Technics SLDV 150 Service Manual

Page 1

ORDER NO A0990716602

ervice Manual

menu VIDEO
'lcowrmcr SB-FS75
olémL Au mo Remote
Control
Transmitter

MA

r r: slag: «me gm;

" SB-EH750

DVD Changer

DVD Changer

SL-DV150

Because of unlque lnlerconnectlng cables, when a component
requlres service, send or bring in the entire sysiem.

Specifications

Discs played Section
DVD-Video disc: 8M2 cm srngle-srded srnglelayer
812 cm srngleAsrded. doubleilayer
8 l 2 cm doublesrded double-layer

{One layer per srda)

Compecl disc (CD-DA. VIDEO CD): 812 cm (1156

Audio Section
DA converter:
Frequency response:

CD audio:
DVD (Ilnear audio):

Della»srgma DAC

A - 20 kHz : 1 dB
4 v 22 kHz :1 dB (48 kHz sampling)
4 - 44 KH2+L *3 dB (98 kHz sampling]

Video Section

Slgnal system: PAL (PALGO NTSC)

Output level:
Composile Video: 1 Vprp (75 £2]
S-vldeo Y: 1 Vp-p (75 ll)
S-vldeo C; 0.300 V01; (75 £1) PAL

0 286 Vp~p 175 [2; NTSC

Technics

35 P575 Colour -
(S) Sliver Type
Area
(EG) Europe.
wetem SC-DV150
Sound Processor SHOW 50
Tuner/Amplifier SA-DV15O
DVD Changer SL-DVfiD
Cassene Deck HSDVlSO
From Speakers' SBAEH750
Cemer Speaker' SB»PC75
Surround Speakers SB-PS75

all: :Made in Smgapore

Pickup Section

Beam source: Semrconduclor laser

Waveleng1h: 668 nm
General

Dimensions (WX HXD): 293x89x290 mm
Welghl: 2.6 kg

Notes: Specrlrcalrons are subrecr (0 change wirnour notice
Weight and drmensrons are approxrrnaie
Tolal harmonrc dislomon IS measured by (he digital Speclrum
analyzer

AWARNING

This servrce inlormalron is designed lor experienced repair Kechnrcians only and is nol desrgnec lor use by me general public ll does nol
contarn warnrngs or caulrons lo advise nomechnrcal rndrvrduals oi polenrral dangers In anemplrng go servrce a product.

Producls powered by eleclrrmly should be servrced or repalred only by experlenced prolesslonal lechmcrans Any allempl r0 servrce or
repair the producl or products deal! wrlh 1n lhrs servrce rnlormalron by anyone else could resull rn senous rnrury or death

(C) l999 Malsushila Eleclric lnduslrial Co , Ltd
All rrghls reserved. Unaulhonzed copyrng

l

Page 2

SL-DV150

I Contents

Handling Precautions tor Traverse Dec
Precaution ol Laser Diode
Location oi Controls ,.
Operation Checks and
Component Replacement Procedures ..
What is DVD .........
Operation Description
Optical Pickup Sell-Diagnosrs and so acemen
SellADiagnosls Function and Service Modes
Schematic Diagram .............
Printed Circuit Board Diagram
Wiring Connection Diagram

NOTE :

Type Illusifation ol IC Transistors and Diodes
Block Diagram
Terminal Function oi lCs
Abbreviations.. ....
Optical Pickup Tilt Adtuslment
To Supply Power Source
Electrical Adiustment
Replacement Parts LlS
Cabinet Parts Location
Loading Unit Parts Location
Traverse Unit Parts Location N

Refer to the service manual (or Model No. SA-DVtso (ORDER No. A09907165C2) tor Information on "Accessories,

Connections", installation", "Operations and Packaging".

I Handling Precautions for Traverse Deck

The laser diode in the optical pickup may break down due to potential difference caused by static electricity at clothes or human body»
So be careful ot electrostatic break down during repair oi the optical pickup,

0 Handling of optical pickup

1 Do not subject the optical pickup to static electricity as it is
extremely sensitive to electrical shock.

2 To prevent the breakdown ol the laser diode. an antistatic
shorting pin is inserted into the flexible board (FPC Board).
When removing or connecting the short on finish the job in as
short time as possible.

