Technics SLXP 240 Service Manual

Page 1

ORDER NO. AD960409508

Service Manual

@GOMPAGT m MA SH

DIGITAL AUDIO

TRAVERSE DECK: RAEO141Z MECHANISM SERIES

I SPECIFICATIONS
IAudio
No. of channels: 2 channels (left and right, stereo)

Output voltage: 0.6 V (50 k9) is 3 5 stereo mini jack
Frequency response: 20~20, 000 Hz (+0.5 dB, ~1. 5 dB)
SIN: more than 94 dB

Wow and flutter: Below measurable limit

DA converter: 1 bit, MASHe'
Headphone output level: max. 9 mw+9 mW/lssz (variable)
stereo minijack ¢ 3.5

mulll stage noise shaping

*-

Digital filter: 8 times over sampling
ISignal Format
correctlon system: Technics New
Super Decoding Algorithm
IPickup
Type: One beam
Light source: Semiconductor laser
Wavelength: 780 nm
Lens: Glass pressed lens
I Playing time;
[When used in hold Anti-shook
mode. at 25°C Baner'es sed OFF/0N
temperature and on flat About 3 hours/
and stable surface] :echairgeable About 2 hours
atter es 30 minutes
Panasonic About 10 hours/
alkaline dry cell About 7 hours/
batteries 30 minutes

The play time may be less depending on
the operating conditions

Recharging time; About 3 hours

Technic§

Portable CD Player

SL-XP24O

Colour

(K)...Black Type
Area

Suffix for
Model No.
(E) Europe.
(EB) Great Britain.
(EG) Germany and Italy.

Asia, Latin America, (K)
(GO) Middle Near East and
Africa.

(GN) Oceania.

Area Colour

IGeneral
Power requirement: AC; with an included panasonic AC
adaptor
RFEA401E-28 (E, EG)
RFEA404B-1W (EB)
RFEA4OSZ-S (GO)
RFEA403A~S (GN)
Batteries; DC 3 V (two M" size batteries,
not included)
(Panasonic REP/LEG or equivalent, not
included)
Rechargeable Batteries; DC 2.4 V with
an optional Panasonic Rechargeable
Batteries (SH-CD380 set of 2)
Car Battery; with an optional Pansonic car
adaptor (SH-CD09)
Dc IN: DC 4.5 v M
Operation temperature
range: (PC-40°C
Rechargeable
temperature range: 5°C -40°C
Power supply: DC 4.5 V
Power consumption:
Using AC adaptor; 5.5 W/5.7W(Anti-shock OFF/ON)
Dimensions (WXHXD): 128x29x140 mm
Weight: 225 g without batteries

270 g with batteries
*These specifications were measured In the anti-shock OFF mode.

Note: Design and specifications are subject to change without notice.
Weight and dimensions are approximate.

©1996 Matsushita Electric Industrial 00., Ltd.
All rights reserved. Unauthorized copying and
distribution is a violation of law.

Page 2

SL-XPZIIBJ

A WARNING
This service information is designed for experienced repair technicians only and is not designed for 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.

ICONTENTS

PRECAUTION OF LASER DIODE
ACCESSORIES .........................
LOCATION OF CONTROLS
POWER SUPPLY PREPARATIONS
ACCIDENTAL OPERATION PREVENTION FUNCT IO
SEQUENTIAL PLAY ..................................................
USING THE UNIT WITH OPTIONAL ACCESSORIES .
CAUTIONS .................................................................
HANDLING PRECAUTIONS FOR TRAVERSE DECK.
OPERATION CHECKS AND MAIN

