Table 7-42 Issues, possible causes, and xes (continued)
Items Procedures
Card Reader Removal Policy Troubleshooting steps
1. Verify card reader removal policy.
2. Make sure there is no physical damage to the card.
3. Inspect the ends of the memory cards for dirt or material closing a hole or spoiling
a metal contact. Clean the contacts with a lint-free cloth and small amounts of
isopropyl alcohol. Replace the memory card if necessary.
4. Reinstall and update the drivers for the card reader.
5. Make sure the smart card reader is compliant with ISO 7816 Class A, B, and C.
6. Reinsert the card reader with correct face as described in its documentation.
7. Check reader function with a veried working card.
IMPORTANT: If the card reader has an in-use indicator light, do not insert or remove
memory cards while the light is ashing. Doing so might cause loss of data on the card or
might permanently damage the card reader.
Speaker, headphone - audio issues
Use this information to troubleshoot audio issues.
Table
7-43 Issues, possible causes, and xes
Items Procedures
Symptoms
● No sound from external or internal
speakers
● Distorted sound, too soft, too
loud, intermittent
Possible causes
Volume turned down, sound card not recognized, malfunctioning hardware, electronic
interference.
156 Chapter 7 Troubleshooting guide ENWW
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