HP Elite Dragonfly 13.5 Maintenance and Service Guide - Page 114

Thunderbolt (TB), Use this information to troubleshoot Thunderbolt issues.

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Table 6-44 Issues, possible causes, and fixes (continued) Items Procedures 8. Test with verified working external speakers or headset. 9. Reseat internal speaker connections. 10. Test with verified working internal speakers. 11. Replace internal speakers. No sound from headphones 1. Adjust volume by pressing fn + f6 or f7. Be sure that volume button light is not amber (mute). Or adjust Windows volume control by clicking the speaker icon on the Windows taskbar. Be sure that the sound it not muted. 2. Check headphone cable connection. 3. Test with a verified working audio board. 4. Replace audio board and verify the change. No sound from external speakers 1. Verify that external speakers are turned on. 2. Disconnect headphones from headphone jack. 3. Adjust volume by pressing fn + f6 or f7. Be sure that volume button light is not amber (mute). - or - Adjust Windows volume control by clicking the speaker icon on the Windows taskbar. Be sure that the sound is not muted. 4. Check for possible interference devices nearby that might affect the audio (cell phone or portable communications handset.) Thunderbolt (TB) Use this information to troubleshoot Thunderbolt issues. Table 6-45 Issues, possible causes, and fixes Items Procedures Symptom Possible causes Thunderbolt device not working BIOS, drivers, and user settings. Troubleshooting steps 1. Update to the latest BIOS and choose appropriate TB Port settings. 2. Reset User Account Settings to default. 3. Update Intel Thunderbolt software that includes firmware version (for TB controller), driver version (operating system driver), and application version. Thunderbolt (TB) 105

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Table 6-44
Issues, possible causes, and fixes
(continued)
Items
Procedures
8.
Test with verified working external speakers or headset.
9.
Reseat internal speaker connections.
10.
Test with verified working internal speakers.
11.
Replace internal speakers.
No sound from headphones
1.
Adjust volume by pressing
fn + f6 or f7
. Be sure that volume button light is not amber
(mute). Or adjust Windows volume control by clicking the speaker icon on the Windows
taskbar. Be sure that the sound it not muted.
2.
Check headphone cable connection.
3.
Test with a verified working audio board.
4.
Replace audio board and verify the change.
No sound from external speakers
1.
Verify that external speakers are turned on.
2.
Disconnect headphones from headphone jack.
3.
Adjust volume by pressing
fn + f6 or f7
. Be sure that volume button light is not amber
(mute).
- or -
Adjust Windows volume control by clicking the speaker icon on the Windows taskbar.
Be sure that the sound is not muted.
4.
Check for possible interference devices nearby that might affect the audio (cell phone
or portable communications handset.)
Thunderbolt (TB)
Use this information to troubleshoot Thunderbolt issues.
Table 6-45
Issues, possible causes, and fixes
Items
Procedures
Symptom
Thunderbolt device not working
Possible causes
BIOS, drivers, and user settings.
Troubleshooting steps
1.
Update to the latest BIOS and choose appropriate TB Port settings.
2.
Reset
User Account Settings
to default.
3.
Update Intel Thunderbolt software that includes firmware version (for TB controller), driver
version (operating system driver), and application version.
Thunderbolt (TB)
105