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

CD~K777X
CP-K777
SHARP
mJD~~
DIGITAL AUDIO
SERVICE MANUAL
No. SX544CDK777X1
CD-K777X CP-K777
• Intheinterestsofuser-safetythesetshouldberestoredto itsoriginal conditionandonlypartsidenticaltothose specifiedshould beused.
INDEX TO CONTENTS
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
Page
SHARP CORPORATION
CD:.K777X
CP:-K7Z7
CD-K777X
• General
Po:wer source:; Power
consumptlon:
Dimensions:·
Weight:
Amplifier
Output
power:
Input
terminals:
Output
terminals:
• Compact
Type: Signal
readout:
Rotational Error
correction:
Quantization: Filter:
DIA
converter: FreCluency response: Dynamic Wow,and
,-----------------------------~
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE
,j""
J
section /
disc
playersection
speed:
range:
flutter:
OPERATldNMANUAL'
:.
AC
110/127/220/230-240 V,
SO/60Hz .
.200W,
..
..:
'
Width~
Height; 316 mm (12-7/16") Depth;
8.0 kg
...
PMPO; 400 W (total) MPO; 130 W (65 + 65 (10 % T.H.D.) RMS;
80W (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
SpeakEirs;'8'bhtris' Headphones; 16-50 ohms (recommended; 32 ohms)
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
t-blt
D/A converter ' , .. c
20 - 20,000 Hz 90 dB (1 kHz) Unmeasurable (lessthan 0.001
270nim
329mm
(17.6Ibs.)
(40W
(V!deoslgna.l)
;
(10-5/8")
(12-15/16")
W)
+40W)
,,"
a.igital
% Wpeak)
,'-'
-=~
..
·, ,'
.i
J
filtE\r,
,-;
7
,~~--",
• Tuner section Frequency range:
• Cassette
Type: Frequen¢y response:
Motor: ' Signal/npise ratio:
Bias and Tape speed: Wow
and
Heads:
.)
deck section
erasuresystem:
flutter:
FM;
8$':-TmfMHz
AM; 531 "1
Compact cassette tape 50
-14,000 50 • 15,000 Hz DC motor with electronic governor 55 dB (TAPE 1, playback) 50 dB (TAPE 2, recording/
'.
playback)
. AC
,602kHz
Hz (Normal tape)
(Cr.02
xl
4.76 em/sec (1-7/8 ips.)
0.15 % (WRM$.)." TAPE-l:
TAPE-2;
Piaybackx,1'
Rec9r~lplaYJ;>i3"?I<*:li;
Erase x1".,)'
u rj
CP-K777
• Speaker section
Type:
input
Rated Maximum Impedance: Dimensions:
Weight: 4.9 kg (10.8 ibs.)/each
.
power:
input
..
power:
3-way, Type [160 mm(6-1/2") woofer and 50 mm (2") tweeter and super tweeter] 40W 80W
Bohrns
Width; 210 mm (8-1/4") Height; 316 mm (12-7/16") Depth; 309mm (12-3/16")
Speci'ticai,6rikfor this model are subjectto change without
prior notice.
.
tape) :
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,_,
i;
.~
.
VOLTAGE SELECTION
Beforeoperationg the unit on mains, check the preset voltage. If the voltage is different from your
supply socket cover by slightly loosing the screw to
the
visible indlcationofthe slde',pfypur
QACGA0001AWOO 92LPLUG027
QAC<DB0001
QACCE0001
AWOO
AWOO
"/'.:'.
92LCoRDA1387C
I
III
\
92LCoRDT1699A
localvoi~age.sUde,th~\.h.C
10c~1
)/9Itage.,,:
'92LPLUG155A
_L,==<
Figure2-AC POWERSUPPLY CORIJAND ACPLUG ADAPTOR
'..[ -
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~
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i;
, J f
power
.
