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Link Fault

•Power ON test for AP-0 and AP-1 are completed successfully and both the MU ports are enabled & giving the message LF to 5c & LF to 5d
• Verify the jumper setting of APU frame :
APU motherboard Copy 0 side:
Jumper W1,W2 (Shorted vertically) W3,W6,W8,W10 are to be shorted.
APU motherboard Copy 1 side:
Jumper W14,W16,W18,W19,W20(Shorted vertically) are to be shorted.
Check the status of IOP using CRP command 'displ-iop-level' and it should give self iop status INS-ACT and AP comm. yes, otherwise check the link between the IOP and APU.
Verify the cable connection according to the IOP i.e IOP-0 or IOP-1 at HPU end.
This may be due to the improper IOPid or wrong connectivity between IOP and AM. Check the proper cabling between IOP and AM.