Yamaha RX-485/RDS Schematic

STEREO RECEIVER

RX-485/

RX-485RDS

SERVICE

MANUAL

IMPORTANT NOTICE

This manual has been provided for the useofauthorized YAMAHA Retailers and their selVice personnel.

It

has been assumed that basic selVice procedures inherent to the industry, and more specifically YAMAHA

Products, are already known and understood by the users, and have therefore not been restated.

WARNING:

IMPORTANT:

The data provided engineering, and selVice depanments Modifications are, therefore, inevitable and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear

WARNING:

IMPORTANT:

Failure to follow appropriate selVice and safety procedures when selVicing this product may result in personal injury, destruction product to perform as specified. For these reasons, we advise all YAMAHA product owners that any selVice required should be perfonned appointed selVice representative.

The presentation or saleofthis manual to any individual or firm does not constitute authorization, cenification or recognition establish a principle-agent relationship

is

believed tobeaccurate and applicable to the unites) indicated on the cover. The reseach,

Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulated by grounding yourself gauge black wires connect Tum the unit OFF during disassembly and apply power

of

YAMAHA are continually striving to improve YAMAHA products.

to

exist, please contact the distributor's SelVice Division.

to

this buss).

to

the unit.

of

expensive components, and failureofthe

by

an authorized YAMAHA Retailer or the

of

any applicable technical capabilities, or

of

any form.

to

the ground buss in the unit (heavy

pan

replacement. Recheck all work before you

•

CONTENTS

TO SERVICE PERSONNEL 1 FRONT PANELS 1 2 REAR PANELS 2 3 SPECIFICATIONS 4 5 INTERNAL VIEW 5 DISASSEMBLY PROCEDURES 6 AMP ADJUSTMENTS 6 TEST MODE 7 TUNER ADJUSTMENTS 8 RX-485 BLOCK DIAGRAM 12 13 RX-485RDS BLOCK DIAGRAM 14 15

11

RX-485 RX-485RDS RX·485 DISPLAY DATA RX·485RDS DISPLAY DATA FRONT END PACK TEST POINT WAVEFORMS PRINTED CIRCUIT BOARD SCHEMATIC DIAGRAM PARTS LIST REMOTE CONTROL TRANSMITTER

~-COM

DATA

2.95K-223

DATA

YAMAHA

P.O.Box1,Hamamatsu,Japan

IQl

®

PrintedinJapan

16-17 18-19

20 21 22

23 24-33 34-39 40-48

49

CORPORATION

'94.4

RX-485/RX-485RDS

•

TO

SERVICE

1.

Critical Components Information. Components having special characteristics mustbereplaced with parts having specifications equal those originally installed.

2.

Leakage Current Measurement (For 120V Models Only). When service that

all

from supply circuits.

• Meter impedance should by

0.15J.lF.

• Leakage current must not exceed 0.5mA. Be

sure to test for leakage with theACpluginboth

• polarities.

has

exposed conductive surfaces are properly insulated

PERSONNEL

are

marked

been completed. itisimperativetoverify

be

equivalent to 1500

ohm

and

shunted

AC

to

WALL OUTLET

@]~

EQUIPMENT TESTER UNDER

TEST EQUIVALENT

I~~

INSULATING TABLE

LEAKAGE

OR

I

WARNING: CHEMICAL CONTENT NOTICEI

The solder usedinthe production of this product contains LEAD.Inaddition, other electrical/electronic and/or plastic (where applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other entities)

DO

NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC

ANY REASON WHAT SO EVER! Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or

expose eyes to solder/flux vapor!

If you come in contact with solder or components located inside the enclosure of this product, wash your hands

before handling food.

to

cause cancer and/or birth defects or other reproductive harm.

OR

PLASTIC COMPONENTSINYOUR MOUTH FOR

•

FRONT

~

RX·485

~

RX·485RDS

PANELS

nl

l

o

r

nl

I

o

i 8

.83

I

78

•••••'•••

83

S

BEl.:

;;';l1lI

.:;;4!

"""""""

.......

I I 1 I

--~--

,

AUK

~

I I I 1

CD

I

"""""""

....

I I I I

--~--

'WI'

AUK

~

CD

I I I I

I

• 0 • • 0 • • 0 • • I

. .

,

. . .

0

- • •

0'

-.

C'

• +~• • •

~

........a

....-

V

o

r

-:-

0

a •

··

. .

,.

I

0

I

1

I

l

~

RX-485/RX-485RDS

'OiCiIo 0

--_

.....

~

~_c::

,;;.::

0000

DODD

000

aOD

ODD

"='

......

Do

1IlIl1I'M

\

o

RX-485/RX-485RDS

==-

Ci

0

~

•

REAR

~

RX-485 U model

~ RX-485 C model

PANELS

""

+8-

-Q+

@

........

-

r

2

RX-485/RX-485RDS

'Y

RX-485 R model

'Y

RX-485 A model

+8-

-G+

A

~

@

-@

0

@

~

8

Ami.:.....,.....

A+.:

...........

