Chapter 6 — Service and Repair
Blazing Angels Operation and Service Manual
Page 32 of 64
040-0168-01 Rev. B 3/14/2008
Three 3.5 mm stereo audio cables connect the computer audio ports to the audio amp. Each
audio port on the computer is color coded to help identify the channel. See Figure 32 on page 55
for a diagram of the computer audio ports.
•
The
green
audio port is for the front speakers, left and right.
•
The
blue
audio port is for the rear speakers, left and right.
•
The
pink
audio port is for the bass speaker (subwoofer).
Each speaker is connected to the corresponding speaker output on the audio amp. Figure 20 on
page 31 shows the location of each speaker.
Audio Amp PCB Replacement
To prevent electrostatic discharge (ESD) damage, handle PCBs by the
edges only and use a grounding wrist strap or similar precaution.
Always keep the PCB in an ESD anti-static bag when not installed in
the cabinet to prevent electrostatic damage.
1.
Turn off power and disconnect the cabinet AC Power Cord.
2.
Remove the electronics access panel (see page 25).
3.
Make sure that all connectors are labeled for ease of reconnection. Disconnect the power
harness, speaker wires, and 3.5mm audio cables from the audio amp PCB.
4.
Remove the four screws that secure the PCB to the mounting feet.
5.
Reverse these steps to install the new audio amp PCB.
Front (Marquee) Speaker Replacement
Refer to Figure 27 on page 41 for an exploded view of the marquee and speakers. The front
speakers are mounted below the marquee. Do the following to replace a speaker:
1.
Remove the ten (10) Torx screws that secure the marquee artwork and clear plastic in place.
Carefully remove the clear plastic and artwork.
2.
Disconnect the speaker harness connector inside the marquee.
3.
Remove the nuts from the two (2) speaker mounting bolts inside the marquee, and remove the
speaker with its mounting bracket. Be careful not to pull the speaker wires.
4.
Remove the screws that secure the mounting bracket to the speaker.
5.
Remove the wires from the speaker and install them to the same connectors on the new speaker.
6.
Reverse these steps to install the new speaker.
Rear (Seat) Speaker Replacement
The rear speakers are located behind the two small grills at the top rear of the seat.
1.
Remove the four (4) 1/4-20H Torx screws that secure the speaker grill to the back of the seat.
2.
Remove the four (4) screws that secure the speaker to the seat.
3.
Remove the wires from the speaker and install them to the same terminals on the new speaker.
4.
Reverse these steps to install the new speaker.
