Lenovo 2005. Portions © Ibm Corp; Appendix A. Troubleshooting - Lenovo 90W AC/DC Combo Adapter User Manual

Appendix A. Troubleshooting

Before contacting Service and Support, please use the following steps to verify if
your adapter is defective:
1. Verify if your ThinkPad is supported for use with this adapter. For more
2. Inspect your adapter.
3. Insure all of the connectors are firmly seated at the power receptacle, the input
4. Insure the adapter has adequate ventilation. The adapter may overheat and
5. Check the Power Source.
6. Disconnect the ThinkPad and connect only the adapter to the power source. If
7. Connect the adapter to your ThinkPad.
© Lenovo 2005. Portions © IBM Corp. 2005.
information on supported models, go to www.lenovo.com/think/support and
search for 90W AC/DC Combo Adapter.
a. Inspect case for any damage (cracks, deformations, exposure to water, etc.).
b. Inspect cables for any damage (cracks, cut or exposed wiring, etc.).
c. If any damage is found, discontinue use of the adapter and contact Service
and Support for replacement parts.
side of adapter, and the ThinkPad.
Note: To remove the automobile connector or in-flight connector from the
adapter, grasp the connector sleeve and slide it backwards to unlock the
connector. Continue to pull the connector sleeve to remove the connector. To
prevent damage, do not pull on the cord to remove the connector.
shutdown if it is operated too long in a confined area.
a. AC Mode: Check the power receptacle by connecting a known working
device (for example, a lamp). If the AC receptacle is not working, check
your circuit breaker or fuse panel.
b. Automobile Mode: Check the power receptacle by connecting a known
working device (for example, a mobile phone charger). If the power
receptacle is not working insure that the key is in the Accessory position
and check the fuse panel.
c. Aircraft Mode: Check if the LED indicator next to the power receptacle is
illuminated. If the LED is not illuminated, contact a flight attendant.
the adapter's DC output LED indicator is illuminated, return to step 5.
a. AC Mode: If the DC output LED indicator is not illuminated, try swapping
the AC power cord from your original AC adapter (delivered with the
ThinkPad). If the original AC power cord shipped with your ThinkPad
works with the AC/DC Combo adapter, contact Service and Support for a
replacement AC power cord. If the original AC adapter power cord does
not work with your adapter, contact Service and Support for a replacement
adapter.
b. Automobile/Airplane Mode: If the DC output LED indictor is not
illuminated, try connecting the adapter to an AC power source. If the
adapter does not work in AC mode, contact Service and Support for a
replacement adapter. If the adapter works in AC mode, contact Service and
Support for a replacement In Flight Power Cable/Automobile Power
Receptacle Adapter.
a. If the adapter immediately shuts off, check your ThinkPad's power
connector for looseness or damage. Try connecting the original AC adapter
5