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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.
User interface keypads
exhibit strange behavior
No
Is keypad connected
to the correct zone on
the E-4 unit?
Yes
Is the keypad
No
connector wiring
correct?
Yes
Does the Installer™
Yes
Error Log list any periph-
eral controller
faults?
No
Contact Bose
Customer Service.
8.0 E-4 System Troubleshooting
Connect the keypad to the correct
zone on the E-4 unit.
Correct the keypad connector
wiring.
See troubleshooting for the
peripheral controller.
8.4.4 Bad sound in a zone
Bad sound
Is the sound
unnatural?
No
Is the AMP OUTPUT
indicator flashing?
No
Are input and
output indicators green
and sound is
distorted?
No
Is the input signal
clean at the E-4 input?
No
Verify source
hardware settings
68 of 76
Verify that the correct Speaker EQ
is selected in the Installer™ soft-
ware for that zone.
Yes
Verify that the speakers are wired in
phase. Check the rear panel mark-
ings.
Reduce the input gain using
Yes
Installer™ software until the
indicator is solid green.
Verify that the input source signal
Yes
is clean. If source is from a mixer,
decrease the mixer gain.
Verify that the loudspeakers are
not being overdriven or are dam-
aged.
Yes
Verify that the total load imped-
ance presented to the E-4 output
is within specified limits for the
selected mode of operation.