Technics RSTR 232 Service Manual

Page 1

CREE? NC. #139281:ch

Service Maranl

Dolby NR-Equlpped
Stereo Double Cassette Deck

of]-

231 HX Pro headroom extension originated by Bang
Oluisen and manufactured under license from Dolby
Laboratories Licensing Corporation.

DOLBY, the double-D symbol, and "HX PRO" are
trademarks of Dolby Laboratories Licensing
Corporation.

RS-T330R MECHANISM SERIES (ARSOO)

SPECIFICATIONS

I CASSETTE DECK SECTlON

Deck system
Track system

Stereo cassette deck
A-track, 2-channel

Recording system AC bias
Bias lrequency BOkHz
Erasing system AC erase

Heads
Deckt Playback head (Permalloy) Xt
Deck 2 Recording/Playback head (Permalloy) ><1
Erasrng head (Double-gap ferrite)>

Motors
Deckt Capstan/Reel table drive (DC servo motor)><1
Deck 2 Capstaaneel table drive (DC servo motor) X1
Tape speed A.8<:rn/sec. (173 ips)

Wow and flutter
For (P, PC) areas
For others

0.1% lWFtMS)
0.0 36 (WRMS)
:0.2% (DIN)
Fast forward and rewind times
Approx. 110 seconds wrth C-BO cassette tape
Frequency response (Dolby NR oil)

NORMAL 40 Hz~15kH213dB
For(P, PC) areas 20Hz~17kHz
For others 20 Hz~16kHz (DIN)

CroZ 40Hz~15ksz3dB
ForlP, PC) areas 20 Hz~17kHz
For others 20Hz~16kHz (DIN)

Technics

Cassette Deck

RS-T R232

Colour

r-"_-'-l
l (K)...Black Type

Area

Suffix for
Model No.

(P) U.S,A.
(PC) Canada.

Area Colour

(EE) 3 Great Britain.
Germany and ltaly.l .» I
(EGI Continental Europe. (KI
2 Asia. Latin America. I
(GO) Middle Near East
and Africa.
(GN) Oceania.
METAL 40HZ~16KHZi3dB
For (P. PC) areas 20 Hz~18kHz

For others 20 HZ~17KHZ lDlN)
SIN (Signal level:max recording level. CrO2 type tape)
NR all SBdB (A weighted)
Dolby B NR on SfidB (CCiRl
Dolby 0 NR on 71d 5 (CClR)
Input sensitivity and impedance
LINE IN 60mV/47KQ
Output voltage and impedance
LINE OUT 400mV/8000
HEADPHONES 30 mV/(Bfl)
(Load impedance iQ~6000)
I GENERAL
Power consumption 17W

Power supply
For (P, PC) areas
For (GC) area
For ohters
Dimensions (W x H x D)

AC 6) Hz, 120\/

AC 50160 Hz,110V/127Vl520V/240V
AC 50/60 HZ. 230 - 240 V

430 x1331 290mm

(165; x 53l, ><11J/32)

Weight 4] (g (10.4w)

Note:
Specifications are subjeCt to change without notice
Weight and dimensions are apprcximate.

Page 2

RS-TR232

I CONTENTS

SAFETY PRECAUTION ..............................
ACCESSORIES
CONNECTIONS.

WIRING CONNECTION DIAGRAM
BLOCK DIAGRAM .......................
INTERNAL CONNECTION DE FL

LOCATION OF CONTROLS REPLACEMENT PARTS LIST ....................................................... 3|)
DISASSEMBLY INSTRUCTIONS. EXPLODED VIEWS (Cabinet parts and
MEASUREMENTS AND ADJUSTMENTS. 11~13 Mechanical parts: DECK 1) ......

TERMINAL FUNCTION CF I 14 REPLACEMENT PARTS LIST .......

PRINTED CIRCUIT BOARDS 15~19 EXPLODED VIEW (Mechanical part DECK 2 37, 38

SCHEMATIC DIAGRAM .................................... 20~25 REPLACEMENT PARTS LIST 39, 40

TERMINAL GUIDE OF ICS. TRANSISTORS RESISTORS 8: CAPACITORS. 41, 42
AND DIODES.................. .................................................... 25 PACKING ..... 42

I SAFETY PRECAUTION (This safety precaution" is applied only in USA.)

WPPN.

Before servicing. unplug the power cord to prevent an electric shock.

When replacing parts. use only manufacturer's recommended components for safety.

Check the condition oi the power cord, Replace lf wear or damage is evident.

Alter servicing, be sure to restore the lead dress. insulation barries, insulation papers. shields. etc.

Belore 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.
2.
3.

Unplug the power cord and short the two prongs oi the plug With a jumper wire.

Turn on the power switch.

Measure the resistance value with ohmmeter between the iumpered AC plug and each exposed metal cabinet part. such as
sCrewheads antenna, control shafts, handle brackets, etc. Equipment with antenna terminals should read between 3 MO and
5.2 M0 to all exposed parts. (Fig. A) Equipment Without antenna terminals should read approxrmately infinity to all exposed
parts. (Fig. B)

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

Antenna
termlnal

Exposed /C Exposed /

metal metal

part pan

,-J
Ohmmeter E g 9 Ohmmeter
(Fig. A) (Fig. B)
Resistance=3 Mfl-5.2 MO Reststance=Approx. oo
4 lithe measurement is outside the soeCIfied limits. there is a possibility of a shock hazard. The equipment should be repalrecl and
rechecked before it is returned to the customer.

Stereo mini cable
(SJP2257T] .................. 2 pcs.

AC power supply cord Stereo connection cable

(SJP2249-3) .................. 2 pcs.
Egjiggggh K) I - I (£3 Remote control cable ....... 1 pc.
(SJA172) ......... (PC) . 1 pc.
(SJA173).. ...(GN) "' "
(SJA175»1) ., .(P) Sg<§a
(SJAi 93) ....... (EB)
Power plug adaptor Synchro edll cable . ... . . .. 1 pc.
(SJP9215) ...................... 1 pc,

(For GC area only)

Note: Configuration 01 AC power supply cord dltlers according to area.

42;

Page 5

Controls applicable to tape deck 1 and/or 2

C9)

®

RS-TR232

Cassette holder

Stop button (I STOP)
This button is used to stop the tape movement.

Forward-side playback button (> PLAY)

This button is used to start the playback or recording (of deck 2
only) of side A" ol the cassette.

(The tape will move in the lento-right direction.)

Eject button (EJECT)
This button is used to open the cassette holder.

Reverse-side playback button (4 PLAY)

This button is used to start the playback or recording of side B"
of the cassette in deck 2.

(The tape will move in the rightvto-ieft direction)

Rewind/review button (« REVIEW)

This button is used to rewind the tape.

During playback this button is used to review the contents at
high speed.

Fast-torward/cue button (» CUE)
This button is used to advance the tape. During playback this
button is used to cue the contents at high speed.

Tape counter reset button
(COUNTER RESET 2)
This button is used to reset thetape counter indication to 000".

@ Fast-torward/cue, rewind/review buttons
(»/« CUE/REVIEW)

These buttons are used to advance or rewind the tape.

During playback these buttons are used to cue or review while

listening to the contents at high speed,

Pause button (II PAUSE)
This button is used to temporarily stop the tape playback or
recording of deck 2 only. '

Automatic-record-muting button
(0 AUTO REC MUTE)

This button is used to make a silent interval on the tape while
recording is in progress on deck 2.

Record button (0 REC)

This button is used to set deck 2 to the recording standby
mode.

(Continued on nexi page)