Troubleshooting - Speaker / Audio Issues - Vision Fitness TF20 Service Manual

3.8 TROUBLESHOOTING – Speaker / Audio Issues
1) SYMPTOM:
a. The speaker has no sound output; the headphones have no sound output.
2) SOLUTION:
3.8.1 Elegant
a. If the speaker has no sound output, confirm whether the speaker wire is well-connected with the UCB.
b. If well-connected, make sure that the audio output short-circuit terminals are tight. Refer to the
electrical diagram to see where the audio output short-circuit terminals should be plugged in at.
c. If all are well-connected, update the OS, Software and IO Versions. If the problem persists, replace the UCB.
3.8.2. Touch
a. If the speaker has
b. If well-connected, use a multi-meter to confirm whether the audio output terminal switch is connected.
figure below:
c. If all wiring is well-connected, update the OS, Software and IO Versions. If the problem persists, replace the UCB.
d. If the speakers have sound output, but headphones have no sound output, replace the headphone board. If the
problem persists, replace the headphone wire.
CHAPTER 3: Troubleshooting
no sound output, confirm whether the speaker wire is well-connected with the UCB.
Short-circuit terminal
If these two pins are connected the
speaker should have sound output.
Refer to the
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