Akai AC-410

IV. MECHANICAL ADJUSTMENT
4-1. ADJUSTMENT OF THE HEADAZIMUTH
ALIGNMENT
1} Connect an oscilloscope to the L-ch and R-ch speaker
terminals of the unit. Set the VOLUME control on the
FRONT PANEL at the appropriate level (ie, the output
levei is not too low or too high).
2) Play back a 10 kHz (-15 dB), HEAD AZIMUTH
ALIGNMENT TEST TAPE (TF-106CH) then adjust the
HEAD AZIMUTH ALIGNMENT @® (FWD PLAY) and ®
(REV PLAY) SCREWs respectively so that the waveform
level of both the L-ch and A-ch are at maximum and also
they are in the same phase in both FWD and REV
directions. (Use a sharp edge philips type screwdriver that
is de-magnetized for adjustment.)
Perform the adjustment on both the TAPE-I and TAPE-II
heads if necessary.
SCREW (A) SCREW SCREW (A) SCREW
(REV) (FWO) (REV) (FWD)
TAPE -I TAPE - 1
Fig. 4-1
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