SECTION 3
LEVEL 1 TROUBLESHOOTING CHART
Insert
SIM card
Switch on
Does the | No | Insert new |
| Does the | No | ||||
telephone |
| telephone | |||||||
| battery |
|
| ||||||
switch on? |
|
| switch on? |
| |||||
|
|
|
| ||||||
|
| Yes |
|
|
| Yes |
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| ||||
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Does the telephone log on?
Yes
Is a call possible?
Yes
Is an
incoming call
possible?
Yes
Is the
audio quality
acceptable while
a call is in progress?
Yes
Level 1
repair
Does
No the original 
SIM card work
on another
set?
Yes
No
No
No | Level 2/3 |
| repair |
No SIM probably defective
Local level 1 operation
8