Sony PS-LX120D User manual

PS-LX120D
SERVICE MANUAL
* PS-LX120D is similar to the earlier PS-LX100 (US model).
* Refer to the PS-LX100/LX285 service manual for information not contained in
this service manual.
9-956- 612-11
PARTS LIST (The difference between PS - LX100 and PS- LX120D)
PS-LX100 PS-LX120D
Page No. Part No. Part No. Description
4-895-830-01 SPINDLE ASSY
SPINDLE
4-896-543-01 CABINET, MAIN
X-4895-412-1 COVER ASSY, DUST
4-896-321-01 HINGE ASSY
4-896-322-01 | STOPPER, DUST COVER
3-753-171-21 | MANUAL, INSTRUCTION
*4-944-580-01 INDIVIDUAL CARTON
*4-896-307-01 CUSHION(R)
*4-896-308-01 CUSHION(L)
34 4-895-493-01
4-896-353-01
3-786-002-21
*4~896-319-11
8 *4~-896-309-01
*4-896-310-01
- Items marked “:*” are not stocked since they are seldom
required for routine service. Some delay should be
anticipated when ordering these items.
US Model
STEREO TURNTABLE SYSTEM
SONY.
Sony Corporation
Audio Group
English
91F1632-1
Printed in Japan
© 1991.6
Published by Customer Relations and Service Group

SEU ornate rey Se See
SERVICE MANUA
Photo:
PS-LX285: This set is the turntable system section in SEN 280.
SPECIFICATIONS
Turntable
Platter 30cm (12 in.)
US model: Plastics
Others: aluminium-alloy diecast
Motor DC servo motor
Drive system Belt-drive
Speed 33'/, rpm, 45 rpm
Signal-to-noise ratio
65dB (DIN-B)
Automatic system Return, reject
Tonearm type Statically balanced
Cartridge
Type Moving magnet type
Stylus Sony ND-155G (0.6 mil diamond)
Dimensions US model:
Approx. 430x95 x 350mm (w/h/d)
(17x34 x137%% inches)
Others model:
Approx. 430 x 105x350mm (w/h/d)
(17x414 x13% inches)
Weight US model:
Approx. 2.5kg (5lb 9oz) net
Others model:
Approx. 3.3kg (7lb 50z) net
Power Requirement (PS-LX100 model only)
US, Canadian model: 120V AC, 60Hz
AEP model: 220 V AC, 50/60 Hz
UK model: 240V AC, 50/60 Hz
E model: 110—120 or 220—240V AC
adjustable, 50/60 Hz
PS-LX285.
US Model
Canadian Model
AEP Model
UK Model
E Model
PS-LX100
US Model
Canadian Model
E Model
[talan Model
PS-LX285
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK A OR 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 COMPOSANT AYANT RAPPORT
A LA SECURITE!
LES COMPOSANTS IDENTIFIES PAR UNE MARQUE /\
SUR LES DIAGRAMMES SCHEMATIQUES ET LA LISTE
DES PIECES SONT CRITIQUES POUR LA SECURITE
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIECES SONY DONT LES
NUMEROS SONT DONNES DANS CE MANUEL OU
DANS LES SUPPLEMENTS PUBLIES PAR SONY.
STEREO TURNTABLE SYSTEM
ON Y.

PS-LX100/LX285
LX285 Model only
REPEAIRING PRECAUTION
[To supply B+ voltage]
regulated DC
3P
connector
power
supply
d
The
power
of
this
unit
is
fed
from
TA-AX285.
o
Core
Cok
Because of this, connect the regulated power supply
as illustrated right when this unit alone operates.
MODEL IDENTIFICATION
— Specification Label —
SONY. MODEL NO. PS-LX100
STEREO TURNTABLE SYSTEM
LLL
SERIAL NO.
MADE IN TAIWAN
4-896-283-01
PS-LX100 Model only
with white stripe
PS-LX100 Model only:
SAFETY CHECK-OUT (US, Canadian Model)
After correcting the original service problem,
perform the following safety check 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). Leakage
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 instru-
ments.
2. A battery-operated AC milliammeter. The Data
Precision 245 digital multimeter is suitable for
this job.
US, Canadian model: AC 120V 60Hz 4W
AEP model: AC 220V 50/60Hz 2W
UK model: AC240V 50/60Hz 2W
E model: AC 110 — 120/220 — 240V 50/60Hz 4W
3. Measuring the voltage drop across a resistor by
means of a VOM or battery-operated AC volt-
meter. 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 passive 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
voltmeter
(0.75 V)
= Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.

