Test readings, amplifier connections
| Test readings, amplifier connections |
|
Pin No.
|
Lead colour
|
Component/
Function |
In/out
|
Test conditions
|
Across
|
Test reading
|
See
|
|
1
|
|
Line input. Signal, left rear.
Not used. |
In
|
|
|
|
|
|
2
|
|
Signal ground, screen
|
|
|
|
|
|
|
3
|
|
Line input
Signal, left front. |
In
|
|
|
|
|
|
4
|
|
Line input. Signal, right rear.
Not used. |
In
|
|
|
|
|
|
5
|
|
Line input
Signal, right front |
In
|
|
|
|
|
|
6
|
|
Mute control
|
In
|
|
|
|
|
|
7
|
|
No connection
|
|
|
|
|
|
|
8
|
|
Trigger voltage
|
In
|
|
|
|
|
| 4-pin connector (loudspeaker) |
|
Pin No.
|
Lead colour
|
Component/
Function |
In/out
|
Test conditions
|
Across
|
Test reading
|
See
|
|
1
|
GY
|
Loudspeaker right front door (+)
|
Out
|
Connector unplugged from the amplifier.
|
1-2
|
Approx. 3.2 ohms
|
|
|
2
|
BN/RD
|
Loudspeaker right front door (-)
|
Out
|
Connector unplugged from the amplifier.
|
1-2
|
Approx. 3.2 ohms
|
|
|
3
|
YE/WH
|
Loudspeaker left front door (+)
|
Out
|
Connector unplugged from the amplifier.
|
3-4
|
Approx. 3.2 ohms
|
|
|
4
|
OG/WH
|
Loudspeaker left front door (+)
|
Out
|
Connector unplugged from the amplifier.
|
3-4
|
Approx. 3.2 ohms
|
|
| 2-pin connector (power supply) |
|
Pin No.
|
Lead colour
|
Component/
Function |
In/out
|
Test conditions
|
Across
|
Test reading
|
See
|
|
1
|
BK
|
Ground
|
In
|
Always
|
B+ -1
1-B- |
B+
<0.5V |
|
|
2
|
RD
|
Power supply (+30 circuit)
|
In
|
Always
|
2-B-
B+ -2 |
B+
<0.5V |
|
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