Sansui P-L50 - Page 10

—4-3.°Speed Adjustment
t-a) Set the Speed Selector to Normal.
1- b) Mount a 30 cm size record and push the start/stop switch.
1-c} Adjust eVRI on the D.D. Motor Control Circuit Board (See,
4- 5) so as to standstill the strobo marking Bariein,
2-a) Set the Speed Selector to Normal.
2-b) Mount a 17 cm size record and push the start/stop switch.
2-c) Adjust eVR2 on the D.D. Motor Control Circuit Board (See
4-5) so as to standstill the strobo marking pattern.
@® Set eVR3 (S- 0121 } center position.
__ Fig. 4-5 Bottom View
Small Screw
\ VR1, 33rpm_—
eer Ne eVR2, 45rpm
4-4. Lateral-direction Adj justment of E and F
Sensor (P- L50) —
1. Setting
a) Mount a record disc in which many music groove.
b) Set the sensitivity selection switch to H when the music interval
groove is narrow, and to 'M when medium.
2. How to adjust (See Figs. 4-6 and 4-7) | |
a) Push the music selection switch for the first music, and also the
start/stop switch.
b) Immediately after the stylus begins to come down, move the arm
by hand so that the stylus may trace the disc groove beginning
from a position 2mm or more outward from the lead-over Ercone
about 70 mm away from the disc center.
c) Immediately after the above tracing, push the lifter switch twice.
Be sure to push it with a time interval of 1 sec or more, because
Qf a ready operation to receive F4 signal. |
\ djust the positions of E and F sensor by rotating the adjusting
“screws so that the muting switch can be turned ON (a click
sound of relay action is heard) when the stylus has passed
through the music interval groove. If the muting switch is turned
ON earlier, rotate the adjusting screw clockwise to turn ON the
switch later. (The thread pitch is 0.4 mm.)
Fig. 4-6—
Peer 70~75mm
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tracks, and adjust the operations by rotating the volume (fVR3) as
Fig. 4-7
L.ED, gen P
E-sensor Adjusting
Screw
sensor
4-5, Delay Adjustment of E, i (P- ae
si Setting
Use the record disk in which many musics (about seven music
tracks) are recorded, and select three music tracks having fead-over
grooves, respectively, near positions 70mm, 100 mm, and 130 mm
away from the disc center.
2. Adjustment (See Figs. 4-8 and 4-9 , Top View on n Page 14)
Perform the respective lead-in operations for three selected music
shown in Fig. 4-3 so that the stylus comes down on or a little before
the lead-over grooves for the three music tracks. If the volume
(fVR3) is rotated clockwise, the lift- ade position oF the stylus is
shifted inward.
Note: In the lead-over grooves existing on a 70 mm-or-less from the
| center, the misplacing of the arm in detection position occurs
‘inevitably.
Fig. 4-8 |
Cartridge
4 Disc
Fig. 4-9
(to in ward)
Music
(Request) Music ; {Music}
interval
Note: Remove the cabinet before adjustments of 4-6 and 4-7.
6 ‘How to remove the cabinet. (See Top View on Page 13)
1) Take off turntable sheet and turntable platter.
2) Remove the play case cover.
3) Loosen 2 screws in holes of top side.
4) Loosen 7 screws S to remove cabinet. (See Fig. 4- 5)
5) Remove the cabinet upward slowly.
Note: Do not strike tone arm with the cabinet.
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