LOCATION AND FUNCTION OF CONTROLS
[1] 45-rpm adaptor
[2] Tonearm
[3] w/¥ (cueing) lever
Used to lift or lower the tonearm.
[4] REJECT button
To stop during play, press this button.
[5] Turntable platter
[6] Arm rest
Cartridge
SPEED selector
For 45-rpm records, depress the selector. For 33-rpm records,
press it again.
SERVICING NOTE
M101
Others mode!
US meadel only
| PS-LX100/LX285
TURNTABLE ASSEMBLY
rubber mat
: -|> } platter
4 an -_ US model: plastics
~ Others: — aluminium-alloy
———
diecast
US model
Hook the belt on the motor pulley.
If the belt come off from the platter, replace it
with the glossy side outward.

PS-LX100/LX285
SECTION 1
ADJUSTMENTS
Speed Adjustment
Note: Be sure to perform 33-rpm adjustment before 45-rpm.
— Using a stroboscope board — — Using a test record —
1. Puta stroboscope board on the mat. 1. Puta test record (YFSC-16) on the mat.
2. Set the SPEED switch to 33. 2. Move the arm onto a-2 (3kHz) section and trace it.
Depress the lifter knob to make a lift-up mode and move the arm 3. Adjust M101(L) so that the frequency is 2,991 —3,009 Hz.
above to the outer most groove of a record. 4. Set the SPEED switch to 45.
Adjust M101(L) so that the striped pattern of stroboscope Adjust M101(H) so that the frequency is 4,038 —4,062 Hz.
board is stationary.
3. Set the SPEED switch to 45.
Adjust M101(H) in the same way.
Adjustment Location:
SPEED ADJUST
“—
7
‘HO 451m
! I
\ LO 33mm
Noe
go>
‘HO 45m
! 1
LO 33 rom
~ oe”
Automatic Return Position Adjustment
. Puta test record (YFSC-16) on the mat.
. Set the SPEED switch to 33 and move the tonearm on a return
check groove.
. Turn the Adjustment screw so that the tonearm starts to return ’
at count of 4 — 10 count increase count decrease
adjustment screw

2-1.
2-2.
and ea at ee fy carmen ea Sms mi ay a 5 a i a a a a a Caine Fei Se, ee, Ss a es
SECTION
2
DIAGRAMS
PS-LX100/LX285
US, Canadian,
AEP,UK MODEL
pal, (PSLXI00)
SCHEMATIC DIAGRAMS |
J
Dicil Saas genet ee Se ee
PHONO OUT MOTOR MIOI 1 | PT y
———
--
POWER
TRANSFORMER
|
L-CH
R-CH
Liyl
WHT
RED
|
_
11
AI
PIOI P201 I
'
!
!
0! 2 |
RS I I CNP |
Ps-Lxio0 [| : I
2
E
Move.
~s!
I
ps-Lx100
3
y
HL et mem |] |) Lib ene]
]
45 US, Canadian, AEP, UK MODEL (PS-LX 100)
!
cme]
Te
'
|
|
1
[POWER
BOARD]
aiueen
S80 etl, I Ge oe, Ee a Poy a ere aS Aaa it ae hy Ye ERENT
°
|
REPLACEABLE
_ : BUILT IN
TO |
ae | TRANSFORMER
CARTRIDGE %| MOTOR POWER
XL~155G
ie
:
WHEN
THE
ARM
IS
MOVED
INWARD
)
Daas
tent
perce
eles
Pe
yseet
ch
te
inhetns
cna!
Stans
eee
te
hos
|
; OFF: WHEN THE ARM RETURNS ON THE REST
Note: Note:
The components identi- | Les composants identifiés par
fied by mark or dot- | une marque sont critiques
ted line with mark pour la sécurité.
are critical for safety. Ne les remplacer que par une
Replace only with part | piéce portant le numéro spéci-
number specified. fié,
PRINTED WIRING BOARDS
th a een pes Ses Ra ea ty ret Nee, ees ed ae Nef ee Se a antiemetics ee 1
PS-LX285 alist
PHONO OUT CONNECT TO TA~AX285 |
— om
~CH RCH Bt
ie GND(I2V) | CNP I PS -LXI00
3P CONNECTOR |
WHT st |
BLK
(WITH WHITE STRIPE) | =
BLK (NOT CONNECTED) | cS
|
|
CABINET
|
| ly
|
|
|
|
|
BLK |
TO HEAD SHELL @—® LUG TERMINAL PLATE BL |
(WITH WHITE STRIPE)
L-CH J
TO CAR TRIDGE eo
RCH
eesSFseseesesesesesa‘_SsSSssSSS
ee
j | WHT/BLU E MODEL |
ci 4 | Saas
| WHT/RED POWER
:
|
SwW3
BOARD
Swi
ss
|
pace
YW | !
| 220V ___ IOV
MOTOR POWER SWITCH | 2h0N ee WHT/RED |
|
oa
ear
Ce
precept
|
PS=LXI00
al ‘i | EXCEPT
| E MODEL
| WHT |
|
| l
| |
WHT/BLU
rT LUG PI
aa
WH
LATE
sii
|
RED eo ee
|
2 o. |
3] O |
SPEED
|
BLU
ORG
SWITCH
M101
RED HO
WHT
RED LO

