Technics SLP 550 Service Manual

Page 1

ORDER NO. HAD8801021C0

Service Man

» COMPACT

DIGITAL AUDIO

Dolor

(S) SilverType
(K) Black Type

SPECIFICATIONS

I Audio

No. of channels:
Frequency response:
Output voltage:
Dynamic range:

SIN ratio:

Harmonic distortion:

Total harmonic distortion:

Wow and flutter:
Output impedance:
Load impedance:

Headphones output level:

I Signal Format
Sampling frequency:
D-A conversion:

l Pickup
Wavelength:

2 (left and right stereo)
2-20.000 Hz $0.3 dB
2 v (at 0 dB)

98 dB

105 dB

0.002% (1 kHz, 0 dB)
0.004% (1 kHz, 0 dB)
Below measurable limit
Approx. 6000

More than 10 kn

15 mW max. 32!) (adjustable)

44.1 kHz
16-bit linear

780 nm

Technics

_ Weight:

MAI-ulhltl SIII'VIGOI Company
50 Meadowiand Parkway.
sac-nous, New Jersey 01094

lelflnh salon Company,
DIVIIIon ol Mlllulhlll Electric

or Puerto Rico. Inc.

Ave. as Do lntanterla, KM 9.1
Victoria Industrial Park

Compact Disc Player

, Area,

Area ' »

Color '

. .Canada.
. .Continental Europe.
Italy.
. .. FR. Germany.
. .United Kingdom.
. .Belgium.
. .France.
. .Holland.
. .Australia.
Asia. Latin America,
Middle Near East,
, Africa and Oceania.
(K) (XB) ........ Saudi Arabia.
(K) (PA). . . . .Far East PX.
(K) (PE). . , . .European Military.
(K) (PC) ........ European Audio Club.

l Infrared remote-control transmitter
Dimensions (WXHXD): 61 X19X165 mm
Batteries: U." .4. "AAA batteries or IEC R03 or
equivalent (1 .5 Vx2)
1059 (including batteries)

Weight: _

I General

Power supply
For U.S.A. and Canada:

AC 60 Hz, 120 V

For Continental Europe: AC 50 Hz. 220 V i
For United Kingdom: AC 50 Hz, 240 V
For Australla: AC 50 Hz, 240 V I
For others: AC 50/80 Hz, 110 V/127 V/220 V/240 V I
Power consumption: _15 W
DimensionsMxHxD): 430x102><330 mm 3
4.8 kg

Specifications are subject to change without notice.
Weight and dimensions shown are approximate.
Measured by EIAJ (GP-307).

Panasonic Huwnil. Inc.
91~238. Knuhl Sl. Ew- Beach
P1). Box 714

Honolulu, Howell 968080774

MllIulhIIl Electric Trldlng Em, Ltd.
P.O. Box 288. Central Osaka Japan

Panasonic Tokyo om"

Mltouohit- Electric Trudlnn GIL, Ltd.
Sin Floor, world Trade Center Blda.,
No. 4-1. Hemomatsu-cno 2-Chomo.
MInato-ku. Tokyo IDS. Japan

Mat-whit: Electric

oi can-d- Limited

5770 Ambler Drive, Mlasinauqn.
Onllrlo, Lcw 2T3

Carolina, Fuerto Rico 00630

l C0 N TE NTS

Page Page
SAFETY PRECAUTION ......................... . 2 EXPLODED VIEWS ...... ' ............................ 23~2e
ACCESSORIES ................. 2 REPLACEMENT PARTS LIST . . 27~30
PRECALITION OF LASER DIODE 3 RESISTORS AND CAPACITORS . . ao~32
BEFORE USING THIS UNIT ..... , ................ . 3 PRINTED CIRCUIT BOARDS ......................... aa~3s
FLONT PANEL CONTROLS AND FUNCTIONS ..... . 4. 5 PRINTED CIRCUITBOARD AND
REMOTE CONTROL TRANSMII'I'ER ......... 6 WIRING CONNECTION DIAGRAM ...................... 37
CONNECTIONS . .v ............................. 6 TERMINAL GUIDE OF TRANSISTORS,
HANDLING PRECAUTIONS FOR OPTICAL PICKUP . . . . 7 IC'S AND DIODES .................................... 38
DISASSEMBLY INSTRUCTIONS ...................... 6~11 INTERNAL CONNECTION OF EL ........................ 38
MEASUREMENTS AND ADJUSTMENTS . 12~17 SCHEMATIC DIAGRAM
TERMINAL FUNCTION OF LSI ........... 16~22 BLOCK DIAGRAM . . .
PACKING ................................... 22

I SAFETY PRECAUTION (This "safety precaution" ls applied only In U.S.A.)

. Before servicing, unpiug the power cord to prevent an electric shock.

. When replacing parts, use only manufacturers recommended components for safety.

. Check the condition of the power cord. Replace if wear or damage is evident.

. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.

. Before returning the serviced equipment to the customer, be sure to make the following insulation resistance test to
prevent the customer from being exposed to a shock hazard.

OINSULATION RESISTANCE TEST

1. Unplug the power cord and short the two prongs of the plug with a jumper wire.

2. Turn on the power switch.

3. Measure the resistance value with ohmmeter between the jumpered AC plug and each exposed metal cabinet part, such as
screwheads antenna, control shafts, handle brackets. etc. Equipment with antenna terminals should read between 3M9
and 5.2M!) to all exposed parts. (Fig. A) Equipment without antenna terminals should read approximately infinity to
all exposed parts. (Fig. 8)

Note: Some exposed parts may be isolated from the chassis by design. These will read infinity.

