Alesis ADAT-LX20 Reference Manual page 86

Er 7
Clean Heads: If this error message is seen, it may indicate that the heads
are in need of cleaning. See ADAT Head Maintenance for information about
cleaning your heads.
Er 8
Sync Lost: Error message 8 normally occurs when the tape reaches the end
while formatting or recording. It is caused by the fact that the LX20 cannot
read timing data from the leader. The error is caused by the unit losing
sync. If the unit is being run in the slave mode check the sync cable
connection. It is recommended that only shielded and grounded cables be
used as sync cables.
Er 9
Take-up Reel. This error indicates that the take-up reel didn't move after
PLAY or RECORD was engaged. This can spool tape out of the cassette, so
the LX20 stops the tape immediately. It's possible that the take up reel of
the tape is jammed; try a blank or unimportant tape to see if the error
recurs. The idler wheel that turns the take-up reel may need cleaning or
replacement.
no 9ood tc
No Time Code. The LX20 is reading control track pulses, but no helical scan
time code. Usually, a video tape has been inserted into the LX20. Format
the tape in the ADAT format.
NOTE: "No good tc" will also appear if you insert a Type II (20-bit) tape
into an older, Type I-only machine. Make a 16-bit clone of any 20-bit tapes
for use in older-generation machines.
(Error 10 through 13 and 16 are not used)
Error 14-15
Crossfade buffer, state or channel error. This indicates a problem with the
RAM buffer used for crossfading. Reinitialize the LX20 using the procedure
on page 76. If the problem recurs, the unit must be serviced.
Error 17
End sensor error. One of the optical sensors used to detect the clear leader at
the head and tail of the tape cartridge is not working or is blocked
temporarily. If the error recurs on other tapes, the unit needs to be serviced.
AL P
This error message may appear when you turn on power to the LX20. If the
display also reads "CAL brAC", there may be something wrong with the
battery backup of RAM, or the RAM was accidentally scrambled. If no
other error messages occur during operation, and the Interpolation Indicator
is not flashing, playback and recording are still possible. However, do not
format any blank tapes on the LX20 until the PG is reset .
AL brAc
If this message appears during the turn-on cycle, the brake settings have
been set to the default settings due to a problem with RAM memory or the
backup battery. Perform the automatic brake calibration (see below). If
this message appears in the midst of normal operation more than once in
every ten hours of operation, perform the automatic brake calibration (see
"Automatic Brake Calibration Procedure", next page).
ADAT LX20 Reference Manual
Appendix C - Error Codes
85