Technics SLPS 7 Service Manual

Page 1

MB000600202

Service Manual

MASH

mum-stage noise shaping

DIGITAL ID

in

Specifications

Audio

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

SIN:

Harmonic distortion:

Total harmonic distortion:

Wow and flutter:

DA converter:

Output Impedance:
Load Impedance:
Headphone output level:

2 (left and right, stereo)
2 - 20,000 Hz, :i: 03 dB
2.0 V (at 0 dB)

100 dB

1 15 dB

0.0018% (1 kHz, 0 dB)
0.0023% (1 kHz, 0 (13)
Below measurable limit
MASH (1 bit)
Approximate 600 Q
More than 10 kt!

15 mW max. 32 9
(adjustable)

Compact Disc Player

SL-PS7

Traverse Deck: FlAE11022 Mechanism
Series

Colour

(K) ........... Black Type
Areas

(E) ........... Europe.

(EB) ......... Great Britain.
(EG) ......... Germany, Italy and France.

Pickup

Wavelength: 780 nm
Laser Power: No hazardous radiation ls emitted
General

Power supply: AC 230 - 240 V. 50 Hz
Power consumption: 15 w
Dimensions (W x H x D): 430 x114 x290 mm

Mass: 4.0 kg

Nolan: Specifications are subject to change without notice.
Mass and dimensions are approximate.
Total harmonic distortion is measured by the digital spectrum
analyzer.

A WARNING

This service information is designed for experienced repair technicians only and is not designed lcr use by the general public.

It does not contain warnings or cautions to advise non-technical individuals at potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced prolessional 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.

Technicsi

© 2000 Matsushita Electric Industrial 00.. Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.

Page 2

CONTENTS

Page
1 Handling Precautions for Traversa Deck ................................ 2
1.1. Handling of traverse deck (optical pickup) ....................... 2

1.2. Grounding for electrostatic breakdown prevention

2 Pracaution of Laser Diode ------------------------------------------

3 Accessories ............................................................................ 3
4 Caution tor AC Mains Lead 4
5 Location of Controls rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr 5

6 Operation Checks and Component Replacement Procedureea
6.1. Checking tor the main P.C.B, and headphone jack P.C.B:6

6.2. Checking tor the servo P.C.B ------------ --»7
6.3. Replacement for the traverse unit assy- 8
6.4. Replcement for the loading belt and loading motor- '10

7 Self-Diagnostic Function ------------------------------------------------------ 12

7.1. Sen/o system self-diagnosis---»-~------'~- '12
~18
14
9 Schematic Diagram --------------------------------------------------------------- 15

7.2. Mechanism control switches self-diagnosis

8 Schematic Diagram Notes --------------------------------

Page
10 Printed Circuit Board Diagram rrrrrrrrrrrrrrrrrr » --------------------------- 23
11 Type Illustration of ICS, Transistors and Diodes ------------------ 27
12 Wiring Connection Diagram -» 28
13 Block Diagram --------------------- "29
14 Troubleshooting Guide -------------------------------------------------------- 31
15 Terminal Function of ICs rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr 33

15.1. i0401 (UPD7BO42F116): System Control/FL Drive
15.2. IC701 (AN8805SB-E1); Servo Amp --------------------
15.3. IC702 (MNG713RGlAL): Servo Processor/Digital Signal

was

Processor/Digital Filter 8. D/A convertermm-------------'~--v34

15.4. IC703 (AN8389S-E1): Focus Coil/Radial Coil/Sledge
Motor/Spindle Motor Drive -------------------------------------------- 34
16 Replacement Parts List -------------------------------------------------------- 35

17 Cabinet Parts Location -----
18 Loading Unit Parts Location
19 Packaging ----------------------------------------------------------------------------- 41

1 Handling Precautions for Traverse Deck

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

So be careful of electrostatic breakdown during repair of the
traverse deck (optical pickup).

1.1. Handling of traverse deck

(optical pickup)
1.00 not subject the traverse deck (optical pickup) to static
electricity as it is extremely sensitive to electrical shock.
2.To prevent the breakdown of the laser diode, an anti-static
shorting pin is inserted into the flexible board (FPC board).
When removing or connecting the shorting pin, finish the
job in as short time as possible. Reier to Fig. 1-1,

3. Take care not to apply excessive stress to the flexible board
(FPO board).

4. Do not turn the variable resistor (laser power adjustment). It
has already been adjusted.

Lens (00 not touch)

Be sure to short this portion
(Use the snorting pin or clip)

Fig. 1-1.

1.2. Grounding for electrostatic
breakdown prevention
1.2.1. Human body grounding

Use the anti-static wrist strap to discharge the static electricity
from your body. Refer to Fig. 1-2.

Wrist strap
(Anti-staticbracelet) /

1M9

Fig. 1-2.

1.2.2.

Put a conductive material (sheet) or steel sheet on the area
where the traverse deck (optical pickup) is placed, and ground
the sheet. Refer to Fig, 1-3,

Work table grounding

Iron plate or some metals to
conduct electricity

Fig. 1-3.
Caution:

The static electricity 01 your clothes will not be grounded
through the wrist strap.

So take care not to let your clothes touch the traverse deck
(optical pickup).