Section 5. Maintenance and Troubleshooting
52
PlexCombo 20/10/40-12A Installation and Users Manual
14. If you do not wish to perform the DVD-ROM test, reset the mode jumper at the
rear of the PlexCombo to its original setting as noted in Step 4 above. Also,
remove the spare jumper you installed.
15. Reconnect the IDE cable to the PlexCombo drive. If you removed the drive to
gain access to the cable or jumpers, replace the drive in the computer. Then
replace the computer cover.
DVD-ROM Test
This tests the drive’s DVD-ROM random access.
To perform the DVD-ROM random access test:
1. Turn the computer’s power OFF, unplug it from its power source, and open the
computer to gain access to the rear of the PlexCombo drive. Typically, this
involves loosening or removing several screws on the back panel of your
computer and sliding off the cover. (See Figure 3 for an example.)
CAUTION: Before you attempt to open your computer be sure to properly ground
yourself by wearing an anti-static wristband. This will help prevent static damage to
your computer system.
2. You should be able to see the back of the PlexCombo drive connected to the
ATAPI cable, power connector, and, optionally, an analog sound cable.
NOTE: You may have to remove the drive from the computer to perform the next two
steps.
3. Hold the ATAPI cable at or near the base of its connection to the PlexCombo.
Carefully remove the ATAPI cable from the PlexCombo by pulling the cable
gently rearward.
4. Note the position of the mode jumper at the rear of the PlexCombo. A jumper
will be installed on either the CABLE SELECT, SLAVE, or MASTER position.
Write down this jumper position. (You’ll need to replace the jumper after the
test.) Then:
If the jumper is on the MASTER position, move it to the SLAVE or CABLE
SELECT position for this test.
If the jumper is on the SLAVE or CABLE SELECT jumper, leave it in
place.
5. Install the spare jumper, located in the accessory kit, so that both the CABLE
SELECT and SLAVE positions are jumpered, as shown in Figure 21.
6. If you removed the drive was removed for access to the cable and mode jumpers,
slide it back into the computer and connect the power cable to the drive.