2 Troubleshooting Procedures
Satellite L550 / Satellite L555 / Satellite L557 / Satellite Pro L550
25
To determine if the computer’s built-in speakers are functioning properly, perform the
following procedures. Figure 2-10 outlines the process. First adjust the speaker volume to an
appropriate level. Start with Procedure 1 and continue as instructed.
Procedure 1: Audio source test
Procedure 2: Earphone test
Procedure 3: Connection check
Procedure 4: Replacement check
Procedure 1
Audio source test
Try different audio sources (e.g. an audio CD and digital music file) to determine whether the
fault is in the speaker system or not. If not all sources have sound problem, the problem is in
the monaural devices. If all have the same problem, continue with Procedure 2.
Procedure 2
Earphone test
Connect a set if earphones or external speakers. If these function correctly, go to Procedure 3.
If they do not function correctly, the system board may be defective or damaged. Replace it
with a new one.
Procedure 3
Connection check
Disassemble the computer following the steps described in Chapter 4,
Replacement
Procedures
and make sure the speaker cable is firmly connected to the audio board. If the
speakers are still not functioning properly, go to Procedure 4.
Procedure 4
Replacement check
If the stereo speakers don't sound properly, the stereo speakers may be defective or damaged.
Replace them with new ones. If the stereo speakers still do not work properly, try replacing in
turn the audio board and system board.
Summary of Contents for Satellite L550 series
Page 1: ...Toshiba Personal Computer Satellite Maintenance Manual TOSHIBA CORPORATION ...
Page 13: ...Chapter 1 Hardware Overview ...
Page 16: ......
Page 32: ...Chapter 2 Troubleshooting Procedures 2 ...
Page 33: ......
Page 100: ...3 Tests and Diagnostics Satellite L550 ProL550 Series Maintenance Manual Series T D 13 ...
Page 122: ...Chapter 4 Replacement Procedures ...
Page 223: ...SatelliteL550 ProL550 Series Maintenance Manual E 2 3 Thai TI Keyboard 4 Korean KO Keyboard ...
Page 225: ...SatelliteL550 ProL550 Series Maintenance Manual E 4 7 Hebrew HB Keyboard ...
Page 226: ...SatelliteL550 ProL550 Series Maintenance Manual E 5 8 Danish DM Keyboard 9 Swiss SW Keyboard ...
Page 237: ...SatelliteL550 ProL550 Series Maintenance Manual E 16 30 Japanese JP Keyboard ...