~ ~

A

@

cU°

o~

'Y

RX485RDS G model

3

•

SPECIFICATIONS

•

AUDIO

Minimum

8 ohms, 20Hz to 20kHz, 0.04% 6 ohms, 20Hz

Dynamic

8/6/4/2 ohms 95/115/1351150W

DIN Standard

4 ohms, 1kHz, 0.7%

IEC Power

1kHz, 0.04% THO, 8 ohms 75W

Power BandWidth

8 ohms, 32.5W, 0.08%

Damping Factor

8 ohms, 20Hz

Maximum Power (EIAJ)

8 ohms, 1kHz, 10%THO 95W

Input

PHONO

CO

Maximum

PHONO

Output

REC OUT 150mV/600 ohms

Headphone

0.04% THO, RL=8 ohms 0.46V/390 ohms

Frequency Response (20Hz

CO

RIAA Equalization Deviation (20Hz

PHONO

Total Harmonic

PHONO CD etc to SP OUT (32.5W/8 ohms) 0.02%

Signal-to-Noise Ratio (IHF-A Network)

PHONO CD etc (Shorted) 105dB

Residual Noise (IHF-A Network)

Channel Separation

PHONO CD

Tone

BASS : Boost/cut ±10dB (50Hz)

TREBLE : Boost/cut

Continuous

SECTION

RMS

Output

Power per Channel

THO

to

U,C,R models 70W

Power per Channel (IHF)

(G

Sensitivity/Impedance

MM

etc 150mV/47k-ohms

Input

MM

Level/Impedance

etc 0±0.5dB

MM

MMtoREC

MM

etc (input

Control

20kHz, 0.06%

Output

Power per Channel(Gmodel only)

THO

model only)

THO

to

20kHz

(R

Signal Level(1kHz, 0.04%

Jack

Rated Output/Impedance

Distortion

OUT (3V) 0.02%

(5mV Input Shorted) 82dB

(1

kHz,Vol. -30dB)

(Input Shorted) 60dB

5.1

k-ohms Terminated) 60dB

Characteristics

Turnover Frequency 350Hz

Turnover Frequency 3.5kHz

Loudness

Control

THO

model only)

to

20kHz)

to

20kHz)

(20Hzto20kHz)

(Level related equalization)

1

OHzto50kHz

80

2.5mV/47k-ohms

THO)

±1

OdB

-30dB(1kHz)

65W

85W

or more

90mV

0±0.5dB

100IlV

(20kHz)

RX-485/RX-485RDS

•

FM

SECTIONTunlng

Tuning Range

U,

C models 87.5to107.9MHz

A,

G models 87.5to108.0MHz

R model 87.5

SOdB

Quieting

Except G model Mono Stereo

Usable Sensitivity (75 ohms)

(30dB

Except G model 0.8IlV (9.3dBf) DIN, OIN,

Image Response Ratio

ExceptG

G model 80dB

IF Response Ratio 80dB Spurious AM Suppression Ratio 55dB Capture Ratio 1

Alternate Channel Selectivity

Except G model 85dB

Selectivity (two signals, 40kHz Dev.)

G model 70dB

Signal-to-Noise Ratio

(IHF) Mono/Stereo

ExceptG

(DIN-weighted, 40kHz

G model 74/69dB

Harmonic Distortion

Mono/Stereo

Except G model 0.1/0.2%

Mono/Stereo (40kHz Dev.)

G model 0.1/0.2%

Frequency Response

20Hz

Stereo Separation

Except G model 50dB G model (40kHz Dev.) 50dB

AM

SECTION

• Tuning Range

U, A, R model 530 to 1,710/531to1,611

Usable Sensitivity 100IlV/m Selectivity 32dB Signal-to-Noise Ratio 50dB Image Response Ratio 40dB Spurious Response Ratio 50dB Harmonic Distortion (400Hz) 0.3%

Sensitivity

SIN

Quieting, 1kHz, 100% mod.)

Mono (S/N 26dB) G model 0.9IlV Stereo (S/N 46dB) G model

mod~

Response Ratio

mod~

to

15kHz 0 ± 1.5dB

C models 530to1,710kHz G models

(1

kHz)

Range

(IHF,75ohms)

Oev.)

Mono/Stereo

to

107.9/87.5to108.0MHz

1.551lV(15.1

211lV

(37.7dBf)

80/75dB

531to1,611

dBf)

241lV

45dB

70dB

.5dB

kHz kHz

AUDIO SECTION Output Level/Impedance

FM

(100% mod., 1kHz)

Except G model 500mV/2.2k-ohms

G model (40kHz

AM

(30% mod., 400Hz) Except G model 150mV/2.2k-ohms G model 150mV/2.2k-ohms

Oev.)

400mV/2.2k-ohms

4

RX-486/RX-485RDS

• GENERAL

Power

Supply

U,

C models A model : G model R model

Power

Consumption R,A,Bmodels 135W C model 250VA, 205W U model 155W

AC Outlets

U,C,R,

A model Switched x 1 100W max

Dimensions (W x H x

Weight 7.0 Accessories

..

Specifications subjecttochange without notice.

U USA C Canadian

A

G models Switched x 2 100W max

D)

.........•.............

model

Australian

model

AC110/120/220/240V, 60/50Hz

(17-1/8" x 4-15/16" x 11-3/4")

Remote Control Transmitter x 1

Battery (size "AA", "R06") x 2

G European

R •....... General

AC

120V, 60Hz

AC

240V, 50Hz

AC

230V, 50Hz

.435 x 126 x 299mm

kg

(151bs 6 oz.)

AM

loop antenna x 1

FM

Indoor

antenna x 1

model

• DIMENSIONS

coCo

...........

!:!!

•

INTERNAL

VIEW

o

•

o

•

P.C.B. P.C.B.

P.C.B. P.C.B. P.C.B.

MAIN

(2)

MAIN

(1)

INPUT TUNER

MAIN

(3) OPERATION OPERATION

(2) (3)

Units:

mm (Inch)

5

•

DISASSEMBLY

(Remove parts in the order as numbered.)

1.

RemovalofTop Cover

Remove 4 screws

2.

RemovalofFront Panel

a.

Remove 5 knobs.

b. Remove 6 screws

Top Cover

(Q))

PROCEDURES

and 3 screws

in Fig.

1.

:,,----

-:=-~

-----.-

=-~~~

>~

(CV)

in Fig.

CV

-~

?i

-------~Q)

RX-486/RX-485RDS

3.

RemovalofRear

1.

Remove 15 screws

* The

P.

C. B. MAIN, INPUT, &

removed

in

Panel

(®)

this state.

in

Fig.

