How to check C-SUM

Turn off radio then turn on while pressing [NR] + [MIC] keys.

Sound like some switches then you will see main CPU C-SUM in main frequency area and DSP C-SUM in sub frequency area.Main CPU C-SUM is 4 digits (ie 2EA9). DSP C-SUM is 8 digits (ie 116543df).

Use MULTI CH to chenge display.

PANEL DISPLAY

AT

Diaplay C-SUM

MAKE

All LCD segments display

RELEASE

 

 

Turn off radio then turn on while pressing [F4] + [F5] keys.

Sound like some switches then you will see main CPU C-SUM in main frequency area and DSP C-SUM in sub frequency area.Main CPU C-SUM is 4 digits (ie 2EA9). DSP C-SUM is 8 digits (ie 116543df).

Use MULTI CH to chenge display.

PANEL DISPLAY

AT

Diaplay C-SUM

MAKE

All LCD segments display

RELEASE