Apple MC408LL Apple Technician Guide - Page 68

Audio: Built-in Speaker Has No Audio, Deep Dive, Quick Check

Get Apple MC408LL - Mac Mini Snow Leopard Server PDF manuals and user guides
UPC - 885909370924
View all Apple MC408LL manuals
Add to My Manuals
Save this manual to your list of manuals

Page 68 highlights

2010-08-03 Deep Dive Check 1. Launch System Preferences and select Sound/Output options. Set speaker balance to the middle, then play a sound file. Verify that sound is generated by the speaker and that the sound quality is acceptable. Result Yes No Action Speaker and amplifier circuitry OK. Go to step 3. Distortion detected in speaker. Go to step 2 2. Connect external speakers or headphones to Headphone Out port then play a sound file. Verify that sound quality is acceptable. 3. Visually inspect speaker cone and speaker connection cable for damage. Does the speaker have visible damage? 4. Install known-good speaker. Verify that sound quality improves. Yes Suspect bad speaker. Go to step 3. No Audio CODEC or amplifier issue suspected. Replace logic board. Retest. Yes Replace damaged speaker. Retest. No Go to step 4. Yes Speaker bad. Replace speaker and retest. No Suspect speaker amplifier. Replace logic board. Code M09 X09 M09 M09 Audio: Built-in Speaker Has No Audio Quick Check Symptoms Audio: Built-in Speakers Have No Audio • No audio from speaker. • Audio from speaker distorted Quick Check 1. Launch System Preferences and select Sound/ Output options. Verify that the sound output option is set to system's internal speaker. 2. Launch System Preferences and select Sound/ Output options. Verify that the 'Output Volume' setting is set above the minimum level and that the 'mute' option is not selected. 3. Launch System Preferences and select Sound/ Output options. . Verify that 'Balance' is set to middle position 4. Reset PRAM. 5. Go to Deep Dive. Mac mini (Mid 2010) Symptom Charts - Input/Output Devices 68

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
Mac mini (Mid 2010) Symptom Charts — Input/Output Devices
68
2010-08-03
Deep Dive
Check
Result
Action
Code
1.
Launch System Preferences and
select Sound/Output options.
Set speaker balance to the
middle, then play a sound file.
Verify that sound is generated
by the speaker and that the
sound quality is acceptable.
Yes
Speaker and amplifier
circuitry OK. Go to step 3.
No
Distortion detected in
speaker. Go to step 2
2.
Connect external speakers or
headphones to Headphone
Out port then play a sound
file. Verify that sound quality is
acceptable.
Yes
Suspect bad speaker. Go to
step 3.
No
Audio CODEC or amplifier
issue suspected. Replace logic
board. Retest.
M09
3.
Visually inspect speaker cone
and speaker connection cable
for damage. Does the speaker
have visible damage?
Yes
Replace damaged speaker.
Retest.
X09
No
Go to step 4.
4.
Install known-good speaker.
Verify that sound quality
improves.
Yes
Speaker bad. Replace speaker
and retest.
M09
No
Suspect speaker amplifier.
Replace logic board.
M09
Audio: Built-in Speaker Has No Audio
Quick Check
Symptoms
Quick Check
Audio: Built-in Speakers Have No
Audio
•
No audio from speaker.
•
Audio from speaker distorted
1.
Launch System Preferences and select Sound/
Output options. Verify that the sound output
option is set to system’s internal speaker.
2.
Launch System Preferences and select Sound/
Output options. Verify that the ‘Output Volume’
setting is set above the minimum level and that
the ‘mute’ option is not selected.
3.
Launch System Preferences and select Sound/
Output options. . Verify that ‘Balance’ is set to
middle position
4.
Reset PRAM.
5.
Go to Deep Dive.