01-5de

Antenna
terminal \

Exposed Exposed 5
metal metal k
part part
Ohmmeter Ohmmeter
(Fig.A) (Fig.8)

Resistance=3MQ--5.2MQ Resistance=ApproX co

4. If the measurement is outside the specified limits, there is a possibility of a shock hazard. The equipment should be
repaired and rechecked before it is returned to the customer. .

l ACCESSORIES

. OAC power supply cord .. . ., 1

SIM 684 [XA]
SJA173 [XL]

SJAI 75-1 [M]

SJA1 75 [MC]
SFDACOSGOZ [EK]
SJA183 [XB]

SJAi 87 other

0 Stereo connection cable .......... 1
SJ P2249-1

OC'oaxiaI cable . . . . 1
SJPDl 9

@Q ,

ORemote-control transmitter ...... 1
Black version: EUR64781...[M] and [MC] areas
EUFI64782...Other areas
Silver version: EUFI647$3

0 Batteries

UM-3 or lECFl6

Page 2

I PRECAUTION OF LASER DIODE

Caution: This product utilizes a laser diode. .
ADVARSEL: I dette a apparat anvendes laser. W
, . _ , Q Q _
_ - . _ » ; L... ,
. Use 0 caution labels Note: 0 Mark is used. X Mark is not used. ==
Areas sowms sowmo. . sowo7 ' soWoie 79mm
[MC] x o * _ x 3 - x
rel o x o .o
[EK]. (XLL [EGI- .
[EB]. [EH]. [EF]. 0 X 0 0
£1, [x3], [XA] Obs:

SQWD45

ADVARSEL-Usyrtligt
Iaserlys udstrales ved
timing. UNDGé DIR-
EKTE BESTRALING.

DANGET-lnvisible laser
radiation when open.

worn DIRECT EX-
POSURE TO BEAM.

sowm o

Apparaten innehéller laser
Komponent av hoger laserklass
an klass 11.

-E

Million-minim utiri. mi
[tin-limit": Illlllllflll rim Ml!

"Antflllfllhirnuumur uttr rt

tucltnllmimut murmur ti chirnt'

M '
\

Control section

mu
® Power switch (power) ® Recall button (recall)
l - '

J: @Disc holder @ Music scan button (M scan)

0 @ Remote-control signal receptor Izzrbutton can be used to play the first part of each track in

P (remote sensor) '
@Numeric buttons (+10, 0, 1~ ~10) @ A'3 repeat button (A03)

These buttons can be used to select the track numbers and @ Repeat button ( )'

SQWD19

VAROITUSl Lane sis ' ti laserdicdin,
joka Iahettaa' nakymatonta silmille
vaarallista lasersateilya

I BEFORE USING THIS UNIT

Before placement

The optical pick-up is secured to prevent damage during
transport. Be sure to release it before use.

*-

L°°k Shall (in the Push to unlock.
locked condition)

Note:
When carrying this unit, be
sure to remove the compact
disc from inside the unit,
and pull out the lock shaft to
secure the optical pick-up.

Soft cloth or similar material (to prevent scratches)

Notes of placement

I Place on a flat, level surtace so that the front-rear
inclination does not exceed 5".
I Avoid places such as the following:
ONear any equipment or device that generates strong magnet-
ism.
OOn any heat-generating equipment or device, or in any place

, where the temperature is high'(40°C'or higher).

0Extremely cold places (5°C or below).
nNear a tuner or TV (It may cause noise in the broadcast, or
disturbance of the TV picture.)
I Do not place heavy objects, other than system compo-
nents, on top of the unit.
I When carrying or storing the unit, handle It with care so it
Is notsubjected to any strong. bumps.
Always remove the disc before storing the unit for any period
of time. L
I To avoid problems due to vibration.
.00 not place a book or similar object under this unit.
000 not route the connection cables (of this or other units)
across the operation panel. across the top, or under the unit.

the recording time.
@ Programmed-play button (program)

@ Random- p-lay Button (random)
This button can be used to select random" play (the units
microcomputer selects the sequence of track play in a
random order).

® Compact-disc edit button (edit)
When compact- -disc sounds are to be recorded to tape, this
button can be used to calculate the number of tracks that
can be recorded» on the two sides of the tape. considering
the length of the cassette tape used. so that there is no
interruption of tracks.

® Clear button (clear)
© Display-mode select button (display mode)

This button can be used to select, each time it is pressed, .

either the display of the play position of the disc, or the
display of the output level, by the indicator.

Tape-side select button (side A/B)

@ Peak-level search button (auto peak)
This button can be used to locate the maximum signal level
(peak level) for the signals on the disc. Thls is a convenient
feature that helps when adjusting the recording level when
compact-disc sounds are to be recorded to tape.

@ Time-mode select button (time mode)

Search buttons (44 search/search b»)

These buttons can be used to locate a desired part of the
disc at high speed (iorward or reverse) during disc play,
(The search speed is slow when the button is first pressed,
and becomes faster if the button is pressed and held
continuously.)

@ Play button (play/b)
@ Pause button (pause/II)
@ Stop button (stop/I)

This button can be used to stop the disc play, as well as to
cancel the various play modes.

® Skip buttons (I« skip/skip »i)

® Index-skip buttons (4- indexlindex _..) '
These buttons can be used to skip to any desired index
number. after which play begins irom that point.

What Index numbers are...

Index numbers are sub track numbers used to
subdivide tracks into smaller parts for reference
purposes.

Compact discs that have such subdivisions are
indicated by the symbol E:@ on the notes and
commentary that accompany the disc.