Service manual

68P80401P01-O 4-1
CHAPTER 4
PREPARING FOR BASIC LEVEL TESTING
4.1 Test Equipment
The following equipment is useful when testing an i870 unit: a reference unit, a reference SIM card,
and reference accessories. For a list of recommended test and programming equipment used to
troubleshoot this unit, see Appendix A: Ordering Replacement Parts and Kits.
4.1.1 Reference Unit
Use a reference unit (i870 unit known to be in good working order) to verify the accuracy of some tests.
You may want to set the Auto Answer Settings Menu setting so that the reference unit automatically
answers incoming calls for testing purposes.
4.1.2 Reference Accessories
Use reference accessories (accessories known to be in good working order) to verify the accuracy of
some tests.