PS-LX100/LX285 |
SECTION 3
EXPLODED VIEW AND PARTS LIST
NOTE:
@ The mechanical parts with no reference
number in the exploded views are not
supplied.
@ The construction parts of an assembled
part are indicated with a collation num-
ber in the remark column.
@ Items marked “*” are not stocked since
they are seldom required for routine
service. Some delay should be antici-
pated when ordering these items.
Due to standardization, parts with part
number suffix -XX and -X may be dif-
ferent from the parts specified in the
components used on the set.
Color Indication of Appearance Parts
Example:
(RED) ...KNOB, BALANCE (WHITE)
t <
Cabinet's Color Parts’ Color
specified.
sécurité.
25 BE ons US, Canadian E model
proce
UK model
The components identified by
mark or dotted line with mark
are critical for safety.
Replace only with part number
Les composants identifiés par une
marque sont critiques pour la
Ne les remplacer que par une
piéce portant le numéro spécifé.
1LX-100
|
|
|X 907
903
“__
_CNP!
=i
model
AEP model

| PS-LX100/LX285
Note IT: Italian
No. Part No. Description Remarks No. Part No. Description Remarks
1 4-909-060-01 TURNTABLE 33 7-685-648-79 (LX100)...SCREW +BTP 3X12 TYPE 2 N-S
4-895-491-01 (US)...TURNTABLE, GEAR 34 4-895-493-01 (US)... SPINDLE
35 4-895-802-01 BUTTON, SPEED
2 4-877-807-11 SHEET, TURNTABLE 38 *4-895-804-01 ARM, SLIDE
4-895-496-01 (US)...MAT, TURNTABLE 39 4-896-302-01 SPRING, SLIDE
3 4-895-490-01 (US)...CLIP, SPINDLE 40 4-895-807-01 WASHER
4 4~895-492-01 BELT 43 7-685-104-19 SCREW +P 2X6 TYPE2 SLIT
5 *4-896-298-01 REST, ARM 44 *4-895-808-01 ROD, CUE
6 4-895-830-01 (EXCEPT US)...SPINDLE ASSY 45 4-895-809-01 LEVER, CUE
46 *4-896-304~01 LEVER, TRIP
7 ~=-*4-895~-404-01 SPINDLE WASHER
8 4-895-413-01 SCREW 47 *4-896-305-01 ROD, TRIP
9 4-895-414-01 GROMMET (A) 48 *4-895-812-01 SHAFT, LIFT
49 4-895-813-01 SPRING, LIFT
10 *4-896-300-01 (LX285)...CABINET, MAIN 50 4-895-814-01 FORK, LIFT
*4-896-330-01 (LX100)...CABINET, MAIN 51 7-624-104-04 STOP RING 2.0, TYPE -E
11 4~-895-430-01 SCREW (7-BID 3008 ZN3A 12D) 52 4-895~-818-01 CAM, ADJUSTMENT
12 4-896-294-01 SCREW (7-BID 3006 ZN3A 10D) 53 4-895-819-01 SPRING, ADJUSTMENT
13 7-685-647-79 SCREW +BTP 3X10 TYPE2 N-S 54 4-895-817-01 LINK, RETURN
14 4-895-024-01 (LX100,LX285:US)...POLY WASHER 58 4-895-474-01 CARTRIDGE COVER
59 1-549-132-11 STYLUS (ND-155D)
15 *4-896-282-01 (LX285)....... LABEL, MODEL NUMBER (U2)
