Figure 4-9. Pa Test Adapter, 40 Watt Power Amplifier; Table 4-19. Dc Voltages And Input Power Chart - Motorola ASTRO Digital Spectra Service Manual

4-58
8. If no failure is located from the previous checks, troubleshoot the power control circuitry.
Test
Transmit
Receive
a. Set initially to zero. Increase value until power equals 46 Wafts or 10.0 V maximum.
Do NOT exceed 10.0 V.
A+ TO COMMAND
BOARD
CURRENT SENSE +
CONTROL VOLTAGE LIMIT
CONTROL VOLTAGE DRIVE
July 1, 2002

Table 4-19. DC Voltages and Input Power Chart

Keyed 9.4 V
9.4
0
2
4
1
3
K9.4

Figure 4-9. PA Test Adapter, 40 Watt Power Amplifier

Troubleshooting Procedures: Power Amplifier Procedures
CONTROL
9.6 V VOLTAGE
DRIVE
9.6 See note
9.6 0
8
6
10 12
5 11
9
7
POWER IN
A+ .V
(mW)
a
30
0
A+ TO COMMAND BOARD
CURRENT SENSE -
FEMALE RECEPTACLE
CONNECTOR W 100 MIL
SPACING MATES TO P853
REGULATED 9.6V
V DETECT
TEMP SENSE
68P81076C25-C
13.0
13.0