Alto MAC 2.2, MAC 2.3, MAC 2.4, Руководство по обслуживанию

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CH1
CH2 CH3
POWER
V A
110
NORL
SHORT
220
NORL
110V
220V
LOAD SEL.
LOAD OUT
LOAD S.P.
AC
UNSWITCH
DC IN
DC OUT
+
+
_
ADR-245
-
+
INPUT
OUTPUT
+
-
- +
SET LEVEL
POWER
OUTPUT (600 )
+ -
POWER
AUDIO GENERATOR GAG-810
0-90dB 0-10dB 0-1.0dB
INPUT
+
-
OUTPUT
+
-
EXT INT
600 LOAD
POWER
LABORATORY DC POWER SUPPLY DUAL TRACKING WITH 5V FIXED
MODEL: GPC-3060D
-
+ GND
-
+
GND - +
5V 3A
CURRET VOLTAGE CURRET VOLTAGE
4 8 16
LINK
LINK
CH-B
CH-A
LF 30Hz
FILTER
OFF ON
OFF ON
BALANCE 1.15V/20K
INPUT
INPUT
CONNECTION
BREAKER
AC IN 50/60HZ
SHOCKHAZARD
RISQUEDE CHOCELECTRIQUE
ELECTRIC SHOCK HAZARD. DO NOT REMOVE COVER.
REFER SERVICING TO QUALIFIED PERSONNEL. SEE
INSTRUCTION MANUAL.
AVIS RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR.
CLIP LIMIT
7.
1. S t ereo
mode
7.
1.
1
I nput
1KHz
s i gnal
,
l oad
4 Ohm
, out put v olt age
should be
m ore t han
32V(MAC2.2)/
44V (MAC2.3)/ 55V(MAC2.4) , (CH -A &CH-
B)
7.1.
2
Set the
SW on the rear
panel
to the STEREO
position
.
7.1.
3 Turn o n t he uni t , t he S I G and C LI P -LE D
should be light
off w hen
whitout
s i gnal
input .
T
he S I G
LED
w i l l
light on when input signal.
I f t he C LI P -LE D
lights on when the
7.1.
4 B andw i dt h, di s t ort i on, S / N rat i o, pl eas e ref er t o t he s pec i f i c at i on .
7.1.
5
Input 1KHz
s i gnal , t urn
on the
C LI P -LI M I T
SW
,
the output is not increase when the input
signal level increases gradually
.
7.1.
6
Input 30Hz
s i ne w av e
, output power
i s 1W.
After
t urn
s on
Fl i t t er , t he
out put will attenuate 9 1.5 dB .
7.
2. Paralle
mode
7.2.
1
Set the
S W t o PA PA L LE L
position
,
input signals from CHA; CHA,B have the output signal
.
7.
3. B ri dge d
mode
7.3.
1
Set the SW to bridged position ,input signal from CHA, the output should be more than 60V(MAC2.2)
/ 80V(MAC2.3 ) / 105V(MAC2.4)
.
28
Test Product
7. Test Procedure and Test Result
output level is too high