2. TUNER

can be

Fig. 2

Fig. 1

•

AMP

ADJUSTMENTS

• ConfirmationofInling current.

After Power is turned on. Confirm that the voltages across R137 (L ch), R138

(R ch) are between 0.1-3mV. If they exceeds

and R132

0.1-3mV.

0.1mV- 3mV

R137,

3.1

mV, open (cut off)

(R

ch), and reconfirm voltage is between

(DC)

R131

138

R132

R131

____

Cut

(L ch)

• Checking and Parts ReplacementofP.C.B. MAIN

a.

Disconnect the power cord from the AC outlet. b. Remove 3 screws fixing the Speaker terminal and Heat Sink. c.

Remove 4 screws fixing the Main Unit. d. Detach 1 connector terminal (CB104) e.

Place the Main Unit on its side as showninFig. f.

Operating checks can be taken by shorting between follow-

in

Fig.

ing test points

A.

in

Fig.

A.

B.

(1)

:

,

••••••

FRONT

p.e.B. MAIN

Fig. A

(1)

Short Point

TP101 TP1

03

TP105

~

TP102

~

TP104

~

TP106

Fig. B

6

RX-485/RX-485RDS

•

TEST

MODE

CAUTION:

Before setting to the TEST mode, write down the existing preset memory content of the Tunerina table shown below. (Thisisbecause settingtothe TEST mode will cause the memory content tobeas factory set,

all

i.e.,

the preset memorybythe user willbeerased.)

Preset group

A

B

C

0

E

P1

P2

RX-485

Howtostart

Turn the POWER switchONwhile pressing the PHONO, AlBICIDIE keys simultaneously, and the unit enters the TEST mode for the display check. (All display segments light immediately)

by

After that, the DISPLAY mode switches PHONO, CD, TUNER, AUX

Contentofthe

PHONO key : ALL LIGHTS CD

key : LIGHTS OFF mode

TUNER key : 7-segment (figure) display mode

TEST

mode

(A

number "8" appearsinthe display.

Others remain OFF.)

key.

key

ON

mode

means of

P3

P4 P5

P6

P7

P8

I RX-485RDS I

Howtostart

Turn

the UP, ters segments light immediately) At the same time, the factory preset memory After that, the DISPLAY mode switches by means of PHONO,

Content

PHONO CD

TUNER

POWER switch PRESETUPkeys simultaneously, and the unit enthe

TEST mode for the display check. (All display

CD,

TUNER, AUX

of

the TEST mode key

key

: ALL LIGHTS : LIGHTS OFF mode

key

: All digit of 7-segment (figure) display

mode. (Other remain OFF.)

ON

while pressing the TUNING

is

also restored.

key.

ON

mode

as

B

P~l

Modetodisplay only 1 digit of 7 segments (figures) (Others remain OFF.)

AUX key

to

How

Normal operation turned OFF or the AUX key pressed. At the same time, the factory preset memory

• Factory preset memory content

Preset

group

A/C/E

BID

Preset

group

A/C/E

BID

For all the above, AUTO TUNING and AUTO STEREO are selected as the TUNING mode.

: The modeisswitchedtothe NORMAL

mode and the TEST mode

cancel

is

P1

87.5MHz

630kHz

P5

107.9MHz (U, C)

108MHz

A)

(R,

1710kHz

(U,

C)

1611

kHz

A)

(R,

'

t

is

cancelled.

restored when the POWER switch

is

also restored.

P2

90.1MHz 95.1MHz

1080kHz 1440kHz

P6

88.1MHz 106.1MHz

900kHz 1350kHz

P3 P4

98.1MHz 530kHz

(U,

531kHz

(R,

P7

P8

107.9MHz (U,

108MHz

(R,

1400kHz

(U,

1404kHz

(R,A)

C) A)

C)

BB

AUX

key

to

How

Normal operation turned OFF or the AUX key pressed. At the same time, the factory preset memory

• Factory preset memory content

is

Preset group

AlC/D

B/E

Preset group

AlC/D

B/E

: The modeisswitched to the NORMAL

cancel

87.50MHz

108.00MHz

BBBBBBBB

and

mode

is

P1

630kHz

P5

1611kHz

the TEST modeiscancelled.

restored when the POWER switch

is

also restored.

P2

95.10MHz 1080kHz 1440kHz 531kHz

P6

88.10MHz 106.10MHz

900kHz 1350kHz 1404kHz

P3

98.10MHz

P7 P8

is

P4

101.50MHz

108.00MHz

7

•

TUNER

RX-486/RX-485RDS

ADJUSTMENTS

• Measuring Instruments

FM

signal generator

Stereo signal generator (SSG)

AM

signal generator (AM Distortion meter (DIST. AC voltmeter (ACVM) DC

voltmeter (DCVM) Oscilloscope Low

pass filter (YLF-15, fc:15kHz)

Oscillator

(FM

M)

SG)

• Dummy antenna

FM

r------------------·

I I

:

FM

SG

(SOO)

I I I I

I I

I

E2

(dB) =E1(dB) -6 (dB)

FM

r------------------·

I I

E1

I I

FMSG

(7S0)

I I

I I I I

I.

E2 (dB) =E1(dB)

AM

r------------------·

I I

~-__O_--+--.JW\r____o_-+_

AMSG

(SOO)

L......+---O--

:

I I

I

dummy

100

dummy

antenna

4S0:

------------~

antenna

10KO:

.........

-----O--~

------------~

.1

E2

o

RECEIVER

(7S0)

RECEIVER

(7S0)

....

AM

ANT

....

GND

• Test point

P.C.B. TUNER

RX-485RDS ONLY

r----------------------

> IC5 I

> IC4 I

ITP~

RDS SENSITIVITYADJ.

VR3

~

SIGNAL METER ADJ.

>

VR2

~

SEPARATION ADJ.

