Kenwood LVD-K9200 User manual

CD CDV LD PLAYER
LVD-K9200
SERVICE MANUAL
KENWOOD
|
© 1994-2 PRINTED IN JAPAN
B51-4814-00 (0) 559
Front glass
Metallic cabinet Knob (1~10)
(B10-1995-04)
(A01-3057-01) — (K29-5814-03)
“2, Ce eee 7
Lasir amc
mena Sia wb SSS SSS eS SSS Se Se Se SS
Knob (11~20)
(K29-5815-03)
Dressing panel
(A21-1849-12)
SS SS SSS Sp
Wow 9s 8 7 8: a.
Knob (Phones level)
(K29-4377-04)
Foot (Front)
(J02-1002-05)
Panel ass'y
{(A60-0466-12)
Power cord bushing
(J42-0083-05)
Phono jack (Audio output)
(€63-0109-05)
Knob (#, B)
(K29-5789-04)
AC power cord*
(E30-)
|
|
|
|
|
Knob (Mic vol.)
(K29-5787-04)
Knob (Hit master)
(K29-5788-04)
Cylindrical receptacle (V S. out)
(E56-0006-05)
Foot (Rear)
(J02-1067-05)
Phono jack (Aux in)
(E63-0100-05)
In compliance with Federal Regulations, following are reproduc-
tions of labels on, or inside the product relating to laser product
|_Safety.
KENWOOD-Corp. certifies this equipment conforms to DHHS
Regulations No. 21 CFR 1040. 10, Chapter 1, Subchapter J.
DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM.
Phono jack (V output, aux in)
(E13-0313-05)
Slide switch*
($62-0001-05)
* Refer to parts list on page 75.

LVD-K9200
2
CONTENTS/ACCESSORIES
CONTENTS
ACCESSORIES ............cscccsssssnecesccorsensscensnsnsereceseseseees 2 8. MPX balance and assist level circuit (X25-5410) ...30
CONTROL si fos chciss Racssisccscvasbaccetipibeasasecpecdeeestsseseteantee 3 9. Key control LED lighting up circuit ............. 31
REMOTE CONTROL OPERATION ...............0:cceeseees 4 10. Key operation, VR control and
DISASSEMBLY FOR REPAIR .............::cscsssssseesreeeeees 5 lesson return function control
BLOCK DIAGRAM .uuu........c cece cece ceceetenececoncecesseneeseees 7 with the microphone (X25-5410).............. 32
CIRCUIT DESCRIPTION ADJUSTMENT ..............:cscccccsssssesssssecssssssesersscecersees 33
1. Flow chart for disc starting ............::ccseecees 11 WIRING DIAGRAM 0... ccc cceessassereccssssecenenseees 40
2. Test Mode .......ccccccccccsssecseecesseeescesssceesesseseeeees 14 PC BOARD (COMPONENT SIDE VIEW) ................ 41
3. Description of components ...........:.scesseee 17 SCHEMATIC DIAGRAM ...........cccssccecescceesseeneeeeeeee 49
_4, Main u-com : M37451M8-329SP (X35-, 1C11) ...... 24 EXPLODED VIEW : MECHANISM. ................c0c0cecee 69
5.
Sub
u-com
:
uPD75238GJ-088
(X25-,
1€301)..........
26
EXPLODED
VIEW
:
UNIT
uuu...
eeseececssssneneeeensees
73
6.
Z
Servo
(X29-2450)
...........cesesecseessseeeeeetneeeeees
28
PARTS
UIST
iescccesenacivesetides
he
ciccsesiacesccecdesiccsctiasesteceys
75
7.
Vocal
mode
circuit
(X25-5410)
............:cseeeees
29
SPECIFICATIONS
...............cccccsesseeeeenes
BACK
COVER
*Refer
to
the
following
service
manual,
if
need
description
about
item
of
table.
Service
manual
parts
No.
:
DP-950
(B51-4351-00),
LVD-320
(B51-4629-00),
LVD-K101
(B51-4260-00)
[unit
Reftio.
|
PartsNo.
[|
_Funetion
Name
|
Reference
service
manual_|
Reference
page
esr
[en
|
eaters
amp
—SCSC~C~C“~Ss~sSC“‘“‘C‘i
OCC
Die
en
cae
oe
ro
SC
ey
al
Tics
|
cao002am
|
Analog
audio
signal
processor
|
_vb320~+(|_—=P2a_—
Ge]
extes008d
|
Bigial
signal
processor
|
vos
——=«dT=SCi‘i
x35-2120
|
Tics
|
Sws87285
|
Disital
filter
&
D/A
converor_|
_vo-320—=«dY;C(ti‘i
Video
FM
signal
demodulation
|
Lvo-azo
«|=
[Pas
IC4
IC6
IC62
YVL151C
Video
signal
processor
LVD-320
ACCESSORIES
*
Audio
cord
+
Video
cord
¢
AC
plug
adaptor
(E30-0505-05)
(E30-1427-05)
(E03-0115-05)
:
M
type
only
a
aN
4 a
Le A
ed
~
(Except for some areas)
+
Remote
control
unit
*
Battery
(AAA/R6)
For
the
unit
with
a
European
AC
plug
(A70-0945-05)
(-)
in
areas
other
than
Europe.
Battery cover (A09-0114-08)
Note
related
to
transportation
and
movement
Before transporting or moving this unit. carry Out the following
Operations.
1.
Turn
the
power
ON
but
do
not
load
a
disc.
aks
2.
Wait
a
few
seconds
and
verify
that
the
display
Ap
aise
shown
appears.
3. Turn the power OFF.
4. Fasten the transportation screw into the base
screw hole.

