Sharp CDK-777-X, CPK-777 Service manual

CD~K777X

CP-K777

SHARP SERVICE MANUAL

No. SX544CDK777X1

mJD~~

DIGITAL AUDIO

CD-K777X

CP-K777

•Inthe interestsof user-safetythe setshould be restored to its original conditionand only partsidentical to those specified should be used.

INDEX TO CONTENTS

Page

SPECIFICATIONS		2
VOLTAGE SELECTION	,..'	2
AC POWER SUPPLY CORD AND PLUG		2
NAMES OF PARTS		3
OPERATION MANUAL		5
DISASSEMBLY		6
REMOVING AND REINSTALLING THE MAIN PARTS		8
ADJUSTMENT		10
BLOCK DIAGRAM		12
SCHEMATIC DIAGRAM / WIRING SIDE OF P.w.BOARD		18
NOTES ON SCHEMATIC DIAGRAM		40
TYPES OF TRANSISTOR AND LED		40
WAVEFORMS OF CD CIRCUIT		41
LCD SEGMENT		42
TROUBLESHOOTING (DSP SECTION)		43
TROUBLESHOOTING (CD SECTION)		47
FUNCTION TABLE OF IC	"	53

REPLACEMENT PARTS LIST/EXPLODED VIEW

SHARP CORPORATION

CD:.K777X

CP:-K7Z7 ,-----------------------------~

FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATldNMANUAL' ,'-'-=~ ,-; 7 ,~~--", .)

:. ; ..

CD-K777X

•	General
Po:wer source:; ,j""				AC 110/127/220/230-240 V,
				SO/60Hz .
Power consumptlon:			....:	.200W,
Dimensions:·J		'		Width~270nim (10-5/8")
				Height; 316 mm (12-7/16")
				Depth; 329mm (12-15/16")
Weight:				8.0 kg (17.6Ibs.)
•	Amplifier section		/ ...

Output power:

Input terminals:

Output terminals:

PMPO; 400 W (total) MPO; 130 W (65 + 65 W) (10 % T.H.D.)

RMS; 80W (40W +40W) (10 % T.H.D.)

VIDEO/AUX (audio signal); 500 mV/47 kohms VIDEO/AUX (video signal) VIDEO/AUX (audio signal);

.'-,-; ,.5GOmV(4Tkohma,...,

.\iiD.Ed/AUX (V!deoslgna.l) SpeakEirs;'8'bhtris',,"

Headphones; 16-50 ohms (recommended; 32 ohms)

.i J ·, ,'

• Compact disc player section

Type:

Signal readout:

Rotational speed: Error correction:

Quantization:

Filter:

DIA converter: FreCluency response: Dynamic range: Wow,and flutter:

s-otscmulti-play compact disc player

Non-contact; 3-beam semi-con ductor laser pickup

200 - 500 rpm CLV, Approx. CIRC (Cross Interleave ReedSolomon Code)

16-bit linear s-tlrnesoversaropnnq a.igital filtE\r, t-blt D/A converter ', .. c

20 - 20,000 Hz

90 dB (1 kHz) Unmeasurable

(lessthan 0.001% Wpeak)

.~

• Tuner section
Frequency range:	FM; 8$':-TmfMHz
	AM; 531 "1 ,602kHz

• Cassette deck section

Type:

Frequen¢y response:

Motor: '

Signal/npise ratio:

Bias and erasuresystem:

Tape speed: Wow and flutter: Heads:

CP-K777

• Speaker section

Type:

Rated input power: Maximum input power: Impedance: Dimensions:

Weight:

. ..

Compact cassette tape

50 -14,000 Hz (Normal tape)

50 • 15,000 Hz (Cr.02 tape) : DC motor with electronic governor xl

55 dB (TAPE 1, playback)

50 dB (TAPE 2, recording/

'playback).

. AC

4.76em/sec (1-7/8 ips.)

0.15% (WRM$.)." '''',, . TAPE-l: Piaybackx,1'j " i;

TAPE-2; Rec9r~lplaYJ;>i3"?I<*:li;

Erase x 1" .,)' .

u rj

3-way, Type [160 mm(6-1/2") woofer and 50 mm (2") tweeter and super tweeter]

40W

80W

B ohrns

Width; 210 mm (8-1/4") Height; 316 mm (12-7/16") Depth; 309mm (12-3/16") 4.9 kg (10.8 ibs.)/each

Speci'ticai,6rikfor this model are subject to change without prior notice.

.

VOLTAGE SELECTION

Beforeoperationg the unit on mains, check the preset voltage. If the voltage is different from your localvoi~age.sUde,th~\.h.Cpower supply socket cover by slightly loosing the screw to the visible indlcationofthe slde',pfypur 10c~1 )/9Itage.,,: .

QACGA0001AWOO 92LPLUG027 ,:

, J f ~.__';'Ij.;

QAC<DB0001 AWOO

QACCE0001 AWOO	"/'.:'.

'92LPLUG155A

92LCoRDA1387C

III

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92LCoRDT1699A

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Figure2-AC POWERSUPPLY CORIJAND ACPLUG ADAPTOR

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CD~K777X

CP~K777

NAMES OF PARTS

CD·K777X

•Front panel

1.Disc Tray

2.Disc Number Select Buttons

3.Disc Skip Button

4.Open/Close Button: ~

5.Music Schedule Indicators

6.Random Indicator

7.Memory Indicator

8.Timer Indicator

9.Extra Bass Indicator: X-BASS

10.Record Indicator

11.Karaoke Maker Indicator

12.Disc Number Indicator

13.Sleep Indicator

14.Frequency/CD CounterlTimeiSleep Time Indicator

15.CD Repeat Indicator: c

16.FM Stereo Indicator: OJ.

