Sony PS-2250 - Servo Amplifier Chassis Removal; Servo Amplifier Cover Removal; Power Supply Chassis Removal; Motor Replacement Guide

Fig. 2-4. Turntable base removal
2-4. SERVO AMPLIFIER CHASSIS REMOVAL
1. Remove the turntable base as described in
Procedure 2-3.
2. Remove the four screws (@ PS 4 x 6) securing
the chassis to. the turntable base as shown
in Fig. 2-5. Thisfrees the chassis.
i
@. P 3.x 6, self-tapping
servo amp cover remova
ii
Fig. 2-5. Bottom view
2-5. SERVO AMPLIFIER COVER REMOVAL
1, Remove the servo amplifier chassis as described
in Procedure 2-4.
2; Remove the two self-tapping screws(@ P 3 x 6)
securing the servo amplifier cover as shown in
Fig. 2-5, and then slide it in the direction shown
by the arrow as illustrated. This frees the cover.
chassis removal
POWER SUPPLY CHASSIS REMOVAL
Note: The power supply chassis is an angled
member on which the power trans-
former, power transistor and fuse holder
are attached.
Remove the turntable base as described in
Procedure 2-3.
Remove the two screws ( @ PS 4 x 8) and
securing the power transformer cover to the
heat sink as shown in Fig. 2-6, if necessary.
Remove the three screws (@ PS 4 x 25)
securing the chassis to the turntable base or the
bracket, as shown in Fig. 2-5. This frees the
power supply chassis.
Fig. 2-6. Power transformer cover removal
MOTOR REPLACEMENT
Remove the turntable base as described in
Procedure 2-3.
Remove the two seilf-tapping screws (@ P 4x 6)
securing the metal cover over the terminal strip
as shown in Fig. 2-5.
Unsolder the motor lead wires at the terminal
strip, and then remove the four screws
(@ PS 4 x 12) securing the motor to the turn-
table base from the top as shown in Fig. 2-7.
Install the replacement motor.