Apple A1267 Specifications download pdf (Page 34)

LED Cinema Display (24-inch) Symptom Charts — Input/Output Issues 34

2010-02-08

Launch System Preferences: 3.

Sound and select ‘sound

output’ options. Verify output

option is set to display’s

internal speakers.

Yes Go to step 6.

Set output to internal

speakers. Retest. If needed,

replace logic board.

L11

Disconnect USB uplink cable 4.

from logic board and system.

Inspect cable connectors and

cable under magnication for

pinched cables and damaged

or bent pins.

Yes

Replace all-in-one cable. L14

No Go to step 5.

Disconnect USB uplink cable 5.

from logic board. Inspect logic

board USB connector under

magnication for damaged or

bent pins.

Yes

Replace logic board.

Retest.

M15

No Go to step 6.

Launch System Preferences 6.

and select Sound Eects

options. Verify that sounds play

normally from left and right

speakers.

Yes Speakers and amplier circuit

are OK.

No Reseat left, right, and

subwoofer speaker

connections on logic board

while inspecting cables

for damage. Retest. If not

resolved, go to step 7.

Launch System Preferences 7.

and select Sound output

options. Verify sound quality

normal when balance control

set to ‘left only’ and ‘right only’

speakers.

Yes Speakers and amplier circuit

are OK.

Based on results of test,

replace left or right speaker

or replace subwoofer. Retest.

If not resolved, go to step 8.

L11

Launch System Preferences 8.

and select Sound output

options. Verify sound quality

normal when balance control

set to ‘left only’ and ‘right only’

speakers.

Yes Speakers and amplier circuit

are OK.

Replace logic board. L11

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Apple A1267 Specifications Page 34

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