Part 5 Of 5; Table 5-7. Rfpa Dc Voltages - Motorola ASTRO XTL 1500 Detailed Service Manual

Troubleshooting Charts: Flowcharts
5.6.48 RF Power Amplifier (RFPA)—No or Low TX Power Output (700–800 MHz)—

Part 5 of 5

6815854H01-A

Table 5-7. RFPA DC Voltages

Description
A+ = 13.6 Vdc
U5501, VD1
U5501, RFOUT
Q6520 Gate Bias
Q6520 Drain Bias
Q6540 Gate Bias
Q6541 Gate Bias
Q6540/Q6541
Drain Bias
Antenna Switch Bias
Voltage 1
Antenna Switch Bias
Voltage 2
Antenna Switch Bias
Voltage 3
Location Voltage (Vdc)
VN_B6503 9.0–9.3
VN_B6504 9.0–9.3
VN_B6520 2.0–2.2
L6521/R6526 13.0–13.6
Node
VN_B6540 3.5–3.7
VN_B6541 3.5–3.7
L6542/R6544 13.0–13.6
Node
VN_B6563
VN_T6701
D6701/D6702
Node
~5.3
~1.6
~0.8
June 15, 2005
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