~

T2

10

PK1

DISCRIMINATOR BALANCE ADJ. MONAURAL (FRONT) DISTORTION ADJ.

(ANTENNA)

T1

01

PK2

FRONT END

AMANT GND

FMANT

FRONT

~::(///I

8

I

RX-486/RX-486RDS

FM

Adjustment

• Before Adjustment

1)

For

dB,1Jl

Example:

2)

100%

V=OdBJl

60dBJl=1 mV

modulation

applies.

means

that

the

frequency

deviation

75kHz.

• Connection diagram (Measuring Instruments)

1)

Discriminator balance adjustment

TP1

DCVM

TP2

FM

SG

FM

dummy antenna

FM

ANT GND

P.C.B.

TUNER

3) Install

4)

is

the

Set

each

specified.

Matching

switchatthe

Transformer

following

and

position

connect

unless

FM

SG.

otherwise

INPUT SELECTOR TUNER TUNING MODE AUTO

3)

Stereo distortion adjustment/separation adjustment

...----

~~mmy

antenna

FM

ANTP.C.

GND

TUNER

L.-_......l

L

B.

R

REC

OUT

2)

Monaural distortion adjustment

...---

FM

dummy antenna

...

FM

ANT

P.C. TUNER

GND

L

I

R

B.

REC OUT

see page 8 forTPlacations & adjustment points.

Step

5

* :

Adjustment Item

Rough adjustment of

1

discriminator balance

Rough adjustment of

2

monaural distortion

Fine

3

discriminator balance

Fine

4

monaural distortion

Verificationofdiscriminator balance

ExecutionofMAKER

adjustment

PRESET

Signal (ANT IN)

FM

ANT (750)

98.1MHz 70dBJl MONO 100Hz 100% modulation Same as Step 1.

of

Same as Step 1.

of

SameasStep 1.

Same as Step 1.

(RefertoTEST

Reception frequency

98.1MHz

* (A-4)

(A-3) RDS

98.1MHz

* (A-4)

(A-3) RDS

98.1MHz

* (A-4)

(A-3) RDS

98.1MHz

* (A-4)

(A-3) RDS

98.1MHz

* (A-4)

(A-3) RDS

MODEonpages

Adjustment

T1 (Front side core)

T1 (Antenna side core)

T1 (Front side core)

T1 (Antenna side core)

T1

(Front side core)

7.)

will

facilitate

4)

Sensitivity Verification

FM

dummy antenna

point

Both ends of R25 (Between

REC OUTL,R

Both ends of R25 (Between

REC OUTL,R

Both ends of R25 (Between

setting

reception

frequency

FM

ANT

GND

Test point

TP1

for

P.C.B.

TUNER

L...-_---J

and TP2)

adjustment.

L

R I

REC OUT

DC OV±100mV

Minimize the distortion.

DC

Minimize the dis-

tortion (to 0.25%

or less). DC

Rating

OV±50mV

9

Step

Adjustment

Item

6 Adjustment of

frontend

1FT

7 Verification of monau-

ral distortion

Verification of stereo

8

distortion

Verification of sensi-

9

tivity

10 Adjustment of

Separation

11

Adjustment of Signal

meter

12

Verification tuning

of auto

Signal (ANT IN)

FM

ANT (750)

98.1MHz 30dBJl MONO

1kHz, 100% modulation

FM

ANT (750)

98.1MHz 70dBJl MONO 1kHz,

100% modulation FM

ANT (750)

98.1MHz 70dBJl Stereo

or

L 1kHz, 100% modulation

FM

ANT (750)

88.1MHz

98.1MHz

106.1MHz

FM

ANT (750)

98.1MHz 70dBJl

Lor

Stereo

R 1kHz, 100% modulation FM

ANT (750)

98.1MHz 45dBJl MONO 1kHz 30% modulation

-1

OdBJl

or less

FM

ANT (750)

98.1MHz

23dBJl

Stereo

Lor

R

1kHz,

30% modulation

R

Reception frequency

98.1MHz

* (A-4)

(A-3) RDS

98.1MHz

* (A-4)

(A-3) RDS

98.1MHz

* (A-4)

(A-3) RDS

o Tuning

mode should be AUTO.

88.1MHz

o (A-6)

98.1MHz

* (A-4)

(A-3) RDS

106.1MHz

o (A-7)

98.1MHz

* (A-4)

(A-3) RDS

98.1MHz

* (A-4)

(A-3) RDS

98.1MHz

Adjustment

point

Front end

VR2

VR1

1FT

Test

point

Pin 16 of

REC OUT

ANT (750)

REC OUT

IC1

Adjust so thattheDCvoltage is maximum. CAUTION: Over-adjustment of the core will reduce the sensitivity. Maximum ±90°

0.4% or less

L,

R

1% or less

L,

R

o STEREO indicator should

light.

Set

the

MAN'L MONO.

SIN

should be 30dB at each

frequency

98.1

MHz, and 106.1 MHz.

to

Check

ensurethatthe voltage at the ANT terminal 3dBJl (14.25dBf) or less. With SSG output at L or

L,

R

thesignalleakagelevelatthe other

channel minimized. 36dB or more

Adjust so that all signal meters light.

Check to ensure that signal meters turn OFF.

o Automatic reception

should be available when the tuning key is moved and DOWN.

o The stereo indicator should

light.

o Audio muting should be ap-

plied during tuning.

Rating

tuning

of

1FT

mode

88.1 MHz,

should

to

is

R,

be

UP

* :

ExecutionofMAKER

PRESET

(RefertoTEST

MODEonpages

7.)

will

facilitate

setting

reception

frequency

for

adjustment.

~

/

10

AM

Adjustment (This should be done after

FM

adjustment.)

RX-485/RX-485RDS

age

1FT

ach

z,

o -

~

.

