Hytera PT580 - Baseband Section; Power Section; Diagram of Power Section

Service Manual
Cartesian IC, TX VCO, RX VCO, pre-amplifier and other RX parts respectively. The V_PA is supplied by
the battery directly. The SYN control signal is open while the portable terminal is operating.
2. Baseband Section
2.1 Power Section
BATTERY
Farad Battery
Z
Z
ON/OFF
V_PA
VBAT
1V8D
1V6D
2V5D
3V_TXCO
3V3D
3.3V_RF
LDO
1V2D
TO RF PART
TO RF PART
PMU
U6001
Figure 7 Diagram of Power Section
The 3V3D, 1V6D, 1V8D and 3V_TXCO are the necessary voltages for the MCU to start up. The MCU
may not start if any of the four voltages becomes invalid.
The 3V3D, 2V5D, 1V2D and 3V_TXCO are the necessary voltages for the FPGA to start up. The FPGA
may not start if any of the four voltages becomes invalid.
No. Network Test Point
Reference Voltage during Start-up (V)
(while running Bootloader)
Reference Voltage
after Start-up (V)
1 VBAT L6004_2
3.6～4.2 3.6～4.2
2 3V3D TP6001 3.3 3.15
3 1V8D TP6002 1.8 1.8
4 1V6D TP6003 1.6 1.35
5 2V5D TP6004 2.5 2.5
6 3V_TXCO TP6005 3 3
7 1V2D TP6006 1.2 1.2
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