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11 - Maintenance, etc.
69
TASCAM DA-78HR
4
Play the suspect tape. The track meters are
used to show the error rate at different loca-
tion, as listed below:
The number of segments lit indi-
cates the blocks containing
errors (per group of 128 blocks),
as shown here.
It is inevitable that there will be
a few errors, but if the meter
segments are consistently lit
while the tape is playing, some-
thing is wrong (and you will
almost certainly be able to hear
it!).
Use this display to show where
the tape is in error, and which head is causing errors.
In this way, you can pinpoint any trouble.
If playing another tape seems to remove the errors,
the problem is with the tape, otherwise you may want
to clean the heads (11.1, “Head and transport clean-
ing”). Remember not to clean the heads more than 5
times in a row.
NOTE
If, after trying di fferent tapes and cl eani ng the heads,
you still see many errors, you should contact a
TASCAM service technician to check your DA-78HR.
5
Use the ▲ and ▼ keys to turn off the error dis-
play and use the meters for their normal
functions.
11.1.3 Checking drum time
This function allows you to check the number of
hours that the drum has been used overall, as well as
in fast forward or rewind (search) mode.
1
Press the
SHIFT
key so that the
SHIFT
indicator
is flashing, and press the
MENU
key until the
display shows
MAINTN-- (
MAINTN--
—
maintenance).
2
Press the
SUB MENU
key until the display
briefly shows
DRUM. TIM (
DRUM TIM
—drum
time) . The display then changes.
3
Use the ▲ and ▼ keys to choose between
d. ;;;; (
D xxxx
—total drum time) and
d. s. ;;;; (
D.S.xxxx
—drum search time).
xxxx represents the time in hours shown beside
the appropriate parameter.
11.2Backup memory initialization
The DA-78HR includes non-volatile memory
(NVRAM) which preserves almost all user settings
after the power is turned off.
To reset these settings to their default values (defaults
are listed in 4, “Menu interface, etc.”):
1
Press the
SHIFT
key so that the
SHIFT
indicator
is flashing, and press the
MENU
key until the
display shows
MAINTN-- (
MAINTN--
—
maintenance).
2
Press the
SUB MENU
key until the display
shows
INIT. (
INIT
) .
3
Press either ▲ or ▼ to change the display to
show
READY (
READY
).
4
Press either ▲ or ▼ once again to initialize all
the stored parameters to the factory settings.
The unit will show
done (
DONE
) and will re-
start (as if power had just been turned on).
11.3Checking version numbers
In case of problems, you may need to quote the ver-
sion number of the DA-78HR’s internal software
components to a TASCAM representative.
There are three major components of the DA-78HR’s
internal software: system, front panel and servo.
Each of these can be checked independently.
1
Press the
SHIFT
key so that the
SHIFT
indicator
is flashing, and press the
MENU
key until the
display shows
maintn-- (
MAINTN--
—
maintenance).
2
Press the
SUB MENU
key until the display
briefly shows
VERsion (
VERSION
) and then
changes to either
SYS ;. ;; (
SYS x.yy
—the
system software),
Frnt ;. ;; (
FRNT x.yy
—
Tape edge (head A)
Tape edge (head B)
Tape center (head B)
Tape center (head A)
96-128
88-95
80-87
72-79
64-71
56-63
48-55
40-47
32-39
24-31
16-23
6-15
0-7
(none lit)