Sanyo MCD-S660F Bedienungsanleitung

Service Manual

Specifications

(CASSETTE SECTION )

Recording system . . . .

Erasing system ......

Tape speed .........

Fast forward and

rewind time .........

Frequency response . .

(CD SECTION )

Channels ...........

SIN ratio ...........

Wow&Flutter .......

Sampling frequency . . .

Quantization .........

Pick-up light source . . .

Pick-up wave length ...

Laser output .........

CD Portable

Stereo Radio

Cassette Recorder

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FILE NO.

MCD-s660F (AU)

PRODUCT CODE No.

142 961 02

(RADIO SECTION )

AC bias, 4track stereo Tuning ranges . . . . . . . FM :88-108 MHz

Magnet erase AM :525-1,710 kHz

4.75 cm Isec. Antennas ........... Built-in ferrite bar and

telescopic rod antennas

110 sec. (C-60 tape)

80- 12,000 Hz (Normal tape) (GENERAL)

2channels

70 dB

undetectable

44.1 kHz

16 bits linear /ch

Semi-conductor laser

790 nm

Continuous wave max.

0.6 mW

Specifications subject to change without notice.

.,.,

...

Output power . . . . . . . . 4.0 Wx2(DC max.)

Speaker . . . . . . . . . . . . 12cmx2,40hms

PIEZO X2

Terminal impedance . . PHONES :32 ohms

MIC :200-600 ohms/mV

Power source ........ AC :230-240 V, 50 HZ

DC: 12V

(8x“D “size batteries )

Dimensions . . . . . . . . . 541( W)x275(H)x215(D)mm

Weight . . . . . . . . . . . . . Approx. 6.0 kg including batteries

REFERENCE No. SfV1580348

LASER BEAM SAFETY PRECAUTIONS .....-

.Pick-up that emits alaser beam is used in this CD player.

-J

CAUTION :

USE OF CONTROLS OR ADJUSTMENTS

OR PERFORMANCE OF PROCEDURES on

OTHER THAN THOSE SPECIFIED o0-

HEREIN MAY RESULT IN HAZARDOUS *n.4

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A~D EKPOSURElU BEAM.

AovARsEL-usvNuGLASERsRAuNG VEDAGNING,

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UNOGAUOSEITELSE FORSTRALING.

VARNING-O.SVNLIGIASERSTtiLNINGNAR

OENNAOE~ARtIPPHAOOCHSPARRARURKOPPLAD.

SIRhEN ARFARLIG.

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‘REMOVAL AND INSTALLATION

●I)iscorinectthe power cord’s plug from the electrical OUtk?t.

.All wiring should be returned to the original position after work is complet

.First have ready many the new FIXERS (614 129 4971) for replacement.

●Arrange the lead wires so that they are not near the heat sink.

a. CABINET

(1) Remove the battery lid.

(2) Remove the 6rear cabinet mounting screws.(@)

(3) Remove the VOLUME &TONE control knob.(@)

(4) Press the STOP/EJEC,T button.

(5) Open the cassette compartment lid. (@)

b. CD TOP LID

>1 I

MC-grease

EM-50L

●Mount the spring wire, attaching parts @, @,

and 0in sequence.

A“...

—

Before attaching the cabinet, secure the buttons of the

tape deck in place using adhesive tape.

c. CHUCK PULLEY

●

-1-

CHUCK.PULLEY

To remove the chuck rxdlev, r)ush in the direction

indicated by the arrows (@j “and pull out (@)

(to prevent hook from breaking off).

...-.

.....

...-

.. .

REMOVAL AND INSTALLATION

d. WIRING LAYOUT

(a) TAPE MECHANISM

(b) REAR CABINET

LEAD

●Arrange the lead wires as shown illustration. II

RoOANTENNA

BATTERYTERMINAL P.C.B

HOOK

e. MOUNTING, POINTER

.,’.’

.: ... .

‘$ MC-grease

Qi! I1

MC-grease

EM-SOL -2

VIEW-@

f. “O” POINT ADJUSTMENT

/d@

TUNER ADJUSTMENTS -.,...

.Use aplastic screw driver for adjustments.

●Adjust the intermediate frequency of AM and FM to the frequency of ceramic filter.

Supply voltage :DC12.OV

Phones impedance :32 ohm

Standard output :0.5 mW (126 mV)

Function switch :RADIO

PARTS LOCATION

a. Al

Step

ADJUSTMENT BAND SELECT SWITCH :

Adjusting Connections

Circuit Input output

Closed the output Connect sweep

Itemninai by sweep Igenerator to

IF Igenerator, it place IC2106 (H) &

to L2103. J2101 (G)

I I

Tuning IConnect AM SG IConnect VTVM to

coverage /to Test Loop Ispeaker terminals

(n)

c= 1000P SIGNAL ENERATOR

Gi5i

3l;~16 ~2103 “2’2018 r

002001

mlMm

/,\

“MIF IN vCT-l@ vCT- 3

NO) ~1 @@l

‘2’02 0VCT-2 @vff-~ ❑L2104

1C201

XF213

FM?Fp/:(H) ~G~;j4 IF OUT

AM/FM IF OU;Z0c210&01

Connect AM SG Connect VTVM to

Tracking to Test Loop speaker terminals

-“.’.

