and Maintenance
JBL
RESTORING FACTORY-DEFAULT SETTINGS
The procedure below outlines the process to restore factory-default
settings. Before performing these steps, record custom settings on
the installation worksheet (see page A-12). All parameters will be
reset to their factory-default value. This procedure should be
performed before setup begins.
To restore factory-default settings:
1. Record user-defined settings on the installation worksheet
(see page A-12).
2. If the unit is on, place it into standby by pressing the
(standby) button on the remote control. If the unit is in
standby, skip ahead to Step 3.
3. Power the unit on by pressing the@@@(standby) button
on the remote control.
4. Quickly press and hold the MUTE button on the remote
control until the following hidden menu appears:
The MUTE button must be pressed within 3s of powering
the unit on. If the message “MUTE ON” appears in the top-
left corner of the screen when the MUTE button is pressed,
too much time has passed. Begin again with Step 2.
5. Use the up and down MENU arrows to highlight RESTORE
DEFAULTS, then press the right MENU arrow to restore
factory-default settings. (Selecting the EXIT option with the
right MENU arrow will cancel the restoration of factory-
default settings.)
6. The message “FACTORY SETTINGS HAVE BEEN
RESTORED” will appear on the screen. Press any front
panel or remote control button to restart the unit.
ROUTINE MAINTENANCE
The following routine maintenance should be performed on a
periodic basis:
• Clean the exterior surfaces of the unit with a soft, lint-free
cloth. Do not use alcohol, benzene, acetone-based
cleaners, or strong commercial cleaners. Do not use a cloth
made with steel wool or metal polish. If the unit is exposed to
a dusty environment, a low-pressure blower may be used to
remove dust from its exterior.
• Change the remote control batteries as needed. When the bat-
teries are low on power, the remote control will enter a low-
voltage condition that prevents it from operating the unit.
Operation will be restored when new batteries are installed.
FACTORY SETTINGS
EXIT
RESTORE DEFAULTS