Teac W-760R - Adjustment and Checks; 2-1 Mechanical Adjustment; Wow and Flutter Measurement; Tape Speed Adjustment

| W-760R
2 ADJUSTMENT AND CHECKS
«SS Ce
2-1 MECHANICAL ADJUSTMENT
2-1-1 Wow and flutter (playback method)
Note :In both FWD and REV play modes, these
measurements should be made at the beginning,
middie, and the end of the tape.
1.
Connect
a
wow
-and-flutter
meter
to
the
deck
as
shown
in Fig. 2-1.
2, Load and play a TEAC MTT-ILIN test tape.
3. Check that the readings on the wow~and-flutter meter
is within 0.15% (WRMS).
OUTPUT
2-1-2 Tape speed
1. Connect a frequency counter to the deck as shown in
Fig. 2-1.
2, Load a TEAC MTT-111N test tape and play in FWD
direction the beginning of the test tape.
3.
Adjust
each
variable
resistor
to
get
the
following
values.
CONTROL PCB
—
Short | HIGH SPEED |
Open | LOW SPEED
@
2-1 HR ORE
21419975549 (BAK)
FE: FWD, REVESA I CF — 7 OARS, CH BK) SHES.
lL. Fig. 2-1D E399 + FPG R-V-EERT SS.
2FALF-TMTT-1LINEBETS.
3.97+75 7 7§820.15 % (WRMS) DE CHSC LEER
FS.
Frequency Counter
2-1-2F7-FAE-F
lL. Fig. 2-LOK3 ICRA OY - ERET SO
2.FARF-PMTT-1LLUN OBIS OME FWD AR CHET 3.
3. AREBUBA FT ROMBA EZ KS, SEAM VR (Fig. 2-2)%
ETS.
HIGH speed | check
—y ——
LOW speed } VR2
5,840~6,160Hz
2,995~3,005Hz
pLaysack I
4
(measured value of
Deck I high speed)
+ 30Hz
FytLALRZE-K
Qa + 30Hz
2,995 ~3,005Hz
HIGH: speed
rec/pLay I ae
LOW speed VR4 |
Fig. 2-2
4.1% play mode, check that the following values are
obtained at the beginning and end of the tape.
Speed drifting : Within 120Hz (HIGH speed)
Within 60Hz (LOW speed)
4, BIBDD OBR ECHEL. BENE ETERS 4.
ZESIR: 120H2LIN (4 RE-F)
6OHzLIN (a—-RE-~ #)