R,

be

e-

• Connection Diagram (Measuring instruments)

1)

Adjustmentofsensitivity

oAM

,.."

f---

AMSG

d

o

is

e

See page 8

Step

Adjustment of

1

sensitivity (1440Hz)

Verification of

2

sensitivity (630kHz)

Verification of

3

sensitivity

Verificationofauto

4

tuning

forTPlacations &adjustment points.

Adjustment

Item

AMSG

r--

Signal

(ANT

AMANT 1440kHz 50dBJl 400Hz, 30% modulation AMANT 630kHz 50dBJl 400Hz 30% modulation AMANT 630kHz 1080kHz 1440kHz 30% modulation

AMANT 60dBJl

GNO

IN)

loop

antenna

AMANT

P.C.B.

TUNER

Reception frequency

1440kHz

* (B-3)

630kHz T2

* (B-1)

630kHz

* (B-1)

1080kHz

* (B-2)

1440kHz

* (B-3)

Adjustment

L

-

R

~_'

RECOUT

point

T2

I I

I

~

Oscilloscope

Li

Test

REC OUT

AMANT

ACVM

OIS1.

point

I

M

I I

Rating

Audio output should be maximized.

Audio output should be maximized. Repeat the Step 1 and

Distortion should be 10% or less at each frequency. Check to ensurethatthevoltageat the ANT terminal is 54dBJl or less.

Auto reception should be availablewhen the tuning key is moved UP and DOWN.

2.

m

UP

ap-

al

RDS

Adjustment (RX-485RDS ONL

See page 8

Id

Step

1

forTPlacations & adjustment points.

Adjustment

Adjustment of

RDS sensitivity

Item

Signal

V)

(ANT IN)

(This shouldbedone afterFMand

Reception

frequency Receive RDS station. and GND.

Adjustment

point

VR3

Test

Between TP3

AM

adjustment.)

point

Rating

Adjust so that the AC voltage is

maximum.

maximum

Y2fJ2AI

Verification of auto PS Confirm that the display

2

(Program

10

service

name)

automatically turn into the PS when tuned again.

11

RX-485/RX-485RDS

•

RX-485

BLOCK

DIAGRAM

FMANT

GND

AM

ANT

PHONO

CERAMIC

FILTER

Fi 1

INPUT

SELECTOR

(4052)

TAPE 2

MONITOR

(4053)

AM/FMIFDET.

I C 1

LA1266

TAPE

MONITOR

(4053)

MPX

IC3

LA340

LM.:.:..U=--T...::EO---_-+IC

oI

MONO

t----'-c.=.:..:..:+-o

06

o

'"

STOP

SIGNAL

DATA

BUSaCONTROL

STRO

1

VOLUME

VR405

sos

.... ICSOS@)

®

TAPE

L

TAPE

TUNERL.R

CD

~

AUX

r--

REC

2

PB

r--

REC

1

L

PB

STRQ (STR)

TO:TUNER

MONO (MON) MUTE (MUT)

9

II

!

I I

I

PORT EXPANDER

IC505 BU2040

<

:ll::

I-

...J

<

(,)

0

@

®

;;

(')

l"l

5::?

IC503

9 II

!

I I

I

I I

I

I I

I I I

I

®

1:,

2

10

MOTOR

DRIVE

IC506

PURE DIRECT

SW401

(JJ

w

(JJ

...J

cD

W

<

W

cD

z

cr

0

I-

:;)

g

w

(,)

Z

:5

<

CD

'-;

REMO E SENSOR

12

13

MPX

Ie

A3401

J

3

T5

L.P.

F

L]TOINPUT

R

IC502

®®

SEL.

ee

ll)

o 0

ll) ll)

~

ll)

~

0125,126

REMOTE

CONTROL

PHONO

REMOTE SENSOR

0101,103,105,107,

109,111,129A,129C

POWER AMP

0102,104,106,108,110,

112, 130A, 130C

SYSTEM CONTROL

IC301

LA65204

..,

I

RY10l

31-50

t..=..-=J

D

SPEAKERS

SW10l

RONLY

r:

S

--4-.......::.

..:..:12::.......:.(

L.-

POW

27

52

<Xl

0

(')

0

1-

---'

0120 Dl07

- - -

+_1..=2.:.S:....)~0123'124'H

L

!'~~...J

'--___

Dl13

0122

t]Tl1011

'-----......-+-..j

iRY102

FI

(F2)

-15

+5

A

l

SPEAKERS

J

B

I

13

r-nPHONES

•

RX-485RDS

FM

ANT

GND

AM

ANT

BLOCK

DIAGRAM

CERAMIC

FILTER

Fi 1

AM/FM

I C 1

LA1266

IF

DET.

L.-"'T'""..,...

......

LM~U~T~E~

__

-+~IC505

t-";.,;;.;,;.""-!-

N

o

STOP

SIGNAL

DATA

BUSIiCONTROL

MP

I C3

LA3~

.•.

6

....

IC505

TAPE

PHONO

r--

2

L

r--

1

L

GO

AUX

REG PB

~

TUNERL,R

TO:TUNER

STRQ MONO MUTE

(STR)

(MON)

(MUT)

INPUT

SELECTOR

(4052)

r..::....:.....c..:..:::....-

TAPE

MONITOR

(4053)

I

~~

PORT

EXPANDER

IC505

9

II

I I

I

/I

BU2040

---..

2

TAPE

1

MONITOR

(4053)

IC503

9 II

I

I I

I

I I I

v

8~

10

VOLUME

VR405

I

I I

I

®

~

2

10

MOTOR

DRIVE

IC506

PURE

DIRECT

SW401

---'S:<..,T'-"R""O_IC505

R

SE.

~

en en

«

III

w

en

~

()

en

III

w

Z

W

z

a:

:3

0

~

«

::J

III

0

-J

14

MPX

I C 3

lA3401

T5

l.P.

