Teac X-3R - ELECTRICAL ADJUSTMENT AND CHECKS; POWER SUPPLY CHECK; MONITOR AND OUTPUT LEVEL CHECKS

X-3R
2-13 LUBRICATION
Oiling is needed after every 1,000 hours of operation or once a
year if the deck is used infrequently. TEAC spindle oil (from TEAC
TZ-255 oil kit), Mobil D.T.E. Oil Light, and similar types of oil are
recommended, Lubrication is normally not necessary except at the
points shown.
1. Place the deck in a horizontal position.
2. Apply a few drops of oil to the respective spindles shown, except
the capstan and the reel motors, Spread the oil evenly on the
spindle surfaces using a cotton cloth or similar applicator.
3. For the capstan and reel motors, apply a few drops to the indi-
cated positions but do not spread the oil.
4. After oiling all points, operate the deck fer 1 to 2 hours until the
oil is thoroughly absorbed. Fig. 2-15
3 ELECTRICAL ADJUSTMENT AND CHECKS
NOTES:
1,
Clean
and
demagnetize
the
entire
tape
path
prior
to
3-1
POWER
SUPPLY
CHECK
making
any
adjustments
or
checks,
2. Make sure that the deck is properly set for the volt-
age in your area.
3. Adjustments and checks are generally done in order
of L-ch, then R-ch. Double reference numbers in-
dicate L-ch/R-ch, (Example: R121/R221) R & P AMPL PCB
4. 0B is referenced to 0.775 V. If an AC voltmeter is
used which references 0 dB to 1 V, appropriate com-
pensation must be made,
5. An AC voltmeter with an input impedance of 1M
ohms or more must be used.
6. In the charts, instruction in the MODE/INSTRUC-
TION column at each step is continued from pre-
vious step indication unless specified here.
1. Connect a DC voltmeter to pin 15 of U102 on the R & P
AMPL PCB.
2. The DC voltage shoud be +12 V. (See Fig. 3-1)
DC VOLTMETER
3-2. MONITOR PERFORMANCE Deck settings: MONITOR sw.: SOURCE
MODE/ SIGNAL ADJUST
INSTRUCTION SOURCE (or CHECK) Suyrar REMARKS
MIC
cont:
MIN
rare,
LINE
cont:
MAX
pia
an
na
R123/R223
+1
dB
(0.869
V)
Par
g
min,
input
OUTPUT
cont:
MAX
.
OUTPUT cont.
(L/R)
Specified
if
channels
do
position
for
1. MONITOR not match, re- —5 dB (436 mV) OUTPUT
control
output adjust R123/
R223 to corres-
pond to the
lower OUTPUT,
IMPORTANT: After setting OUTPUT control (L/R), always leave in specified position.
OUTPUT
cont:
400
Hz/—12
dB
LINE
cont
Specified
position
Spec.
position
(195
mV)
mts
for
LINE
control