17.FM Stereo Mode Indicator: ST

18.Function/CD Track/Preset ChannelNolume Indicator

19.CD Pause Indicator: II

20.CD Play Indicator: ~

21.Spectrum Analyzer/BalanceNolume Level Indicator

22.Digital Signal Processor Indicator

23.Remote Control Sensor

24.Power Switch

25.Function Selector Buttons

26.Equalizer Selector/Demo Mode Button

27.Extra Bass Button: X·BASS

28.Volume Up/Down Buttons: /'Jv

29.Digital Signal Processor Buttons

30.Headphones Socket

31.Record Start Buttons

32.Clock Button

33.Sleep Button

34.Timer Button

35.Memory/Set Button

36.Tuning and Time Up/Down Buttons: A/V

37.Stop Button: •

38.PlayJRepeat Button: ~

39.Track Up/Cue/Preset Up Button: ~

40.Track Down/Review/Preset Down Button: -+011

41.CD Pause Button: II

42.Digital Echo Control

43.Microphone Level Controls

44.Microphone Sockets

45.Karaoke Maker Switch

46.(TAPE 1) Cassette Compartment

47.(TAPE 2) Cassette-cCompartment-

1 2 3 4

I I I

(0 0 OJ 6~

~

.>:

11	12	13
14		1516 17

18 19 20 21

2423

22

25 2627 28 29

303132333435363738

45 44 434241 4039

46 47

-3-

CD:K777>C

CP~K77'7j

						.J .J
•	Rear panel
	1. FM 75~ohms Aerial Terminal
	2.	Aerial 'EarthTerillinal			:
	3.	AM,l,;;dopcAerial Socket:····I				. 'I
	4." ResetsUtt':'f1"			'"	L	,.1
	1.5. Span Selector'Switch- -					"
	6.	Video/Auxiliarr(AUdioSlgna.l) inputSockets!
	~7,Video/Auxlllary(Video,Sign~I),.,lnPlltSC!~l<e!".i
	0: VideolAu:idliary (Video"Signaij Output Sock-et',.
	9. ,Video/Auxiliary,(Audio Signal) .,OutputSockets
	,					\
10. Speaker Terminals."··,,,:
1 t,		AC Power Lead'·\,				'
12. AC Voltage S~lector
.iSpeaker section'
1~. Tweeter
14. Super Tweet~r(! ,
15.		Woof~c	. J
16. ,Bass Reflex Dut:t',
1~. :SPeaker Wire ,~				,
•	•Remote qO!1tr~l<				'.' j
	;	, . "\	v.' __: .. J			j
18.R~moteCQ.ntrgJ TrimsmitterWindow
•	Tuner control section
19. Preset, Up/Down Buttons: VIA
•	I
	CD control section "

20: Tiack oi»wn/Review:Buttom ....... /1-+lI 21,'lracl<up/Cue 'Butto~;._~ j:~

22LOiscNurtibet,Seiet t,$uttons" "",:, .. ,. 23. DisclSkip Butto'n I

24.Play!~~peata:Yt!9n:-~?:';":' ,.'

25.Stop Button: •

26.Memory Button

27.Clear Button

28.Random Button

2~[~aJ~e:.Bu~qn:)i:, ,c'

• tape co',1'trors~ction.'

30. &APE~~)Bevl,.in~BLltt~n~~

3~. trAPE 2>:FastForWar~'~utto,:,:.~

32./(TAPE 2) ,Stop'.'Bunon:.•'.: "

33~:(TAPE2) play·Btitt6ii:;~					",,<c,'
f	_,	I	.;	J
3,4. (TAPE 1lSto~ Button: •					,"	'.'.
35.,'(TAPE1) piayButttin:'....					"	-"j

36.Digital Signal Processor Buttons, (SURROUND)

37.Volume Up/Down Buttons: vIA; '" 38.Balance Control'Buttons

39.: function Selectqr Buttons 40.: Equalizer Mode Buttons

41.:	Power Bulton	-i
42.	Extra Bass Button: X·!3ASS

1

2 " "."] ~:

3_---#__~rm~~~~o:::'.J;~'"~~'~:~ii"}:~~~.~~

9 .

lI-+-..IfJll-----:'-:--...II,;. ;"',;J,:J~,!,;:ii',:

i'.';'"7:«JT1::lF} .,B

14

15	,o,['J"1
j-,.-

16

':1" :

			"
	26272829
			i")~~''-:.::.1.J. 1,.:"'1 ].',
	30 31·3-2'133">:',,'
				d:,'34:'		-"~';
					T.
38		=:.l-==-=~="'=;:~U--;,-:-'! .,,;- ,:				-- ,>
					~	',',.-
		.!:::::::!,J:===4:::::::!.I-!=~:i!tt"'"',,;...;..,i35i i
39
				';j"'/·'L:-',;-,i':.'),"JJ
40"
41
:>42'.;..".-:~~
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-4-

I

01

1

'SETTINGTHE CLOCK

lin this exaMple, the clock is set for

the

2.4-hour (0:00)

system.

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EMOFlYI

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TUN ING

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DOWN

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UP

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+0 switcH Ithe

time display between the 12-hour

~i"nd 24-h~pr modes:

Set the *OWER switch to STAND-BY.

Disconn~ the AC power lead from the AC socket.

:3 Press t~~ RESET button on the rear panel for at least !10 seconds.

Ii

I connect,lthe AC power lead.