*4-896-283-01 (LX100:US,Canadian) 60 4-896-293-01 SCREW ASSY
.. LABEL, MODEL NUMBER (U2) 61 4-896-296-01 WASHER, POLYETHYLENE
*4-896-284-01 (LX100:AE2)...LABEL, MODEL NUMBER (AE2) 62 *4-896-297-01 HOLDER; SWITCH
*4-896-285-01 (LX100:UK)....LABEL, MODEL NUMBER (UK) 63 7-685-535-19 SCREW +BTP 2.6X10 TYPE2 N-S
*4-896-286-01 (LX100:E).....LABEL, MODEL NUMBER (E) 64 7-685-646-79 SCREW +BTP 3X8 TYPE2 N-S
*4-896-287-01 (LX100:AE1)...LABEL, MODEL NUMBER (AE1)
903 1-558-595-11 CORD, CONNECTION (P101,P201)
16 4-895-435-01 FOOT 904 7-623-512-01 LUG TERMINAL 1L4P
17 X-4895-412-1 (LX100:Canadian,AEP,UK,E, 905 *4-896-325-01 (LX100)...PC BOARD, POWER
LX285: Canadian,E,IT)...COVER ASSY, DUST 906 A*4-896-338-01 (LX100)...WIRE, CONNECTOR
(AC CONNECTION)
18 4~895-495-01 GEAR, CAM, CLUTCH 907 A.1-526-565-12 (LX100:E)...AC PLUG ADAPTOR
_ 19 X-4895-411-1 ARM ASSY CNJ1 1-558-596-11 (LX285)...CORD, CONNECTION (3 CORE)
20 4-895-850-01 SPRING, REJECT (SYSTEM CONTROL )
21 *4-895-836-01 WIRE, REJECT
CNP1 A\.1-558-945-11 (LX100:US,Canadian)...CORD, POWER
22 *4-895-837-01 LEVER, REJECT CNP1 A.1-558-944-11 (LX100:AEP)..........-CORD, POWER
23 4-896-311-01 PANEL, FUNCTION CNP1 A.1-558-946-11 (LX100:UK)............CORD, POWER
24 4-895-839-01 BUTTON, REJECT CNP1 A.1-551-472-23 =(LX100:E)..........08. CORD, POWER
25 *4-895-840-01 HOLDER, REJECT
M101 4-896-306-01 CASE, MOTOR
26 4-896-321-01 (LX100:Canadian,AEP,UK,E ,LX285: Canadian,
E,IT)...HINGE ASSY PT1 A.1-449-392-11 (LX100:US,Canadian)...POWER TRANSFORMER
27 4-896-322-01 (LX100:Canadian,AEP,UK,E ,LX285: Canadian, PT1 A.1-449-393-11 (LX100:AEP).........4. POWER TRANSFORMER
E,1IT)...STOPPER, DUST COVER PT1 A.1-449-394-11 (LX100:UK).... ee ee eee POWER TRANSFORMER
PUL. Ais 1-899=395=11 AL XIO02E) ois ec cuects POWER TRANSFORMER
28 4-895-443-01 W GEAR 0003 ZN3A
29 4-896-320-01 HEAD ASSY, PU SW1 4~896-303-01 SELECTION, LEAF (POWER)
30 4-895-445-01 NUT 50 ZN3A Swe 4-896-301-01 SELECTION, PUSH (SPEED 33/45)
31 7-621-773-95 (LX100:E)....SCREW +B 2.6X6 SW3 A.1-571-083-11 (LX100:E)...SLIDE (VOLT SELECTION)
32 *4-896-299-01 CABINET, LOWER
Note:
Les composants identifiés par
sont critiques
Note:
The components identi-
fied by mark or dot-
ted line with mark
are critical for safety. Ne les remplacer que par une
Replace only with part | piéce portant le numéro spéci-
number specified. fié.
une marque
pour la sécurité.

