Compal ACY25 series Service Manual page 121

If the diagnostics program cannot detect an error, the problem may be intermittent. The test
program should be executed several times to isolate the problem. When a problem has
been located, perform the appropriate troubleshooting procedures as follows:
1. If an error is detected by the main battery test, perform the Power Supply
Troubleshooting procedures in Section 6-2.
2. If an error is detected by the display test, perform the Display Troubleshooting
procedures in Section 6-3.
3. If an error is detected by the floppy disk test, perform the FDD Troubleshooting
procedures in Section 6-4.
4. If an error is detected by the keyboard test, perform the Keyboard Troubleshooting
procedures in Section 6-5.
5. If an error is detected by the printer (parallel) port test, perform the Printer Port
Troubleshooting procedures in Section 6-8.
6. If an error is detected by the CD-ROM/DVD-ROM test, perform the DVD-ROM and
CD-RW/DVD-ROM Troubleshooting Procedures in Section 6-11.
7. If an error is detected by the Modem test, perform the Modem Troubleshooting
Procedures in Section 6-12 or the LAN Troubleshooting Procedures in Section 2.11.
8. If an error is detected by the Sound test, perform the Sound Troubleshooting Procedures
in Section 2.12.
Other problems that are not covered by the diagnostics program may be discovered by a user.
1. If an error is detected when using an external USB device, perform the External USB
Devices Troubleshooting procedures in Section 6-6.
2. If an error is detected when using the TV-out connection, perform the TV-Out Failure
Troubleshooting procedures in Section 6-7.
3. If an error is detected when using the touch pad, perform the Touch Pad Troubleshooting
procedures in Section 6-9.
4. If an error is detected when using the speakers, perform the Speaker Troubleshooting
procedures in Section 6-10.
5. If an error is detected when using the CD/DVD drive, perform the CD-ROM/DVD Drive
Troubleshooting procedures in Section 6-11.
6. If an error is detected when using the modem, perform the Modem Troubleshooting
procedures in Section 6-12.
7. If an error is detected when using the PCMCIA unit, perform the PCMCIA Troubleshooting
procedures in Section 6-13.
Chapter
6-4