Sanyo DC-F170 Manual de usuario

Service Manual Mini Component

System

....

Specifications

TUNER SECTION

Reception frequency .FM :87.5-108.0 MHz

MW :522-1,611 kHz

CASSETTE DECK SECTION

Track system . . . . . . . 4track, 2-channel stereo

Frequency response . . 80 Hz -13,500 Hz

Signal to noise ratio . . 50 dB

Wow &Flutter . . . . . . 0.15 %(WRMS)

Tape speed . . . . . . . . 4.75 cmlsec

Fast forward and

rewind time . . . . Approx. 110 sec. (C-60)

CD PLAYER SECTION

Type ..............

Channels ..........

Sampling frequency . .

Pick-up ............

Laser output . . . . . . . .

Wavelength . . . . . . . .

Frequency response . .

Wow &Flutter . . . . . .

Changer, 3-disc

2-channel stereo

44.1 kHz

Optical 3-beam semiconductor laser

0.6 mW (Continuous wave max.)

790 nm

20 Hz -20,000 t+Z

Below measurable limits

This service manual consists of “’DC-F170U”( main unit ),

“RB-D9” (remote control )&“SX-F170” (speaker system)

DC-F170 (AU)

u’

.. .

PRODUCT CODE No.

129 502 05

AMPLIFIER SECTION ‘“””’”‘-‘“ ““’‘--” ‘- “’”

Output power . . . . . . .

Inputs . . . . . . . . . . . . .

outputs ...........

15WX2

(at 4ohms, 10% distortion )

VIDEO :400 mV /50k ohms

SPEAKER :4 ohms

Power requirements . .

Power consumption . .

~mensions (WXHXD) .

Weight . . . . . . . . . . . .

SPEAKER SYSTEMS

Type ..............

LJnit used . . . . . . . . . .

PHONES :8-32 ohms

AC :230-240 V, 50 Hz

45 w

Approx. 270 x300 x293 mm

Approx. 5.7 kg

2way bass reflex

Woofer: 12 cm cone type

Tweeter :piezoelectric

Maximum power-handling capacity 25 W(peak)

Nominal impedance . . 4ohms

Dimensions (WXHXD) .Approx. 180 x300 x207 mm

Weight . . . . . . . . . . . . Approx. 1.8 kg (per speaker)

Specifications subject to change without notice.

REFERENCE No. SM580751

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

CONTENTS

.,.. .. . . . ... i

..,,-

SPECIFICATIONS . . . . . . . . . . . . . . TOP

LASER BEAM SAFETY PRECAUTIONS .1

BEFORE USE OR TRANSPORTATION .2

WHAT TO DO IF . . . . . . . . . . . . . . . . . . 3

REMOVAL AND INSTALLATION ...... 3

TUNER ADJUSTMENTS . . . . . . . . . . . . 5

CD CHANGER OPERATION

DESCRIPTION . . . . . . . . . . . . . . . . . . . 6

CD MECHANISM REPLACEMENT .... 10

CD MECHANISM ADJUSTMENTS .... 15

CD PMYER ADJUSTMENTS ....... 17 _, #

TAPE DECK ADJUSTMENTS ....... 19

EXPLODED VIEW . . . . . . . . . . . . . . . . 21

PARTS LIST . . . . . . . . . . . . . . . . . . . 22

IC BLOCK DIAGRAM &

DESCRIPTION . . . . . . . . . . . . . . . . . . 27

SCHEMATIC DIAGRAM ............ 36

WIRING DIAGRAM ............... 38

IC &TRANSISTOR VOLTAGES . . . . . . 56

LASER BEAM SAFEN PRECAUTIONS

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

CAUTION :

USE OF CONTROLS OR ADJUSTMENTS

OR PERFORMANCE OF PROCEDURES

OTHER THAN THOSE SPECIFIED

HEREIN MAY RESULT IN HAZARDOUS

RADIATION EXPOSURE 1“

LASER OUTPUT ..... 0.6 mW Max. (CW)

WAVELENGTH . . . . . . 790 nm .

. ..

ICAUTION-INVISIBLELASERRADIATIONWHENOPENAND I

INTERLOCKSDEFEATED.AVOIDEXPOSURETOBEAM.

ADVARSEL-USYNLIGLASER STR~LING VED ~BNING, NiiR

SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION. UNDGAUDS HTELSE

FOR STRALING.

VARNIN6- OSYNLIG LASER STRALNING NAR OENNADEL AR OPPNAD

OCHSPiiFtR ~R URKOPPLAO. STR~LEN AR FARLIG.

VORSICltT -UNSICHTBARE LASERSTRAHLUNG TRITT AUS. WENN

]IDECKEL 6EOFFNET UNOWENN SICHERHEITSVERRIEGELUNG I

IIUBERBRiiCKT lsT. NICHT, oErdsTRAHL AUSSETZEN.

VARO! Avattaessaiasuoialukitusohilettaessaoletalttiina

nakymtitliimalle la;era~t~ilylle. Ala katso ateeseen.

