Information subject to change
97-2105006_4-2-15
2105 OPERATOR’S MANUAL –
SECTION 9
38
9
Troubleshooting
9.1 Introduction & Precautions
This section provides a set of procedures for
identifying and correcting problems with the 2105
amplifier. Rather than providing an exhaustive and
detailed list of troubleshooting specifications, this
section aims to provide a set of shortcuts intended
to get an inoperative amplifier back in service as
quickly as possible.
The procedures outlined in this section are direct-
ed toward an experienced electronic technician;
it assumes that the technician has knowledge of
typical electronic repair and test procedures.
Please be aware that the 2105 will undergo fre
-
quent engineering updates. As a result, modules
and electronic assemblies may not be interchange
-
able between units. Particularly, the Main board
undergoes periodic engineering modifications that
may make interchangeability between units impos
-
sible.
9.2 Visual Inspection
Before attempting to troubleshoot the amplifier
while it is operating, please take time to complete
a visual inspection of the internal components of
the amplifier.
1.
To perform a Visual Inspection, first turn the
Breaker/Switch to the Off (O) position.
2.
Disconnect the AC mains plug from the ampli
-
fier.
3.
Wait three to five minutes for the Power Sup
-
ply capacitors to discharge. You can verify the
capacitor discharge by connecting a voltmeter
Vcc and –Vcc test points on the main
board (see
Figure 9.1
). Verify a reading of less
than 50 volts before proceeding.
4.
Inspect the amplifier’s internal components.
Check the following:
5.
Inspect modules for charring, breaks, deforma
-
tion or other signs of physical damage.
6.
Look for any foreign objects lodged inside the
unit.
7.
Inspect the entire lengths of wires and ribbon
cables for breaks or other physical damage.
8.
If there is any physical damage to the amplifier,
please return it to AE Techron for repair.
Figure 9.1 – +Vcc and –Vcc Point Locations
Uninsulated terminals with AC Mains
potential are exposed when the panel is
removed. Do not proceed until AC Mains
have been disconnected.
DANGER
