Page 13
- MOTOROLA CONFIDENTIAL PROPRIETARY -
GSM Krunch - Level 3 Procedure vers.1.1
03/05/1999
Main VCO repair
START
Is
superfilter
voltage
2.55V ok at
U201 pin
21
Check
C211,C212,Vref=2.75V,Q202,Q203,R475=4.75V
at U201 pin 11,44 and NOTE 1
Is charge
pump
voltage
2.38V at
U201 pin
23
1)Check the CP_OUT voltage range at GIFSYN pin 23.
CH001= about 2.19V
CH062= about 2.64V
CH124= about 3.08V
2) If the voltage is alawys low check C208,C237 and
after resolder the Main VCO.
3) If the voltage is always high(CH1,062,124) try to
resolder the Main VCO if the problem still the same
could be the coil layer.
Is prsc_in
voltage
1.4V at
U201 pin
26
Check U201 and NOTE 1
Resolder Main VCO
no
yes
yes
no
yes
no
Summary of Contents for StarTAC130
Page 1: ...StarTAC130 GSM The World s Leading Cellular Telephone Manufacturer Service Manual ...
Page 2: ...GSM StarTAC130 PERSONAL CELLULAR TELEPHONE Service Manual Ver 1 0 ...
Page 9: ...Service Manual 2 2 3 99 StarTAC130 CELLULAR TELEPHONE PAGE INTENTIONALLY BLANK ...
Page 11: ...Service Manual 4 2 3 99 StarTAC130 CELLULAR TELEPHONE PAGE INTENTIONALLY BLANK ...
Page 13: ...Service Manual 6 2 3 99 StarTAC130 CELLULAR TELEPHONE PAGE INTENTIONALLY BLANK ...
Page 25: ...Service Manual 18 2 3 99 StarTAC130 CELLULAR TELEPHONE 2 1 3 4 5 6 7 8 9 10 11 ...
Page 27: ...Service Manual 20 2 3 99 StarTAC130 CELLULAR TELEPHONE PAGE INTENTIONALLY BLANK ...
Page 60: ...Page 31 MOTOROLA CONFIDENTIAL PROPRIETARY GSM Krunch Level 3 Procedure vers 1 1 03 05 1999 ...
Page 69: ...Page 40 MOTOROLA CONFIDENTIAL PROPRIETARY GSM Krunch Level 3 Procedure vers 1 1 03 05 1999 ...
Page 70: ...Page 41 MOTOROLA CONFIDENTIAL PROPRIETARY GSM Krunch Level 3 Procedure vers 1 1 03 05 1999 ...
Page 71: ...Page 42 MOTOROLA CONFIDENTIAL PROPRIETARY GSM Krunch Level 3 Procedure vers 1 1 03 05 1999 ...
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