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Model:
MD-A1b(P3000)
Subject:
How to determine the cause when repairing
From:
2nd Tech Service Sect., MFP/P Tech Service Dept.
Classification:
This is how to determine the cause when repairing.
No.1
Symptom
Microphone does not work
Cause
1. Microphone is defective
2. Audio board is defective
3. Main board is defective
No.2
Symptom
Video is not displayed
Cause
Camera assembly is
defective
No.3
Symptom
No sound
Cause
1. Audio board is defective
2. Speaker is defective
T
echnical
Troubleshooting
Mechanical
Paper path
Product Safety
Action
1. It is possible that the customer has inadvertently
activated the microphone mute feature. Try
performing a conference at the repair depot and
check whether the microphone is actually picking
up sound.
2. If the symptom is duplicated, it is possible that the
microphone mute LED is broken. Confirm whether
this LED lights when the main power is turned ON
(since all LEDs should light at this time).
3. If the microphone mute LED does light, check to
see it the microphone hole is covered by the
rubber lining that is normally attached around it.
4. If the microphone hole is not covered, replace the
microphone.
5. If the symptom still occurs after replacing the
microphone, replace the audio board.
6. If the symptom still occurs, the machine cannot be
repaired.
Action
1. Replace the camera assembly, connect the
device to the network, and then turn the device
main power ON.
2. In the Contacts screen, check whether video can
be displayed.
3. If the symptom still occurs, the machine cannot be
repaired.
Action
1. Replace the audio board.
2. If the symptom still occurs, replace the speaker.
B
ulletin
Date:
31-May-12
Prepared by:
Part information
Electrical
Transmit/receive
Other (
)
PAGE: 1/2
No.:
RE0A0004
S. Ishizu
Action required
Service manual revision
Retrofit information
Tier 2
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