,:
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CD·K777X
CD~K777X
CP~K777
NAMES OF PARTS
• 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:
20. CD Play Indicator: ~
21. Spectrum Analyzer/BalanceNolume Level Indicator
~
II
21
I
(0
0
11
12 13
1516
14
18 19 20 21
17
OJ
3 4
I
6~
~
I
.>:
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:
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:
37. Stop Button: •
38. PlayJRepeat Button:
39. Track Up/Cue/Preset Up Button:
40. Track Down/Review/Preset Down Button:
41. CD Pause Button:
42. Digital Echo Control
43. Microphone Level Controls
44. Microphone Sockets
45. Karaoke Maker Switch
II
/'Jv
A/V
~
~
-+011
2423
25
2627
28
22
29
303132333435363738
45 44
46
434241
47
4039
46. (TAPE 1) Cassette Compartment
47.
(TAPE 2) Cassette-cCompartment-
-3-
CD:K777>C
CP~K77'7j
.J .J
• Rear panel
1.
FM
75~ohms
Aerial Terminal
2. Aerial 'Earth Terillinal :
3. AM,l,;;dopcAerial Socket:···· I .
4."
ResetsUtt':'f1"
1.5.
Span Selector' Switch- - "
6.
Video/Auxiliarr(AUdioSlgna.l)
~7,Video/Auxlllary(Video,
'"
L ,
inputSockets!
Sign~I),.,lnPlltSC!~l<e!".
'I
.1
i
0:VideolAu:idliary (Video"Signaij Output Sock-et',.
9.
,Video/Auxil
, \
10.
Speaker
1t, AC Power
12.
AC Voltage
iary
,(Audio Signal) .,OutputSockets
Terminals."··,,,:
Lead'·
S~lector
\, '
14
1
2
3
_---#
__
lI-+-..IfJll-----:'-:--...II
" "."]
~:
~rm~~~~o:::'.
J;~'"~~'~:~ii"}:~~~
.~~
9 .
,;.
;"',;
J,:J~,!,;:
ii',:
i'.';'"7:«JT1::lF}
.,B
.iSpeaker
1~.
Tweeter
14.
Super
15.
Woof~c
16.
,Bass Reflex Dut:t' ,
1~.
:SPeaker Wire
• •Remote
; , . "\ v.'
18.R~moteCQ.ntrgJ
section'
Tweet~r(!
qO!1tr~l<
,
.J
,~
,
__
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TrimsmitterWindow
'.'
j j
• Tuner control section
19.
Preset,Up/Down Buttons:
I
VIA
• CD control section"
20:
Tiack
oi»wn/Review:Buttom
21,'lracl< 22LOiscNurtibet,Se
23.
24.
25.
26.
27.
28.
2~[~aJ~e:.Bu~qn:)i:,
• tape
30.
3~.
32./(TAPE
33~:(TAPE2)
f
3,4. (TAPE
35.,'(TAPE 1) piayButttin:'....
up/Cue
DisclSkip Butto'n I
Play!~~peat
Stop Button: • Memory Button Clear Button Random Button
'Butto~;
iet t,$uttons"
a:Yt!9n:-~?:';":'
,c'
co',1'trors~ction.'
&APE~~)Bevl,.in~
trAPE
2>:FastForWar~'~utto,:,:.~
2),Stop'.'Bunon:.•'.
play·
_,
I .; J
1lSto~
BLltt~n~
Btitt6ii:;~
Button: •
._~
j:~
~
.: "
",,<c,'
,"
.......
/1-+lI
"",:,..,.
,.'_
'.'.
"
-"j
15
16
':1"
:
"
26272829
i")~~''-:
30
31·3-2'133">:',,'
38
=:.l-==-=~="'=;:~U--;,-:-'!
.!:::::::!,J:===4:::::::!.I-!=~:i!tt"'"'
39
40"
41
:>42'.;..".-:~~
I.=:====~~
j-,.- ,o,['J 1
.::.1.J.
1,.:"'1
].'
,
d:,'
34:'
.,,;-
,:
,,;...;..,i
35i i
';j"'/·'L:-',;-,i':.'),"JJ
"
T.'
-"~';
--,>
~
', ',.-
, -.
.-.
36.
Digital Signal Processor Buttons, (SURROUND)
37.