5 performl~teps 1 - 7 above.

,'1

•When the AC power lead is first connected, the clock indicator will flash at "0:00 CLOCK".

1 Press the MEMORY/SET bullon.

2 Press the TUNINGITIME (DOWN or UP) bullon to select the urne cflsplay.

"0:00"	.....	The 24-hour display will appear.
		(0:00 - 23:59)
"AM 12:00".....		The 12-hour display will appear.
		(AM or PM 12:00 - 11:59}
"AM 0:00" .....		The 12-hour display will appear.
		(AM or PM 0:00 - 11:59)

3 Press the MEMORY/SET button.

4 Press the TUNINGfTlME (DOWN or UP) button to adjust the hour.

•Press the TUNINGfTlME button once to advance the time by 1 hour. Press for more than 0.5 seconds to advance continuously.

•When the 12-hour display is selected, "AM" will change automatically to "PM".

5 Press the MEMORY/SET button.

6 Press the TUNINGITIME (DOWN or UP) button to adjust the minutes.

•Keep the button pressed for more than 0.5 seconds to

make the time change in 5 minute mtervals,

•The hour setting will not advance even if minutes advance from "59" to "00".

7 Press the MEMORY/SET button.

•The clock starts nparatinq from '0" seconds. (Seconds are not displayed.)

Note:

•In the event of a power failure or when the AC power

lead is disconnected, the clock display will go out. When fhe AC power supply is resumed, the clock display wiU flash on and off to indicate that the time must be

reset.

If th',s happens, followthe above procedure, starting from step 1.

To change the clock time:

1 Press the CLOCK button. Then, within 5 seconds, press the MEMORY/SET button.

•If the next step is not pertorrnad within 5 seconds, the display will go dark.

2 Perform steps 4 - 7 above.

To look at the time display:

Press the CLOCK button.

• The time display will appear for about 5 seconds.

PREPARATION FOR USE

0.2 m - 6 m (8" - 20')

RESETTING THE MICROCOMPUTER

fl

DEMO MODE

EQUAlIZER( DEMO)

00 o 0

• Proper use of the remote control

Aim the remote control at the remote control sensor within 3D't>. with no obstacles, and operate as shown.

Notes concerning use:

•Replace the batteries if control distance decreases or operation becomes erratic.

•Periodically clean the transmitter window on the remote

control and Ihe sensor on the main unit with a soft cloth.

•Exposing the sensor on the main unit to strong light Can intel1ere with operation. Change the lighting or the direction of the unit

•Keep the remote control away from moisture, excessive heat, shock, and vibrations.

•The remote control's usable range is between 0.2rn (S") and 6 m (20'.away from the sensor-

Reset the microcomputer by performing the following procedure lor the eases shown below:

• To erase all of the stored memory contents. or

• If the display does not function property, or

•The unit does not operate properly.

1 Set the POWER switch to STAND-BY.

2 Disconnect the AC power lead from the AC socket.

3 Press the RESET bullon for at least 10 seconds.

When the power is first tumed on, the unit will be in the demonstration mode. When ttle unit enters the demonstration mode, each of the displays, Equalizer, X-BASS, Digital signal processor and Music calendar, will be lit, in order. .

To cancel the demonstration mode, tum off the power. Whilst pressing the EQUALIZER (DEMO) button, tum on the power.

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CO...K771X

.·,P'o;K77V'
C J- _ ,' _ ..j. ... 1
Caution on Disassembly	,. ,.,-

Follow the below-mentioned notes whed disassembling the unit and reassembling it, to keep it safe arig E;!nstire excellent

performance: " ",'",'

1, Take cassette tape and compact disc q!Jt qf:th~ uniY:

2.Be sure to remove the power supplY-'ph..\gfrornthe wall outlet before starting to disassemblethra:,uni£.j

3.Take off nylon bands or wire holders wl'i~re;theyneed be removed when disassembling the uni# ~ffe'rservicing~the

unit, be sure to rearrange the lead~\!'Ihere,they w,ere

before disassembling.

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,

4. Take suffcient care on static electricity ofi,nt~gf1:jJedcirc~its

-!

and other circuits when servicing.

""" "~

CD-K777X

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STEP

REMOVAL

PROCEDURE

FIG,URE

1

Top Cabinet

1. Screw

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

(A1) x4

6-1

2

Side Panel

1. Screw

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

(B1) xB

'B-1

,

3

CD Player Unit

1. Turn on the power supply,

6-1

i

--

,r.open,;thedip,ctra,y,take

'!

I:, outtHetray,panel, ana

!

I

i I,

Grose, (N6te 11

I!'i, 'i::

:i

2. Socket

,...•".·.'.i'.r..•. (Cl) x2

,

...

, $.:Hook ..

....;.:

\..f.i);..;.iJ,(C2) x2

4

Back

Board

11. Screw ,....... ~...

,..i)....

!.,. (01) xB

6-1

! '. ' . ,

_ . ' .

5

Main PWB

I

t.

,Screw ..

" .i.,»::'...

!,••,.... (E1) x5

6-2

Z., SockeL ..

,...... ;.;..;.....

L.·(E2)xB

,

6

Mic PWB

1. Screw ........................

(F1) x3

. 6-3

2. Socket

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

(F2) x1

:';6-2

'"

7

Display PWB

1. Screw .....................

(G1) x12

:0; ~-3

8

Tray

1. Screw .......................

(H1) x3

-6-3

Switch PWB

-

9

DSP PWB

:~ .

.................Screw

i......

(J1) )(4

B-2

~. Socket

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

L ....

