Teac CX-270 - Mechanical Adjustments and Checks; Test Equipment; Capstan Assembly Thrust Adjustment; Tape Speed Adjustment

€X-270/CX-210 |
4 MECHANICAL ADJUSTMENTS AND CHECKS
:
4-1
TEST
EQUIPMENT
4-2
CAPSTAN
ASSEMBLY
THRUST
|
NOTE:
When
ordering
special
tapes
indicated
by*,
allow
for
the
1.
Adjust
the
thrust
adjusting
screw
so
that
thrust
of
the
capstan
|
longer
delivery time
that
is
required
for
them.
shaft
is
limited
to
spec.
|
1.
Spring
scale:
For
pinch
roller
pressure
check,
0
to
Specification:
—
0.05mm
to
0.10mm
1
500g
(17.602z.)
T
|
2.
Wow/flutter
meter:
|
3.
Frequency
counter:
Digital
type,
capable
of
10Hz
to
100
i
kHz
indication
Thrust
|
4. Cleaner: TEAC 1TZ-261 tape recorder cleaner adjusting
kit
or
pure
alcohol
ree
5. Test tape*: TEAC MTT-111 (for tape speed and
wow/flutter test, 3,000Hz is recorded)
6. Cassette torque meter*: For take-up and supply torque checks,
0 to 100 g-cm (0 to 1.4 oz-inch)
-For fast forward and rewind torque
checks, 0 to 160 g-cm (0 to 2.2 oz-inch)
7. Compact Cassette MTT-901; C-60, 30m
Tape Path Checker*: MTT-902; C-90, 45m
Thrust play
{I 0.05mm to 0.10mm
TA-I0!19
4-3 TAPE SPEED
1. Load and play a TEAC MTT-111 test tape.
2. Using a common slotted screwdriver with a handle completely
insulated from the screwdriver blade, adjust the control on the
motor for a reading of 2,995Hz to 3,005Hz.
3. Check the followings at the begining and the end of the tape.
Specifications:
Pe
See
Se
RTTE
Tape
speed
deviation.
..
3,000Hz
+
45Hz
ig.
4-
a
g
assette
torque
me
Tape
speed
drift
.....
45Hz
4. If the tape speed is out of spec., check the pinch roller pressure
and the tape driving function for correctness, and check that
the tape path is clean.
Frequency Counter
Fig. 4-2. Compact cassette tape path checker
TEAC Tz-261
‘COROER
~ ANER
Fig. 4-3 TZ-261 Tape recorder cleaner kit
Internal Adjustment TA-1020
for Tape Speed
Fig. 4-6 Tape speed adjustment location