Sansui P-M7 - E2 Signal Delay and Tone Arm Wire Tension; DD Motor Control Variable Resistors; Parts Lists and Diagrams; Front and Top View Parts Lists

P-M7
D. Delay adjustment of E, signal
1. Setting
Use the record disk in which many musics (about seven music
tracks) are recorded, and select three music tracks having lead-over
grooves,
respectively,
near
positions
70mm,
100mm,
and
130mm
away from the disc center.
2.
Adjustment
(See
Fig.
3-5,
Top
View
on
Page
8)
Perform the respective lead-in operations for three selected music
tracks, and adjust the operations by rotating the volume (fVR4) as
shown in Fig. 3-3 so that the stylus comes down on or a little before
the
lead-over
grooves
for the
three
music
tracks.
If
the
volume
(fVR4) is rotated clockwise, the lift-down position of the stylus is
shifted inward.
Note: In the lead-over grooves existing on a 70mm-or-less from the
center, the misplacing of the arm in detection position occurs
inevitably.
Fig. 3-5 Cartridge
Disc
5/4 3 2)
! 7,6
Jom ——--|
10cm
13cm
Note: Remove the cabinet before adjustments of 3-3 and 3-4.
How to remove the cabinet. (See Top View on Page 8)
Unscrew
seven
cabinet-mounting
screws
on
the
bottom
of
the
chassis,
Remove
the
E-ring
fixing
the
turntable
to
the
spindle
of
the
motor.
3) Remove the player case cover.
4)
Move
the
tone
arm
to
the
player
case
cover
Position
by
depress-
ing
the
MANUAL
key
(
4
),
before
removing
the
cabinet.
3-3. Arm Servo Adjustment (See Fig. 3-4, Fig. 3-6)
A. Setting
1) Move the tone arm leftward and stop it within the record-play-
able range by depressing the MANUAL key ( > ).
2)
Move
the
tone
arm
downward
by
depressing
the
UP/DOWN
key.
B. Adjustment
1) Loosen the sensor holder fastening bolt, and adjust the arm servo
adjusting
cam
so
that
the
tone
arm
does
not
move
in
either
direc-
tion, in the state where the tone arm is in the down position.
-e@
—
2
—
2)
After
adjustment,
check
that
the
voltage
across
the
connector
terminals
No.
9
or
TP6
and
GND
of
S-0107
(across
the
terminals
of
the
micromotor
(I)
is
within
OV
+1V
when
the
sensor
holder
fastening
hexagon
bolt
is
fastened.
3)
Check
that
the
tone
arm
will
not
move
in
either
direction
when
the
UP/DOWN
key
is
depressed
repeatedly.
Fig. 3-6 Arm Servo Adjusting Cam
Sensor Holder
Fastening Bolt
3-4. Tension Adjustment of Tone Arm
Horizontally Driving Wire (See Fig. 3-4)
Move the tone arm by depressing the MANUAL key and adjust the
tension adjusting screw so that the wire does not slip along the driv-
ing gear.
Note: Care must be taken not to fasten the tension adjusting screw
too tightly.
® Variable resistors in the DD motor control circuit
The variable resistors (eVR1, eVR2 and eVR3) in the DD motor
control circuit are used for adjusting wow and flutter. These variable
resistors have already been adjusted accurately before shipped, be-
cause a special measuring instrument is required for adjustment.
Therefore, when the motor is required to be replaced by a new one
because of irreqular rotation, replace the motor assembly and all
(Stock No. 18022201).
4. OTHER PARTS
Parts List <Front View>
Parts No. Stock No.
Description
=
18026401 Tone Arm Ass’y with Cartridge
SV-S303
2 13110600 Stylus, SN-S303
3 13103900 Arm Rest
4 13105000 Control Plate
5 18025401 Push Knob Ass‘y (1)
5-1 Mounting Plate, push knob
5-2 13099700 Push Knob, START/STOP
5-3 13099800 Push Knob, MANUAL, UP/
DOWN, REPEAT
6 13100000 Slide Knob, SPEED,
SENSITIVITY
7 18025501 Push Knob Ass’y (2)
7-1 Mounting Plate, push knob
7-2 13089800 Push Knob, CLEAR, music
selection 1 ~ 7
8 13099900 Push Knob, POWER
8-1 Knob Holder
9 13099210 Turntable Platter
10 13099110 Turntable Sheet
41 13012300 EP Adaptor
12 13112000 Dust Cover Ass’y
13 13113600 Side Hinge (L)
14 13113700 Side Hinge (R)
15 13113800 Hinge Cap
16 13115100 Screw, M2.6 x 8
13097300 Insulator
Note: Parts without Stock Nos. are not supplied even parts
names are listed in the parts list.
Parts List <Top View>
Parts No. Stock No. Description
1 38004700 Power Supply Cord
2 39106000 Strain Relief
3 13062500 Output Cord
4 39105700 Strain Relief
5 46170400 Jack, computer editing
6 13097910 Wire
7 13097400 Pipe (S)
8 13088300 Pulley (B)
9 13106000 Pipe (L)
10 13106200 Pipe Holder
11 18022201 SSD-1 DD Motor Ass‘y with
control circuit board S-0097
12 15005801 Power Transformer
07204700 Slide Switch, voltage selector