Manual

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CONVERTING THE TX3420
INTO AN UNDERDASH RADIO
If your installation does not require the use of a remotely
mounted control head, you can convert your TX3420 to a
compact underdash radio by fitting the remote head front
panel directly to the main unit as follows.
Remote Head Unit Disassembly
1. Remove the two black screws from the metal cable-
clamp plate at the rear of the remote unit.
2. Remove the 4 screws from the remote unit’s rear case
and remove the case.
3. Slide the rear case down the connecting cable and
carefully unplug the cable from the PCB.
Main Unit Disassemble.
1. Remove the top and bottom covers from the main unit.
2. Pull the dummy front panel away from the chassis and
carefully unplug the connecting cable.
Reassembly
1. Plug the connecting cable from the main unit into the
remote head front panel.
2. The remote front panel can be oriented so that the
speaker in the main unit is facing either up or down.
Position the front panel as required and slide it onto the
main chassis. If the front panel is oriented so the speaker
is facing UP, ensure the connecting cable is not crushed
between the front panel PCB and the chassis. Align the
holes in the top and bottom of the plastic front panel
with the case screw holes in the chassis.
3. Refit the top and bottom covers and install the
cover screws.
Console Mounting the TX3420
For console mounting, a flush mounting DIN Adaptor
MBD001 is available as an optional accessory. The adaptor
includes mounting brackets and a specially designed
front panel escutcheon to suit most vehicle installations.
The console mount is particularly suitable for dashboard
mounting TX3420’s that have been converted from remote
units to under-dash units (as described above). Installation
instructions are provided with the bracket. See your nearest
GME retailer for details.
DC POWER CONNECTION
The TX3420 is designed for 13.8 Volt DC, negative earth
installations only (i.e. where the negative terminal of the
battery is connected to the chassis or frame of the vehicle).
There are two recommended methods of installation.
Radio remains ON when
the ignition switch is OFF
Connect the radio's negative (black) lead to the vehicle's
chassis, or if preferred, directly to the battery's
negative terminal.
The radio's positive (red) lead should be connected via the
2 Amp fuse to the battery's positive terminal. Alternatively,
the positive lead could be connected into the fuse box
at a point that has +13.8 Volts continuously available
(preferably the battery side of the ignition switch) via
the 2 Amp fuse.
Radio turns OFF with the ignition switch
Connect the radio's negative (black) lead to the vehicle's
chassis, or if preferred, directly to the battery's
negative terminal.
The radio's positive (red) lead should connect to an
accessory point in the vehicle's fuse box via the 2 Amp fuse.
This point should supply +13.8 Volts only when the ignition
switch is turned ON or in the ACCESSORY position.
Connect plug
Align holes
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