3. Be careiul not to apply excessive stress to the flexible board
(FPC Board)

A. Do not turn the variable resistor (Laser power adjustment).

0 Grounding tor electrostatic breakdown

prevention
1. Human body grounding
Use the antistatic wrist strap to discharge the static electricity
lrom your body.
2, Work table grounding
Put a conductive material (sheet) or steel sheet on the area
where the optical pickup is placed and ground the sheet.

Caution:

The static electricity at your clothes witl not be grounded through
the wrist strap. So take care not to let your clothes touch the
optical pickup.

Pickup unit

"ex hie cable

Us: a clip or other item
rion'F-umdtwiunvl

Wr isr st: an
(Anti-static bracelet) /

1M0

Page 29

I Schematic Diagram

Page
fl DVD MODULE crncurr ao~39
El CONNECTOR cmcurr so
DAc cmcun-.......................................40.41

SL-DVI 50

Page
fl CLAMP sw cmcun' 42
E BOTTOMIPOSITION sw CIRCUIT 42
[fl OPERATION crncurr 42

E] VIDEO OUT cmcurr. do
E MOTOR CIRCUIT 42

'1 MAIN CIRCUIT .................................... 4245

- This schematic diagram may be modified at any time with the development at new technology

Notes:

I 51 : Tray position I detect switch in "OFF" position

I 52 : Tray position 2 detect switch in 'OFF' posttron

I 53 : Tray open detect switch in OFF' position

I 54 :Clump switch in OFF' position

I 55 : Bottom switch in OFF" position

I 5601 : Disc select switch (DISC 5)

I 5502 : Disc select switch (DISC 4)

I 5503 : Disc select switch (DISC 3)

I 5604 : Disc select switch (DISC 2)

I 5605 : Disc select switch (DISC 1)

I 5606 : Disc direct open swrtch (DIRECT OPEN DISC 1)
I 5607 : Disc direct open switch (DIRECT OPEN DISC 2)
I 3606 : Disc direct open switch (DIRECT OPEN DISC 3)
I 5609 : Disc direct open switch (DIRECT OPEN DISC 4)
I 8610 : Disc direct open swrtch (DIRECT OPEN DISC 5)
I sort : Disc tray openlclose swltch (A OPEN/CLOSE)

I 5612 : Repeal tunctlon switch (A-B REPEAT)

I 8613 : Repeat lunctron switch (REPEAT)

I 3514 : CD edit swrtch (CD EDIT)

I 5615 : Disc management select switch (1 DISC/ALL)

I 5616 : H.8low-motton/search swrtch (<4. SLOW/SEARCH)
I 5617 : F.810w-motion/search switch (». SLOW/SEARCH)
I 8616 : Pause switch (II)

I 5619 :Slop switch (I)

I 5620 : Play switch (:>)

I 5621 : FLSkip switch (K4, SKIP)

I 5522 : F.Sktp switch (m, SKIP)

I VR1301 : V level adtustment VR

0 vntatn : 6 level ad1ustment VR

I lndiwted voltage values are the standard values tor the unit measured by the DC electronic circuit tester (high~impedance) with the chassis taken
as standard. Theretore. there may exist some errors in the voltage values. depending on the internal impedance 0! the DC circuit tester.

I Important satety notice:
Components identified by A. mark have special characteristics important tor satety.
Furthermore. special parts which have purposes at tirevretardant (resistors). highouatity sound (capacitors). Iow~nmse (resistors). etc. are used.
When replacing any at components. be sure to use only manutacturer's specttied pans shown in the parts list,

I Caution!
IC and LSI are sensnive to static electricity.
Secondary trouble can be prevented by taking care during repair.
Cover the pans boxes made oi plastics wrth aluminum toil.
Ground the soldering Iron
Put a conductive mat on the work table.
Do not touch the legs of to or LSI With the lingers directly.

I Voltage and signal line

-Ih-

:1 d)
mE:j>

- Positive voltage line : Audio signal line

: Video signal line ; Video/Audio srgnal line

. Center sp.drive srgnal line : Surround spdnve signal line

:>
:5
-->

: Sub wooter signal line