1-D. Azimuth Alignment of Audio/Control/ 2. When the tape has been curled up or bent, turn
Erase Headthe alignment screw to adjust the height of REV
Post. (Refer to Fig. M11 and M13.)
Purpose:
To correct the Azimuth alignment so that the Audio/
Control/Erase Head meets tape tracks properly.
Symptom of Misalignment:
If the position of the Audio/Control/Erase Head is not
properly aligned, the Audio S/N Ratio or FrequencyREV Post [5]
Response will be poor.
1. Connect the oscilloscope to the audio output jack
on the rear side of the deck.
2. Playback the alignment tape (MH-2) and confirmTake-up Guide Post [4]
that the audio signal output level is 8kHz.Fig. M11
3. Adjust Azimuth Adj. Screw so that the output level
on the AC Voltmeter or the waveform on the oscil-
loscope is at maximum. (Fig. 5-4-6)CorrectIncorrect
Note: Upon completion of the adjustment of AzimuthREV Post
Adj. Screw, check the X Value by pushing the CH UPTape
or DOWN buttons alternately, to check the symmetry
of the envelope. Check the number of pushes to
ensure preset position. The number of pushes CH UP
button to achieve 1/2 level of envelope should matchTake-up Guide
the number of pushes CH DOWN button from center.Post
Tape
If required, redo the ?X Value Alignment.?
1-E. Checking and Alignment of Tape
Path during reversing
Fig. M12
Purpose:
To make sure that the tape path is well stabilized dur-
ing reversing.
Symptom of Misalignment:
If the tape path is unstable during reversing, the tape
will be damaged.
Alignment
Note: Do not use an Alignment Tape for this proce-Screw
dure. If the unit is not correctly aligned, the tape may
be damaged.Tape Guide
1. Insert a black cassette tape into the tray and setAssembly
the unit to REV. Then confirm if the tape has been
curled up or bent at the Take-up Guide Post[4] or
REV Post[5]. (Refer to Fig. M11 and M12.)
Fig. M13
5-8 |
ACEC
