15
10.3. When Using an External Amplifier
Step 1.
Connect the unit’s External Line Output terminal to the external amplifier’s AUX Input terminal or the
other units Line Input terminal using a phone plug cable. Output sensitivity is 0 dB, 1 kΩ. (0 dB = 1 V)
Symptom
Cause
Remedy
The power indicator lamp does not
light even when the power switch
is set to the ON position.
(Power is not supplied.)
[When operated on AC power]
The power plug is not connected
to an AC outlet.
Insert the power plug into the AC
outlet.
[When operated on battery]
Battery not inserted with
correct polarity.
Reinstall the battery correctly.
The low battery indicator does
light.
[When operated on battery]
Battery discharged.
Charge battery.
No sound output.
The Internal or External switch is
set to the External position.
Set the switch to the Internal
speaker position.
The volume control is set to the “0”
position
Rotate the volume control
clockwise.
Wireless Microphon
e
The Radio signal reception
indicator lamp does not light.
(No signal reception.)
The tuner unit is not installed.
Install the tuner unit.
The wireless microphone’s power
switch is switched OFF.
Set the wireless microphone power
switch to the ON position.
The wireless microphone’s
batteries have lost their charge.
Replace the microphone’s
batteries with new ones.
The wireless microphone’s
frequency setting (Channel)
does not match the tuner unit’s
setting (Channel).
Set both the wireless microphone
and the tuner unit to the same
frequency (Channel).
No sound output.
The volume control is set to the “0”
position.
Rotate the Volume control knob
clockwise.
USB/SD Car
dB
luetooth
Replace the format to MP3 or WAV.
USB / SD Card problem.
Replace USB / SD Card of the
other / new.
No sound output.
Can no connection.
Connection has not been
Has been connected to the others
The file can not be read.
Format file is not supported.
Setting MP3 unit volume in volume
minimum position.
successful.
first.
Reset and reconnected.
Wait for the connection to the other
in non-enable.
Push in MP3 from V 0 to V 1 ~
V 32 (as needed).
OPEN
OPEN
Pin cable
01
0
LINE OU T
AUX IN
LO W
AUX IN (MONO )
HIGH
WIRED MI C
TONE
External output terminal
Phone plug cable
External amplifier, etc.
ref A-2000
OUTPUT RATED 240W
model A-2240 H
MADE IN INDONESIA
TOA Corporation
360W
MAX
CAUTION !
OUTPUT
Ω
ON
OFF
PHANTOM
0
-30dB
220-240V~ 50/60Hz 238W
20A
21
31V
COM
Ω
4
COM
24V
42
Ω
100V
REC OUT
AUX 2
1
2
AUX 1
3
MUTE ADJ
Ω
70V
CASE BEFORE DISCONNECT POWER SUPPLY.
DO NOT REMOVE TERMINAL OUTPUT COVER AND
INPUT
DO NOT USE THESE 4 , 70V AND
100V TERMINALS AT THE SAME TIME
-20dBV 10k
Ω
-20dBV 10k
Ω
UNBALANCED
UNBALANCED
0dBV 600
Ω
-60dBV 600
Ω
BALANCED
Ω
-60dBV 600
Ω
BALANCED
BALANCED
-60dBV 600
UNBALANCED
Step
1
11. TROUBLESHOOTING