(j2) ~1

10

Front Panel

1. Strew ...............

;~.....

:(81) x3

B-3

','

(Note 2)

11

",:ape

.................1- Screw

....i

;J(~1.) xB

6-3

,

,. ,r;;;:

'~}

Mechanism

"

..

,

"

~

12

l'urnta~le

1. Serew .,................;'....

;(M1) )(1

7-1

"

1

",

13

Disc T~ay

1. ,$drew.;

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

......,:

(N1) X4

74

14

CDSeryo PWB

1.gicrew<....................

•. (P1lx1

7-2

,

:

.............2.'sdcke(

,....j(P~) x3

15

CD ;Cti'§.nger'·'

1.~crewi'··

..··

(91)~4

7-3

·;:..·..

Mecha~ism

':

':: ?', .

16

coM~~chani~m

1.;Sb!.eW'·;..................

,..:(R1) xt-

7-3

,;

(Note 3)

~

:

;

... "

-''.

17

Sensor PWB

.1. ,Screw ..................

,,,,.,(Sl) xl

7-3

Notel: IfthEi,powersupply cannotbe turned on, ®

turrithe gearby hand

as shovJ~ in FigUre'!-2to open the rise tray.

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Note 2: Witl'ldrawupward straiqht the!flat cable.

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Note 3: After removidg the FIexlble'PWHfo~theoptical p,ickupfro~the

'

connector w'raptheconcl,uetive alurhinur:rdoitiarbund the front

, end of Fiexible PWB 'soas to! protect the :optical pickup from

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eleetrostaticdam.ag16.

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CP-K777

!

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"

STEP

REMOVAL

PBQCEDURj:: ..

FIGURE

.:

"

1. Net :;1

:';;

'.:

(A:1) x1

:7-4

1 ..

Speaker

"

"

2. Front Pael ................

(A2) x1

7-5

.'

.>

'3.Screw .....................

(A3) x10

CD-K777X

~- :;, :

TOpCal:lin~t!

'$ideGabiilet

;(Righ.t): .j

-.(Sl.}x2 es xamm "

(B1 )x2

.. ~ J • 03x8\nm ..

.. ,,';i

(DJ) x8 03ksmm;

a~bk Board

(F2 ) x1 ~~~s>i

(J2) ~1

," QSP PWB

(Jf) x4 ea xtnrnrn

Figure ~-2~;

-

....

' •.1

I

:,

Oisplal~WB

	.A	c	( L'.lx6
			a~I~~~~~y~';:},::::::~03l<8riJm	,
	t
	I ';"		Ii (IF1 i'x3
			'd3xiomm
			I	.;

~.;,. oj

(K1-)i -s: 03x10mm

Figure 6·3

Turntable

(N1 ) x2

03 x10mm

Net

( A1 ) x1

Figure 7-4

Figure 7-1

Speaker

Box

Tweeter

CD Servo PWB

Front Panel

(A2) x1

Figure 7-5

Figure 7-2

(Q1 ) x4

03 x12mm

(R1 ) x1

133 x10mm

Shift Lever -74~~~~~~

CD Changer

Mechanism

CD Player Base

Sensor PWB

Gar.ewhen-installingcthecCDchaoger=mecbaoism.-.

Install the CD changer mechanism on the CD player base after the shift lever has been set in the highest position.

CD~K777X

CP~K777

Speaker Box

Woofer

Figure 7-3

-7-

CD-~K777}Q

CP:K777J

REMOVING 'AND~EINSTALLING THE MAIN PA~TS

	TAPE MECHANISM SECTION
	Perform steps 1,2,3,4,5, 10anQ11 of the disassembly method		HecordlPlaybaek
	to remove the tape mechanism.	J! :.
			Head

How tf;> remove therecord,/playback and erase headsi(TAPE 2)rSeeFig;~hi.)

1. Carefully bend the r~cdrcllplay.backhead pawls (At) x 2 pes.,

in the	direction of the arrow ®; 'andremove the.record/
playback head upw'ards.;:; .I; /		'-. -~\:
~	- i' I -- .-__' -.• \	, . -_ --' .1

2. Carefully bend the ,thrre"pawls J~1) x 3 pes.,;II1:thearrow di rection@. and remo)i4;l the~rJljilei head ,upward:' ;

How to remove t~e"piaYlJ.ad~hea~(TAPE1)

(see Fig. a-2~)<

'-'

,

1.CarElfJlly'8eridtheplayback head;pa,wls (<;:1) x 2 pcs., in the direction of the arrow ©, and (remove tHe playback head

upwards.

How to remove the pinbh~f6l1er (TAPE 1/2)

(See Fig. a-3.)	:J,	"
1. Carefully bend the		",1
	pinch rbrr~!1P9-,\!V.1 in the direction of the
arrow ©, and remove the pineh roller (D1) upwards.
Note:		":,, "

Wh~n installing the pinch roller, pay"attEintion to the spring rnountlnq method, " "" d' ,

" ..:""

,1 I

,."

'0.1

How to removeltle belt (TAPE~l(~~e Fig. a-4.)

1. Remove the main belt (E1) x 1 pc..'fr6irdhe motor side.

I', . ',".

Howloretnove]he bE!1t (lA'P'E2) (Se-e'Fig.a-4.)

1.Remove the tape t main belt (E1) x 1pc..from the motor side.

2.Removethetapl=lg:maih belt (F1) x 1pc., from the motbrside.

3.Remove the-FFtREW belt (F2) xi pc.

How to remove the}11otodSee Fig. s-s.)

1.Remove the belt.

2.Remove the screws (G1) x2 pes., to remove the motor fixture.