Volume Up/Down Buttons:
38.Balance
39.:
function
40.:
Equalizer Mode Buttons
41.:
Power
42.
Extra Bass Button:
Control' Buttons
Selectqr Buttons
Bulton
X·!3ASS
vIA;
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-4-
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:,
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..
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'SETTING
lin this exaMple, the clock is set for the
2.4-hour (0:00) system.
EMO
TUN
CLO
DO
FlYI
S
ING
WN
,
;
,
I
"
ET
¢K
\:
THE
,
-I-
-I
UP
1
I
01
1
2
rv-rv n
W
Ii
'I
31:
,u
U
t
.
411_~-,b;---_
5'1
I'_-~=H=:---
6!1
7il----
+0
switcHIthe time display between the 12-hour
~i"nd24-h~pr
Set the
Disconn~
:3
Press 10 seconds.
!
I connect,lthe AC power lead.
5
performl~teps
, '1
modes:
*OWER
the AC power lead from the AC socket.
t~~
RESET button on the rear panel for at least
Ii
CLOCK
, ,
-
-I
n
'11
-U
11-1
/1'
I I
1-/
I
I
U
I I I I
I
==::::::i
I-
l"GIo
(o~
9
0
<n :'1
-U'u
I I I "
'n
'II
-u·u
, I I I
--+
+-
'-('11
-U-·U
, "
I
tr.;-:
I
'-I.~
". I
switch to STAND-BY.
1 - 7 above.
,
11-
I
I J -
II'
t:
I
000
lIQ
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n' u-
n'
u-
I'"
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U
/,_
u
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o'3l
-
PREPARATION
• When the AC power lead is first connected, the clock indicator will flash at "0:00 CLOCK".
,
/
II
-
r\
-
,
I
0=
~
1 Press the MEMORY/SET bullon.
2 Press the TUNINGITIME (DOWN or UP) bullon to select
the
urne
cflsplay.
"0:00" "AM "AM 0:00"
.....
The 24-hour display will appear.
12:00"..... The 12-hour display will appear.
(0:00 - 23:59)
(AM or PM
.....
The 12-hour display will appear.
(AM or PM
12:00 - 11:59}
0:00 - 11:59)
3 Press the MEMORY/SET button.
4 Press the TUNINGfTlME (DOWN or UP) button to adjust
e~
~)
0
~
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".
RESETTING THE MICROCOMPUTER
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
• The hour setting will not advance even if minutes ad-
n·n
n
u·u
u
vance from
7 Press the MEMORY/SET button.
• The clock starts (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',shappens, follow
step 1.
To change the
1 Press the CLOCK button. Then, within 5 seconds, press
the MEMORY/SET button.
• If the next step is not display will go dark.
"59" to "00".
nparatinq from '0" seconds.
the above procedure, starting from
clock
time:
pertorrnadwithin 5 seconds, the
mtervals,
fl
DEMO MODE
FOR USE
EQUAlIZER(
DEMO)
00
o 0
0.2 m - 6 m (8" - 20')
• Proper
Aim the remote control at the remote control sensor within
3D't>.
Notes
• Replace the batteries if control distance decreases or
• Periodically clean the transmitter window on the remote
• Exposing the sensor on the main unit to strong light Can
• Keep the remote control away from moisture, excessive
• The remote control's usable range is between 0.2
Reset the procedure
• To erase all of the stored memory contents. or
• If the display does
• The unit does not operate properly.
use
of the remote control
with no obstacles, and operate as shown.
concerning
operation becomes erratic.
control and Ihe sensor on the main unit with a soft cloth.
intel1ere with operation. Change the lighting or the direc­tion of the
heat, shock, and vibrations.
and 6 m
use:
unit
(20'.
away
microcomputer
lor
the eases
not function property, or
from the sensor-
by
performing
shown
below:
the
rn (S")
following
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 mode, each of the displays, Equalizer, X-BASS, Digital signal processor and Music calendar, To cancel the demonstration mode, tum off the power. Whilst pressing the EQUALIZER (DEMO) button, tum on the power.
ttle unit enters the demonstration
will be lit, in order. .
o
"'tJ
m
J]
~
o
z
3:
»
z
c:
»
r-
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.