COMPONENT REPLACEMENT PROCEDURES
CHECKING THE OPERATION PROBLEMS ON

THE TRAVERSE DECK (OPTICAL PICKUP) ........................... 12

'U
.m
ID

ID

auwmhwwwn

..9~11

IPRECAUTION OF LASER DIODE

CAUTION:
lens.
Wave length: 780 nm

Page
AUTOMATIC ADJUSTMENT RESULTS
DISPLAY FUNCTION (SELF-CHECK FUNCTION) ............ 13, 14
MEASUREMENTS AND ADJUSTMENTS .
BLOCK DIAGRAM.....
SCHEMATIC DIAGRAM
PRINTED CIRCUIT BOARD AND
WIRING CONNECTION DIAGRAM..
REPAIRING THE PRINTED RESISTOR
TERMINAL GUIDE ................
REPLACEMENT PARTS LIST.
CABINET PARTS LOCATION .
REPLACEMENT PARTS LIST .
PACKAGING
RESISTORS AND CAPACITORS ................................................... 36

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

Maximum output radiation power from 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. it was already adjusted.

3. Do not look at the focus lens using optical instruments.

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

ACHTUNG: Dieses Produkt enthali eine Laserdiode.

Lasereinheit abgestrahlt.
Wellenlange: 780 nm

lm eingeschalteten Zustand wird unsichtbare Leserstrahlung von der

Maximale Strahlungsleistung der Lasereinheit: 100 uWNDE

Die Strahiung an der Lasereinheit ist ungefahrlioh, wenn folgende Punkte beachtet werden:

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

3. Nicht mit optischen lnstrumenten in die Fokussieriines blioken.

4. Nicht ilber Iangere Zeit in die Fokussierllnes blicken.

ADVARSEL: ldette a apparat anvendes laser.

mm Avatlaessa 1a DANGER-invisible laser

CAUTION!
THIS PRODUCT UTILIZES A LASER.

WINNING] Osyrillg
launtrfilnln nénleima
flalirllpjma null
spinenaruvkn plad.
Batrakla el strA an.

ADVERSELI Usynllg
Inlayslréllng n5! fleksnl
times on sikkertieqsltls
brvles. Unnya
altspnnerlug lnr stralan.

(T uotteen pohjassa)
(Apparatens underside)
(onduktets underside)

sunlalukilus QIIIIEILSESSE radiation whan upen .
gzéflailllflzf'm agitatemissiles
iaualsos lessen. llglla'é'liiiiiii aavnrns ER UDEAF rummon.

unnaA unsermss FDR smiluua.

(Bottom ol the product)

(Fasal under apparalet)

Parts interior dei aparato

CLAS
LASER PRODUCT

Komponentensunderslde I-UOKAN 1 LASERLAITE

Produktets underside
KLASS1 LASER APPARAT
_ 2 _

Bottom ot the unit

USE OF CONTROLS OR ADJUST-
MENTS OR PERFORMANCE OF
PROCEDURES OTHER THAN THOSE
SPECIFIED HEREIN MAY RESULT IN
HAZARDOUS RADIATION EXPO-
SURE.

DO NOT OPEN COVERS AND DO NOT
REPAIR YOURSELF. REFER SERVIC-
ING TO QUALIFIED PERSONNEL.

Marking sign is located on bottom of the
unit.