LVD-K9200
CONTROL
Music
calendar
(1~20)
Play
indicator
Audio
channel
|
indicators
Pause
indicator
Music
calendar
(1~20)
RANDOM indicator
SIDE B
indicator
PROGRAM
indicator
SIDEA
Indicator
CX indicator(L)
>
Eh
Cex
:
6
7
8
9
10
:
pe
11112
1314
1916
17/18
19
20|!
|
:
CHAP
TRACK
3344121314
151617
1819
20:
B
eee
eee
Pere
eee
ee
eee
EE
ane
elated
Ne
eRRSSESTITAS
ETS
ert
(AUTO BAUSE [MAGIC VOICE] M-ST P CyMRranoo a i (RIT MASTER
DIGITAL i} fit Oo rm
SOUND ee ee
DISC indicator
DIGITAL MAGIC VOICE REPEAT CHAPTER/TRACK
SOUND
indicator
indicator
number
dispiay
area
indicator M-STOP Display area for TIME/FRAME
indicator number and other information
AUTO
PAUSE
HIT
MASTER
|
ASSIST
VOCAL
indicator
A-B
REPEAT
indicator
indicator
indicator
SINGLE indicator
Display
Remote control Skip keys
signal receptor
DISC
SIDE
A/B
keys
Numeric
keys
Disc
tray
Play/Pause
key
()-2q)
SURROUND
mode
key
MEMO
key
AUDIO
key
Stop
key
with indicator
Open/
REQUEST
key
VOCAL
key
|
ECHO
key
MPX
BALANCE
knob
Close
key
NEE
aa
Sa!
|
oe
a
2
ee
ae
S|
cowmes SCM COON ect
ss £ EG
POWER
‘switch
Headphone
MAGIC
VOICE
key
ASSIST
Microphone
1,
2
jacks/
,
LEVEL
knob
VOCAL
key Microphone
CONTROL
jack
STAND BY PHONES Jack AUTO PAUSE key HIT MASTER key ECHO LEVEL knob |
indicator
Play mode selector KEY CONTROL key MIC VOLUME knob;
3

LVD-K9200
REMOTE CONTROL OPERATION
DISPLAY key KEY CONTROL keys
POWER key
ASSIST VOCAL key
AUDIO
a
MONITOR key
MAGIC VOICE key
SURROUND key
HIT MASTER key REPEAT A-B key
AUTO OIGITAL key REPEAT key
CX
key
CLEAR
key
M-STOP key
RANOOM k
eee
FRAME/TIME
key
P. MODE/
REQUEST
key
MULTI
SPEED
keys
Sechhy
STILUSTEP
keys
Numeric keys
Ptay/pause key
SIDE
A/B
keys
(Al)
for
disc
side
selection
Fast-forward/
Fast-reverse key
(PP. <<)
Stop key (@)
REMOTE CONTROL UNIT RC-LVOK900 Ski ip ki eys
(>>I, I~)
OPEN/CLOSE key
MOOEL: RC-LVOK3900
TRANSMISSION SYSTEM:
INFRARED PULSE SYSTEM

LVD-K9200
DISASSEMBLY FOR REPAIR
. Removing the Tray
. Disconnect the five connectors (@).
.
Remove
the
seven
screws
(@),
then
remove
the
front
panel
and
sub
panel.
. Turn the loading gear ( @), then pull out the tray.
4.
Loosen
the
two
screws
(
@),
then
remove
the
tray.
i
Ww
N . Removing the Mechanism Ass'y
. Remove the two screws (@), then remove the
unit.
. Disconnect the four connectors (@).
. Remove the six screws (@), then remove the
mechanism ass'y.
_
WN

LVD-K9200
DISASSEMBLY FOR REPAIR
3. Removing the Loading Ass'y
1. Disconnect the one flexible cord ( @).
2.
Remove
the
thirteen
screws
(
@),
then
remove
the
front
frame.
Wy
3. Remove the hook (@).
4. Remove the one screw ( @), then remove the unit
and two frames.
5. Disconnect one connector ( @).
6. Remove the three screws (@®), then remove the
loading gear ass'y.

