Sony PS-LX300H Service Manual ▷ View online
MICROFILM
PS-LX300H
STEREO TURNTABLE SYSTEM
US Model
Canadian Model
AEP Model
UK Model
E Model
SERVICE MANUAL
SPECIFICATIONS
Motor and Platter
Drive system
Belt-drive
Motor
DC motor
Platter
331 mm dia. die-cast aluminum alloy
Speeds
33
1
/
3
and 45 r/min, 2 speed
Wow and flutter
Less than 0.1 % (WRMS)
Signal to noise ratio
More than 55 dB (DIN-B) with supplied
cartridge
cartridge
Tone Arm
Type
Universal "S" shaped tubular arm
Effective arm length
230 mm
Overhang
15 mm
Usable cartridge weight
3 g (min.) to 8 g (max.)
General
Power requirements
US, Canadian model: 120 V AC, 60 Hz
AEP, UK, German model: 220 – 240 V AC,
50/60 Hz
E model: 110 – 120/220 – 240 V AC,
50/60 Hz
AEP, UK, German model: 220 – 240 V AC,
50/60 Hz
E model: 110 – 120/220 – 240 V AC,
50/60 Hz
Power consumption
6 W
Dimensions
Approx. 450
×
160
×
360 mm (w / h / d)
(17
3
/
4
×
6
3
/
8
×
14
1
/
4
inches)
Mass
7 kg (15 lb 7 oz)
Supplied Accessories
45 r/min adaptor (1)
Platter (with drive belt) (1)
Rubber mat (1)
Cartridge and headshell (1)
Counter weight (1)
Dust cover (1)
Plug adaptor (E model) (1)
Platter (with drive belt) (1)
Rubber mat (1)
Cartridge and headshell (1)
Counter weight (1)
Dust cover (1)
Plug adaptor (E model) (1)
Design and specifications are subject to change without notice.
REPLACING THE STYLUS
Replace the stylus after about 500 hours of use because using a
worn stylus will damage records. An CN-251 replacement stylus is
available at your Sony dealer.
Be sure to turn the amplifier off before proceeding with replacement.
worn stylus will damage records. An CN-251 replacement stylus is
available at your Sony dealer.
Be sure to turn the amplifier off before proceeding with replacement.
1.
While holding the cartridge, detach the stylus assembly as
illustrated.
illustrated.
2.
Insert the new stylus into the cartridge.
– 2 –
SAFETY CHECK-OUT
After correcting the original service problem, perform the fol-
lowing safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage.
Check leakage as described below.
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground
and from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampers.). Leak-
age current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
return to chassis, must not exceed 0.5 mA (500 microampers.). Leak-
age current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a VOM
or battery-operated AC voltmeter. The “limit” indication is 0.75
V, so analog meters must have an accurate low-voltage scale.
The Simpson 250 and Sanwa SH-63Trd are examples of a pas-
sive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2 V AC range are suitable. (See Fig. A)
V, so analog meters must have an accurate low-voltage scale.
The Simpson 250 and Sanwa SH-63Trd are examples of a pas-
sive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2 V AC range are suitable. (See Fig. A)
1.5 k
Ω
0.15
µ
F
AC
Voltmeter
(0.75 V)
Voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Parts on Set
Earth Ground
Fig. A.
Using an AC voltmeter to check AC leakage.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
!
OR DOTTED
LINE WITH MARK
!
ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE
!
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
– 3 –
This section is extracted from
instruction manual.
instruction manual.
SECTION 1
GENERAL
– 4 –
TURNTABLE ASSEMBLY
SECTION 3
ELECTRICAL ADJUSTMENTS
SECTION 2
SERVICING NOTES
rubber mat
platter
Hook the belt on the motor pulley.
If the belt is removed from the platter, replace it with the
glossy side outward.
If the belt is removed from the platter, replace it with the
glossy side outward.
SETTING THE VOLTAGE SELECTOR
(E MODEL ONLY)
(E MODEL ONLY)
For customers of the model equipped with the voltage
selector
selector
Check to confirm that the voltage selector is set to the local power
line voltage. If not, set the voltage selector to the correct position
before connecting the AC power cord to a wall outlet.
line voltage. If not, set the voltage selector to the correct position
before connecting the AC power cord to a wall outlet.
Speed Adjustment
Note: Be sure to perform 45rpm adjustment before 33rpm.
1.
1.
Set the speed select button to 45.
Press the START/STOP button.
Adjust VR101 so that the striped pattern is stationary.
Press the START/STOP button.
Adjust VR101 so that the striped pattern is stationary.
2.
Set the speed select button to 33.
Adjust VR102 in the same way.
Adjust VR102 in the same way.
VR102
(33rpm)
(33rpm)
VR101
(45rpm)
(45rpm)
SPEED
ADJUST
ADJUST
33
+
+
45
+
+
–
–
.
FRONT SIDE
n
n
110
V 220V
Display