CO
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C
...
K771X
o;K77V'
J-
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Caution on Disassembly ,. ,.,-
Follow
the
below-mentioned notes unit and reassemblingit, to keep it safe performance: "
1,
Take
cassette tape and compact disc q!Jt
2. Be
sure
to remove the power supplY-'ph..\gfrorn the wall
outlet
before
starting to disassemblethra:,uni£.j
3.
Take
off
nylon bands or wire holders
when
removed
disassemblingthe uni#
unit, be sure to rearrange the before disassembling.
4.
Take
suffcient care onstatic electricity
and
other
circuits when servicing.
CD-K777X
STEP
Notel:
Note 2: Witl'ldraw upward straiqht the!flat cable.
Note3: After removidg the FIexlble'
STEP
REMOVAL
Top Cabinet
1 2 Side Panel
Player
CD
3
4
5 Main
6 Mic
7
8
9
10
11
12 13 14
15 CD;Cti'§.nger'·'
16
17
Board
Back
PWB
PWB
Display PWB Tray
Switch PWB
PWB
DSP
Front
Panel
(Note 2)
",:ape
Mechanism
l'urnta~le
Disc
T~ay
CDSeryo
Mecha~ism
co
M~~chani~m
(Note 3)
PWB .1.,Screw
Sensor
IfthEi,powersupplycannotbeturned on,® as
shovJ~
in
rl ; ;
~"
connector w'rap theconcl,uetive alurhinur:rdoitiarbund the front
, end of Fiexible PWB 'so asto! protect the :optical pickup from
eleetrostaticdam.ag16.
CP-K777
REMOVAL
.:
1
Speaker
..
.'
.>
1. Screw ....................... (A1)
1. Screw .......................(B1) xB
Unit 1. Turn on the power supply, 6-1
i --,r.open,;thedip,ctra,y,take
I:,
outtHetray,panel, ana
i I,
Grose,
2. Socket ...,...•
,
$.:Hook..;.:
11.
Screw
! '.
t.,Screw .."
I
Z.,
SockeL
1. Screw ........................(F1) x3
2. Socket....................... (F2) x1
1. Screw .....................(G1) x12
1. Screw
:~
.Screw
Socket
~.
1.
Strew
1-
Screw
,
"
1. Serew.,................;'....;(M1)
1
1.,$drew.; ...............,:......(N1)
PWB
1.gicrew<
2.'sdcke(.
:
1.~crewi'··
':
'::
1.;Sb!.eW'·;
:
;
~
FigUre'!-2
to open the
~}
.
-~\ .
, I " : I j
! !
"
1.
Net
2.Front Pael
"
"
Screw ..................... (A3)
'3.
whed
disassemblingthe
arig
E;!nstire
",'
",'
qf:th~
wl'i~re;they
~ffe'r
servicing~the
lead~\!'Ihere,they
,,'
Ci
",'
;',:.c,
of
i,nt~gf1:jJed
"""
,
V~
"
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'-'
PROCEDURE
(N6te 11 I!'
....
,.......~...,..
'.,
.i.,»
..,......;.;..;.....
....................... (H1)
.................i......
...............L....
...............;~.....
.................i....
....................•.
.............,....
..··........·;:..·..
?'.
..................,..:(R1)
..................,,,,.,(Sl)
".·.'.i'.r
\..f.i);
_.'.
::'...!,••,....
rise
i,
'i::
..•.
(Cl)
..
;.iJ,(C2) x2
i)
....
!.,.
(01)
(E1)
L.·(E2)
-
(J1) )(4 B-2
(j2)
:(81)
;J(~
1.)
,.
,r;;;:
..
~
(P1lx1
j(P~)
(91)~4
,
turrithe
tray. !
j'
r:
PWHfo~the
:!
-:
optical p,ickup
J;
:
PBQCEDURj::
...
:;1..
...:';;........
................ (A2) x1
..
.'.:
....