LVD-K9200
.
LVD-K9200
—
; i
®
34
BLOCK
DIAGRAM
BURST 3.S8MHz
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sav
2
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PEPeere
|
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PHASE
|
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ovvVv VV
PHASE
COMPEN
VIDEO
a
oe
|
49
OCT
SMH
ame
30cm
LO
:
_
SS
PHASE
Open
a)
bcm
(x35-
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VIDEO
44:
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|
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er
GEN
DECODE
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Ga
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cot
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13MHz
:
,
+5
3
[auto]
[vi060]
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——
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VIDEO
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|
LVD-K9200
—LVD-K9200
:
BLOCK DIAGRAM.
i
t
i
(X35— DICH
-~—a nen Oh @ oe
>
BURST 3.50M Hz
ame PF
VIDEO D. ca
JISC CONTROL!
(35- )1C62
25
©)
A768
s &27
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OC ~ 3MH2z RE
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S$ OUT
HIF MpxQ'?
o4
STEREG smPxO'*
@ 830R/K9200
ECHO MODEI/2@
ASSIST VOCAL@
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MEMORY /SURROUNDO)'?
|
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AUX IN
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(X35~ )1C63 youT@ (X25- )1C30l
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a oa000 0
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ey on
°
3°
O
O KEY CON LED A @ VOCAL MODE?
QOvocAL MODE!
QKEY CON LED 8
O1C RESET
@ REQUEST
OC~SMHz amp |
=
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F
O OmeQueD
GRIO SEGMENT
(x35- )IC6
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OC~ISKH2
BO Te liom anata ces Seas
ORIVER MODE DETECTOR O
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MOTOR VR
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DETECTOR
a Ela A at a te eh en 4 get

LVD-K9200
—_LVD-K9200
(X35— )ICH
ECHO MODEI72O
CONTROL O
HIFI MPXQ
STEREO/MPXO
ASSIST VOCALO
MEMORY /SURROUNDO
(X25- )IC301
OKEY CON LED B
@ REQUEST
Oc RESET
@ KEY CON LED A @ VOCAL MODE2 @VOCAL MODE!
HEATER é
(X35—- )1C6
D/A
CONVERTER
c
SEGMENT
sz
ges
(X25—-
)1C12
6)
Leh
OUT
D
f
D
X35~
11G4
=
Reh OUT
Db
o
|
HEADPHONES
D) Reh
O
0 MICct
ees
0
3 > x a
O O
O
O
O
qe 8
0 | MIC2
O
meres [footy editor [tr
ORIVER MODE DETECTOR O KEY CON
a
rs
3 x -¢
e a
MOTOR VR
SURROUND

LVD-K9200
CIRCUIT DESCRIPTION
1. Flow Chart for Disc Starting
Tray open state
PLAY key ON
Close the tray and
move the loading
motor to the position
of LOSW (Side A)
Pickup moves
inwards at LD switch
ON in high speed
mode
Pickup moves
inwards at LD switch
OFF in high speed
mode
NO
CD/CDV
(a) YES
LOD
To next page Focus : ON
Disc motor
accelerate
*1 from page 13.
Count FG
time of 1-1/2
turning of disc
TILT servo ON
Unctamp check
20cm or 30cm
dise distinction
Disc motor free run
if disc size is 20cm
160ms WAIT
Disc motor accelerate
if disc size is 20cm
Pickup moves
inwards for 100ms
in middie speed
W
*2 from page 13.
YES
Tracking servo : ON
Disc motor servo : ON
100ms NO
servo lock
YES
=
c=
ca
<>
Feed servo : ON
Read 24 bit data
Read the OQ code
for 100ms
NO
Qcode ?
YES Search the CH-APT.O
Pickup moves
inwards in
middle speed.
*On the way
{for 300ms) feed drive
stops when servo is
unlocked. Then, feed
drive starts when
servo is locked
in TOC reading,
pickup jumps per
128 tracks inwards
when it has
program area
Search the CHAPT.O

LVD-K9200
CIRCUIT DESCRIPTION
CD/CDV ©
Pickup moves
inwards for 640ms
in high speed
Pickup moves
inwards
in middle speed
,
YES
400ms WAIT
Focus ON
Disc servo
acceleration
F
;
YES
TILT servo ON.
Unclamp check.
Disc motor free run.
Pickup moves.
inwards at CD switch
ON in middie speed
64ms WAIT
Tracking servo : ON
Disc servo : ON
(CLV-A)
Feed servo : ON
12
Read the TOC
of pickup
*tn TOC reading,
pickup jumps per
128 tracks inwards
when it has
program area.
TILT servo : OFF
Pickup moves
outwards at
1028 tracks
cDv NO
Search Track No.1
Pickup moves
outwards at
25 minutes in
middle speed
480ms WAIT
FG servo ON
(2496 rpm)
VSENS
Servo lock
is for 160ms ?
YES
VSENS
Servo lock
is for 1 sec. ?
YES
Read 24 bit data
Search 1st music of video
1
|
i
;
:
j
|
]

LVD-K9200
CIRCUIT DESCRIPTION
-
Control
for
inverted
to
side
A
—
side
B,
side
B
>
side
A
13
PLAY mode Side A
Close the tray and
move the loading
motor to the position
of clamp sw (Side B)
Pickup moves Side B
Before judgment of
size or 20cm disc
LDSW (Side B)
FOCUS ON
LOSW (Side B)
FOCUS ON
In starting flow *1
on page 11.
Note : Pickup is not
‘ feed inward for 100ms
In
starting
flow
*2
on
page
11.
on
Side
B,
however
PLAY mode Side B
Disc motor brake
Z servo down
Pickup moves
LDSW (Side A)
Open the tray and
move the loading
motor to the position
of tray down sw
Close the tray and
move the loading
motor to the position
of clamp sw (Side A)
FOCUS ON
Disc motor accelerate
In starting flow *1 on page 17.

