
©Microcontroller café & Checkpoint LAB MC68HC705E6 EEPROM PROGRAMMER User’s Guide
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◆ Error message:
Error Comm: Check Port Number/Cable/Turn ON Power Supply
◆ Cause:
DC cable is broken, wrong power supply is used, no power, wrong cable
◆ Solution:
Check or connect the serial cable to the PC COM port cable and connect
the DC power cable to the DC jack or check that the power supply source
is DC type 12-15 V, min. 300 mA
Figure 11
◆ Error message:
Error Comm: Port Number Invalid
◆ Cause:
Serial port does not exist on your PC
◆ Solution:
Select correct serial port number
Figure 12
◆ Error beep signal ( 3 times ):
Write failed; Read failed; Boot failed
◆ Cause:
Wrong MCU selection, wrong target MCU orientation, unexcepted error
◆ Solution:
Check MCU type selection, target MCU orientation. Otherwise, repeat operation
again ( Write, Read or Boot )
Figure 13
5. Troubleshooting guide
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