Hytera PT580 - Main Board Disassembly

Service Manual
No Audio during Talk
Check whether the
receiver is normal. [1]
Refer to the section “No
Audio from Speaker”.
Check whether the main
board is normal. [2]
Refer to the
section “RF
POPWER
Circuit”.
Check whether U7211
works normally. [4]
Replace U7211.
Check whether U7209
works normally. [5]
Check U7209.
Check whether U7210
works normally. [6]
Check U7210.
Check whether the MIC
works normally. [7]
Replace the MIC.
No audio from
the receiver
during talk
Check U7209 or
the 70-pin
connector
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Check whether the I/Q
signal is normal. [3]
Yes
Yes
No
No
Check whether
Pin58/Pin60 of U2101
outputs audio signal.
Check U2101.
Check the 70-pin
connector on the
main board and
related parts.
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