LVD-K9200
CIRCUIT DESCRIPTION
2. Test Mode
2-1. Setting the Test mode
This microprocessor built in this unit can be put to
TEST MODE by the just short-circuiting the test pins 3
and 4 on X35-2120 (A/2).
POWER ON
YES Test mode Inspection mode
Size detection
Track No. "00"
display
STOP mode
P-MODE, DOWN
OPEN/CLOSE
Are TEST pin -
short?
YES
Both CD and
LD have been
inspected 2,
Size detection
P-MODE, DOWN
OTHER OPEN/CLOSE
Test mode CD inspection
key processing mode key processing
LD inspection =
P-MODE, DOWN
OPEN/CLOSE
LO inspection mode
key processing
Set mode
(Normai state)
14

LVD-K9200
CIRCUIT
DESCRIPTION
PAUSE] Lights
*
In
inspection
mode,
the
keys
except
the
above
table
works
normally.
*
The
tilt
and
Z
servo
mechanism
are
turned
off
at
2000
frames
only
when
a
20-cm
CAV
is
used,
unlike
the
set
mode
(1800
frames).
*
Since
a
forced
slider
is
used
for the
manual
search,
the counter
may not
operate correctly.
*The
1
O-key
works
as
10-key
only
in the frame
search mode.
[KEY Nare |
TEST MODE (adjustment)
FOCUSING
SEFVO
veecceecscesecsseeee
ON
FOOD
SOPVO
wo.
eecsseeesneees
PLAY]
Lights
FOCUSING SEPVO oo... eeeeeeeeereen ON FOC SOLVO oer eeeeeeetsseeteeteeees PAUSE} Lights
Tracking S@PVO ....ccccsecseeees OFF Z SOLVO os eceseseseecreteerereeneeeeeteete
Stops
the
revolution
of
the
disc
motor.
The
disc
is
kept
clamped.
STOP
and the disc motor stops with the SIDE B clamped.)
SKIP
UP
FL
All
ON——=>
All
OFF
Video
mute
is
OFF
SKIP
DOWN
Changes
the
mode
(inspection)
and
not
open
or
close
the
tray.
“CD: TNo.=1 ~ playback, LD : CHAP.=27 ~ playback
Manual Feed the pickup to outside in the STOP mode.
FWO Track-kicks to outside in the PLAY mode.
Feed the pickup to inside in the STOP mode.
Manual Track-kicks to inside in the PLAY mode.
BWD Feeding of pickup is stopped when the CD start limit switch is turned on.
(If pickup is feed continuously from the SIDE 8, it stops at the SIDE A.)
SPACE
__
|
The
TILT
mechanism
is
turned
on
and
off,
each
time
this
key
is
pushed.
TILT
OFF:
[SPACE]
lights
+10 key or EDIT | Open the tray without changing the mode. lights
CD DIRECT
Changes the mode (inspection) and not open or close the tray.
1 KEY (This operation cannot be performed in the play mode.)
CD : TNo.=1 ~ playback, LD : CHAP.=1 ~ playback
The pickup feed to the inside of the SIDE A, and the disc does not turn,
SIDEA but the SIDE A is clamped.
(This operation cannot be performed, however, while the SIDE A is played.)
the pickup feed to the inside, and the disc is stopped.
SIDE B (This operation cannot be performed, however, while the SIDE B is played.)
After the SIDE A of a 30-cm disc is played, is the SIDE B is turned on,
the disc turns and the pickup is feed.
INSPECTION MODE
(pes ese change normal mode if press Open key.
| ikeY | Still/Step forward
| 2keY Still/Step reverse
[a Key | MulisspeedreverseSOSOSC—~—~—CSC“—s~C‘“‘<;<C;7;C*”
PAUSE Focusing servo .. FOO SOLVO oo. ees ceeeeseceeeeees OFF
SKIP DOWN or
P-MODE
2-2. Keys and functions valid
Tracking SEPVO oc eeesceeeeeeeee ON ~~ Zservo.......
PAUSE
(If the SIDE B has been played, the pickup is sent to the SIDE A,
or P-MODE (This operation cannot be performed in the play mode.)
OPEN/CLOSE | OPEN or CLOSE the tray. Change to inspection mode.
RANDOM
The
Z
servo
is
turned
on
and
off
each
time
this
key
is
pushed.
Zservo
OFF:
[RANDOM]
lights
If this key is pushed while the SIDE A is played or stopped,
OPEN/CLOSE | OPEN or CLOSE the tray. After CD and LD inspection mode,
|S KEY Multi-speed forward
Tracking S@LVO oo. OFF 2 SONVO ose eeeeeeeeseeseteeeetecee ee eees
CD : Direct search to TNo.=1 (SIDE A only), LD : Direct search to CHAP.=27

