16
GROUND ZERO
Wiring connections
Connector A
Connector B
A1 Not connected
1. Rear right speaker (+)
A2 To telephone control terminal
2. Rear right speaker (-)
A3 Not connected
3. Front right speaker (+)
A4 To terminal always supplied with power
4. Front right speaker (-)
A5 To system control terminal of the power amp or
Auto- Antenna control terminal (max. 100mA 12V DC).
5. Front left speaker (+)
A6 To dimmer control terminal
6. Front left speaker (-)
A7 To electric terminal controlled by ignition switch
(12V DC) ON/OFF
7. Rear left speaker (+)
A8 To vehicle (metal) body
8. Rear left speaker (-)
17
GROUND ZERO
Trouble shooting
Symptom
Cause
Remedy
General
Power does not
turn on (No
sound is
produced).
Fuse is blown.
Replace with a fuse of
the same rating
amperage. If the fuse
blows again, consult your
local distributor.
Incorrect wiring.
Consult your local
retailer.
No sound
comes from the
unit or its
external
amplifier
Wiring for amplifier
output is incorrect, or
there is a short circuit
among the output
wiring.
Refer to the unit wiring
diagram to check proper
connections, make sure
the wiring is done
correctly.
The unit is in MUTE
mode.
Turn off the MUTE
function.
RCA output wiring is
incorrect
Check and properly
connect the RCA output
with the external
amplifier.
Wiring between
external amplifier’s
REM terminal and the
unit’s antenna lead is
incorrect, or antenna
output lead of the
unit is short circuit to
ground.
Properly connect the
REM terminal of the
external amplifier and the
unit’s antenna output
lead.
Nothing
happens when
buttons are
pressed.
Display is not
accurate.
The microprocessor
has malfunctioned.
Turn off the power, Then
press the OPEN button
and remove the front
panel. Press the RESET
button for about 2
seconds.
Panel or main unit
connectors are dirty.
Wipe the dirt off with a
soft cloth moistened with
cleaning alcohol.
CD
Sound skips or
is noisy
Compact disc is dirty
Clean the compact disc
with a soft cloth, avoid
scratching the surface of
the disc.
Compact disc is
heavily scratched or
warped.
Replace with a compact
disc without scratches.
Sound is poor
directly after
power is on.
Water or moisture
may have formed on
the internal lens.
Let it dry for about 1
hour with the power on.
