Amplifier Pcb Hook-Up Procedures - Bose Loewe Concertos Acoustimass 61247 Service Manual

Amplifier PCB Hook-Up Procedures

This procedure will allow you to connect and operate the amplifier PCB by itself, with no DSP
board connected. This will enable you to determine whether the amplifier PCB or the DSP PCB
is defective.
If you can turn the the amplifier PCB on, and perform the test procedures later in this section, then
the amplifier PCB should be fine and the DSP board is most likely at fault. You can isolate the
failure on the DSP board further using the DSP troubleshooting procedures later in this section.
Below is a picture of the cable for the audio outputs on the amplifier PCB which will be connected
to J701 on the amp PCB. This cable can be built using the interconnect cable, Loewe part number
169-90370.992, and soldering wires to the connector end.
169-90370.992
Figure 2. Cable for Amplifier Output Connection at J701
Figure 3. Output Wire Connection View at J701
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