Page 27

SL-XP240

ITERMINAL GUIDE
0 IC501 (MN662745RPC): Servo processor/Digital signal processor/Digital filter/D/A converter
Pin "0 Pin |IO
No. Mark Dlvlslon Function No. Mark Division Function
1 BCLK 0 Serial bit clock output 22 TVD o Traverse drive signal
2 LFlCK 0 UR discriminating signal output 23 PC 0 (Twig?) motor drive signal
1 Turntable motor drive signal
3 SRDATA 0 Serial data Signal output 24 ECM O (Forced m o d e)
. . . . . Turntable motor drive signal
4 DVDDi | Power supply (dig Ital crrcurt) terminal 25 E65 0 (Servo error signal)
5 DVss1 - GND (digital circuit) terminal 26 KICK 0 Kick pulse output
_ Digital audio interface signal . . .
6 TX (Not u s e d, open) 27 TRD 0 Tracking drive signal output
7 MCLK 1 Command clock signal 28 POD 0 Focus drive signal output
. DIA drive output (TVD, ECS, TFiD,
8 MDATA | Command data Signal 29 VREF I F OD, FB AL, TB AL)
normal voltage input terminal
9 MLD l Command load si nal L' : LOAD
g ( ) 30 FE AL 0 Focus balance ad). output
(Not used, open)
Sense signal (OFT. FESL, NACEND,
10 SENSE - NAJEND, POSAD, SFG) ' . .
(Not used, open) 31 TBAL 0 Tracking balance adj. output
_ Optical servo condition Focus error signal
11 FLOCK (focus) (L" : lead»in) (Not used. open) 32 FE I (analog input)
_ Optical servo condition (tracking) Tracking error signal
12 TLOCK ("U : lead-in) (Not used, open) 33 TE I (analog input)
13 BLKCK o Sub-code block clock (f=75 Hz) 34 RFENV | RF envelope signal
14 SQCK I Sub-code Q register clock 35 VDET | Oscillation det signal (H" :det.)
15 SUBQ O Sub-code Q data 36 OFT R I Off track signal (H" : Off track)
Muting input ("H" : MUTE) - . .
16 DMUTE I (Not used, connected to GND) 37 TFiCFlS I Track cross srgnal input
Status signal (CRC. CUE, CLVS, . - u n .
17 STAT O I'I'STOP, FCLV, SQCK) 38 RFDET l RF detection Signal ( L . detection)
. .. ,, _ Dropout detection signal
18 RESET 1 Reset Signal ( L . reset) 39 BDO I (H" : dropout)
19 SMCK 0 System clock (t=4.2336 MHz) 40 LDON 0 Laser power control ("H" : ON) .
Frequency division clock signal Tracking error shunt output
20 PMCK O _ 1 = 41 TES - (H : dropout)
(f_ 1.92 XCK 88'2 kHz) (Not used. open)
21 TRV O Traverse servo control 42 PLAY - Play srgnal ( H : play)

(Not used, open)

_27_

Page 29

o lC11 (AN8788FB ): Dc-DC converter & motor drive

,SL'XP24O

Pin l/O Pin l/O
No. Mark Division Function No. Mark Division Function
1 RESET 0 Reset signal input terminal 23 TR-
0 Tracking coil drive output terminal
2 BED 1 Dead lime Input terminal 24 TR+
3 OUT 0 DC-DC converter output terminai 25 F0-
0 Focus coil drive output terminal
4 FB 0 Error amp output terminal 26 FO+
5 IN I Error amp input terminal 27 _
- PGND - GND terminal
28
Remote control interface output
6 BOUT 0 terminal
29 SP+
7 SGND - GND terminal 0 Spindle motor drive output terminal
30 SP-
8 SPRO l Short protection input terminal
31 TRV+
9 CT I Triangular wave oscillator terminal 0 Traverse "0 drive 0W)t terminal
32 TRV-
10 AREF O 1/2 AVDD output terminal
33 ICNT l Rechargeable current setting terminal
11 SVcc | Power supply terminal
34 MRST O Muting reset output terminal
12 GRIP l Sgsaecflitloerrconnectlon terrmnal for
35 VSEN I Empty det. input terminal
13 Avon O Ripple filter output terminal
36 EMPTY 0 Empty det. output terminal
14 DRVcc I Power supply terminal
37 PVcoi l Power supply terminal
15 VFIEF I 1/2 VCC input terminal
38 CLK | External synch..clock input terminal
16 INFO I Focus coil drive input terminal
39 START i Start oscillator input terminal
17 INTR I Tracking coil drive input terminal
40 POWER l Power ONI OFF input terminal
18 LDON I Laser ONI OFF drive control terminal
41 PVcoZ l Power supply terminal
19 lNSP I Spindle motor drive input terminal Ft h abl d
. 42 1 OUT 0 tag; i rage e an battery det.
20 PC I Spindle motor drive ON/OFF control
terminal .
43 DFIGND - GND terminal
21 INTV I Traverse motor drive control terminal
44 FIN I Remote control signal input terminal
22 TRVSTOP I Traverse motor ON/ OFF control

terminal

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