support.dell.com Getting Help 5-52. Include a copy of the invoice and a letter describing the reason for the return.3. Include a copy of the Diagnostics Checklist indicating the tests you have run andany error messages reported by the Dell Diagnostics.4. Include any accessories that belong with the item(s) being returned (powercables, software diskettes, guides, and so on) if the return is for credit.5. Pack the equipment to be returned in the original (or equivalent) packingmaterials.You are responsible for paying shipping expenses. You are also responsible forinsuring any product returned, and you assume the risk of loss during shipmentto Dell Computer Corporation. Collect-on-delivery (C.O.D.) packages are notaccepted.Returns that are missing any of the preceding requirements will be refused at ourreceiving dock and returned to you.Before You CallNOTE: Have your Express Service Code ready when you call. The code helps Dell’sautomated-support telephone system direct your call more efficiently.Remember to fill out the Diagnostics Checklist (Figure 5-1). If possible, turn on yoursystem before you call Dell for technical assistance and call from a telephone at ornear the computer. You may be asked to type some commands at the keyboard, relaydetailed information during operations, or try other troubleshooting steps possibleonly at the computer system itself. Make sure that the system documentation isavailable.CAUTION: To help prevent the risk of electrical shock, disconnect all exter-nal devices, remove the battery, and disconnect the AC adapter from thecomputer before installing or replacing the hard-disk drive and memorymodules.