F

l]TOINPUT

IC502

R®®..---------------<

SEl.

RX-485/RX-485RDS

VR3 RDS

SENSITIVITY

REMOTE

CONTROL

PHONO

I;

REMOTE SENSOR

<l)

a

('")

o

0101.103,105,107, 109, 111, 129A, 129C

POWER AMP

0102,104,106,108,110,

112, 130A, 130C

Icsos0

I

RY101

SPEAKERS

SW101

+5

A

l

SPEAKERS

J

B

0120

D107

S12 (+12S)

0122

u

z

<:

...J

<:

lD

14

mPHONES

15

RX-485/RX-485RDS

•

RX-485

Jl-COM

IC301 : LC65204A 4 bit

Il-COM

DATA

p

PAO/ADO 1 PA1/AD1 PA2/AD2

PA3/AD3/INT1

PBO/AD4/DACO 5

PB1/AD5/DAC1 6

PB2/AD6/S0R

PB31

AD7/START

AV+ AV-

VSS

OSC1 OSC2

VDD

RES

X1 X2

TEST

PFO/SI

PF1/S0 PF2/SCK PF3/1NTO

PCO

PC1 PC2 PC3

4

7

11

21

LC65204A

VP

PPO P03 P02 P01 POO PN3 PN2 PN1 PNO PM3 PM2 PM1 PMO PL3 PL2

PL1

PLO PK3 PK2 PK1 PKO PD3 PD2 PD1

27

PDO

PAO/ADO PAI/ADl PA2/AD2 _ PAJ/AD3/INTI

PBO/AD4/0Aml PB1/AD5/0ACi PB2I

AD6 /SOR

PB3/AD7/START

PD 0

PD 3

PFO

lSI

PF

I ISO

PF

2 ISCK

PF

3 IINTO

PA3/AD3/INTl

PF3/INTO

I

0----------,

0---------,

PMO-3

PNO-3

110

POO-3

BUS

PPO

r--""O-"'

<--

..........

---,._.r.

-J""~-v

OSC OSC2

Xl

X2

--<> TEST

--0

RES

--0

Voo

--0

Vss

--oVp

1

16

17

/

Pin No.

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41

42 43 44 45 46 47

48

49 50 51 52

Port

PAO PA1 PA2 PA3 PBO PB1 PB2 PB3 AV+

AV-

VSS OSC1 OSC2

VDD

RES

X1 X2

TEST

PFO PF1 PF2

PF3 PCO PC1 PC2 PC3

PD~

PD1 PD2 PD3 PKO PK1 PK2 PK3

PLO

PL1

PL2

PL3 PMO PM1 PM2 PM3 PNO PN1 PN2 PN3 POO P01 P02 P03 PPO

Vp

At Reset

H H H H H H H H

H H H H

L L L L L L L L L L L L L L L L

L L L L L L L L L L L L L

& Market detect

Model Protection input Tuner market input A1 Tuner market input A2 Power down detect Signal meter input Key input 1 Key input 2 +5V GND GND 4MHz (clock) 4MHz (clock) +5V RESET VDD OPEN GND Tuner STO in Tuner STSG Tuner ST in Remote control CE for LM7000 CL for LM7000 DA for LM7000 Mute out Power on relay out Phono remote out Port Expander (Clock) Port Expander (Data) FL segment 1 FL

segment 2 FL segment 3 FL segment 4 FL

segment 5 FL

segment 6 FL

segment 7 FL

segment 8 FL

segment 9 FL

segment 10 FL segment FL segment 12 FL digit 1 FL digit 2 FL digit 3 FL digit 4 FL digit 5 FL

digit 6 FL

digit 7 FL

digit 8

STBY LED out

FL,

Power supply

in

11

Function

(485G :

H,

385 not G :

Logic

L)

"-----

:ON

L

L:

down

H:ON H:ON H:ON

H:ON H:ON

H:ON H:ON H:ON H:ON H:ON H:ON H:ON H:ON H:ON H:ON H:ON H:ON H:ON H:ON H:ON H:ON H:ON H:ON

• AID INPUT PORT

No.

7 8

17

Name

KEY 1 KEY2

0

MEMO

POWER

1

EDIT

TAPE 2

KEY

PS

6

DOWN

2 3 4 5

MODE

TAPE 1 AUX TUNER CD PHONO

FM/AM

TU

DOWN TU UP

7 8

PS

UP

-

A-E

-

•

RX-485RDS

IC301 : LC866024B-5512

8 bit /l-COM

Jl-COM

DATA

P10/S00

P11/S10/SBO

P121SCKO

P13/S01

P14/S11/SB1

P15/SCK1

P16/BUZ

P17/PWM

TEST1

RES

XT1 XT2

VSS

CF1 CF2

VDD

P80/ANO P81/AN1 P82/AN2

P83/AN3 P70/INTO P71/INT1

P721INT21T0IN P73/INT31T01N

SOITO

S11T1 S21T2 S31T3 S41T4 S51T5 S61T6 S71T7

o

P07 P06 P05 P04 P03 P02 P01

POO S29 S28 S27 S26 S25 S24 S23 S22 S21 S20 S19 S18 S17 S16 VP

VDDVPP

S151T15 S141T14 S131T13 S121T12 S111T11 S101T10 S91T9 S81T8

10 11 12 13 14 15 16 17

1 2 3 4 5

6

7

8

9

No.

Port

P10 CE7000 P11 P12 P13 P14 RDS DATA P15 RDS P16 RDS RESET P17

TEST

RES

XT1

XT2 VSS VSS CF1 CF2 OF2 VDD VDD

P80 TUKIN 1

Name

DATA7000

ClK7000

PHONO REM

ClK

RDSID

-

RESET XT1

- -

OF1

I/O

0 0 0 0

0

-

I

Function

CE

for

lM7000 DATA for CLOCK for Player remote control (PLAY/CUT) RDS DATA (lC7073) RDS CLOCK (LC7073) RDS RESET (LC7073) RDS N.C. Reset

VCC

N.C.

