Мануал technics rs bx501

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This is the 58 pages manual for Technics RSBX 501 Service Manual.
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Page 1

ORDER NO. AD9403072C2

Service Manual

Stereo Cassette Deck

DU-

Cassette Deck

RS-BX501

Colour
(K) Black Type

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

>I< Dolby noise reduction and HX PFIO headroom extension
manufactured under license irom Dolby Laboratories
Licensing Corporation. HX PFIO originated by Bang and
Oluisen. Dolby», the double-D symbol, and «HX PRO» are
trademarks of Dolby Laboratories Licensing Corporation.

)2? Itvm I3 ((4% we

AR-1 MECHANISM SERIES

SPECIFICATIONS

I CASSETTE DECK SECTION

Deck system
Track system

Stereo cassette deck
4-track, 2-channeI

Recording system AC bias
Bias frequency 80 kHz
Erasing system AC erase
Heads Recording/Playback head (Permalloy)x1
Erasing head (Double-gap ferrite)x1

Motors Capstan drive (DC servo motor)><1
Reel table drive (DC motor)x1

Tape speed 4.8 cm/sec. (17/8 ips)

Wow and flutter 0.07% (WRMS)
i0.2% (DIN)

Fast toward and rewind times
Approx. 50 seconds with 0-60 cassette tape

Frequency response (Dolby NR off)

NORMAL 30 Hz-15 kHz, :3 (.15

so Hz-16 kHz (DIN)
OrO: so Hz-15 kHz, 13 dB
so Hz-iG kH_z (DIN)
METAL so Hz-16 kHz, :3 dB

so Hz-l7 kHz (DIN)

Technics

11,

SIN (Signal level=max recordIng level, CIO: type tape)

NR off 56 dB (A weighted)

Dolby B NR on 66 dB (A weighted)

Dolby O NH on 74 (18 (A weighted)
Input sensitivity and impedance

REC (IN) 100 mV/47 kn
Output voltage and Impedance

PLAY (OUT) 500 mV/SOOQ

HEADPHONES 190 mV/(BQ)

(Load impedance 89-6000)

I GENERAL
Power consumption 19 W
Power supply AC 50 Hz/eo Hz. 230 V-240 V
Dimensions (WXHXD) 430x 125×293 mm
Weight 8.3 kg
Note:

Disign and specifications are subject to change without notice.
Weight and dlmenslons are approximate.

Page 2

RS-BX501

I CONTENTS

CAUTION FOR AC MAINS LEAD.
FRONT PANEL CONTROLS..
ACCESSORIES ……
CONNECTIONS.
PLAYBACK ………
T0 FAST-FORWARD OR REWIND THE TAPE.
ABOUT THE ATC FUNCTION
SELF-DIAGNOSTIC …………….
DISASSEMBLY INSTRUCTIONS
WRITING TO EEPROM..~ ………….
MEASUREMENTS AND ADJUSTMENTS
TROUBLESHOOTING GUIDE….

ICAUTION FOR AC MAINS LEAD
For (EB) area only

For your safety, please read the following text care-
fully.

This appliance is supplied with a moulded three pin
mains plug for your safety and convenience.

A 5-ampere fuse is fitted in this plug.

Should the fuse need to be replaced please ensure
that the replacement fuse has a rating of 5-ampere and
that it is approved by ASTA or BSI to 351362.

Check for the ASTA mark @ or the BSl mark @ on
the body of the fuse.

it the plug contains a removable fuse cover you must
ensure that it is refitted when the fuse is replaced.

if you lose the fuse cover the plug must not be used
until a replacement cover is obtained.

A replacement fuse cover can be purchased from your
local dealer.

CAUTION!

IF THE FITTED MOULDED PLUG IS UNSUIT-
ABLE FOR THE SOCKET OUTLET IN YOUR
HOME THEN THE FUSE SHOULD BE RE-
MOVED AND THE PLUG CUT OFF AND DIS-
POSED OF SAFELY.

THERE IS A DANGER OF SEVERE ELECTRI-
CAL SHOCK IF THE CUT OFF PLUG IS IN-
SERTED INTO ANY 13-AMPERE SOCKET.

If a new plug is to be titted please observe the wiring
code as shown below.
If in any doubt please consult a qualified electrician.

