Hytera PNC550 - Diversity Circuit

Troubleshooting Flowchart
B9
24
6.1.3 Diversity Circuit
Rep la ce the coa xial cab le
, or
re-bu ckl e o r re -sol d er th e RF
con ne ctor .
Are the
pe r ip he ra l com pone nts
of th e d ive rsit y test con nector
normal? [5]
Re-sold er or r eplace the te st
con ne ctor .
Rep la ce the dive rsity a nt enna.
No
Yes
Yes
Yes
Yes
No
No
No
Is t he diver si ty a nte nn a
on th e ch assi s n ormal? [1]
Is the RF coaxial cable normal? [2]
Is t he diver si ty a nte nn a t est
con ne ctor J 1301 normal? [4]
Re-sold er or r eplace the
comp onent s.
Are the
main-bo ard test item s n or ma l?
[6]
Rep la ce the main b oa rd.
No
St art
End
Che ck an d ch ange th e t est
meth ods, to ols, an d envi r on ment .
Yes
Re-sold er or r eplace the sp ring
pla te.
No
Is the diversity spring
pla te on the earpiece board
normal? [3]
Yes
Description of normal situations:
[1] The diversity antenna is not damaged.
[2] The RF connector is connected and soldered properly. The coaxial cable has no indentation or damage.
[3] The spring plate has no breakage, and is flexible and soldered properly.
[4] The test connector is soldered properly. When the cable is not buckled, the multimeter can be used for
measurement. Both ends are connected.