Appendix 3 Trouble-Shooting - Alesis BRC Reference Manual

6.2 APPENDIX 3: TROUBLE-SHOOTING
Symptom
The LCD does not light when the
POWER switch is turned on.
The record-enabled tracks' VUs
do not indicate any input.
When the BRC is turned on,
it does not display the correct
number of connected ADATs.
The BRC Tape Position Counter
reads "Er on 1" – "Er on 16".
BRC loses control of one or more
ADATs.
SMPTE runs at a different speed
on the BRC than at its source.
The BRC doesn't sync properly to
composite video.
When sending SMPTE from the
BRC to a MIDI Time Piece®, the
MTP has problems detecting
changes in SMPTE frame rate.
®MIDI Time Piece is a registered trademark of Mark of the Unicorn
Solution
Make sure the power cable is plugged
in properly; also check that the LCD
contrast adjustment is correctly set.
Check cables. Has the DIGITAL I/O
button been turned on?
Check your connections. Swap
cables, then turn the BRC on again. Be sure
all ADATs are powered on.
Indicates that an ADAT's error
correction system is near the limits of
its capacity. The number (1–16) will
indicate which ADAT is having the
problem. If this should occur, make a
digital back up of the tape. If the
problem persists, contact Alesis.
The BRC may not have recognized all
ADATs. Turn the BRC off and on, so
that it re-scans the system for all con-
nected ADATs and reassigns the IDs.
Make sure you have selected the cor-
rect SMPTE rate and format on the
BRC. Though the BRC automatically
detects the SMPTE rate, it cannot tell
the difference between 29.97 and 30
fps, because they are too similar.
The BRC's video sync doesn't like EP
Mode (extended play) on some
consumer VCRs. Be sure to only use
SP Mode (standard
play) source tapes when using a
consumer VCR which allows both SP
and EP Modes for recording.
Disable jam sync and freewheeling on
the MTP when using the BRC as a
SMPTE source. Only use these MTP
options for reading SMPTE from tape
to safe-guard against drop-outs
(freewheeling) or when continuing/
refreshing a SMPTE stripe (jam sync).
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