Low Receiver Signal Strength Indicator; No Service - Nokia 6150 Service & Repair Hints

Low receiver signal strength indicator

Antenna faulty / wrong - Tuning
•
Check the code of the antenna label (see below)
•
Check the receiver signal indicator with a new antenna
•
Retune the handset
Figure 123: Antenna codes
NMP
CODE
0660178
0660160
0660145

No service

13MHz VCTCXO G650 out of range
•
Check the 13MHz reference frequency pin 15 N600 (SUMMA) or pin 2 from G650, set first the module in
service mode, a frequency error higher +-50Hz can create deviation of the IF frequencies
X560 Antenna connector mechanical faulty
•
Check the handset with the external antenna
•
Check the resistor "0Ohm" from the internal antenna pad to the "in" pin from X560
B100 32,768KHz crystal
•
Check the amplitude of the 32,768KHz square wave on pin 48 from CCONT
version 1.0 / 19.10.1999
CONFIDENTIAL
DESCRIPTION
ANTENNA FXD
890-960/1710-1880 MHz
ANTENNA FIXED HELIX
890-960 MHz
HELIX 1710-1880 MHz PCN
Service & Analysis Center Europe
TYPE CODE NOTE
(Stamped in
helix antenna)
DGPxxxxx NSM-1*
SGSxxxxx NSE-1/3*
SPNxxxxx NSK-1/3*
Training Team
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