(A:1)
excellent
uniY:
need be
circ~
"~
-:
FIG,URE
x4
x2
xB 6-1
x5 xB
. 6-3
:';6-2
'"
:0;
x3
~1
x3
xB 6-3
'~}
)(1
",
X4
x3
xt-
...
"
xl
gearby
-:
fro~
"
FIGURE
:7-4
x1
x10
w,ere
,
its -!
:
6-1
'B-1
,
'!
!
:i
,
6-2
,
~-3
-6-3
B-3
7-1 " 74
7-2
7-3
7-3
7-3
hand
,~
I
7-5
I
','
, "
,
,;
-'
the '
..
,"
(F2)x1
(J2)
QSP
CD-K777X
'$ideGabiilet
;(Righ.t):
-.(Sl.}x2
..~J •
es
.j
xamm
(B1
)x2
03x8\nm
..
~~~s>i
~1
PWB
"
..
,,';i
(DJ)
03ksmm;
a~bk
x8
Board
~
-:;,
:
TOp
Cal:lin~t
!
(Jf)
x4
eaxtnrnrn
Figure
- .... '• .1 I
'.
.A
I ';"
c
t
a~I~~~~~y~';:},::::::~03l<8riJm
~.;,.
(K1-)i -s: 03x10mm
oj
~-2~;
:,
Oisplal~WB
(L'.lx6
Ii(IF1 i'x3
'd3xiomm
I .;
,
Figure 6·3
(N1 ) x2
03 x10mm
CD~K777X
CP~K777
Turntable
(R1 ) x1
133
x10mm
Figure 7-1
Figure 7-2
CD Servo PWB
(Q1 ) x4
03
x12mm
Net
(A1) x1
Figure 7-4
Tweeter
Front Panel
(A2)
x1
Figure 7-5
Speaker Box
Speaker
Woofer
Box
Shift Lever
CD Player Base
Gar.ewhen-installingcthecCDchaoger=mecbaoism.-.
Install the CD changer mechanism on the CD player base after
the shift leverhas been set in the highest position.
-74~~~~~~
CD Changer
Mechanism
Sensor PWB
Figure 7-3
-7-
CD-~K777}Q
CP:K777J
REMOVING
TAPE MECHANISM SECTION
'AND~EINSTALLING
THE MAIN
PA~TS
Performsteps 1,2,3,4,5,10anQ11 ofthe disassemblymethod to
remove
How headsi(TAPE
1. Carefully bend the in the direction of
playback head
2. Carefully bend the ,thrre"pawls
di
How to remove
(see Fig.
1. CarElfJlly'8eridthe playback head;pa,wls
direction of upwards.
How to remove the (See Fig. a-3.) :J, "
1. Carefully bend the pinch arrow©,and
Note:
Wh~n
rnountlnq
How to
1. Remove the main belt (E1) x 1 pc..'
I'
Howloretnove]he
1. Remove
the
tape mechanism.
tf;>
remove therecord,/playback and erase
2)rSeeFig;~hi.)
r~cdrcllplay.backhead
the
arrow®;'and remove the.record/
-
i'
remo)i4;l
.I;
I -- .-__' -.•\
J~1)
the~rJljilei
~
rection@.
upw'ards.;:;
and
t~e"piaYlJ.ad~
a-2~)<
the
arrow ©, and (remove tHe playback head
remove the pineh roller (D1) upwards.
installing the pinch roller, pay"attEintion to the spring
method, "
removeltle
the
tapet main belt (E1) x1
'
-'
pinbh~f6l1er
",1
rbrr~!1P9-,\!V.1
":,,
belt
(TAPE~l(~~e
' , '.
bE!1t
(lA'P'E2)
pawls
(At)
x2 pes.,
/ '
x 3 pes.,;II1:thearrow
head ,upward:' ;
-.
,.-
-~\:
_
hea~(TAPE
,
(<;:1)
x2
pcs.,
(TAPE1/2)
in the direction of the
"
""
d'
,
Fig. a-4.)
fr6irdhe
motor side.
',"
.
(Se-e'Fig.
pc..from
the motorside.
--'
.1
1)
inthe
a-4.)