3.Remove the screws (G2) x2 pes, to ~emdveihemotor.

Note: ... , .. ': "

When mounting the motor, paY1;i\temionto the motor mounting angle. ..

Pawl (C1) x2

FlgurEl8-2

Pinch Rhller(D1) xi

• I

Pawl

(G1) x2

02 x4mm	FigureS-3
	Motor	ITAPE11
		I

,I .. ~Mot" ,~,.

TAPE 2 .	TAPE 1
MaIn Belt	Main B~il . !,! i

F1jxf . (E1b<"1, :; 'I: ,

Figure 8·5

Figu'reB-4

-8-

CD-K777X

CP-K777

CD MECHANISM SECTION

Perform steps 1,2,3,15 and 16 of the disassembly method to remove the CD mechanism.

How to remove the loading motor (See Fig. 9-1.)

1.Remove the screws (A1) x 2 pes., to remove the loading motor.

Figure 9-1

How to remove the select motor (See Fig. 9-2.)

1. Remove the screws (B1) x 2 pcs., to remove the select motor.

Select Moter

Figure 9·2

How to remove the pickup (See Fig. 9-3.)

1.Remove the screws (C1) x 2 pcs., to remove the shaft (C2).

2.Remove the stop washer (C3) x 1 pc., to remove the gear (C4).

3.Remove the pickup.

Note:

After removing the Flexible PWB for the optical pickup from the connector wrap the conductive aluminum foil around the front end of Flexible PWB so as to protect the optical pickup from electrostatic damage.

( 81 ) x2

02 x5mm

		CD Mechanism
_-CC2}xl ..	__ . __	-CQ.;l) xt.
- -	(C3) x1
___________________~~--------------	'Eigure..s~---------

-9-

ADJUSTMENT

MECHANISM SECTION

"

, • " . \ j

" -

.!

• DrivirigF.()fCE!, C?hec;k

, "'tor'que'Meter

iSpecified VCl-lue

Play: TW-2412

-.

,

Tape 1:Oyer8()g

i

;

,

Tape 2: Over80g

:

: _,I,

,

,Tor~ue Meter

I

:

Specified yalue,

,

I

.,

Tape 1,

, . ,

Tape 2

"

<:»

-

sotc.eo g. cr.rJ·.

30t060 g,.cm T:

Play:TIN-2111' '.::

Fast forward:,TW-223.1

,.-

60 toJ 20 g.cm

Rewind:TW-2231

~60t0120 g.cm

-

..- ,

Test Tape

Adjusting

Specified

Instrument

Point

Value

Connection

Normal

MTT-111

VRM01; )':~i

3,000:1:/

Speaker

speed

30.Hi

terminal

(Load

,

resistance:

8 ohms)

i:

TAPE MECHANISM PWB

I TAPE MECHANISM I

TUNER SECTIO~;,).					-;, -~I]
fl;::low~mn!lH?frElql,JenGY,:·:
fH: High-renge frequency						, •
• AM IF/RF		'I	' -~			" . ');'
S'Igna generaI or: 400 H30%z,					AM rnaduaeltd		' -: :" j
.Test_Stage.		Frequency		Frequency		~f!ttjl1gl	Instn.'nf~ntj
				Display		Adjusting	Connection
						Parts	i,'.,,:
IF		450 kHz		1,602 kHz		T351	*1
Band		-		531 kHz		(fL): TS04	"2
Coverage						1.1 ± 0.1 V
Tracking		990 kHz		990 kHz		(fL): T302	"1
*1. Input: Antenna,			Output: TP302
*2. Input: Antenna,			Output: TP301

• FM RF

Signal generator: 1 kHz, 75 kHz dev., FM modulated

Test Stage		Frequency		Frequency		Settingl		Instrument
				Display		Adjusting		Connection
							Point
Band		-		87.50 MHz	L303(fL):			*1
Coverage					1.85V±50mV
RF	" ..	98.00 MHz		98.00 MHz	L302			'2
- ')
	I.>	(10,-39 dB);		'j,';" •. -	".'	)i	;-	'j
						,		,. \, - J;
	,'co"	.",		'1~ , \-1	,
*1: Input: 'Antenna,			Output: TP301
*2. Input: Antenna,			Output: Speaker terminal

• Detection

Signal generator: 10.7 MHz, FM sweep generator

Test	Frequency	Frequency	Adjusting	Instrument
Stage		Display	Parts	Connection
IF	10.7 MHz	98.00 MHz	T301(Turn	Input: Pin 1 of
			the core of	IC301
			transformer	Output: TP302
			T301 fully
			counter-
			clookwise.)

• FM Mute Level

Signal generator: 1kHz, 40 kHz dev., FM modulated

Frequency	Frequency	Adjusting	Instrument
	, ._ Disp~ay	Parts	Connection
98.00 MH"i'		I	'fnp'I,lSOS01..... -
(25dB).L'II) ;			Output:Sp~aker
	:i. i.'	I.;,' ",'	"j 'TerrtiinaJ
		.,	,

	*1. Adjust so that an output signal appears.
ITUNER PWS:j'-·j	'/'.
	.r
				50301
				ANTENNA
				TERMINAL

