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TC Electronic A/S Finalizer Service manual page 17
LED Error Codes:
In case of error three LED’s at the main board version PC12001-3 (LD1, LD2, LD3) might show an error code.
LD1 LD2 LD3 Code explanation Comment
off off off The MPU is running OK All LED's must blink once at power up
on on on The program encountered an error while checking its own code Boot sector in Flash is corrupted. Reload boot or replace Flash
Jumper settings:
Jumper settings on main board version PC12001-3: JP2 unused. JP4 & JP5 controls boot mode:
P4
P4
oot from Flash (normal mode) Boot from PCMCIA (only used at factory)
JP5 JP5