2. Removethetapl=lg:maih belt (F1) x1pc., from the motbrside.
3. Remove the-FFtREW belt (F2)
How to remove the}11otodSee Fig.
1. Remove the belt.
2. Removethe screws (G1)
3. Remove the screws (G2)x2pes,
Note: When mounting the motor, paY1;i\temionto the motor mounting
angle.
xi
pc.
s-s.)
x2 pes.,to removethe motor fixture.
to
... , ..
..
~emdveihe
':
motor.
"
J!
:.
,1 I
,."
'0.1
Pawl (C1) x2
FlgurEl8-2
Pinch
Rhller(D1)
HecordlPlaybaek
Head
"..:""
xi
• I
Pawl
(G1) x2
02 x4mm
Figure 8·5
-8-
FigureS-3
,I
..
~Mot"
,~,.
TAPE 2 . TAPE 1
MaIn
Belt
F1jxf
Main
. (E1b<"1, :; 'I: ,
Figu'reB-4
Motor
B~il
.!,!
ITAPE
I
i
11
CD MECHANISM SECTION
Perform steps remove the CD mechanism.
How to remove the loading motor (See Fig.
1. Remove the screws (A1) x 2 pes., to remove the loading motor.
1,2,3,15
9-1.)
and 16 of the disassembly method to
CD-K777X
CP-K777
Figure 9-1
How to remove the select motor (See Fig. 9-2.)
1.Remove the screws (B1) x 2 pcs., to remove the selectmotor.
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 1pc., 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.
Select Moter
Figure 9·2
( 81 ) x2
02
x5mm
___________________
CD Mechanism
_-CC2}xl..__
- -
~~--------------'Eigure..s~-----------
-9-
(C3)
.
x1
__
-CQ.;l)
xt.
MECHANISM SECTION
" , •
".\
j
DrivirigF.()fCE!,
,
"'tor'que'Meter
Play:TW-2412
,Tor~ue
,
Play:TIN-2111' Fastforward: Rewind:
TW-2231
Test Tape
C?hec;k
Meter
"
'.::
,TW-223.1
"-
,
<:»
-.
;
I
I
,
.,
-
sotc.eo
Adjusting
Point
Normal MTT-111
VRM01;
speed
i:
ITAPE MECHANISM I
.!
Tape 1
Tape2:
:
Tape
g.
)':~i
iSpecified
:Oyer8()g
Over80g
Specified
1,
cr.rJ·
-
TAPE
yalue,
,.,
.
30t060 60toJ 20 g.cm
.-
,
~60t0120
..-
,
Specified
Value
3,000:1:/
30.Hi
,
MECHANISM PWB
ADJUSTMENT
VCl-lue
i
:
: _,I,
,
Tape2
g,.cm
T:
g.cm
Instrument
Connection
Speaker
terminal
(Load resistance:
8 ohms)
TUNER
fl;::low~mn!lH?frElql,JenGY,:·:
fH: High-renge
• AM IF/RF
S' I 400
Igna genera
.Test_Stage.
IF 450 kHz 1,602kHz Band
Coverage Tracking
*1. Input: Antenna, Output:
SECTIO~;,).
-;,
-~I]
frequency
'I
'
-~
z,
or:
Frequency
H30%
AM d
0 rna
Frequency
Display
ltd
uae
~f!ttjl1gl
Adjusting
Parts
T351
531
-
kHz (fL):TS04
1.1±
990 kHz 990kHz (fL):T302
TP302
, •
".
');'
'-j
Instn.'nf~ntj
Connection
i,'.,,:
*1 "2
0.1
V
"1
*2. Input: Antenna, Output: TP301
• FM RF
Signal generator: 1 kHz, 75 kHz dev., FM modulated
Test Stage
Frequency
Frequency
Display
Settingl
Adjusting
Instrument
Connection
Point
Band
Coverage
RF 98.00MHz
-
*1:
Input: 'Antenna, Output: TP301
*2. Input: Antenna, Output:
-
87.50MHz L303(fL): *1
1.85V±50mV
"
..
')
(10,-39
I.>
,'co"
.",
dB);
98.00MHz
'j,';"•.
