Technics SLPG 460 A Service Manual

Page 1

COMPACT

DIGITAL AUDIO

mum-sham not shaping

DIGIT/IL

New Traverse Deck (RAE11OOZ)

Specifications

I Audio
No. of channels

U

Frequency response

Output voltage
Dynamic range
SIN

Harmonic distortion
Total harmonic distortion

Wow and flutter
DA converter
Output impedance

Load impedance
0 Headphone output level

2 (left and right, stereo)
2-20,GOO Hz. :05 dB
2 v (at 0 dB)

96 dB

100 dB

0,0035% (1 kHz. 0 d8)
crow/o (1 kHz, 0 dB)
Below measurable limit
MASH (1 bit)

600!)

More than 10 m

15 mW max. 320 (adjustable)

Technics

ORDER NO MBQ401045C2

ervice Manual

Compact Disc Player

Compact Disc Player

SL-PG460A

Colour
(K) . . . . Black Type

Area
Suiiix for
Model No. Area Colour
(E) Europe
(EB) Great Britain (K)
(EG) Germany and lialy

I Pickup

Wavelength 780 nm

Laser Power No hazardous radiation is emitted
(with satety protection)

I General

Power consumption 13 W

Power supply AC 50/60 Hz, 230-240 V
Dimensions (WXHXD) 430x92><290 mm
Weight 3.3 kg

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

For United Kingdom only:
This apparatus was produced to BS 800.

-Technics (or Panasonic) developed the worlds llrst MASH
type DAC and ADC. MASH technology was invented by
NTT (LSI Labs).

- MASH Is a trademark of MT.

Page 2

SL-PG460A .

lContents

OHandling Precautions for Traverse Deck
OPrecaution of Laser Diode
oAccessories ..
oConnections ,.
oCaution for AC Mains Lead (For United Kingdom) .
ILocation of Controls ........

OBasic Operating Procedure
oDisassembly instructions
oinstalting Disc Tray .......
eHow to Check the Main P.C.
OHow to Check the Servo P.C.B
oBiock Diagram .................

2 oSchematic Diagram .....
3 oPrinted Circuit Board Diagram
. 3 0Vlfiring Connection Diagram...
. 3 oDisplay Function cl
4
5
6

Automatically-Adjusted Results
oDigital Servo System...
oTroubieshooting Guide
oFunctions of to Termina
oFiepiacement Parts List
thabinet Parts Location
14 oLoading Unit Parts Location
15, 16 oPackaging .

lHandling Precautions for Traverse Deck

The laser diode tn the traverse deck (optical pickup) may break down due to potential dillerence caused by static electricity oi clothes or
human body.

So. be carelul ol electrostatic breakdown during repair at the traverse deck (optical pickup).

OHandllng ot traverse deck (optical pickup)

1. Do not sublect the traverse deck (optical pickup) to static
electricity as it is extremely sensitive to electrical shock.

2. To prevent the breakdown ol the laser diode. an anti-static
shorting pin is inserted into the flexible board (FPC board).

FPC ,_
Lens (DOMUOUCM (Handieitcareiully) / \\

When removing or connecting the short pin, finish the job in as /\
short time as possible.
3. Take care not to apply excessive stress to the ttexibte board (FPC
board). , ,
4. Do not turn the variable resistor (laser power ediuslment). It has Be sure '0 5h?" ll"? Pom?
already been adjusted. (Use the shorting pin or clip)
OGroundlng tor electrostatic breakdown
prevention 6
1. Human body grounding ,. . . ."F. . 1 :"FI'WK";
Use the anti-static wrist strap to discharge the static etectriclty E E t g 9 :
irom your body. r" J. i ....... .

2, Work table grounding
Put a conductive material (sheet) or steel sheet on the area where
the traverse deck (optical pickup) is placed. and ground the sheet.
Caution:
The static electricity at your clothes will not be grounded through the
wrist strap. 80, take care not to let your clothes touch the traverse
deck (optical pickup).

tron plate or some metals
to conduct electricity

lPrecaution of Laser Diode

CAUTION: This product utilizes a laser diode with the unit turned "on", invisible laser radiation is emitted irom the pick up Ions.
Wave length: 780 nm
Maximum output radiation power irom pick up: 100 uWNDE

Laser radiation trom the pick up unit is satety level, but be sure the iottowings:

. Do not disassemble the optical pick up unit, since radiation trom exposed laser diode is dangerous.
. Do not adjust the variable resistor on the pickup unit. it was already adjusted.

. Do not lock at the locus lens using optical instruments.

. Recommend not to look at pick up lens tor a long time.

bum

ACHTUNG: Dieses produkt enthett elne laserdiode. Irn eingeschelteten zustand wird unsichtbara laserstrehiung von der Iasereinheit abgestrahit.

Weltenlenge: 780 nm
Meximala strahlungsleistung der laserinhett: 100 uWNDE

Die strahlung an der lasereinheit Isl ungoléhrlich. wenn iotgenda punkta beachtet werden:

1. Die lasereinheit nicht lerlegen. da die strehtung an der trelgelegten ieserdiode getahriich ist.
2. Den werksseitig justierten einstellregler der lasereinreit nicht verslellen.

3. Nicht mit optischen instrumenten in die iokussierlinse btlcken.

4. Nlcht (iber litngere zeit in die lokussierltnse bllcken.

ii