Technics SLS 125 Service Manual

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ORDER NO. A0970305008

Service Manual

MASHK

mum - stage noise alanine

X MASH is a trademark of N'll'.

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DIGITAL AUDIO

Areas for Every Model.
SL-5120 .....E, E6, CC, GN (H)
E, EG (A)

sr.-s125 ..... E, as (H)

Traverse Deck: RAE01422 Mechanism Series

Specifications
Audio
No. of channels: 2 channels (left and right, stereo)
Output voltage: 0.6 V (50 kohm) diameter 3.5 stereo mini jack
Frequency response: 20 ~ 20,000 Hz (+0.5 dB, ~1.5 dB)
SIN: more than 94 dB General
Wow and flutter: Below measurable limit
DA converter: 1 bit, MASH

Portable CD Player

SL-S120

Colour (H) ..... Gray Type

Colour (A) . Blue Type
Colour (H) ....... Gray Type
Areas
E . Europe, Poland and Russia.

EG . . Germany and iiaiy.

GC ........... Asia, Middle East and Africa,
Latin America.

GN ........... Oceania.

Panasonic Alkaline dry cell batteries:(LFi6, apes.) : Approx. 10h
Rechargeable batteries (When rechargeable 3 hours.) : Approx. 3h
The play time may be less depending on the operating conditions. .

Operation temperature range: 0 - 40 degree
Rechargeable temperature range: 5 - 40 degree

Headphone ouipui ievéii max.9 m"vv'+9 mW/ifi uixrn (variable) Power supply: BC 4.5 v
stereo mini jack diameter 3.5 Power consumption:
Digital filter: 8 times over sampling Ac adaptor; 5.5 W
Battery (Dc 3V); 0.6 W
Signal Format When recharging; 3.3 W
Correction system: Technics New Dimensions: 128(Wide)l28.D(High)/144(Depth)mm
Super Decoding Algorithm Weight: 220 9 without batteries
265 g with batteries
Pickup
Type: One beam Note: Design and specifications are subject to change without
Light source: Semiconductor laser notice. Weight and dimensions are approximate.
Wavelength: 780 nm
Lens: Glass pressed lens
Playing time

(When used in hold mode, at 25 degree temperature and on flat
and stable surface.)

A WARNING

This service information is designed for experienced repair technicians only and is not designed tor use by the general public. it does not
contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.

Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or
repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

Panasonic®

© 1997 Matsushlte Electric Industrial Co., Ltd.
All rights reserved. Unauthorized copying
and distribution is a violation of law.

Page 2

SL-S120/SL-S125

I Contents

Precaution of Laser Diode.
Location of Controls
Accessories .........
Power Supply Preparation
Accidental Operation Prevention Function
Troubleshooting Guide
Sequential Play .......
Using the Unit with Optional Accessories
Other Play Methods
Cautions...
Handling Precautions tor Traverse Dec
Operation Checks and

Main Component Replacement Procedures
Checking the Operation Problems on

the Traverse Deck (Optical Pickup) .......... 12

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IPrecaution of Laser Diode

CAUTION:
lens.
Wave length: 780 nm '

Automatic Adjustment Results
Display Function (Seif-check Function).
Measurements and Adjustments
Block Diagram
Type illustration of 10's. Transistors and Diodes
Schematic Diagram
VWring Connection Diagram ..
Terminal Function of 10's
Printed Circuit Board and
Replacement Parts List (Electrical).
Resistors and Capacitors
Cabinet Parts Location
Replacement Parts List (Cabinet. Packing.
Accessories and Grease or Jig/Tool)
Packaging ............................... . ...........

This product utilizes a laser diode with the unit turned on", invisible laser radiation is emitted from the pickup

Maximum output radiation power trom pickup: 100 pWNDE

Laser radiation from the pickup lens is safety level, but be sure the followings:

1. Do not disassemble the optical pickup unit, since radiation from exposed laser diode is dangerous.

2 Do not adjust the variable resistor on the pickup unit.
3. Do not look at the focus lens using optical instruments.
4

It was already adjusted.

Recommend not to look at pickup lens for a long time.

ACHTUNG:
Lasereinheit abgestrahlt.

Wellenlange: 780 nm

Dieses Produkt enthalt eine Laserdiode. lm eingeschalteten Zustand wird unsichtbare Leserstrahlung von der

Maximale Strahlungsleistung der Lasereinheit: 100 pWNDE

Die Strahlung an der Lasereinheit ist ungetahrlich, wenn folgende Punkte beachtet werden:

1. Die Lasereinheit nicht zerlegen, da die Strahlung an der freigelegten Laserdiode getahrlich ist.
2. Den werkseitig justierten Einstellregler der Lasereinhit nicht verstellen.

3. Nicht mit optischen Instrumenten in die Fokussierlines blicken.

4. Nicht fiber langere Zeit in die Fokussierlines blicken.

ADVARSEL: l dette a apparat anvendes laser.

CLASS 1
LASER PRODUCT

CAUTION!

THIS PRODUCT UTILIZES A LASER.

USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PRO'
CEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN
HAZARDOUS RADIATION EXPOSURE.