'1~, \-1
L302
-
".'
, ,
Speaker
)i
terminal
;-
'2
,.
\,-J;
• Detection
Signal generator:
Test
Stage
IF 10.7MHz
10.7
Frequency
MHz, FM sweep generator
Frequency
Adjusting
Instrument
Display Parts Connection
98.00MHz T301(Turn thecore of transformer T301
fully
Input: IC301 Output:
Pin 1 of
TP302
counter­clookwise.)
:-:"
'j
ITUNER PWS:j'-·j
~ITf'302Ii
• FM
Mute
Level
Signal generator: 1kHz, 40 kHz dev., FM modulated
Frequency
98.00
MH"i'
(25dB).L'II)
*1. Adjust so
Frequency Adjusting
,
._
Disp~ay
;
that
:i.
i.'
an outputsignal appears.
Instrument
Parts
I.;,'
'/
'.
Connection
I 'fnp'I,lSOS01
Output:
",'
"j
.,
.r
50301
ANTENNA TERMINAL
CNf'301
.....
-
Sp~aker
'TerrtiinaJ
,
Figure 10 ADJUSTMENT POINTS
-10-
CD TEST MODE
• Setting Anyone <MEMORY>
Setting of TEST mode ] Infication of CD TST mode (See Fig. 11-1) Initialize is not OPEN/CLOSE operation is manual operation, performed,
Thlepickup can be moved by using the
Note: OnIy in STOP state it is possible to slide the pickup with the
VOL. BAL, --- CENTER R.GEQ X-BAS --- OFF
Canceling method - POWER OFF
[!]
00
~~~~
~~~~
CD SECTION
Since this CD system incorporates the following automaticadjustment function, when the pickup is replaced, it is not necessary to readjust it.
the
test
of 4 test modes can be set by pressing several keys as follows.
<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
._-Last memory
.._-FLAT
~
00
[!]
l!J
mode
+<CD> +<POWER> TEST: CD operation test
(»0-) or (.....) key.
input-
~
00
TOC. 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
(»0-) or (.....) key.
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M1MOOIMl
a @
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o
aU
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- -
0=0•D=O
~~
~115~
Figure
o,~
"D.~'
11·1
Automatic
1. Focus Dffset (Fig. 11-2)
2. Tracking offset (Fig. 11-3)
3. ElF balance (tracking errorbalance) (Fig. 11-4)
4. RF level AGC function (HF level: constant)
5. RF level automatic follow-up of the tracking gain
fl
~CD
IUIlHlI:
~~
D.~~
=
adjustment
~
C;
c-
DO
o~
.~
o~
o~
o~
o~
0=
item
=
63
=
=
=
= =
=
=
=
=
=
=
=
= =
=
=
=
=
=
=
250
CD~K777X
CP~K777
=
=
=
=
= =
=
=
=
= =
=
=
=
=
=
=
=
=
=
=
=
4k
1k
~.
~o
~o
~.
~o
~.
~.
16k
0.15
0.50 V
IC1@FD
o.rs
0.50 V
IC1@TO
200 ms 1V/diV
ICl
200 rns
1V/diV IC10
@
TO
TE
This automatic adjustment is performed each time a disc is changed. Therefore, each disc is played back using the optimal settings.
10ms
0.50 V
lCl@FD
lams
0.50 V
@)TO
ICl
~
./
Figure
11-3
11-2
I
r--
FOCUS OFF-SET ADJUST
TRACKING
OFF-SET
1
ADJUST
2
TRACKINGI
ERROR BARANCE
1ADJUST
2
\
V
l.-
~
Figure
0
Enlarged
VIew
TRACKING
OFF-SET ADJUST
1 2
Figure
11-4
-11
Ice0-sERve-PWB-1
-
Figure
11-5
CHECKING POINTS
~--'
-.
~
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--------
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: r: ','
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: " :
I
PICKUP UNIT
--------
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,- -
~,:
,,11
-,~'
,:'
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,
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PU-IN SW
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rigure 12 BLOCK DIAGRAM (1/6)
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XIN XOUT
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SERVO/SIGNAL
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8
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48 5
NJM4565D
OPE AMP.