LVD-K9200
16
CIRCUIT DESCRIPTION
2-3. How to enter the test mode
(a) Test (Adjustment) mode
Turn on the POWER switch with the wrapping pin
shorted to enter the test mode, and the operation
stops with the disc clamped.
Note:
1. CHAP. and TRACK of FL light up at the same time.
2. Test can be continued with the wrapping pin
shorted.
3. When the device is set in the test mode, it must
check for a disc (only to check the type of the disc,
CD or LD), and both CD and LD must stop.
(If a CD is set, it turns.)
4. The auto digital function must be kept turned on in
the test mode.
5. The remote control must work in the test mode.
6. If the "SIDE B" key is pushed while the SIDE A is in
PLAY or STOP mode, the pickup is sent to the inside
of the side B, and the disc is stopped.
7. \f the "STOP" key and “SIDE B" key are pushed in
order while the SIDE B is played, the pickup is sent
to the inside of the side B, and the disc is stopped.
(b) Inspection mode ;
Push
the
SKIP
DOWN
or
P-MODE
key
in
the
test
(adjustment)
mode,
or
open
and
close
the
tray
with
the
OPEN/CLOSE
key,
and
the
following
is
programmed
automatically.
Test
mode
of
LD
:
CHP.
No.27->CHP.
No.28->CHP.
No.29
Test mode of CD : TNo.01-»TNo.02 ,
Note
1,
CHAP.
and
TRACK
of
FL
go
off
at
the
same
time.
2.
A
pause
must
not
be
inserted
between
programs.
3.
All
the
keys
other
than
the
allotted
for
this
operation
must
operate
normally.
2-4. Resetting method of test mode
(a) Adjustment mode
e Push the SKIP DOWN or P-MODE key
— Inspection mode (CD or LD)
¢ Push the OPEN/CLOSE key to open or close the tray
~— Inspection mode (CD or LD)
¢ Turn off the POWER switch > Set mode
(b) Inspection mode
¢ After inspection, open the tray + Set mode
¢ Turn off the POWER switch + Set mode

LVD-K9200
CIRCUIT
DESCRIPTION
3.
Description
of
Components
3-1.
ELECTRIC
CIRCUIT
UNIT
(X25-5410-20)
'—HefNo
[Name
|
UseandFunctions
|
——~—SSS—SCSC
eration
cram
[NMaSesD
(Butter
_——=—SC=idPorAUXinput
chdsignal
|
lexi
[NIMaS6sD—|Invertingamp
__|ForFMaudioinput
chi
signal
Tex
am
NuMasSD
|
Buffer
_—————([ForAUXinput
Rom
signal
Ic3
TC4053BP
Analog
muitipiexer
Control
to
audio
output
of
main
mic
XRU4053B
©
Selected
to
STEREO
(Lch)
signal
or
MPX
(mix)
signal
Selected
to
FM
audio
input
(Lch)
signal
or
AUX
input
(Lch)
signal
Analog
multiplexer
Selected
to
main
mic
audio
or
Echo
generation
mic
audio
¢ Selected to STEREO (Reh) signal or MPX (mix) signal
¢
Selected
to
FM
audio
input
(Rch)
signal
or
AUX
input
(Reh)
signal
TC40538P,
XRU4053B
icecim
[RMaseaD
Baer
Cid
PX
Tc
signal
IC7
TC40538P
Analog
multiplexer
Lch
mute
control
at
HiFi
MPX
XRU40538
Selection
of
mixing
of
MPX
(Lch)
signal
and
MPX
(Rch)
signal
Selection
of
the
maximum
level
of
MPX
(Reh)
ice
(2m)
|
NIMS
Pre-emphasis
amp
_[Foranalogaudio
Rehisignal
Pict
[Numases0
[_ic12__
|
¥ss205F
DSP
|»
KEY
CON,
MAGIC
VOICE,
+
HIT
MASTER,
»
SURROUND,
«ECHO
P1G13
|
TCS1832ASP-10
[Simulated
SRAM
__[ForYSS20SF
Detected
to
Normal
mode
Not
inverted
amp
for
Vocal
mode
(400Hz)
Far
Vocal
mode
(40H)
Not
inverted
amp
for
Vocal
mode
(1.6kHz)
For
Vocal
mode
(1.6kH2)
Not
inverted
amp
for
Vocal
mode
(3.2kHz)
n
1C17
(2/2)
|
NJM4565D
imulated
inductor
For
Vocal
mode
(3.2kHz)
IC
18
TC4052BP,
XRU40528
|
Analog
multiplexer
Selected
to
Vocal
mode
1C19
TC40668P,
XRU4066B
|
Switch
Key
signal
control
(+,
-)
for
mic
>
IC20 TA8409S Motor driver
IC21 NJM4565D ‘oice detection
1C51 (1/2) Not inverted amp
151 (2/2) Not inverted amp
ICS2 (1/2) Inverted amp
IC52 (2/2) Butfer
(C301 [wPO7s236G0-088 [Sub poor
Reset IC
1C303 Inverter
Not inverted amp
Qi ~03 Switch
Mute
MIC1 and MIC2 addition
For mic echo level signal
Control
to
display
section,
Karaoke
section,
and
main
u-com
Reset
to
sub
p-com
.
Driver for Key-con LED
For headphone (Lch : 1/2, Rech : 2/2)
Turning on/off pre-emphasis
Control Tr for mic audio mute
For mic audio
For IC21 (2/2) output
[O91
[OTCI24ES,
UN4212_|
Level
shift
inverter
Q101 2SC2458 (Y, GR),
2$C3311A
(Q,
R)
inverter
Detected
to
Lesson
return
| Q102 [OTCI 24S, UNA212
17