-1-

.. . . . . . . i

“. .-

BEFORE USE OR TRANSPORTATION

(1)

(2)

(3)

(4)

(5)

(6)

;)

(2)

“’y

When earring the unit, be sure to remove A

any discs which may be inside. -. .

Press the POWER “OFF”. (~) STANDBY INDICATOR

qOPEN /CLOSE

\c)

CD mechanism :Moving stan

CD mechanism :Home position

The STANDBY indicator “lights”. (Q)

Then unplug the power cord from the AC outlet.

Before use

Remove the shipping screw from the rear of

the unit. (@)

This screw is used to secure the CD mechanism

during shipment and should be retained for

the future use. (@)

SHIPPING SCREW.”’ GREEN ARROW

(412 055 5204) “’

CATTION LABEL

(614 286 4159)

;)

(2)

(3)

(4)

POWER

Before transportation

Turn on the power and remove all discs from

the unit. (@)

Turn the POWER OFF. (@)

The STANDBY indicator lights.

Then unplug the power cord from the AC outlet.

Reinstall the shipping screw.

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

:●IMPORTANT!

:Before use remove this shipping screw.

~The removed screw should be retained by

;reinstalling the screw to the point indicated green arrow. ~

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

-2-

..... . . . w

WHAT TO DO IF

If the operation of the unit or display is not normal,

or you wish to clear the contents of the memory.

1. Disconnect the power cord’s plug from the

electrical outlet.

2. Press the RESET button for at least 20 seconds.

3. Connect the power cord.

4. Press the POWER button to turn the power on. m

[gjj---”-” -..:: ..!?.5’.

am% w

..”

REMOVAL AND INSTALLATION

“e

●

(1)

(2)

(3)

(1)

(2)

(3)

(4)

Press the “POWER” button and check that the STANDBY LED lights.

“\

Disconnect the power cord’s plug from the electrical outlet. ./:

All wiring should be returned to the original position

after work is completed.

First have ready many the new FIXERS (61 4129 2496)

f\”

for replacement.

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

‘+\\\\\A

CABINET .:

Remove the 10 rear panel mounting screws. (0)

Press the STOP/EJECT Button.

Open the cassette compartment lid. (@)

TAPE AND

Remove the

\/l/&l

-3-

REMOVAL AND INSTALLATION

c. POWER TRANSFORMER #

(1) Removal the2shield cover mounting screws.(@) -.

(2)

(3)

......

Removal the AC power socket mounting screw. (@)

Remove the 4power transformer mounting screws. (@))

l-. .

‘h /3 /

.“

/’

,,”

d. CHASSIS

(1) Removal the 3TUNER, AMP. &CD P.W.Board mounting screws. (0)

(2) Removal the TUNER, AMP. &CD P.W.Board. (@,@)

(3) Removal the FRONT P.W.Board. (@,@) 4

(4] Removal the 2CD mechanism mounting screws. (@) n

—.

l!-

P.W.B

l—

@%H

,..

-4-

TUNER ADJUSTMENTS

Use aplastic screw driver for adjustments. .Speaker impedance :4 ohm

Standard Output :500 mW #

●FM MODE switch :STEREO --

TUNING FM :87.5-108.0 MHz (200 kHz step )

AM: 522-1,611 kHz(l OkHz step)

TP231 (L)

TP2&l (VT) “-X =TP232(R)

L2101 R2317~~ R2319

FM :;;t4:NA

CT2S1

AM LOOP ❑@-

ANTENNA L2152

L2151

SG RF Level :75 ohm Open Voltage dBPV

Antenna :75 ohm unbalanced ,Modulation :1 kHz,

Dev. .

“+75 kHz (MONO) ~40 kHz (STEREO) t6.75 kHz

ADJUSTMENTS OF FM BAND (PILOT)

Adjusting Connections Position of VTVM

Step Circuit SG Frequency Adjustment Oscilloscope or

Inpu$.. output tuning dial DC voltmeter

./ . .A. .,“..

./,

Tuning Connect to Digital 87.5 MHz Low end L2102 1.1 to.2v

1—DC voltmeter

coverage TP 241 (H), TP 242 (G) 108.0 MHz High end -- lessthan9.5V

Connect to VTVM

TP 231 (H) 90.0 MHz 90.0 MHz L2101

2Tracking FM Antenna Max.

(SG =8dB/N) or TP 232 (H),

TP 233 (G) 106.0 MHz 106.0 MHz ---

SG Modulation :1,000 Hz, 307.

b. ADJUSTMENTS OF AM BAND IRE Loop Antenna

Adjusting Connections

Step SG Frequency Position of

Circuit Adjustment

Input output tuning dial

Connect to Digital

Tuning 522 kHz Low end L2152

1—DC voltmeter

coverage TP 241 (H), TP 242 (G) 1611 kHz High end --

Connect AM SGto Connect to VTVM 603 kHz 603 kHz L2151

2Tracking Test Loop TP231 (H)or

(SG =80 dB/V) TP232 (H), TP 233 (G) 1404 kHz 1404 kHz CT251

-5-

VTVM

Oscilloscope or

DC voltmeter

1.00 t0.05 v

lessthan 9.5 V

Max. I

....,.,..