DO NOT OPEN COVERS AND DO NOT REPAIR YOURSELF. REFER
SERVICING T0 QUALIFIED PERSONNEL.

Marking sign is located on bottom of the unit.

WARNING:

TO REDUCE THE RISK OF FIRE,
ELECTRIC SHOCK 0R PRODUCT
DAMAGE, DO NOT EXPDSE THIS
APPLIANCE T0 RAIN, SPLASH<
ING, DRIPPING OR MOISTURE.

ntfinwuimfl warm

(Bollum uI product)

(Pasai under apparatat)

(Tuotleen pohjassa)

(Appaierens underside]

leduklelS underside)

(Unlerselie des Gerates)

H

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Page 4

SL-slzoISL-sulii

For areas except Continental Europe:
Al) adaptor

Belore use

Make sure the presel voltage oi your AC adap-
lur tits to your locul vullage befm's plugging it
inlo the AC pawercutlet. lrit duen't, turn the
AC linemllage seleetar with a screwdriver so
that it corresponds to your loal voltage. iii the
voltage adjuster is switched to OFF, the AC
adaptor ls ertectively dismnnected {ruin the
AC powar outlet) El

it the power plug will not fit your socket, use
the power plug adaptur. E

How In use the AC adapter

To connect the AC adapter, refer to lnwer
Supply Preparatiuns" (page 2).

l Accidental Operation Prevention Function

This lunrlion cruises the unit L ignorecltnrk, To use lhe accidental operation
u. dental hullnn preset-e rrhe disc lid tan still prevention function

be Fm"d d "5 Set HOLD in the HOLD position.

- ~ - .Lm ' d Indication
The misoperailon prevention thn'the unit is in link! status, prfissing any

function PIEVEHIS the following: npetulinn hultnn uhrrthan the OPEN billion)
Ilmeering on lhe unit amidenlnlly (which can (an; - lite indi lit," '5, ,I a" to appear cm the
muse the hulleries in go dead). display.
Ollat being all all unexpectedly in the middle When the unit 5 powered on
n 9? The "no .' J" ind on appears Only when the

> ll hutlen is pressed

H0

127V -- ZZOV-ZADV

:1

OFF

, 9
: First, consult the table brittle. it the problem persists, contact the dealer l'xom whom you purchased
I the unit.
l
{3 Problem Check this
= _ cannot close cover. Is the disc properly secured in place?
] Cannul play discs. 15 the unit in hnld status?
I ols the disc pmpel'ly seamed in place?
| '15 there moisture condensatinn on the lens?
: lwsit tor about an hour and then try again.)
I Cannot remove dlsct Did you press the PUSH butmn to release the disc?
' Tracks on disc do not play in Is the RESUME, NORMAL, RANDOM (play mode switch)
order. starting wilh Illa lirsl slider in the NORMAL pusttiun?
nnatc
Cannot hear music-tun naisy, nHas earphones plug been inserted as inr as it wtll go?
_ ole earphones plug dirty?
I Seq U entl al Play Tv picture In dlsmrle¢ Are you using the unitbody mo neara TV or tuner? lit the
Radio reception ls noisy. Til orluner is rulinected to a Simple illdQGr antenna, connect
it to an ouldoor antenna.)

Following steps 1-6. m

@ Label side up

@ Truck number in play

@ Elapsed playing lime or each track

IPley slaps aummatkally when all the tracks
have been played.

-1f the unit has been rannectcd to the car
audio system, adjust t volume level be
tween rt and 6 on the unit, their adjust the vol-
ume level an the system.

To pause play E

has during pluy

To stop play

Press during play

® Total number attract-s

@ Total playing time

To turn off the unit E

Pras during slop mode

Skip lanyard/backward

(skip lunction) E

prose during play

Rapid toward/backward Removing discs [3 _

(search funcfion) E Alter the disc has slapped mlating. pres the AND P0_W6f 9H iunctlon . 3
press and hold auxin; Flash PUSH button to release the disc. lTo protect the Ii the unit is lult in step pr paused ahints
'Durins ngram play (See page I mm bub d neveropen lhe cuverwhileilia playing) fer emeImatelr m nunntes. the unit

mm; m we d m SE? forward Dr bark rugh powers itself off automatically in cgder m
the momma mums may; Nevcrituerltureign objects inlothe unilhody. Prevent the baflery imm "Inning dawns
a . _ .

IDuring random play (See page 4), the skip For your reference:
buttons :annotbe usethu skip back to trade rm a] 1 5E" indication
that were played previously In the random This ind

'on nppeilrs lot about so seconds If
SElUEHCE- the > It button is pressed when no disc is
During pmgram Play, tandem Play or 1 track loaded in the unit or ltthe dis: is not mmplele-
repent play (see page 4), seaeh operation is t, mien
limited to the current hank only. .. 3F E n n indication
This inditatiml appears for about to minutes
when the cover is opened. (However, lhein .
cation does not appear when the unit is pcw~
ereol elf.)

->-
I

atrium e

3.u.o.-.n.m »-
' , . e) o

Pom-Kr

Q ->:l
, U L
, ___...___-------- a-cgzco/AUX

traum' '

Backward direction Forward direction
Dixecclén de ten-«ea Direcdén de avance

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