Teac CX-350 - Mechanical Adjustments and Checks; Capstan Assembly Thrust Adjustment; Pinch Roller Pressure Adjustment; Reel Torque Adjustment

| CX350/CX-351
4 MECHANICAL ADJUSTMENTS AND CHECKS
4-1 CAPSTAN ASSEMBLY THRUST
Capstan shaft thrust value: 0.05 mm to 6.15 mm
4-2 PINCH RDLLER PRESSURE
1. Set in the play mode with no tape.
2. Measure the pinch roller pressure when tha pinch roller just
begins rotation after it is separated from the capstan shaft.
Pinch roller pressure: 350 g to 450 g (12.3 oz to 15.9 02)
4-3 REEL TORQUE
1. Load a cassette torque meter and read the pointer indication on
the dial scale for each tape movement operation.
Take-up: 40 to 60 g-cm (0.56 to 0.83 oz-inch)
Supply: 2 to 6 g-cm (0.028 to 0.083 o2z-inch)
F.F.: 80 to 150 g-cm (1.1 to 2.1 oz-inch)
REW.: 90 to 150 g-cm (1.2 to 2.1 02-inch)
4-4 TAPE SPEED
1. Load and play a TEAC MTT-1114 test tape.
2. Using a common slotted screwdriver with a handle completely
insulated from the screwdriver blade, adjust the control on the
motor (as far as possible) for a reading of 3,000 Hz (Spec.:
3,000 Hz +5 Hz).
MOTOR SWITCH
NOTE: This tape speed sctting should be done after about 20
seconds of operating time.
3. Check the following at any portion of the tape run.
Tape speed deviation... ....... 3,000 Hz +60 Hz
Tape speed drift ........... 60 Hz
4-6 MUTING SWITCH
1. When the PLAY key is pressed then locked, the muting switch
should be pushed positively.
2. When in the STOP mode, the switch should return to the original
released condition.
4-6 MDTDR SWITCH
1. When the PLAY, F.F. or REW. keys are depressed, the motor
switch should become ON to start motor rotation.
2. When in the STOP condition, the switch should be off to stop
motor rotation.
4-7 LDCK PLATE RELEASE SDLENDID
1. Adjust the lock plate release solenoid position so that when its
plunger is pushed into the solenoid housing (bottomed) by hand,
the solenoid is positioned as far from the keys as possible but
be sure that the lock plate does not foul the flywheel.
DC MOTOR
MUTING SWITCH
TA-1174-|
LOCK PLATE RELEASE SOLENOID
(MEMORY STOP)
Fig. 3-3