GND

] Clock (12MHz)

+SV Tuner keyin1

ID

(lA2232)

lM7000

(ND)

18

(

RX-485/RX-485RDS

Pin No.

18 19 20 21 22 23 24 25 26 27 28

29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

Port P81 P82 P83 P70 P71 P72 P73

SO S1 82 83 S4 S5 S6 S7 S8

S9 S10 S11 S12 S13 814 S15

VDD VPP

VP S16 S17 S18 S19 S20 S21 S22 S23 S24 825 826 S27 S28 S29 POO P01 P02 P03 P04 P05 P06 P07

Name TUKIN 2 AMP KIN METER POWER DOWN RDS START INITIAL REMCON MODEL V3 11G 10G

9G 8G 7G 6G 5G 4G 3G 2G

1G P1

P2 P3 VDD VPP VP P4 P5 P6 P7 P8 P9 P10

P11

P12 P13 P14 P15 P16 STANBY POWER MUTE DATA2040 CLK 2040 PRT

IN

STEREO 81G

OUT

IN

SIG

1/0

0

0 0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Function

I I

I I I

I

0 0 0 0 0 0 0 0 0 0 0

0 0

I

I I

I

Tuner keyin2 (AID) Amp key in (AID) Tuner meter input Power down detect RDS SATRT (LC7073) Model detect Remote control Model select (P72) STBY LED select FL digit

11 FL digit 10 FL

digit 9 FL digit 8 FL digit 7 FL digit 6 FL digit 5 FL digit 4 FL digit 3 FL

digit 2 FL digit 1 FL segment 1 FL segment 2 FL segment 3 VCC

-VEE FL

segment 4

FL

segment 5

FL

segment 6

FL

segment 7

FL

segment 8 FL segment 9 FL segment 10 FL segment FL segment 12 FL segment 13 FL

segment 14

FL

segment 15 FL segment 16 STBY LED OUT Poweronrelay out Mute DATA for BU2040

CLOCK for BU2040

Protection STEREO (TUNER) STOP OUT (TUNER) IF

Count (TUNER)

11

(SO,

(AID)

S1)

18

• AID INPUT PORT

No.

17 18 19

Name

TUKIN 1 TUKIN 2

AMPIN

0

MEMORY

PRESET

DOWN

POWER

KEY

1

EDIT MODE

PRESET

UP

PHONO CD TUNER

2

FM/AM

AlB/C/D/E AF

3

4 5 6

TUNING

DOWN

FREQ/PSI

PTY

LD

TUNING

UP

SHIFT

TAPE 1

-

ENTER TAPE 2

19

RX-486/RX-486RDS

•

RX-485

•

V301

: 8·MT·79GK

DISPLAY

DATA

(VQ915100)

•

• PIN CONNECTION

NO.

CONNECTION

NO.

CONNECTION

1 2

F1 22

NX NX NX

• GRID ASSIGNMENT

BG

F1 23

7G

PATTERN

CD

4

3

NP 24

5

NP

P1 26

25

NC

NX

6G

~~yyyy~yy~

81

82

7 8

6

P2

P3

27

28 29

NC NC

5G 4G

0000000000000

00000000000000

83

84

000000000000

P4

NC

NOTE1)F1,

ocooooooo

0000000000 0000000000

00000000000

85 86

(

lG)

9

P5 30

1G

3G

00000000

87

0000000

AREA

10 P6

31

2G

2)

NP

3)

NC

COOO

000000

8889810

11

P7 32 33

4G

3G

F2

2G

12 P8

Filament No No

14

13

P9

P10

34

35

5G

6G

pin connection

15

P11

36

7G

lG

SILIEIEIP I

17

16

P12

NX

37

38

8G

NP

4)

NX

5)

DL

6)

1G-11G..Grid

19

18

NX NX NX

NX

40

39

F2

NP

No Datum

20

41 F2

extend

Line

.pt

21

• ANODE CONNECTION

~

P1 P2 P3 P4 P5 P6 P7 P8

P9 P10 P11 P12

20

8G

a

b

c d d d e

f

9

j

PJRESIET

m

P

MEMORY

7G

a

b b

c c

e e

f

9 9

-

TAPE

MONITOR

1

2

-

6G

~M

M

fM

5G

a

b

c d e

f

j

f

9

j

AUTO

TUNING

m

P

SLEEP

4G

a

b

c d e

9

h

k

m

n

3G

a

b

c d e

f

9

h

0

m

n

r

-

2G

a

b

c

d

e

f

9

-

kHz

-

n

MHz

1G

STIEREO

81 B1 B2 B3 B4 B5 B6 B7 B8 B9

B10

p

P:

:p

21

•

RX-485RDS

DISPLAY

DATA

(VR029500)

• V301 : 11-BT-120GK

• PIN CONNECTION

PIN NO.

CONNECTION

PIN NO.

