Bca Disassembly - JBL A6000GTi Service Manual

137159-1 Rev. 1

4.3.7 BCA Disassembly

1. Remove BCA assembly from amplifier (see Section 4.3.6).
2. Using a Philips screwdriver, remove four screws holding coils down.
3. Under the four screws just removed there is a plastic cap (large washer). Remove all
four caps.
4. Disconnect the current sense cable from the Coil PWA. See Figure 4.8, the other end
is connected to the input PWA.
5. Remove eight wires that connect the coil PWA to the Main PWA (2-red, 2-black, 2-blue,
2-black/white) via a faston connection. Carefully remove the hot melt glue around the
cable as well.
6. Remove the Coil PWA.
7. Using a T-15 screwdriver, remove 12 Torx-head screws from the spring clips on the
FETs.
8. Remove the four spring clips and four heat sinks.
9. Flip assembly over.
10. Using a T-15 screwdriver, remove 6 Torx-head screws from output filter board.
11. Remove output filter board and main board from plastic holder.
2003 Crown Audio, Inc.
A6000GTi Service Manual
Maintenance 4-8