LVD-K9200
18
CIRCUIT DESCRIPTION
[RefNo
|
Name
|
Useand
Functions
|
Operation
For
1C14 (1/2)
output
Driver for grid
For display "4" LED
Protection of DSP with A/D mechanism circuit
Prevention of inverse current
D103,
D104
|HSS104,
1$$133
Logic
circuit
OR
logic
for
*b
"and
"#"
0213
~
0216
|
HSS104,
1$$133
OR
logic
to
detected
circuit
of
Normal
mode
HSS104, For protection from static
HSS104, For sub com control signal
312, 0322-0328 inverse current
830-1080-05
For
*#"
display
:
D304
and
D305,
*b*
display
:
0306,
and
D307
For "4 * display
For key condition display circuit
Light : on "STEREO"
ON: MPX and "HiFi MBX
ON
:
ECHO
MODE2"
(D315),
ECHO
MODE1"
(D316)
B30-1290-05 ON : "MEMORY MODE"
0318,
0319
|830-1290-05
ON
:
“VOCAL
MODE2"
(D318),
VOCAL
MODE1"
(0319)
oO
oO L
0320
B30-1290-05
ON
:
“POWER
ON/STAND
BY"
(when
connected
to
AC
plug)
0329 830-1290-05 ON : "SURROUND"
0330
830-1288-05
For
"4
*
displa
Oo
3-2.
CONTROL
CIRCUIT
UNIT
(X29-24XX-XX)
50-20
:
M,
51-02
:
P
[Name
|
Use and
Functions
|
Operation
NJM4565D
+5V
stabilized
power
supply|
For
voltage
control
STAAS5C
NJM2903D
Comparator
Compare
to
disc
error
signal
with
reference
triangular
wave
for
PWM
conversion
IC4
(1/2)
Detects
the
current
flowing
in
the
motor
to
generate
a
motor
error
1C4
(2/2)
NJM4565D
Inverter
Generates
the
reference
triangular
wave
for
reversing
the
disc
motor
Inverts
the
triangular
wave
on
the
forward
side
on
the
basis
of
OV
Ics
TC74HCO4AP
Inverter
amp
Inverters
(1)
~
(7)
are
for
oscillation
of
the
reference
triangular
wave
for
PWM
conversion
for
the
disc
motor
Inverters
(8)
~
(13)
are
for
oscillation
of
the
clock
(EXT.
CLK)
for
1C12
(HA11529)
IC10
(1/2)
|NJM45650
Inverter
amp
forFG
_|
Shapes
the
output
of
the
photo-interrupter
for
FG
1C10
(2/2)
|
NJM4565D
Inverter
amp
Shapes
so
that
number
of
signals
crossing
the
track
for
tracking
count
by
using
the
tracking
error
signal
iC11
CXA1571S
RF
amp
*
APC
circuit,
¢
Focus
error
amp,
pee
eg
¢
Tracking
error
amp,
*
4D
amp
(RF
summing
amp)
1€12
(1/2)
|
NJM4565D
Error
amp
Generates
a
TILT
error
from
the
difference
of
sensor
output
1C12
(2/2)
|
NJM4565D
Comparator
Compares
the
added
signal
of
the
tilt
sensor
Output
with
a
certain
level,
for
disc
sens
then
makes
signals
to
judge
existence
of
a
disc
TA8410AK
Drive
to
motor
for
Z
servo
TA8410AK
Drive
to
motor
for
TILT
servo
TA8410AK
urrent
drive
to
focus
actuator
(with
heat
sink)
[icia
(ara)
[TaBai0AK
ufrent
drive
to
tracking
actuator
(with
heat
sink)
IC1
IC2
IC3
Qa
(@)

