Memory Error - Mitsubishi FREQROL-SFJ Maintenance Manual

(2) MEMORY ERROR 1

This display appears if read from, or write to the memory in-
corporated in the controller cannot be done successfully.
Cause
ROM load&d im-
properly
Card SFJ-CA1
trouble
(3) MEMORY ERROR 2
This display appears if the buffer for bus-linkage with
CNC, M300 series, does not function properly.
Cause
Bus linkage ca-
ble defective
--
Card SF-TLJ
trouble
(4) NO SIGNAL SPINDLE ENC.
This alarm appears if signal from the encoder is not input
correctly.
Checkup
Visually check that all
pins of ROM are put into
the socket properly.
Check card SFJ-CAl.
Checkup
Replace the cable in use
with a new cable ta
check.
After making sure this
alarm is reproducible,
replace the card SF-TLJ
in use with a new SF-TLJ
card to check.
Remedy
Load ROM Properly.
Replace the card
Remedy
Replace the cable.
Replace the card SF-
1