CNf'301

~ITf'302Ii

Figure 10 ADJUSTMENT POINTS

-10-

CD~K777X

CP~K777

CD TEST MODE

• Setting the test mode

Anyone of 4 test modes can be set by pressing several keys as follows.
<MEMORY> + <CD> + <POWER>		TEST: CD operation test
Setting of TEST mode		]
Infication of CD TST mode (See Fig. 11-1)			Initialize is not
OPEN/CLOSE operation is manual operation,			performed,
Thle pickup can be moved by using the (»0-) or (.....) key.
<MEMORY>		<STOP>	<MEMORY>	<STOP>
When the tracking servo is -		The pickup returns to the - When the tracking servo is -		The pickup returns to the
turned on, PLAY is started at		ordinary stop position.	turned off, PLAY is started	ordinary stop position.
once.			at once.
t<PLAY> key	inputTOC. IL is performed, and the ordinary PLAY is performed. - Press <STOP> key. - Stop
	If the following key is pressed during PLAY, it is possible to

specify directly any Track No. <Disc Number 1> key: Track 4 <Disc Number 2> key: Track 9

<Disc Number 3> key: Track 15

Note:

OnIy in STOP state it is possible to slide the pickup with the (»0-) or (.....) key.

VOL. ._- Last memory

BAL, --- CENTER

R.GEQ.._- FLAT

X-BAS --- OFF

Canceling method - POWER OFF

[!]~ 00 ~ !M[gIWl@!ffiW X4iA186 ~

00 [!] l!J 00	M1MOOIMl e) l~©l [p'11!iI
	a @	®~[g[gL9l
~~~~ ~		1M
~~~~	@) @	fjS~

oaU 0=0 • D=O fl a~aCa;~=anll

~J!O ~~ o,~ D-.~'~' ~115~ "D-.~'

Figure 11·1

~CD o~ =				=	=	~.
		.~	=	=	=	~o
IUIlHlI: ~ o~			=	=	=
			=	=	=	~o
			=	=	=
			=	=	=
		o~	=	=	==	~.
	C;	o~	=	=	=	~o
~~			=	=
		o~	=	=	=	~.
	c-		=	=	=
			=	=	=	~.
		0=	=	=	=
D.~~			=		=
	DO 63		250	=		16k
=				1k	4k

CD SECTION

Since this CD system incorporates the following automatic adjustment function, when the pickup is replaced, it is not necessary to readjust it.

• Automatic adjustment item

1.Focus Dffset (Fig. 11-2)

2.Tracking offset (Fig. 11-3)

3.ElF balance (tracking error balance) (Fig. 11-4)

4.RF level AGC function (HF level: constant)

5.RF level automatic follow-up of the tracking gain

This automatic adjustment is performed each time a disc is changed. Therefore, each disc is played back using the optimal settings.

0.15

10ms

Enlarged

0.50 V

VIew

I

0.50 V

IC1@FD

lCl@FD

l.

-V

\

FOCUS

OFF-SET

o.rs

r--

ADJUST

lams

0.50 V

0.50 V

IC1@TO

TRACKING

ICl @)TO

TRACKING

~

OFF-SET

OFF-SET

~

./

1

ADJUST

ADJUST

1

2

2

Figure 11-2

Figure 11-3

200 ms

TRACKINGI

1V/diV

ERROR

ICl @

BARANCE

TO

1ADJUST

200 rns

1V/diV

IC10

2

TE 0

Ice0-sERve-PWB-1

Figure 11-4

Figure 11-5 CHECKING POINTS

-11 -

~--' -.

~ _"Js • ,J	l ~ _ )	'.'f;:"·
	'.,'}

PICKUP UNIT

: -- --------	--------	,7,-- ------ ;,-\~~';_:_					-------1
:	J ; j -. I!			.lI;.		,- - -,~' ,	"l':' L';: ~': .:
:	r: ',':,';,I ~,:					,,11 ,:'	, ..,.,':1:,.
I							I
I							I
:	P	';'.					:
:I		"							:
							I
							I
							I
							I
							I
							I
							I
							I
							I
							I
							I
							I
							,
							I
							,
							,
	FOCUS COIL						-,,;i l-,~
	~~----';-'-"'---~"'"

						J; ~ I
						LASERi':
						,I POWEF(":'
~'						'bONT.ROi?;:
:				.', 'I ~ ,'.' L: --ii;-;'~',';: -:\!~£J~:
'--~--:-__::M;)------''''~-~;:·7i-;;i)'~~~~;~;-----_:
	:'sLioE,l';'",;			, "iS~IN ,",
	MQTOR			MOTOR

.>,	.. "IUr:nq

. '.~.' ~ \ .

F,O J

~J ~ L;'

1-"(1; >;J:~1

,.,q -;1 1,

:;:. ~ : i jl \"/~.;

IC1

LA9231M

SERVdAM'P.

.-,J -"-JJ ".- .,:1,;::'.,'j ~j ,

; -;L;'-. _,-.:~ _ ,:. :'_) " . - '! .. i

CL,DAT,SELIAL CONTRI

-" -',.',c" ; i .. ·

SL+.SL-.DRF

"

ICS

BA6396FP

;,!',:'\,l'j

DRIVER

-,,:-.,

: J.

PICKUP IN

SW4

PU-IN SW

-'.!.

r ,

rigure 12 BLOCK DIAGRAM (1/6)

j I ) ,~" •

-,12-

-------,> XIN XOUT

IC2

LC78620E

SERVO/SIGNAL

CONTROL

r,SELIAL CONTROL

IC4

-+5V IX0039AW

CD CONTROL

MAICON

n

XL2

4.19MHz

CD-K777X

CP~K777

+5V ~+7.3V

8

49~3~~~6		NJM4565D		OUT
		IC3	AUDL;D
48	5	OPE AMP.
		4		+5V
		(D-QUT)

COM,DATA,SCK

TO MAIN MICON

0;4 ---------

,

REGULATOR

+7.3V

+5V

+7.3V

GND

+5V

DOUT

L-CH

GND

R-CH

COM

DATA

SCK +7.3V(+B9)

CNP?

