Electrical Adjustment - Sony PS-LX310BT Service Manual

PS-LX310BT
DC MOTOR SPEED ADJUSTMENT
When replace the motor, perform this adjustment.
Necessary equipment:
• Speed adjustment sheet (stroboscope) (Fig A)
Note: Enlarge the "SPEED ADJUSTMENT SHEET (STROBOSCOPE)"
of page 10 and please use print it.
• LED light bulb without the inverter (Fig. B)
• LED light bulb socket (Fig. C)
• Ceramic screwdriver for resistor adjustment
(Recommended screwdriver size 0.4  1.3 mm)
• Stand for putting the main unit
– Fig. A –
– Fig. B – – Fig. C –
Installation method:
Holes for adjustment (bottom side)
(Not covered the holes by a stand)
Stand
Keep the height that
theceramic screwdriver
can be used.
25
SECTION 3

ELECTRICAL ADJUSTMENT

Power supply frequency
for 60 Hz.
inside : for 45 rpm check
outside : for 33 rpm check
Power supply frequency
for 50 Hz.
inside : for 45 rpm check
outside : for 33 rpm check
Attach the stylus
protective cover
front side
Stand
Procedure:
1. Installing the main unit by referring to "Installation method".
2. Place the mat onto the turn table (platter), and place the speed
adjustment sheet (stroboscope) onto it.
Speed adjustment
sheet
Mat
Turn table
(Platter)
3. Press the [ON/STANDBY] button to turn the power on.
– Rear view –
4. Set the SIZE rotary switch knob to "12" and the SPEED rotary
switch knob to "33".
5. Press the [START] button, and the tone arm automatically lifts
up and move for the turn table (platter) side. Immediately press
the [UP/DOWN] button to pause before the stylus descends on
the turn table (platter) (the turn table (platter) keeps rotating).
Sony CONFIDENTIAL
For Authorized Servicer
SIZE rotary
switch knob
SPEED rotary
switch knob
START STOP UP/DOWN
START STOP UP/DOWN
– Continued on next page –
SYS SET