PS-LX100/LX285
SECTION 4
ELECTRICAL PARTS LIST
NOTE:
e@ Due to standardization, replacements in the parts CAPACITORS: The components identified by
list may be different from the parts specified in
the diagrams or the components used on the set.
e items marked “x” are not stocked since they
items.
MF: wF, PF: puF.
RESISTORS
e Allresistors are in ohms.
are seldom required for routine service. Some e@ F: nonflammable
delay should be anticipated when ordering these
COILS
@ MMH: mH, UH: wH
e If there are two or more same circuits in a set
such as a stereophonic machine, only typical
circuit parts may be indicated and capacitors and
resistors in other same circuits may be omitted.
Ref.No. Part No.
903 1-558-595-11
904 7-623-512-01
905 *4-896-325-01
906 A*x4-896-338-01
907 A\.1-526-565-12
C1 1-124-480-51
CNJ1 1-558-596-11
CNP1 A\.1-558~945-11
CNP1 A. 1-558-944-11
CNP1 A.1-558-946-11
CNP1 A.1-551-472-23
D2
D3
D4
D5
8-719-200-02
8-719-200-02
8-719-200-02
8-719-200-02
M101 4-896-306-01
PT1
PT1
PT1
PT1
A.1-449-392-11
A.1-449-393-11
A.1-449-394-11
A.1-449-395-11
SWi
SW2
SW3
4-896-303-01
4-896-301-01
A.1-571-083-11
9-953-147-11
Description
CORD, CONNECTION (P101,P201)
LUG TERMINAL 1L4P
(LX100)...PC BOARD, POWER
(LX100)...WIRE, CONNECTOR
(AC CONNECTION)
(LX100:E)...AC PLUG ADAPTOR
(LX100)...ELECT 470MF 25V
(LX285)...CORD, CONNECTION (3 CORE)
(SYSTEM CONTROL }
(LX100:US,Canadian)...CORD, POWER
(LXPOOS AEP) scic:ccwie oieie's CORD, POWER
(LX100:UK).......++++-CORD, POWER
(EXLOOSE ia ecacinewates CORD, POWER
(LX100)...DIODE 10E2
(LX100)...DIODE 10E2
(LX100)...DIODE 1052
(LX100)...DIODE 10E2
CASE, MOTOR
(LX100:US,Canadian)...POWER TRANSFORMER
(LXIOO:AEP).. ccc ceeeee POWER TRANSFORMER
(LX100:UK)...... eiieeve POWER TRANSFORMER
CLXTOO? E lisesearettewee.ces POWER TRANSFORMER
SELECTION, LEAF (POWER)
SELECTION, PUSH (SPEED 33/45)
(LX100:E)...SLIDE (VOLT SELECTION)
SEMICONDUCTORS
In each case, U: yw, for example:
UA...: wA..., UPA...: uPA...,
mark or dotted line with mark
are critical for safety.
eplace only with part number
specified.
Les composants identifiés par une
marque sont critiques pour la’
sécurité,
Ne les remplacer que par une
piéce portant le numéro spécifié.
UPC...: wPC, UPD...: uPD...
ACCESSORY & PACKING MATERIAL
3-550-458-01
3-703-450-01
3-703-079-21
3-786-002-11
3-786-002-21
3-786-002-31
3-786-002-41
*4-895-829-01
4-895-846-01
4-895-847-01
4-895-848-01
4-895-481-01
*4-896-307-01
*4-896-309-01
*4-896-308-01
*4-896-310-01
Sony Corporation
Audio Group
— g—
(LX100:E)...LABEL, CAUTION, POWER SELECTOR A
(LX100:US)... INSTRUCTION
(LX100:UK)...LABEL, CAUTION (BACK)
(LX100:AEP,UK,E)...... MANUAL, INSTRUCTION
(LX100:US,Canadian)...MANUAL, INSTRUCTION
(LX100:Canadian)...... MANUAL, INSTRUCTION
(LXLOOZAEP)... cc ceeee MANUAL, INSTRUCTION
PLATE, CONTROL, SPEED
POLYETHYLENE BAG
HOLDER, TURNTABLE
PLATE, TOP
(LX100)...ADAPTOR, 45
(LX100: Canadian, AEP,UK,E,LX285:E)
CUSHION (RIGHT )
(LX100:US,LX285:US)...CUSHION (RIGHT)
(LX100: Canadian, AEP,UK,E,LX285:E)
. «CUSHION (LEFT)
(LX100:US,LX285:US)...CUSHION (LEFT)
English
88D0696-1
Printed in Japan
© 1988.4
Published by A/V Enginnering Service Dept.

SON Y.
SERVICE MANUAL
CORRECTION-1
Correct your service manual as shown below.
—_ : indicates corrected portion.
PS-LX100/289
US Model
Canadian Model
AEP Model
UK Model
E Model
INCORRECT
-
iz
CORRECT
Ref.No. Part No. Description Remarks
Ref.No. Part No.
e
Description Remarks
7
905
4-896§-325-01
(LX100)-+-
PC
BOARD,
POWER
905
4-896-339-01
(LX100)---
PC
BOARD,
POWER
English
: 92K0699-1
Sony Corporation Printed in Japan
9-953-147-91
Audio
Group
©
1992.11
Published by Audio Corporate Planning Group