Figure 13 BLOCK DIAGRAM (216)

-13-

FMANT

; I

I.

CD MUTE

~ \ \ I

I . J.,

I FROMCDUNITI c---------~---+~--...L.-------+__1f_....=!~f.t_i

TAPEMOTOR i

SWITCHING

RUNPLS

T1 Cr02

12 Cr02

FULLPROQF ooa

TI PLAY STOP

SOLENOID

MECHASTOP

~~

ITAPE,I ~1\\-

r----

I

I

I

I

I

I

I

I

I

r.. •

J601

MIC1

~Eig!Jre.t4:BlQCK;DIAGBAM;{3L6)

-1:4-

REMOTE IN

		SPE:-1
		SP~-2
		SPE·~
I I		SPE-4
		S'P-5
		T1PLAY
		T2 RUN
		C,02
		BIAS
		TIm
		PBMUTE

HIGHSPEED

I04D1

LC75394E

AUDIOPROCESSOR

GRAPHIC EQUALIZER

~

VIDEO

J4C2:

ICS01

M658~5FP

MICAMP.

CD-K777X

CP-K777

13

'

Flm-

vr

FL702

FL 701

"'

(AC)

FL DIPLAY

~-®W-~.

DSPDIPLAY

F2f&'""

(AC)

I

y~-,

'"

~

~~UT 5

IC701

"

c::::>

KEYMATRIX

VFIP

IC702

6

j.lPD16311

KEYOUT

® SW701_SW710

~PD6700

~, '"

cue

FLDRIVER

FLDRIVER &

~~

SW7'2-SW733

sre

•

CONTROLLER E~J

o

0

Z

0

,

sra

VSS VDDVEE'

KEVIN

o

>

~rI~LED,101 +85 L -- VP

TUNER MUTE

~iII~LE~706 +B5

LE070S

LED709

+610

+8,0

,IN

TO OSPUNIT I

1ti~U~ll~ffi iii,"'[l: OJ

I

TO osp UNIT

,

e

CD·elK

TOCD UNIT

9

CO-GOM

SPE·,

t

, CD·DATA

,w

SPE·2

e

+84 (BV BACK UP)

UNSWITCH

",

'"

SPE-:l

a

,~

SPE-4

,

~ +j RESET

SPE-5

T1 PLAY

,

10751

G~:w"}t~'''"'

,w~

T2RUN

M3B127M5

,"''''''~~

ozas

,

•

MICROCOMPUTER

RESET

BACKUP

CD LD HIL 060,

OBoe

o~,

XL751

BIAS

1

419MHz

e

~:KOSC

COLD M+

M

T,1T2

t

IC801

XL752

CDLOM

'"

52.7B8KHz

a

iID-J

PB MUTE

,"

LOADING MOTOR

~ ,

,

, ,

,

,

I

Z07S1

DRIVER

SYSTEM STOP

I

om

LOADING MOTOR _ ~

0753

§~QQ5e~g~~ ~ffiS:jd:i!~

P"

P.FAIL DET

INVERTER

DRIVER

00

~15!l!999Q

COM

ceca

l::t;jo

CDTfT+M

ce»

M

§~~~~§888"- "-

cCc,,-

:; l:: P

5l

~

0

ooo~

0:; c

~

TfTMOTOR

w<

8

00

~

l-'

~

CD TfT STOP

oe04

CD TfT OPENICLOSE

I

~~~~;E

~

~

DISC NO

~DISCNO

~

~

COUPIDOWN

POWER ON/STB

~	ago,	esse			RELAY				~ MEHCAUP
	OS02
			SWITCHING		PROT
	IC902
	NJM4585D
	OPE AMP

JR

OC,

"

."

C""'~

~¥

as'

,

,

,

6

~~~T

,

~

c

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R-IN

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;,;,OUT

,

0"',

'"0

"'g

,

,~

,- J

RL901

5]J601

STK4152M

1

un

-"

VOLTAGE

If;'

L

~

RELAY

•

POWE~1lo",

,

-,,

HEADPHONES

AV••

'"

j'

REGURATER

L-CH

-"

~'8V

~

SOSO,

r:

.ffG[o

'"'

~ROTECTION

SPEAKER

TERMINAL

."

VOLTAGE

'"'

0850

0682

1

~

REGULATOR

SWITCHING

POWERresr

"'"

.~

aa~,

+5VUN-SWITCHED

TRANSFORMER

."

F654 J::- - - - - - - -, 2~0-24OV

VOLTAGE

~1V)

T4A

I S

SW651

1--"

1(+~1V)

REGULATOR

0651

K

Ll!50V

I

1220V K

VOLTAGE

."

SELECTOR

+5~N_SWITCHED

0640

F6:siti

1127V 'f

,

,

F6B6

VOLTAGE

----0

'"

,

rttov

""

REGULATOR

Ll!50V

,

l250V

I

i

."

VOLTAGE

tasov

,

-

,

TO asp UNIT

+12V MOTOR\

OB~2

,

REGULATOR

,

"m,,~

""

,

AC 11011271

l,

B7

."

CO~

,

,

r-e-+

+12VIANALOG)

06~~

~

,

~

.,,-ib_

,

AC POWER

L _______ -1

SUPPLY COR

OB52-0684

,

,

REGULATOR OBs,

,

2201230_240

T g

,

50160Hz

VR50~

OB35

T.F I

VOLTAGE SWITCHING

lAC)'"J,IACI

REGURATER

VOLTAGE

'"

REGULATOR

ITO CO UNIT I +89

+7.3V(CD)

OB37

TO asp UNIT

ECHO VOL

QB3B

0639

SWITCHING

Figure 15 BLOCK DIAGRAM (4/6)

-15 -

FROM MAINUN~T

n:j~":":":'':''''-

- +~11

i" .

