Self Test & Troubleshooting
7-1
7. Self Test & Troubleshooting
7.1 General
This section describes the self-test steps and suggested troubleshooting procedures when
AC source does not function normally. If the problem cannot be solved using the
information given here, consult the distributor whom you purchased the unit.
7.2 Self Test
When the AC source power-on, it performs a series of self-test. Firstly, it does the memory,
data and communication self-test. They contain three items: DISPLAY, WAVEFORM, and
REMOTE. If any failure is detected on a certain item, an "error code" will be shown at the
right side of that item. The following table shows all the error messages:
Error Code Description Remark
Bit 0 SRAM error 0 – OK, 1 - ERROR
Bit 1 CODE error 0 – OK, 1 – ERROR
Bit 2 DATA error 0 – OK, 1 – ERROR
Bit 3 Communication error 0 – OK, 1 - ERROR
Bit 4 Output test result 0 – OK, 1 – ERROR
Bit 5 Reserved
Bit 6 Reserved
Bit 7 Reserved
Example: If error code shows " ERROR = 05 ", the error code in binary is " 00000101".
The bit 0 and bit 2 are " 1 ". So " ERROR = 05 " means SRAM error and
DATA error occurs.
Error Message Description Action
SRAM error SRAM test fail. Consult your dealer for assistance.
CODE error Program code test fail. Consult your dealer for assistance.
DATA error Data in Flash or EEPROM test fail. Consult your dealer for assistance.
Communication
error
Can not communicate. 1. Power off the AC source, wait
three seconds, power on again.
2. Consult your dealer for
assistance.
After the memory, data and communication self-test, the AC source does the power output
self-test. In this procedure, the output relays are in OFF state to sure not harming the load
connecting on output terminal. Then, the AC source will check if there is any protection
signal sent from hardware. If it does, the display shows " Output self test <NG>". It means
the AC source is abnormal. Press
ENTER to see what protection condition is. If no
protection signal, the AC source will program 300Vac and measure the voltage. If the
measured voltage is over 300V ±5V, the power self-test is failed, and the display also shows
" Output self test <NG> ". Probably AC source has not been calibrated (updated the
software especially). Users can do following steps to reassure.
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