Haas Simulator AD0443 Replacement

Simulator - Audio Amplifier PCB - Replacement - NGC - AD0443

Introduction

This procedure will show you how to replace the Audio Amplifier PCB on a NGC simulator.
This document applies to the following kit:
• 93-7540 Service Kit, Simulator Audio Amplifier PCB
Replacement
Simulator - Audio Amplifier PCB - Replacement - NGC
Page 1 of 2 pages
AD0443
Turn off the simulator and remove the power
plug.
Remove the back cover [1].
The audio amplifier PCB is located on the bottom
of the simulator near the speaker.
Disconnect the audio input [2], power [3] and
speaker [4] cables from the audio amplifier PCB.
Squeeze the 4 retaining tabs [5] to remove the
audio amplifier PCB.
Install the audio amplifier PCB and connect the
audio input, power and speaker cables.

Note: Make sure the speaker wires [4] are
installed with the correct polarity. The red wire is
positive (+) and the black wire is negative (-).
Set the volume knob [6] to the half volume
position. To find the half position, rotate the
volume knob all the way to the left then all the
way to the right and then set it to the half
position.
LAST UPDATED: 03/11/2019