2L6/2N6/2N5/2N4-7
1-4-197
F000 Communication error
between main PWB and
operation PWB
Main PWB
1. Turn the main power swtch off and after
5 seconds, then turn power on.
2. Check that the wirings and connetors
between the main circuit PWB and the
operation circuit PWB and between the
main circuit PWB and the HDD are
normal.
Main PWB (YC12,YC17,YC30) and
Operation PWB (YC1,YC2,YC3)
3. Check that the DDR memories in the
main circuit PWB are well conducted
and, if not, replace.
4. Execute U024 to initialize (FULL) the
HDD (see page 1-3-32).
5. Execute U021 to initialize memory. (see
page 1-3-31)
6. Replace the Main PWB.
7. Copy the log File saved in the HDD by
U964 in USB memory and contact the
service support (see page 1-3-235).
Operation PWB Replace the operation PWB (see page 1-5-
90).
F010 Main PWB checksum error
Main PWB
1. Turn the main power swtch off and after
5 seconds, then turn power on.
2. If not corrected, replace the main PWB
(see page 1-5-72).
F020
F021
F022
F023
System memory error
Error occurs at start-up read/
write check of DIMM
Main PWB
1. Turn the main power swtch off and after
5 seconds, then turn power on.
2. If not corrected, replace the main PWB
(see page 1-5-72).
Code Contents Related parts
Check procedures/
corrective measures
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