,. . .... .. .. .... .... ...-: -.. .....-
\PE DECK ADJUSTMENTS
+EAD REPLACEMENT
fter replacement, demagnetize the heads by using adegausser.
esure to clean the heads before attempting to make any adjustments.
II wiring should be returned to the original position after work is completed.
+EAD AZIMUTH ADJUSTMENT
Connect the oscilloscope to the PHONES socket.
Load the test tape(MTT-113N, etc., 10 kHz) for azimuth
adjustment.
Press the PLAY button.
Use across-tip screwdriver to turn the screw for azimuth
adjustment so that the left and right outputs are maximized. HEAD AZIMUTH ADJ.
Press the STOP button.
After completion of the adjustment, use thread lock(TB-1401 B)
to secure the azimuth-adjustment screw. PIAY
MOTOR REPLACEMENT
BIAS FREQUENCY ADJUSTMENT TAPE
)Connect the frequency counter to the HEAD terminal. GND
)Load the test tape(TDK-AD60, etc.). FREQUENCY COUNTER
)Press the REC &PLAY button. m,.,
)Use aflat-tip screwdriver to turn the L9 for BIAS adjustment TPI 0IN 00000
so that the frequency counter becomes 65+/-2kHz.
CHECKING THE MECHANISM TORQUES AND TENSION
OIean the head, capstan and pinch roller before making any measurement.
Measurement Take-up torque Back tension Tape tension
Cassette for PLAY: TW-2111A PIAY :TW-2111A Drive-power cassette
measurement F.FWD/REW :TW2231 TV%2412
PLAY 30-60 gr.cm 2.0- 4.5 gr.cm 60 gr or more
F.FWD 55-120 gr.cm ----- -----
REW 55-120 gr.cm ----- .---- *
/.-5-
!
