Sony ps lx 300 h service manual

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P_S-LX300H

SERVICE llllANUllL usmde,

Canadian Model

AEP Model

UK Model

a E Model

09"

SPECIFICATIONS REPLACING THE STYLUS

Motor and Platter
Drive system Bell-drive
Motor DC motor
Platter 33] mm dia die-cast aluminum alloy
Speeds 33 1I3 and 45 rlmin, 2 speed
Wow and flutter Less than OJ 1: (WRMS)
Signal to noise ratio More than 55 dB (DIN-B) with supplied

cartridge

Replace the stylus alter about 500 hours of use because using a
T°"° Am , n .. worn stylus will damage records. An (ZN-251 replacement stylus is
Type Umvcml S shaped tubular arm 'Iabl ' S d al
Effectch arm length 230 mm 3V3] e a your ony .9 er" 2 .
Overhang 15 mm Be sure to turn the amplifier all before proceedInQ wtth replacement.
Usable cartridge weight 3 g (min) to 8 3 (max)
1. While holding the cartridge, detach the stylus assembly as
illustrated.

General 2. Insert the new stylus into the cartridge.
Power reqmrcmcnls US, Canadian model: 120 V AC, 60 Hz

AEP. UK. German model: 220 -- 240V AC,

50/60 Hz

r5 model: 110 -120/220 » 240 v AC.

50/60 Hz
Power consumption 6 W
Dimensions Approx 450 x I60 x 360 mm (w lh l d)

(17 3/x6 3/,>< 14 I Inches)
Mass 7kg(15]b7oz)

Supplied Accessories

45 r/rnin adaptor (I)
Plnner (with drive belt) (I)
Rubber mat (I)

Cartridge and hendshcll (I)
Counter weight (I)

Dust cover (I)

Plug adaptor (E model) (I)

Design and specifications are subject to change without notice.

STEREO TURNTABLE SYSTEM
S 0 NY;

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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.

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
WT-540A, Follow the manufacturers instructions to use these
instruments,

2. A battery-operated AC milliammeter, The Data Precision 245
digital multimeter is suitable for thisjob.

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)

To Exposed Metal
Parts on Set
AC
0. 15 uF 1.5 kn / Vo/rmetsr
'[ (0. 75 v;
E- Eanh Ground
Fig. A. Using an AC voltmeter to check Ac leakage.

SAFETY-RELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BY MARK A on DOTTED
LINE WITH MARK A: 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.

ATTENTION AU COMPQSANT AYANT RAPPORT
A LA SECURITE!

LEs COMPOSANTS IDENTIFIES PAR UNE MARQUE A.
sun LES DIAGRAMMES SCHEMATIOUES ET LA LISTE
DES PIEcEs SONT CHITIOUES POUR LA sEcuané
DE FONCTIONNEMENT. NE REMPLACER css COM-
POSANTS QUE PAR nEs PIECES sonv DONT LES
NUMERos SONT DONNEs DANS CE MANUEL ou
DANS LES SUPPLEMENTS puaLrEs PAR souv.