TC Electronic ATAC, Service Manual

Page: 10 / 55

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TC Electronic A/S ATAC Service manual page 10
LED error codes:
At each power up, the ATAC runs several tests.
If an error occurs 3 LED's at the main board will show an error code. Use the table below for decoding error codes.
LD1 LD2 LD3 Code explanation Action
off off off The CPU is running OK (all LED's blink once and LD3 is lit for a moment at reset, )
on off off The program encountered an Error while checking its own code Load the application software again.
off on off Errors detected while writing to and reading back from the static ram Check IC 9 & 11.
on on off Errors detected while writing to and reading back from the LCD display memory Check connector J1 and the LCD.
on off on The voltages U-PSIN, U-REMIN or U+5V were out of range Measure the voltages with a multimeter. See section Built-
in-Test Program for Voltage limits
off on on Errors were detected while erasing and programming Flash Check IC10
off off on Load menu is selected Load software from network or PCMCIA card