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Motorola ASTRO Digital XTL 5000 Detailed Service Manual

Motorola ASTRO Digital XTL 5000
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6881096C74-B May 25, 2005
Troubleshooting Procedures: 700–800 MHz Main Board Troubleshooting 4-25
Figure 4-10. Frequency Generation Unit DC Power Supply Distribution (700–800 MHz)
MAEPF-27803-O
13.8 VDC
from Battery or
Power Supply
Q0503
Switched A+
Switched A+
(SW_A+)
9.3V
Regulated
5.0V
Regulated
8.2V
Regulated
K9.1
3.0V
Regulated
U0950
9.3V Regulator
U0505
5.0V Regulator
U6750
3.0V Regulator
Y6750 16.8
MHz Reference
Oscillator and
U6752 Buffer
Q6759
8.2V Superfilter
U6754 TX VCOs
and
U6755 RX VCOs
U6751
LVFracN
Q6763 2nd
Stage of RX
Injection
Q6762 1st
Stage of RX
Injection
U0951
9.1V TX
Regulator
Q6764 and
Q6765 TX
Injection
Q0952
K9.1 Switch
Q6766 3rd
Ste of TX
Injection
Charge Pump
Bias Q6757 and
Q6758, Prescaler
Amp Q6761

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Motorola ASTRO Digital XTL 5000 Specifications

General IconGeneral
BrandMotorola
ModelASTRO Digital XTL 5000
CategoryRadio
LanguageEnglish

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