54
K2 K3 | SERVICE MANUAL
INDEX
Connect the mains power and switch on the amplier, check the status of all the control LEDs, it should be as highlighted in the following
pictures:
CNTRL BOARD
AUX VOLTAGES
PSU V AUX
V RAIL
13. Internal LEDs check:
12. Error codes:
Error Code Error Description Board
1 192KHz clock not present CNTRL
2 Positive 15V aux PSU
4 Negative 15V aux PSU
8 Positive 5V analog PSU
100 Negative power rail Ch1 PSU
200 Negative power rail Ch2 PSU
2000 Positive power rail Ch1 PSU
4000 Positive power rail Ch2 PSU
8000 External auxiliary voltage PSU
Check Rail Fuses Check rail fuses Ch1 and Ch2 AMP
The error code value displayed in the main screen is the sum of the
single error code value.
Example: 4301=4000+200+100+1 means
Positive power bus Ch2 +
Negative power bus Ch2 +
Negative power bus Ch1 +
192 KHz clock not present
Expired FW 5.3.8 displayed: contact service centre.
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