CONNECTION

1

F1

22

NX NX

NOTE 1) F1, F2 Filament

• GRID ASSIGNMENT

• ANODE CONNECTION

~

P1 P2 P3 P4 P5 P6 P7 P8

P9 P10 P11 P12 P13 P14 MIEMORY P15 PRESIET - P16

11G 10G 9G

a

b b b

c d d e e e

f f f

a a

c c

9 9 9

-

j

-

m

-

p

-

rENTIER

TAPE

MONITOR

1

2

AM

FM

- -

CD

2 3 4

NP NP

F1

24

23

25

NX NX NX

2) NP No pin

3)

NC No connection

1 I G

'~J1b

"§£U'

d

(

l1G)

d

h

j

k

m

n

P

r t u

5

6

P1

P2

26

27 28

1G 2G 3G

10G

8G

a

b

c d e

f

9

h

j

k

m

n

P

r \

t u

PATTERN

7

P4 P5

P3

29 30

9G

~u

'5.

tiff'

d

(9G~2G)

7G

a

b b

d e

9

h h

k

m m

n

AREA

8 9 10

4G 5G

4)

5)

6)

8G 7G 6G 5G 4G 3G 2G

b

c

f

j j

11

P7

P6

31

32 33

6G

NX No extend pin DL Datum Line 1G-11G..Grid

~ ~

~ltl!l~U

~~~=l

I

(Q)

6G

a

c d e

f

9

k

n

P P

r t

u

r

t u

@

12 13 P8

7G

g g g

~(Q)S1~

14 15 16

P11

P10

P9

34 35 36

8G 9G

82

~~g~II~~1

~ ~

10G

7)

.

~:~(,

~.~

:~

~.

(Q)(Q)I

(

lG)

5G

a

b

c d e

f

9

h

j k

m

n

P

r

t u

4G

a

b

c d e

f

9

h

j

k

m

n

P

r t

u

d e

h

k

n

P

u

c

f

j

r

20

41

21

1G

STERlEO

-

S1 81 82 83 84

-

kHz

-

MHz

SLEEP

AUTO

TUNING

-

19

18

17

P13 P14

P12

37 38

11G NP

Angle of visual field

.......31·min. on upper side

.......24·min. on lower side

P15 P16 NX

40

39

NP F2 F2

1G

~='IIIIII

020100

SIL/EIEIP

3G 2G

a a

b b

c d e

f

9 9

h

j

k

m m

n

P

r t t

u

r--.

~

.,.--,

21

• FRONT

• Except G model PK1

: ENV-17298GI (VR242200)

END

PACK

• G model only

PK1

: ENV-17297GI (VQ987600)

ANT

C3

L2

RI

;I(

~

R3

C20

t----+--~-__t

CI7

I------+-_----if-f

L5

TR2

C8

R5

I

RIO

T1

~R~~f

Clo

IFOUT

GND

r

vee

VT

lCIl

R8

TR3

CI2

1----0

FOUT

R9

L3

L1

ANTl

AGC

C21

r

C3

R4

*

Cl0

CII

C

C9

R.

L6

I

:::~::r

IF

GND

OUT

W

VCC

C22

r

C23

r

R20

C24

r

C25rl;

C26

RI3

RII

C'h

r

VT

F

OUT

22

•

TEST

Point

CD

(Pin 1 of IC2) V:

2V/div H : 50nsec/div

DC

range

---"

/

"if/

"

' /

POINT

1:

....

"-..,./

<

1 probe

//

""\

WAVEFORMS

/~

\

1"'-.-./"

'\

~

..-/

~~

/

CH

1

Point ®

CH1:Pin15of

[

CH

2 : Collector of 0303

V:

2V/div

V:

5V/div CH2 H : 0.5sec/div DC

range

~

CH1

1:

IC301

1 probe

RX-485/RX-485RDS

J

2lJ

Point ®

(Pin24of IC4) V:

2V/div H :

DC

range

~

1/

"'---

171

P'

2lJ

Point ®

(Pin 1 of IC5) V:

2V/div H :O.1llsec/div

DC

range

r-.-.

/

!

bl

\,

l/

PI

2lJ

\

r

1:

1\

1:

\

1ll

ec/div

s

1 probe

l/

'"

1 probe

/"'\.

!

/

SM

S

A~

/

SA~

PLE

1'\

PLE

\

PLE

DI

""

58

ns

:71

CH

2~

2lJ

With the POWER switch turned ON, connect the power cord to the

\l/

-~

Point ®

(Pin14of IC301) V:

2V/div H : 50nsec/div

DC

range

,

.'

~

\

l/

1.u

p

AC

/

5lJ

,

outlet.

"

/~

/

SA~

• This waveformisnot availablebypushing the power switch

1:

1 probe

\

\...

PLE

8.

::>s

,

Disconnect the power cord from the AC outlet.

ON

and OFF.

\

,

kJ/

SAHP

./r...

\

/

\

;

\.

\

8.

.uS

/'.

-fi

I

/

2lJ

Point (j)

CH

1 :

[

V: V: H : 0.5sec/div DC

Pin10of

CH

2 : Collector of 0302 2V/div 5V/div

range

CH1 CH2

1:

IC301

1 probe

LEI581n

J

s

22

Point ®

(Pin12of IC301)

V:

2V/div H : 0.1Ilsec/div

DC

h.\

~

2lJ

range

1/

/1\\

/-I-"'

...

\.1

1:

1 probe

/ \

.I

\

SAt"jPLEI

0;;;;:;;

1/

7

8.lI.us

CH

1

~

""

l

1

,

v'

\1

7

\'i

;"

=

CH

2~

[;i'f

2lJ 5lJ

With the POWER switch turned ON, connect the power cord to the

AC

I

,

outlet.

SA~

• This waveformisnot availablebypushing the power switch ON and OFF.

\

\....

PLE

Disconnect the power cord from the

ps

8.

,

AC

outlet.

23

I

PoCoBo

c

MAIN

( 1 )

A

RX-485/RX-485RDS

•

PRINTED

1

CIRCUIT

TO:POWER J:

B

BOARD

TRANSFORMER l:

(Foil side)

...

~:=I--

-=:=----..,.==-----1

o

1

TO:MAIN (2)

2

+

C/)

a:

UJ

~

UJ

0-

C/)

g

.....

~-

~-~

FROM:OPERATIO

®

3

+

4

•

0107

and

0108

are transistors for temperature correction. Apply silicone grease to the contact surface with the heat sink.

5

24

6

PHONES

PoCoBo

MAIN

( 3 )

SPEAKERS

A B

ON ON

OFF

•

OFF

TO:MAIN (1)

.....-.=

25