4
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OUT
+5V
CD-K777X
CP~K777
GND
+5V
DOUT
r,SELIAL CONTROL
-+5V
IC4
IX0039AW
CD CONTROL
MAICON
0;4---------,
+5V
COM,DATA,SCK
TO MAIN MICON
REGULATOR
+7.3V
L-CH GND R-CH
COM DATA SCK
+7.3V(+B9)
CNP?
n
XL2
4.19MHz
+7.3V
Figure 13 BLOCK DIAGRAM
-13-
(216)
FMANT
REMOTE
IN
SPE:-1
SP~-2
SPE·~
I I SPE-4
S'P -5
T1PLAY
T2RUN
PBMUTE
HIGH
C,02
BIAS
TIm
SPEED
; I
I.
~
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I
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~~
ITAPE,I
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MUTE
c---------~---+~--...L.-------+__1f_....=!~f.t_i
TAPE
MOTOR
i
SWITCHING
RUNPLS
T1Cr02
12 Cr02
FULLPROQF ooa
TI
PLAY
STOP
SOLENOID
MECHASTOP
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13
TUNER MUTE
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,
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t
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e
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a
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o~,
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REGULATOR
VOLTAGE
REGULATOR
VOLTAGE
REGURATER
VOLTAGE
VOLTAGE
VOLTAGE
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.,,-ib_
VOLTAGE SWITCHING
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SYSTEM STOP
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~
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0640
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OB37 QB3B
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RESET
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RESET BACKUP
om
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TO OSPUNIT I
TO osp UNIT
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UNIT
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TERMINAL
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2201230_240
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1220V K
1127V
,
rttov
,
,
,
,
,
,
,
,
,
,
-1
-
~
50160Hz
Figure 15 BLOCK DIAGRAM (4/6)
-15
-
FROM
MAINUN~T
+B12
n:j~":":":'':''''-
-
+~11
i" .
+811', .
AOUTR+ AOUTR,..
FigiJte1.6.BLOCK'DIAGRAMJ
-16-
(5,/6)
L
AOCINPUT
BUFFER
)--"=...c:....:.-....-w.-........_
CD~K777X
CP~K777
...
+811
C206 IM2115D
: INPUT JFFER
+811 14
OSPPASS
VOO
L
+811
+812
SWITCHING
--------1
__
-----1
R
VOLTAGE
REGULATOR
10209
MUTE
REGULATOR
VOLTAGE
IC20B
NJM2115D
AMP
IN
L R
+810
OUT
AC
'--
TO MAIN UNIT
--'
SWITCHING
SWITCHING
Figure 17 BLOCK DIAGRAM (6/6)
-17-
0281-0284
A
B
PICKUP UNIT(S06)
I j
c
F
l:).1;-J
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)
I I
CNS!!51
A\,,_'
,
I I I I
I
CNS'S02
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,
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I I
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The numbers 0 to 6 are waveform numbers shown in page 41.
1 2 3 4
Fig~'r~)1~':'WIl~ING6F'~:W.BdA·R6·(1/6)
-18-
5
6
ICD SERVO PWB-F1 I
CD~K777X
CP-K777
--------
CNS2B
000
s
5
,
3
,
1
WH
H
GY
H
D
CNS2A
6 6
4
a
2
1
o
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,
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,
,
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SPINMOTOR
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Figure 19 WIRING OF P.W.BOARD
CNSM
_
-19-
(216)
COLORTABLt:.
8ROWN
BA
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0_
ORANGE
YL YELLOW
BREEN
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BL BLUE VL VjOl.ET
GRAY
GY
WHITE
WHIWi
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PK
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The numbers 0 to is are waveform numbers shown in page 41.
-:1-
'-----------------------------------------------------
'23'
Fig~re.20
SCHEMAJICOIAGRAM,(1/16)
31'01 I V
f:,:~r-
4
-20-
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j
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CD-K777X
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_._-------._-------------------------------------~
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7
Figure 21 SCHEMATIC DIAGRAM (1/16)
-21-
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12
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