LVD-K9200
CIRCUIT
DESCRIPTION
TA8410AK
For
driving
the
motors
to
open/close
the
tray,
and
clamp
and
unclamp
the
disc
TA8410AK
Power
op-amp
For
driving
the
motor
for
the
feed
servo
and
one
for
moving
the
pickup
ass'y
across
side
A
and
side
8
NJM4565D
Buffer
amp
Conversion
of
impedance
performed
when
the
brake
pulses
Pe
od
for the
tracking
servo
are
added
NJM4565D
Subtractor
Remove
the
brake
pulses
from
the
tracking
error
signals
of
the
stopper
mode
for
stop
signal
of
the
slider
feeder
NJMAB65D
NJM4565D
Conversion
of
impedance
of
the
focus
error
signal
NJM4565D
Window
comparator
|
Compares
the
tracking
error
signal
for
the
stopper
mode
of the slider feeder with a certain level
Stopper pulses are output when the signal
on both (+) side and (-) side are higher than a certain level!
For frequency correction and phase compensation of the 4D signais
sitive phase amp Shapes the detected signals
© Focus servo, ® Tracking servo, ® Slider servo, * TILT servo
Compensates the phase of the focus drive signal
amp
and
generates
error
signals
for
Z
servo
NIMASESD
finverterame
[For
4D
signe
pore
a
and
converts
it
into
the
voltage
of
+5
V
for
driving
the
motor
TSATEQAA
RS)
[iV
saeed
power
swpy|ControlforFL
2Sc0031L
KN)
-[eVepplefiter
|
2801302
(5,
1)
[Switch
[Bllateralswitch
of
FL
filament
DTAI24ES,
UNSI12
[Switch
_—‘[Control
switch
ofFL
filament
DTCT24ES,
UNA212
_
[Switch
2802374
2SA986
(L,
K)
avrippiefites
|
2SA1048
(Y,
GA
2SA1309A
(Q,
R)
Constant-current
Stabilized
power
supply
for
charging
and
discharging
the
triangular
wave
for
PWM
conversion
of
disc
motor
115 (1/2)
C15 (2/2)
1C16 (1/2)
IC16 (2/2)
C17 (1/2)
1C17 (2/2)
1C18
1C19 (1/2) | NJM4565D
IC19 (2/2) |NJM45650
IC20 HA11529
1C21 (1/2) | NJM4565D
ol nivle
S| alels Blo ls Ss oS oO
3/° 3
Q B
o})2 3 8)2|8|8
a} $s
Oo Qa
5 3
|
1C21 (2/2)
1C22
7
<
3
= o
Q
@
3
3D
Qi
Q2
Q3, Q4
8
<
g
Ss e
a
3
&
a
Ss
(2) re)
3
D
®
s
a = Ss
g
Ss
Q N uo ®
2 re]
an
NLD
Q7
Qg9, Q10
Qi
SCA watch
aia __|2s02374
a ESI
Q1s__[orci24e5, una
Q12
N
Gig, Gi7_[OTANZES, UNATT
aie [2801508
3802574
DTCi24e5, UNAZI2
2SK163 (LM
2SA956 (L, K) For laser diode drive
2SC2458
(Y,
GR).
Buffer
Impedance
change
to
AF
signal
2SC331
1A
(Q,
R)
DTA124ES,
UN4112
Controls
to
TILT
servo
gain
down
switch
Qs3
OTC124ES,
UN4212
|
Switch
Controls
to
circuit
when
power
is
turn
on/off,
to
prevent
actuator
from
operating
abnormally
Q54
DTA124ES,
UN4112
|
Switch
Controls
to
feed
servo
gain
change
circuit
Qs1
2SK163
(L,
M)
Switch
Feed
servo
gain
change-over
switch
2SK163
(L,
M)
Switch
Lowers
the
focus
gain
when
power
is
turn
on/off,
to
prevent
actuator
from
operating
abnormally
DTCT24E5,
UNG2T2
[Switch
[Controistovayopen
DTATZaES, UNAII2_[Switeh
19

LVD-K9200
co
CIRCUIT DESCRIPTION
[Ware]
Use and
Functions
Operation
Controls
to
tray
close
Focus
offset
change-over
switch
which
controls
the
reference
voitage
for
the
Z
servo
Focus
offset
change-over
switch
which
controls
the
reference
voltage
for
the
Z
servo
2SK163
(L,
M)
Switch
Holds
a
sample
of
tracking
error
signals
by
using
the
flaw
detecting
signals
in
the
defect
circuit
DTC124ES,
UN4212
|
Switch
Turns
on/off
the
stopper
mode
during
the
slider
feed
control
OTC124ES,
UN4212
|
Switch
Turns
on/off
the
function
to
generate
tracking
brake
pulses
from
the
sum
signal
5
$
OTA124ES,
UN4112
witch
Defect
circuit
on/off
switch
OTA124ES,
UN4112
Z
servo
on/off
switch
Q61
Qs62
Q70
a7i
Q72
Q73
Q74
Q75
2SK163
(L,
M)
Switch
TILT
servo
gain
change-over
switch
Q76
2SK163
(L,
M)
Holds
a
sample
of
focus
error
signals
by
using
the
flaw
detecting
signals
in the defect circuit
O1
D2
Diode
bridge
Bridge
rectification
for
+5V,
+8V
power
supply
DS, 010 HSS104, 188133 For protection
07-08
Ou
7)
enerates
the
voltage
to
give
a
bias
to
the
AC
voltage
of
the
FL
filament
enerates
the
reference
voltage
for
the
-30V
constant-voltage
circuit
for
FL
Q
D12 | HZS30N (82), RO3OES (82)
013 HSS104, 1$$133 For protection
from inverse current
mn
°
S =
Q @
5
o a @
<
Q a
a
@
(9) a
3
a oe @
a o
>
a
g ® o
3
ra) a
<
Q a
a
a rol
4
Ss
a b
<
Q °o
>
a ot a
=
v
<
ioe = @
ao
@ Q.
g §.
ae
ro]
-
Pe] oS
3
014
HZSS5.6N
(B82),
RDS.6ES
(82)
D15
HZS5.1N
(82),
ROS.
1S
(82)
Generates
the
reference
voltage
for
the
+5V
tracking
power
for
u-com
O16
HZS5.1N
(B2),
ROS.1ES
(B2)
|
Voitage
shift
For
control
voltage
shift
to
+5V
constant
voitage
power
supply
D17
HZS5.1N
(B82),
ROS.1ES
(B2}|
Voltage
shift
For
control
voltage
shift
to
-5V
constant
voltage
power
supply
n
DI8
~D21
|
ERAQ81-004
Prevention
of
counter
|
Prevention
of
counter
electromotive
force
in
the
smoothing
coil
and
motor
;
electromotive
force
when
the
PWM
is
driven
ip)
HSS104,
1$$133
Compensation
Lowers
the
contral
voltage
of
the
constant-current
power
supply
for
constant-current
22
023
HSS104,
1$$133
Compensation
for
driver
|
Compensation
for
secure
operation
of
the
triangular
wave
generating
driver
024,
D25
|
S5688B,
1$R139-100
|
Rectification
diode
Rectification
diode
for
u-com
(+5V)
D026,
027
HSS104,
1$$133
For
protection
Lee
ronan
acy
|
DS!
HSS104,
1$$133
For
protection
Diode
used
to
prevent
the
5
V
for
control
of
the
j-com
of
the
down-imit
ea
ee
switch
for
the
Z
servo
from
being
applied
to
the
drive
side
3
HSS104,
1$$133
Voltage
conversion
Adjusts
the
comparator
output
for
sensing
a
disc
to
OV
to
set
the
voltage
oe
eee
|
for
the
j-com
to
OV
when
the
latter
is
negative
OS4
HZS6.8N
(B2),
Control
voltage
shift
|
This
circuit
changes
the
focus
offset
voltage
for
side
A
and
side
8,
and
RO6.8ES
(B82)
generates
the
transistor
switch
control
voltage
when
the
voltage
is
chanesd
Turns
on
and
off
the
feed
servo
gain
change-over
circuit
057
HSS104,
1$$133
For
protection
If
the
feed
servo
gain
is
low,
it
is
adjusted
low
only
|
when
the
slide
moves
inward
D58,
059
For
adjustment
of
the
feed
motor
voltage
For
detection
of
envelope
of
the
4D
signal
OR
circuit
for the
error
voltage
of
Z
servo
and
p-com
control
voltage
|
065
[HSSi04,
1SSi33___
[Switch
Turns
on/off
the
TILT
servo
gain
change-over
circuit
OS

