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3. ACE HEAD ADJUSTMENT (Refer to Fig-5.)
1) Slantness Adjustment Procedure
@ Insert the recording tape without cassette lid,
into the machine and establish the playback
mode.
@ Turn the tilt adjustment screw clockwise until
tape curl is generated at the lower flange of the
TAPE GUIDE ASSY ©). (Refer to Fig-2.)
@ Turn the tilt adjustment screw counter-
clockwise until tape curl disappears at the lower
flange of the TAPE GUIDE ASSY ©.
2) Height Adjustment Procedure
@® Connect an oscilloscope to the AUDIO OUT
terminal.
*
Set the TIME range of an oscilloscope to 5
msec/div.
@ Playback the alignment tape.
@® Adjust the height adjustment screw until the
waveform has the maximum amplitude.
3) Azimuth Adjustment Procedure
@ Connect an oscilloscope in the same way as the
previous item ""2) Height Adjustment
Procedure".
@ Playback the alignment tape.
@® Adjust the height adjustment screw until the
waveform has the maximum amplitude.
X Value Adjustment
050
Tape
ilt Adjustment Screw
Azimuth Adjustment Screw
60-ACE Head
Base Ass'y
Tape
Cassette Case
21
_ 4. X VALUE ADJUSTMENT
1) Connect an oscilloscope in the same way as the
previous section "2. FM ENVELOPE
ADJUSTMENT".
2) Adjustment Procedure
@ Set the Tracking to the MANUAL mechanical
center position.
@ Adjust the X value adjustment point until the
FM envelope waveform has the maximum
amplitude.
@ Tum the Tracking volume control in the
direction of either "+" or "-" from the
mechanical center position, and confirm that
amplitude of the waveform decreases while
maintaining the flat wave shape.
Adjustment
Screwdriver
(Large)
Fig-6
5. RG POST HEIGHT ADJUSTMENT
1) Insert the recording tape without cassette lid,
into the machine and establish the REVIEW
mode.
2) Adjustment Procedure
@ Turn the RG post height adjustment screw
clockwise until tape curl is generated at the
lower flange of the TAPE GUIDE ASSY ©.
(Refer to Fig-2 and Fig-6.)
@ Tur the RG post height adjustment screw
counter-clockwise until tape curl disappears at
the lower flange of the TAPE GUIDE ASSY ©.
*
When performing this adjustment, find the
adjustment point where tape curl disappears and the
playback picture does not have vertical shaking
during REVIEW mode.
;
6. CHECK
0 Check that there is no tape curl at the
respective tape guides from @ to ©. If tape curl
is observed, repeat adjustment starting from the
section "2. FM ENVELOPE ADJUSTMENT".
2) Apply the Neji-lock to the locking screw and tilt
adjustment screw.
201-RG Adjustment Nut
~~.
90-Pinch Roller
Amm Ass'y
Fig-7
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