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2. Plug the amplifier into the AC wall socket.
3. Standing off to one side, turn the power switch on. Observe the amp for about a
minute to make sure no smoke is curling out of any of the modules.
4. If all seems calm, measure the voltage on C12 (see Figure 2). Write down the
number here:
The voltage on C12 was ____________Volts DC.
• If this number is between 66 and 78 Volts, then your power supply is good.
• If this number is outside this range, your power supply has a problem.
Section 3: Saving the Stuff that Should Be Saved
Cutting the wires on the old amplifier modules
Make your life easier by following this advice:
1. Print out a big copy of the pictorial diagram (Figure 2).
2. Set the print out near the amp.
3. Align the picture and the amp in the same orientation.
4. Verify twice before cutting once!
Removing the LEFT channel module
To remove the LEFT channel module, cut the following wires in the following places:
Step
Which Wire
1
The wire from PC-15 eyelet 5 to LEFT
PC-14 eyelet 10
2
The wire from C12 + terminal to C of
LEFT Q5.
3
The wire from LEFT PC-14 eyelet 9 to
RIGHT PC-14 eyelet 9.
4
The wire from C7 LEFT + terminal to
LEFT PC-14 eyelet 8.
5
The wire from C7 LEFT - terminal to
LEFT PC-14 eyelet 11.
6
The wire from the LEFT input socket to
LEFT PC-14 pin 12 (typically a green
wire).
7
The wire from the LEFT input socket
ground to LEFT PC-14 pin 13 (this is
typically a black wire).
8
The wire from LEFT Q6 E terminal to
LEFT Speaker ground terminal.
You may not be able to reach your cutters to LEFT Q6 E terminal. Don't worry. We'll
make it easier now, while we check your work to this point. With the exception of this
Where to Cut
Close to PC-15 eyelet 5
Close to C of LEFT Q5
Close to LEFT PC-14
eyelet 9.
Close to LEFT PC-14
eyelet 8
Close to LEFT PC-14
eyelet 11
Close to LEFT PC-14
eyelet 12
Close to LEFT PC-14
eyelet 13
Close to the LEFT Q6 E
terminal. This may be
difficult. If so, don't worry
and read on!
Page 7 of 32
Done
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Table of Contents
Troubleshooting
