Motorola Astro XTL 1500 User Manual

June 15, 2005 6815854H01-A
5-42 Troubleshooting Charts: Flowcharts
5.6.31 RFPA Power Control—No VGBIAS (380–470 MHz and 450–520 MHz)
Figure 5-31. RFPA Power Control—No VGBIAS (380–470 MHz and 450–520 MHz)
Read General
Notes before
proceeding. Read
specific notes as
indicated
START
No
Yes
Repair/replace
U0960
No
No/low
Q5503 pin 7
VGBIAS1?
No/low
Q5503 pin 6
VGBIAS2?
Remove U0960.
TP0937 voltage
2.6-2.8 V?
Yes
Remove U0960.
TP0939 voltage
2.6-2.8 V?
Yes
Remove U0960.
TP0941 voltage
2.0-2.2 V?
No
Repair/replace
U0959. If problem
still not fixed, see
IC communication
in CONTROLLER
section.
Yes
Yes
No
No

Motorola Astro XTL 1500 Specifications

General

Brand	Motorola
Model	Astro XTL 1500
Category	Radio
Language	English