Nokia 638 - Manual (Page 51)

Troubleshooting
If the power does not come on or stay on:
• Make sure the battery is properly installed and
charged.
•
Be sure that the contacts on the battery and the
charging stand are clean.
•
Battery charge may be too low for operation.
Check the display and listen for the low battery
warning tones.
If the power comes on, but the phone does not work:
•
Check the NO SVC indicator, you might be out of
the cellular service area.
• Make sure that the antenna is properly installed
and if your phone has an extendable antenna,
make sure that the antenna is extended to its full
length.
•
Check if there is an error message on the display
after switching on. If so, contact your local dealer.
Technical Information
Weight : 6.93 oz. (196 g) with 470 mAh
Slim NiMH battery, or
8.41 oz. (238 g) with Extended
950 mAh NiCd battery
Transmitting Power: 0.6 W (+ 2 db - 4 dB)
Operating Voltage: 4.8 V (internal battery),
110 V (AC), 12 V (car)
Frequency Band: 824.040-848.970 MHz (Tx)
869.040-893.970 MHz (Rx)
Number of Channels: 832
Memory Locations: 0-40
Memory Capacity: Locations 1-20 16 digits
16 letters
Locations 21-40 32 digits
16 letters
NHA-4NG Nokia 638_AU
Authentication version
US English 9351137
Issue 3
Version: 0.7, Date: 11 (2) Dec.
1996
Status: ToL, JaK, JaG, SIR, JoF
50