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9. TROUBLE SHOOTING
9-1. Hardware
No power at all
Possible cause Recommend action
Main battery discharged Recharge the battery
Internal data corruption (F-ROM/RAM) Perform full reset
Wrong position of battery cover switch Set proper position
AC adaptor fault Replace AC adapotor
No main battery is set with AC adaptor Set main battery during any operation
Terminals of main battery are dirty Clean the terminals
Open circuit of internal PCB Replace main PCB assy
Intermittently no power
Possible cause Recommend action
Low main battery Recharge the battery
Poor contact adaptor jack Change the jack
Poor contact of battery cover switch Change the switch
Terminals of main battery are dirty Clean the terminals
Poor contact of internal connector Check and reconnect
Lock up during operation
Possible cause Recommend action
Data is full in memory Perform reset or full reset operation
Data corruption in RAM Perform reset or full reset operation
Performed improper application software Delete the improper application software
Faulty internal PCB Replace main PCB assy
Lock at initial display
Possible cause Recommend action
Poor contact of RAM PCB connector Reconnect RAM PCB connector
Faulty main or RAM PCB Replace the main or RAM PCB
Poor playback sound
Possible cause Recommend action
Recorded high pressure sound Leave the microphone from speaker or voice
Low sampling frequency when recording Chose hjgh sampling frequency
Faulty speaker Replace the speaker
Lock up at initial display
Possible cause Recommend action
Poor contact of RAM PCB or connector Resolder RAM PCB or check the contact
Faulty internal PCB Replace RAM PCB or main PCB
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