IMPORTANT
The wires in this mains lead are coloured in accor-
dance with the following code:

Blue: Neutral

Brown: Live
As the colours of the wires in the mains lead of this
appliance may not correspond with the coloured mark-
ings identifying the terminals in your plug, proceed as
follows:
The wire which is coloured BLUE must be connected
to the terminal in the plug which is marked with the
letter N or coloured BLACK.

BLOCK DIAGRAM ……….
SCHEMATIC DIAGRAM
PRINTED CIRCUIT BOARDS.

REPLACEMENT OF THE FOOT 43
WIRING CONNECTION DIAGRAM . M
TERMINAL FUNCTION OF IC… . 45~47
REPLACEMENT PARTS LIST .. 48, 53~55, 51
PACKAGING ………………………….. 48
CABINET PARTS LOCATION 49, 50
MECHANISM PARTS LOCATION.. 51, 52
RESISTORS AND CAPACITORS .. 56, 57

The wire which is coloured BROWN must be con-
nected to the terminal in the plug which is marked with
the letter L or coloured RED.

Under no circumstances should either of these wires
be connected to the earth terminal of the three pin
plug. marked with the letter E or the Earth Symbol Jim

Before use
Remove the connector cover as follows.

Connector
cover

How to replace the fuse
1. Remove the fuse cover with a screwdriver.

Fuse
(5 ampere)

Page 14

RS-BX501

6. Replacement for the mechanism unlt

Follow the disassembly procedure descrlbed
in item 1 on page 9.

Step 2 Remove the connectors.

CN2B

CP1

CNSB

Push the drlve lever and open the cassette
holder assy.

Drive lever

@ Remove the 4 screws and connector,

Mechanism unit

CN502 a f

Remove the 4 screws.

Front panel assy [RFKGSBX501EK]

Lift the cassette lid in the direction of arrow®,
and remove it in the direction of arrow®.

Cassette lid [RYFOZSB- K]

@mm 0~6
[XTBSS+8JH1] (Black)

.)|mm 6 ~ 9
[XTBSH ZJFZ] (Black)

__14__

Page 47

RS-BX501

Pln IIO .
Na. Mark Dlvlslon Function Check polnt X Dlserlptlon
53 — — Not used w —
54 — — Not used — —
55 — — Not used — —
56 — — Not used — —
Connector
57 VDD — Mlcrooomputer termlnal CN501 ® pin +5v, Backup
_ FL meter pull down voltage Connector _
58 ‘VP lnput termlnel CN501 0]) pln 20″
Connector
59 AVss — GND termlnal (AID) CN501 (3, pln 0V
Relerence power supply Connector
6° VREF ‘ (+5vl (AID) CN501 (9) pln +5V
Changes within the O <->
3V range each tlme the
Real pulse det. lnput (take up Connector av
61 RPT I take up reel ls through
elde) CN502 6) pln o approxlmately 30
degrees.
No tape load: Approx. 4.1 V
Deck 2 Mechanlsm SWICh Connector Normal tape wlth tab: Apprxo. CV
62 AD01 l (FlNH, CrOz, Metal, 0 h b’
OPENICLOSE) Input CN502 ® pln hrome tape wlt ta . 1.1V
Metal tape wlth tab: Approx. 1.7V
Changes withln the 0 «
3V range each tlme the
av
63 RPS :lzealfulse det. Input (supply gaggzcgr in 0 ML take up real is through
p approxlmately 30
degrees.
64 AD02 I Deck 2 Mechanism swltch Connector No tape load: Approx. 4.1 V
(MODE, RINH, HALF) input CN502 (D pln Normal tape wlth tab: Approx. 2.3V

_47_

Accompanying Data:

Technics RS-BX501 — SERVICE Other PDF Service Manual (Updated: Thursday 3rd of November 2022 04:20:54 AM)

Rating: 4.9 (rated by 14 users)

Compatible devices: SU-V900, RS-M205 — SERVICE, SA-700 — service, RS-B755, RS-TR333 — SCHEMATICS, SH-GE90, RS-1500US, ST-GT550.

Recommended Documentation:

Text Version of Service Manual

(Ocr-Read Summary of Contents, UPD: 03 November 2022)

Recommended Instructions:

WIRELESS GATEWAY, Prescott EXP, Cognos, LS12

Additional Information:

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