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8.0 E4 System Troubleshooting
8.4.3 User interface keypads do not
operate correctly
• Check wiring of RJ-45 connectors.
• Check for breaks/shorts in cable.
•Using the Installer™ software, check the Error Log for a periph-
eral controller error.
8.4.4 Bad sound in a zone
User interface keypads
exhibit strange behavior
Is keypad connected
to the correct ZONE
on the E4 unit?
Connect the keypad to the correct
zone on the E4 unit.
No
Yes
Correct the keypad connector
wiring.
See troubleshooting for the
peripheral controller.
Is the keypad
connector wiring
correct?
Does the Installer™
Error Log list any periph-
eral controller
faults?
Contact Bose
Customer Service.
Yes
No
No
Yes
Are all
sources to be
controlled assigned to
the ZONE? (Std. and
AV keypad)
Is the
page source
assigned to the ZONE?
(Paging keypad
only)
Yes
No
Yes
No
Check source assignments
using Installer™ software.
Check source assignments
using Installer™ software.
Bad sound
Is the sound
unnatural?
Verify that the correct Speaker EQ
is selected in the Installer™ soft-
ware for that zone.
Verify that the speakers are wired in
phase. Check the rear panel mark-
ings.
No
Yes
Reduce the input gain using
Installer™ software until the
indicator is solid green.
Verify that the input source signal
is clean. If source is from a mixer,
decrease the mixer gain.
Is the AMP OUTPUT
indicator flashing?
Are input and
output indicators green
and sound is
distorted?
Verify source
hardware settings
Yes
No
No
Yes
Verify that the loudspeakers are
not being overdriven or are dam-
aged.
Verify that the total load imped-
ance presented to the E4 output
is within specified limits for the
selected mode of operation.
Is the input signal
clean at the E4 input?
No
Yes
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