AM 1I1 1

VTVM

SG Frequency Position of tuning dial Adjustment Oscilloscope

—

455 kHz Low XF213 4,

517k Hz Low end L2104

I I Max. I

1750k Hz High end VCT-4

I I I

600 kHz 600 kHz L2103

I I I Max. I

1400 kHz 1400 kHz VCT -3

?eDeat adjustments I

b. FM ADJUSTI

Adjusting

Step Circuit

1IF

2Tuning

3coverage

4Tracking

ENT BAND SELECT SWITCH :FM FM Dummy antenna :75 ohm

Connections

iSG Frequency IPosition of tuning dial IAdjustment

Input output I

Connect sweep Connect sweep

generator to Igenerator to

IC201 @(H) C2106 (H) I10.7 MHz ILow I---

&D2001 (G) &J2101 (G) I

Connect FM SG Connect VTVM to 87.0 MHz Low end L2102

toTPl (H) &TP2 (G) speaker terminals 109.0 MHz High end VCT-2

Connect FM SG Connect VTVM to

toTPl (H) &TP2 (G) speaker terminals 98.0 MHz 98.0 MHz VCT-1

unbalance

--i

Max.

Max. I

[5Repeat adjustments

-3-

TAPE DECK

.. ,....

a. HEAD REPLACEMENT AND HEAD AZIMUTH ADJUSTMENT

(a) Head replacement

●After replacement, demagnetize the heads by using adegausser.

●Be sure to clean the heads before attempting to make any adjustments.

●All wiring should be returned to the original position after work is completed.

(b) Head azimuth adjustment

(1)

(2)

(3)

(4)

(5)

-. -.

Load the test tape (VTT-703, etc., 10 kHz )for

azimuth adjustment.

Press the PLAY button.

Use across-tip screwdriver to turn the screw for

azimuth adjustment

so that the left and right output are maximized.

Press the the STOP button.

After completion of the adjustment, use thread lock

(TB-1401B )to

secure the azimuth-adjustment screw.

b. MOTOR REPLACEMENT

(a) Motor replacement

AND SPEED ADJUSTMENT

(b) Motor speed adjustment

(1) Insert the test tape (MTT-11 lN, etc., 3000 Hz).

(2) Press the PLAY button.

(3) Use aflat-tip screwdriver to turn the SVR (located inside the rear

of the motor) to adjust SVR so that the frequency counter

becomes 3,000 Hz.

RIP HEAD “--’

LOW

WHiTE

~MOTOR SPEED ADJUST

BACK SIDE OF SET

c. CHECKING THE MECHANISM TORQUES AND TENSION

.Clean the head, capstan and pinch roller before making any measurement.

Measurement Take-up torque Back tension Tape tension

Cassette for PLAY:TW-211 1A Drive-power cassette

PLAY: TW-21 11A

measurement F.FWD/REW:TW-2231 TW-2412

PLAY 30-60 gr.cm 2.0- 4.5 gr.cm 60 gr or more

F.FWD 55-120 gr.cm

... ./ REW 55-120 gr.cm

... ...

CD PLAYER ADJUSTMENTS .+,...

a. DISASSEMBLYOFTHE CD PLAYER MECHANISM

(a)

●

Replacement of the spindle motor

First, prepare the new turntable (Ml -2 )and new special

washer (Ml -4 )for replacement.

The removed turntable will be deformed by the heat of the

soldering iron, and cannot be reused.

●Prepare dial type calipers.

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(b)

(1)

(2)

(3)

(4)

(5)

(6)

The attached bonding material can be dissolved by using a

60W soldering iron to heat the shaft at the top part of the

turntable (Ml-2 )for about one minute.

The turntable can then be removed from the shafl by very

carefully applying force upward at the center of the lower

surface of the turntable.

Remove the two screws (Ml-3 )and remove the spindle

motor (Ml-5 ).

Attach the special washer (Ml-4 )to the spindle motor.

Apply asmall amount of amixture of the “Th~ee Bond 2001”

and “201 5F” bonding materials to the motor’s shaft.

Install the turntable as shown in the figure.

Secure the turntable by pressing gently.

Be sure to wipe away (by using apiece of cloth, or similar

material )any bonding material coming out of the hole.

Replacement and lubrication of the pick-up

Before replacement of the pick-up, be sure to carefully read

the section regarding the pick-up when the unit is moved or

transported.

Remove the two pick-up rail (Ml 2)with care fixing the two

latch with any way driver from bottom of chassis

(Ml-1 ).

If the pick-up is reconditioned or replaced, be sure to wipe

the rails clean and also apply acoating of FLOIL (G-474B )to

their entire circumference and entire length.

After replacement, install the shaft as before.

The pick-up P.C.Board pattern is “shorted”, as shown in the

figure ,so that the new pick-up will not be susceptible to the

effects of static.

Set the pattern to “open” after the pick-up has been

replaced,

SHORT

-5-

“e

~-. .-

—Ml-5

Don’t attached bonding material

at the top of shaft.

