Chroma 61605 - 5 Theory of Operation; General; Description of Overall System

Self-test & Troubleshooting
6-1
6. Self-test & Troubleshooting
6.1 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.
6.2 Self-test
When users power-on the AC source, 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.