Akai VS-2EGN

X. TAPE TRANSPORT ADJUSTMENT
1. TAPE GUIDE HEIGHT ADJUSTMENT
1) Set the cassette tape and achieve PLAY mode.
2) Make adjustment with the supply guide height
adjustment nut, so that the lower part of the
tape will pass the lower part of the guide pole
without curling as shown in Fig. 10-1.
3) Make the same adjustment as that in 2) with the
take-up guide height adjustment nut.
2. GUIDE ROLLER HEIGHT ADJUSTMENT
(UPPER DRUM
GOOD
1) Slightly loosen the set screw at the lower part
of the guide roller so that the guide roller can
be adjusted with reasonable tightness (See Fig.
10-4).
2) Connect an oscilloscope to P202 G) (FM enve-
lope out) of the Audio/pre P.C Board.
102
NO GOOD
Fig. 10-3
‘Service Manual VS-2EGN’
GUIDE POLE
TAPE
‘no cooo— Goon :
Fig. 10-1
(4) SLANT POLE
(6) LOADING POLE
@LOweR DRUM
@ rum LEAD
Fig. 10-2
GUIDE ROLLER
HEIGHT ADJUSTMENT NUT
SET SCREW
Fig. 104
3) Set the reference tape AT-750795 and achieve
PLAY mode.
4) Ensuring it that the oscilloscope shows such a
waveform as shown in Fig. 10-5 and also watch-
ing the point (7) of Fig. 10-2, adjust the height of
the guide roller (R) so that the tape runs without
curling as shown in Fig. 10-3(a).
5) Similarly, adjust the height of the guide roller (L)
watching the waveform on the oscilloscope and
the point (8) of Fig. 10-2.
6) Make sure that there is no shaking in the picture
of the monitor TV.
7) Fix the guide roller with the set screw.