LVD-K9200
CIRCUIT DESCRIPTION
3-3. VIDEO CIRCUIT UNIT (X35-2120-20)
-—HefWe.
[Name
|
Use
andFunctions
|
____—=S=S~S~S~S~SCSpwratIONSC~—“~*™
IC] TC74HCOOAP Shaping of EFM wave farm | Shapes the digital sound wave form, and changes the wave forms of LD, CD,
a ee Change-over LD, CD, EFM | and EFM with the asymmetry and p-com control command (AN)
Asymmetry circuit Then, transfers the signals only when focus is locked by the contral command (FOK)
ee ee and output of IC1 3/4 (For asymmetry)
1C3 CA0002AM FM audio demodulation | ¢ Detector, « Drop-out detection and correction, © CX-NR decoding, « Mute
Digital signal processing | © Relay of bit clock, * Demodulation of EFM data, * Demodulation of sub code |
1C6
Protection of EFM frame and sync signal, ¢ Error correction, ¢ Control of disc servo
T1C5 1172) |NIM4565D | LPF fordisc motor servo _| Filtrates the phase comparison output from the signal processor
|__ic8__|SMSG72BS
__
[Digital
fiter
and
OAC
|
/A
type
2
channels
D/A
converter,
builtin
digital
filter
(@fs)_—
167
ia,
[NuN4s650
[Leh
ference
amp
(ig
|Fitrates
and
replay
PWM
outputs
of
ICB
through
differential
creut
=|
T_1c7
a2)
[NUM4565D_
_____[LchLPF.
(Digital)
|
Filtratesreplayed
audio
signals,
T
1C1012/2)
_|NJM4565D_____—‘|Rchmixingamp
_|
For
replay
audio
signal
andmicaudio
signal
Pict
[a7asime.szesP__[Main
com
[Controls
main
functions
of
mechanical
controletc.
Change-over to analog audio and digital audio
{C13
TC40538P
Switch
For
changing
the
input
from
the
24-bit
code
and
Q
code
to
the
main
p-com
(4P)
XRU4053B
For
changing
the
input
from
the
HALF
OPEN
and
FULL
OPEN
switches
: to the main p-com (15P)
For changing the input from the UNCLPSSW, ACLPSW, and BCLPSW
to the main pt-com (12P, 13P)
[cea [vases [video signal processor | Processing RF signal into deo Snel
R
Li
5
1C55
TC74HC4066AP
Controles
to
sample
hold
of
sub
carrier
B
8
1C58
NJM4565D
For
color
TBC
signal
1c56 | NJM45650 Phase compensation amp for PLL ;
Icsg___ | TC4053BP, XRU40538 For changing the servo characteristics for 30cm, 20cm, LD, CDV, and (D
1C57
NJM4565D
For
sample
hold
of
sub
carrier
|
(C60 NJM4565D Amp Control of inversion and no-inversion modes of the disc motor servo
Amplification of change-over signal of the characteristics of the disc motor sero
p
1C61 NJM4565D Phase compensation amp for disc motor servo
| 163 |MC141621______|Signalprocessor___| » A/D conversion, « Logical Y/C separation, » D/A conversion of video sgrvals_|
| ar___[28c1923(R, 0) ___[AmpforRF signal [Amplifies thefilteredLO-AFsignals
2$C3311A (Q, R)
2SC3311A (Q, R)
25A1048
(Y,
GR)
For
CD-RF
signals
Phase
compensation
and
amplification
of
CD-RF
signais
2SA1309A (Q, R)
2$C2458 (Y, GR) For CO-RF signals Phase compensation and amplification of CD-RF signals
en
* Drop-out correction of video signals, * Digital TBC, * Generate reference signi
© D/A conversion, © Disc servo, * Noise reduction, © 24-bit code separaion
21