Technics RSHD 81 Service Manual

Page 1

ORDER NO. A0980202902

ervice Manual

Cassette deck DEI-

SL-HDfll

ST-HDM

Cassette Deck

RS-HD81

*SB-HDS

*SB-HDSI

its-Host SE-Htm Remote control RS-IIDSI SE-HDSI narrate control
transmitter transmitter
Because of unique interconnecting cables, when a component Colour
requires service, send or bring in the entire system. (N) """"""" Gold Type
Area
3 E....... ....... Europe.
AFI-1 MECHANISM SERIE
System : SC-H D51
Specifications 3° "93
Deck system Stereo cassette deck SIN (Signal level=max recording level, TYPE 11 type tape)
Track system 4 track, 2 channel NR of! 56dB (A weighted)
Recording system AC bias Dolby B NH on BedB (A weighted)
Bias frequency 100kHz Input sensitivity and impedance
Erasing system AC erase REC (IN) 280mV/23kfl
Heads Output voltage and impedance
(Recording/Playback head) Pennalloy head PLAY (OUT) zaomwzzoo
(Erasing head) Double gap ferrite head
Motors I General
Capstan drive DC servo motor Dimensions (W X H X D) 196 X 103 X 221 mm
Reel table drive DC motor Weight 1.8kg
Tape speed 4.8 cm/s
Wow and flutter 0.1% (WFIMS) Notes:
Fast forward and rewind times Approx. 52 seconds 1. Weight and dimensions shown are approximate.
with 0-60 cassette tape 2. Design and specifications are subject to change without notice.
Frequency response
(Dolby NFl off) * Dolby noise reduction manufactured under license
TYPE I (Normal) 20Hz-17kHz (DIN) from Dolby Laboratories Licensing Corporation.
TYPE 11 (High) 20Hz-17kH2 (DIN) DOLBY", and the double-D symbol are trade marks
TYPE 1V (Metal) 20Hz-17kH2 (DIN) oi Dolby Laboratories Licensing Corporation.
SysterrVSC-HDSl:

Tuner: ST-HD51, Compact Disc Player: SL-HD51, Amplifier: SE-HD51, Cassette Deck: tits-DBL Speaker: *SB-HD51

Systern/SO-HD81 :

Tuner: ST-HDal, Compact Disc Changer: SL-HDal, Amplifier: SE-HDS1, Cassette Deck: H$~H081, Speakers: *SB~HD81

Notes:* ...... Made in PAES

AWARNING
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.

TechnicS

© 1998 Matsushita Electric Industrial 00.. Ltd.
All rights reserved. Unauthorized copying and
distribution is a violation of law.

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RS-HD81

I Contents

Location of Controls
Listening to Tapes.
Operation Checks and

Main Component Replacement Procedure
Measurements and Adjustments
Service Mode Function of Cassette Mechanism
Wiring Connection Diagram .....................
Schematic Diagram...

NOTE:

Printed Circult Board Diagram
Block Diagram
Terminal Function of lCs
Type illustrations oi IC's Transnslors and Diodes . ..... 27
Replacement Parts Li
Cabinet Parts Location
Loading Mechanism Parts Location .

Refer to the service manual for Model No. SE-HDBt (ORDER No. ADSBOZOZBCZ) and SE-HD51 (ORDER No. AD9802031C2) for
information on ACCESSORIES, INSTALLATION, CONNECTIONS and PACKAGING.

I Location of Controls
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I Listening to Tapes

Type of tape which can be played correctly:
The unit automatically identifies the type of tape.

Normal position / TYPE I 0
High position/ TYPE II
Metal position/ TYPE IV 0

® cassette holder
® Fast forward/rewind indicators
(HIGH SPEED FF/REW)
© Counter reset button (COUNTER RESET)
@ Cassette tray open/close button
(A OPEN/CLOSE)
@ Display button (DISPLAY)
Dolby noise reduction button (DOLBY NR)
® Reverse mode select button (REV MODE)
Record pause button and indicator (0 REC PAUSE)
® Fast lorwardlrewindltape program sensor buttons
(lTPS] <4, » [TPSD
® TPS skip button (TPS SKIP)
@ Playback buttons and indicators (4, b)
® Stop button (l)

[I Switch on the power.

Press A OPEN/CLOSE on deck, and then insert
the tape.

Load a tape with the exposed side facing the cassette holders
insertion part

Insert the cassette tape until it touches the back of the compart-
ment.

Press A OPEN / CLOSE once again to close the cassette holder.

Keep your fingers out of the cassette tray so that you do not get
pinched when it closes.

a To listen to a tape recorded in Dolby B NR
Press DOLBY NR and check DEIis displayed.
When playing backa ape which was not recorded on Dolby NR
system, press DOLBY NR so that indications go off,

El Press REV MODE to select the reverse mode.
Each time you press REV MODE, one of the indicators will

appear.
2:: The deck plays one side only, and then stops automa-
tically.

2): The deck plays both sides, and then stops automatically.
(:3: The deck plays both sides 8 times, and then stops auto-
matically.

B Press 4 or > .
b : The forward side will play.
4: The reverse side will play.

E Adjust the volume level as you like.

To stop tape playback:
Press I.

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