Bonding material

8-’””/”++

Ml-4 (SPECIAL WASHER) ““

Ml-1 (CHASSIS)

Be sure to wipe away the

bonding matearial \CHUCK PULLEY

-——

17.?5mm

.- *O.lmm

—

—-

M12

II(S=FT) \

M1-5(SPINDLE

II ‘*-i---i?

MOTOR SHAFT)

M12

.......

CD PLAyEf? ADJUSTMENTS

(BE SURE, AT THIS TIME, NOT

TO TOUCH ANY OTHER PART. )

em ‘@ ‘-d

(c)

(1)

(d)

(1)

(2)

(3)

(f)

(5)

(6)

(7)

(e)

(1)

(2)

(/L/

Sled motor replacement

See illustration at right.

+%h

Checking the operation of the CD mechanism

Disconnect the socket (for the sled motor power supply) from

the printed-circuit board. Ml-1

Apply avoltage of DC 2.0 Vto the sled motor’s

terminal.

Measure the current during sled motor operation.

●The direction of movement of the pick-up (outer groove or

inner groove) can changed by changing the battery polarity.

The current during sled motor operation varies .- .-

according to the positional relationship of gears

(M8 and M9 ). -,.

If the current exceeds 40 mA ,remove the Direction of pick-up movement Sled motor current

pipe (M7 )and gears (M8, M9 ).

Apply asmall amount of aFLOIL (G-474B )bonding Outer groove 40 mA or less

materials to the chassis shafts.

Install the pipe and gears as shown in the illustration. Inner groove 40 mA or less

M,8 M8 o@

Resetting the pick-up to the home position

The limit switch is switched ON by the projection of the rack

gear secured to the returned pick-up, after which the sled”

motor continues to operate (by the circuit) for approximately

20- 30 milliseconds ;there is then again areverse

operation, and movement to the position at which the switch

is switched OFF.

Rotation continues for about 20 -30 milliseconds after the

switch is switched OFF, and then the pick-up stop at home

position.

-6-

LIMIT ~

SWITCH

+- PICK-UP

-..“.

... . .

. . .

.....

:., .

.......

CD PLAYER ADJUSTMENTS ....-

b. PREPARATIONS

(a) Measuring instruments, tools and filter -#

(1) Test disc.: YEDS18(SONY)or etc.

(2) oscilloscope: SS5711 (l OMHzor dual-phenomenon)

or Memory scope :DSS6521 (Storagescope)

(3) Screwdrivers (non-metallic) for adjustments

(4) Low Pass Filter (L. P. F.)

(5) Resistor, Carbon 2.2 Kohm, l/4W .—

c. PARTS LOCATION

L- 0

I-J 1:1

l_l l_l

CD MAIN P.C.B

e‘1:”:1%c~33~:

o“;

‘Oscillosco

EYE PATTERN

Adjustment Measuring Short-circuit Input

Item instrument location onnection

(a) Tracking Oscilloscope

balance L.P.F. lJl::w -

(b) Checking

the “eye” Oscilloscope –—

pattern I

1I-~

TRACKING BALANCE

output djustment

connection location Adjustment value

TP 101 :TE SVR101 Waveform symmetry

TP102:VC A=B l. EJVp-p

ICIO1 (pin 72) Check be sure that the “eye”

:RF —pattern is at the center of the

TP 102 :VC waveform and that the dia-

mond shape is clearly defined

,.. .

-7-

.-- ..,.

CD PLAYER ADJUSTMENTS

d. ADJUSTMENTS

(a) TracKng balance adjustment

(1) Pull the CD block out from the unit body and wire

it to the CD main P.C.board test pint. &‘“

. ..

.“. -.

.. (2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

.-,-.

.-.

‘i,

Short-circuit points (JI 137 and J1 138) on the printed-

circuit board.

Connect an oscilloscope to TP101 (TE) and TP102 (VC).

Push the CD block back into the unit body.

Switch ON the POWER.

(Connect the power cord plug from the electrical outlet.)

Cancel the short-circuiting of short-circuit point

(Jl 137 and J1 138) on the printed-circuit board.

Set the test disc. &

PLAY switch push ON.

Adjust SVR101 so that the oscilloscope’s waveform is

symmetrical, as shown in the illustration.

(1O)Switch OFF the POWER.

(Disconnect the power cord plug from the electrical

outlet.)

Switch ON the DC power.

Connect an oscilloscope to IC101 (pin 72)

and TP102 (VC)-

Load the test disc.

PLAY switch push ON.

(b) Checking the eye pattern

(1)

(2)

(3)

(4)

(5) Check to be sure that the “eye “pattern is at the center

of waveform and that the diamond shape is clearly

defined.

(6) Press the STOP button.

(7) Switch OFF the DC power.

-8-

L.P. F.

TP 101

(TE)

TP 102

(Vc) ‘‘El

irqOUT OSCILLOSCOPE

-1

“’%’)-

.. . .. ... . . . .

iii

EXPLODED VIEW (CABINET &CHASSIS ).... -

—. -!

.....

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