XIEGU
Product Maintenance Manual G90/G90S Portable Short-Wave Transceiver
XIEGU All Rights Reserved Version No.: 1.0 2022-07 Page
8
of
48
Fault
Phenomenon
Maintenance Method
Display
Checkpoint
Blank display
Check whether the FPC
pedestal is faultily welded
A
Check whether there is any false
welding at the MCU pins
B
This fault is mostly caused by the false welding of components.
During repair welding of the FPC pedestal, it is necessary to
shorten the welding time as much as possible to avoid thermal
deformation of the pedestal.
