Apple MC408LL Apple Technician Guide - Page 70

Audio: No Audio through HDMI or Mini DisplayPort connection., Symptoms, Quick Check

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Audio: No Audio through HDMI or Mini DisplayPort connection. Quick Check Symptoms Audio: No audio through HDMI or DisplayPort connection. • No audio from external display speaker. Quick Check 1. Reset PRAM. 2. Connect a known-good HDMI/Mini DiplayPort display and cables, Power on the display first then power on the Mac mini. Launch System Preferences and select Sound/Output options. Verify that the HDMI /DisplayPort audio sound output option is available and selected. 3. Check that issue happens with every media type (some copy protected media may not be playable). 4. Check that customer is not using an additional HDMI to DVI adapter or Mini DisplayPort to HDMI adapter (some adapters may not carry the audio signals) 5. Check that customer verified his display volume level was above zero and not muted. 6. (HDMI) Check that customer verified that his HDMI display model audio compatibility ( early HDMI displays do not support audio, or only some audio modes) 7. Go to Deep Dive. Deep Dive Check 1. Using known-good HDMI or Mini DisplayPort display and cables, select external display audio output in System Preferences Sound Output , and verify that you can set System Alert Sounds to same audio port. Note: make sure that audio output preferences are not set to Mute. Result Yes No Action Go to step 3 Go to step 2. Code 2010-08-03 Mac mini (Mid 2010) Symptom Charts - Input/Output Devices 70

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Mac mini (Mid 2010) Symptom Charts — Input/Output Devices
70
2010-08-03
Audio: No Audio through HDMI or Mini DisplayPort connection.
Quick Check
Symptoms
Quick Check
Audio: No audio through HDMI
or DisplayPort connection.
•
No audio from external display
speaker.
1.
Reset PRAM.
2.
Connect a known-good HDMI/Mini DiplayPort
display and cables, Power on the display first
then power on the Mac mini. Launch System
Preferences and select Sound/Output options.
Verify that the HDMI /DisplayPort audio sound
output option is available and selected.
3.
Check that issue happens with every media
type (some copy protected media may not be
playable).
4.
Check that customer is not using an additional
HDMI to DVI adapter or Mini DisplayPort to HDMI
adapter (some adapters may not carry the audio
signals)
5.
Check that customer verified his display volume
level was above zero and not muted.
6.
(HDMI) Check that customer verified that his
HDMI display model audio compatibility ( early
HDMI displays do not support audio, or only
some audio modes)
7.
Go to Deep Dive.
Deep Dive
Check
Result
Action
Code
1.
Using known-good HDMI
or Mini DisplayPort display
and cables, select external
display audio output in System
Preferences Sound Output , and
verify that you can set System
Alert Sounds to same audio
port. Note: make sure that
audio output preferences are
not set to Mute.
Yes
Go to step 3
No
Go to step 2.