CD CHANGER OPERATION DESCRIPTION

●

This set is capable of stocking and playing up to 3CDs.

While playing aCD, other discs can be replaced.

In this case, press the button for the disc No. you wish to remove, and

When the “POWER” button is turned off, the power turns off after the

MOTOR &MECHANISM SWITCHES LAYOUT

-., -

then press the OPENICLOSE button.

discs are loaded in the disc trays.

(522)

/; y

OPEN SWITCH (SW1 )1 /

/“ >

........

&$ -

‘“ L!== Y~SLED MOTOR (722)

muIUK\3do) _FJ

SPINDLE MOTOR (701 -6)

DISC 1

DISC 2

DISC 3UP IDOWN MOTOR (624)

(1)

(a)

FUNCTION

OPEN/CLOSE

The rotation of the OPEN/CLOSE MOTOR rotates the

OPEN/CLOSE IDLER GEAR via the BELT and PULLEY,

and the RACK GEAR which is intermeshed with the

OPENICLOSE IDLER GEAR moves forward during ‘OPEN”,

backwards during “CLOSE”. CLOSE END SWITCH (522)

OPEN ICLOSE RACK GEAR OPEN/CLOSE IDLER GEAR (520)

(513) OPEN/CLOSE IDLER PULLEY (519)

.—. —.—. —--- -

CLOSE OPEN

=OPEN/ CLOSE MOTOR(538)

GEAR BLOCK BRACKET

(525) OPEN END SWITCH

-6-

. . . ,.

CD CHANGER OPERATION DESCRIPTION

●

(b)

(c)

The HOME POSITION is reached when the largest

square hole in the UP/DOWN CAM GEAR (602) is

between the SENSORS.

Rotate the UP/DOWN CAM GEAR (602) counterclockwise

(with OPEN/CLOSE during PLAY) or clockwise

(with normal OPEN/CLOSE), raise the GEAR-BLOCK

BRACKET, stop at the selected TRAY, hold the

TRAY GUIDE by means of the OPEN/CLOSE RACK

and save the other TRAY GUIDES.

..- ...

UPIDOWN CAM GEAR 1(ti02)I14

/cm

I1IJ

SENSOR P.W.B (651)

The OPEN/CLOSE motor starts running, the

OPEN/CLOSE RACK moves foward, the TRAY LOCK

LEVER is raised to lock the TRAY, and the OPEN

o~eration commences.

‘r SAVE

%?4 TRAY GUIDE (586)

../-, ,-. ,-

.: ., ,, ,---

W6ii#

<. ..-. /—UP/DOWN

CAM GEAR 2(603)

DRIVE GEAR 2(606)

-7-

“i

----

CD CHANGER OPERATION DESCRIPTION

(d) When the TRAY closes and it reaches the tip of the RIB d

part of the LEFT TRAY GUIDE (589), the LOCK LEVER -.

is lowered to release the TRAY, and loading proceeds.

TRAY GUIDE HOLDER(586)

LOCK LEVER OPEN ~CLOSE

////////////////////// ‘

TRAY LOCK TRAY RELEASE

(2) LOADING

(a) The rotation of the LOAD/UNLOAD MOTOR

rotates the LOADAJNLOAD DRIVE GEAR (552) in the

clockwise direction.

(b) The DRIVE GEAR and the gear portion of the

together and the TRAY movers backwards.

—

-.’. .- ;

completion of TRAY

movement

TRAY mesh

caus

MOTOR to operate and lower the TRAY HOLDER (560),

putting the unit to chucking stayus.

db\LOAD/LJNLOAD CAM GEAR (554)

.....

-8-

~LOADIUNLOAD DRIVE GEAR (552)

.. . . ..-

CD CHANGER OPERATION DESCRIPTION

(d) The rotation of the UP/DOWN MOTOR (624) rotates the

In connection with this, the TRAY HOLDER SLIDE (540)

is moved backwards by the SYNCRO LEVER (632).

---’!

.ii

..,,-

UP/DOWN DRIVE GEAR (605) in the counter-clockwise direction.&

moves forward, and at the same time, the RIGHT SLIDE (57!5)”

,/ i.+..

--- \TRAY HOLDER (560)

“:%-”-—1 I

7A ““’””-”

DRIvE GEAR 2(606) flzy=q .~

‘-’”-lv~-”s’

SYNCROLEVER (632)

UPfCOWN CAM GEAR 1(602)

UP/ DOW DOWN IDLER 2(609)

(605) UP/OOWN 10LER 1(6JJ7)

/UP/ O~WN MOTOR (624)

. .

uP/ DOW

ORIVE

(605) uP/ DOWN

MOTOR (624)

.. P.

..- ..+UP/ DOWN 10LER 1(607)

“\ “

UP/DOWN DRIVE GEAR 2L& ODWN 10LER 2(609)

(606) uP/ DOWN CAM GEAR 2(603)

TRAY HOLDER SLIDE

RIGHT SLIDE

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