+B12

+811', .

AOUTR+

AOUTR,..

FigiJte1.6.BLOCK'DIAGRAMJ(5,/6)

-16-

CD~K777X

CP~K777

L

)--"=...c:....:.-....-w.-........_ ... +811

AOC INPUT

BUFFER

IC20B

C206

L

R

NJM2115D

IM2115D

AMP

IN

+811

VOO

L

14

R

OUT '--

--

'

: INPUT JFFER

OSP PASS
SWITCHING	MUTE

VOLTAGE

REGULATOR

+811	--------1 10209				+810			TO MAIN UNIT
					VOLTAGE
					REGULATOR
+812	__----- 1						AC
					0281-0284
		SWITCHING			SWITCHING

Figure 17 BLOCK DIAGRAM (6/6)

-17-

A

B

PICKUP UNIT(S06)

I j

c

Fl:).1;-J	A\,,_'	,
"---~"---,	,	,---'===',===============--"/
) I	I	I	I	IDSP PWB-E I
I	I CNS'S02 I	I CNS2!J;! I	I CNS'203 I
I
CNS!!51	TO MAINFW8	TO MIG PW8	TO MAIN?W8
	P27 Sl·G	P2El	P27 B·B

D

J

I

I

L ...i._.~"': _

,

" ,

r ---

E

1
1	_
L

F

J

I

"a , ---

II"

G

"'1'POWl:R PWB·CI

	AC POWERSUPPLYCORD
H	ACnOnV~:JG-24OV
	5W6~H:r

The numbers 0 to 6 are waveform numbers shown in page 41.

1

2

3

4

5

6

Fig~'r~)1~':'WIl~ING6F'~:W.BdA·R6·(1/6)

-18-

CD~K777X

CP-K777

ICD SERVO PWB-F1 I

000

o

	CNS2B			WH	CNS2A
		s			6
				H
		,			4
--------		5			6
		,		GY	2
		3		H	a
		1		D	1

		I CD MOTOR PWB-J I							•
							CNSM
					, ,
					\
					\	Ml				COLORTABLt:.
					I
					I	SPIN MOTOR				BA	8ROWN
					I					~DI~I	~ED
					, f
										0_	ORANGE
										YL	YELLOW
M2										GA	BREEN
SLIDEMOTOR										BL	BLUE
			,							VL	VjOl.ET
										GY	GRAY
			\							WHIWi	WHITE
			\
			I							BK	SLACK
			I							PK	PINK
	, ,	G/
		... _-- /	CNP3A
			,
			~
	'-_,----l-		I
			I
			I
			I				_
			L	~~~

Figure 19 WIRING OF P.W.BOARD (216)

-19-

A

fCDSERVOPWB~F1]----------------------------

,

I

'K

- --

- - -- - '".

+B

i''-/':l-! i\/.

-iF"1f-,~--;===;=+==;=;=:;::::=t==========1======

Rl

[ -0

""

I

B

II

esc

,I

0,1

A

-

4

IeNP,

I

c

I

I

I

, I

D

E

I ?~-0,'+-~~-----'--'---7'-~---'-H~~~-----J

ell

I

105

I

I

BA6396FP

FOOUSfTRACKINGISPINI

, .

SLIDE DRIVER

~:~NnS:lBCN~~:leN~"':i

.;'~~F==E=~;~~~~~~~~~====R_J

WON

Ii -

so- 4

4

F

GND

a

j

R40

~~

HlOl<

0,0Jl

10D1io

31'01

I V

~-

~------,

f:,:~r-

~J"

OJ

I

u

2SA1015,GR

I,

M,

LASERPOWER

-

[

M2

~:In"~~~~~~

+B

G

I

+B

CD MOTOR

•

'-----------------------------------------------------

:....E)t(B.:L-

H

The numbers 0 to	is are waveform numbers shown in page 41.
-:1-	'23' 4	5

Fig~re.20 SCHEMAJICOIAGRAM,(1/16)

-20-

CD-K777X

CP-K777

_._-------	._-------------------------------------	~	.-------------	,
			DISC SWITCH PWB-F2	I

-

R"	C22	ROO
	0.01
\.	"	"

-

-

-	.B

-

,s

",.

iOO< noaa

C"

R51

1lI.7K DHl

02

KRC104M

-a

A55

'0'

I
i i SWl	~~~
I I CD DISC SENSaR	,

-------,

LL

.1

I

I

,B

I

I

I

I

,

I

,

I

~g~

~8~

I

,I

C6i

.1

lODP ,,on.,] T

R61

RSS

I,

10K

10K

"77

S.8K

,B

I

,

IC2

ROS

II

LC78620E

os

'.0

I

SERVO/SIGNAL

2SC2001L

RB1

CONTROL

<1!j1V 7.3V

'70

5_~

~1s

l1

"M

10<

ca,'

1~~~O~

:12

ZD,

O.E!2IJH

"OS

"M

1<

lOaf10

MTZJS.liB

..

RBS

'<

1K

ROO

_ CDSIGNAL

---------------------------------------------------------------'

NOTES ON SCHEMATIC DIAGRAM can be found on page 40.

7

to

1'1

12

Figure 21 SCHEMATIC DIAGRAM (1/16)

-21-