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Extracted text from Kenwood DP 3300 D Service Manual (Ocr-read)
Page 1
1.
2.
4.
Remove eight
screws db
retaining the side panels
to
the chassis, and remove
the side panels.
Then remove
six screws @ tixing
the top panel
to the chassis frame,
and remove the top panel.
DISASSEMBLY FOR
HEPAIR
the Mechanism ass'y
the tray toward the
Move
the gear
on the left side of
with your
finger (
@ )
and
Putt
tront (
@ ). \a@
@
5.
Pull up the
four
claws on the tray panel
in the direction
of the arrows and remove the tray panel
by pulling
it
ouT in
the ciirection
@ .
Push the tray back (
G! )
Disconnect three connectors (CN3,
CN4, CN5) from
the
CD plaver
unit (X32-1090-11)
(G
).
Remove four
screws
@ retaining
the Mechanism ass'y
and remove the Mechanism
ass'y by pulling
it slightly
backward thenrupward (
GF ).
Page 2
2
3
5
77
7
10
10
12
12
12
12 12
12
12
121313
13
13 16
16
16
17 6-3. Explanationof
functions
...... 14
7. Signal processor
lG : GX23035
(X32-1090-11 :lC3). 14
7-1. Block diagram 14
7-2. Explanation
of terminals 15
8. Digital output
signal demodulator lC : CXDl075P
7
8
9 9
(X32-1090-11 : lC9) .
B-1 . Block
diagram
B-2. Terminal connection diagram
8-3. Explanation
of terminals
17
...20
21
21
20
20
24
27
4.
5.
E] E] E] E] tr)
I!]E)EElE)u@gE@
EgUE@ @
t@r
,-l l-t *'
L, L, i.[]
CO
NTENTS/THANSPO
RTATI
O N
SCREW
TRANSPORTATION SCREW
DISASSEMBLY FOR REPAIR
BLOCK DIAGRAM
CIRCUIT DESCRIPTION
1. Description of components . .
1-1 . DAC UN rT (X25-2860-1
1) .
. . .
1_2. CONTROL UNIT
(x29-1780-00). . ..
1-3. CD PLAYER UNIT (X32-1090-11)
..... .
2, Circuit description
2-1. DAC lnterface circuit (X25-286O-11)
. .
. . .
2-2. Distortion
correction circuit
lx25=2860-11)....
2-3. Dropout control circuit (X29-1780-00)
Dual D Flip-Ffop lC : TC74HC74F
(X25-2850-00 : lCl,lC4)
3-1 . Block diagram
3-2. Truth table . Hex D Flip-Flop lC : TC74HC174F
(X25-2850-00 : lC3)
4-1 . Terminal connection diagram
4-2. Truth table .
DA Converter : PCM56P-K
(X25-2860-1 1 z
lCl,lC2l
5-1 . Block diagram/Terminal connection
li^^-^-
u tout dI l
S-2. ExJtanation
of terminals
Digitalfifter: SM58O4B (X25-2860-11
: lC4) . .
6-1 . Block diagram
6-2. Explanation of termlnals
TRANSPOBTATION SCREW Before operation, remove the two red
screws attached
to the bottom of the unit used during transport from
the
factory. Remove both screws using a
coin, etc. and, after
removing, retain
them together with the Warranty
card and other documents. When the unit is to be trans-
ported again, be sure replace the two screws to their origi-
nal position.
ATTACHING THE TRANSPORTATION SCREWS
1. Turn the power
ON without loading disc.
2. Turn OFF the power
after the display shows the follow-
inq indication. 8-4.
Explanation
of functions .
. .
9. Microcomputer :
PPD75208CW-040
(X32-1090'11 : lCl1)
9-1 . Terminal connection
diagram
9-2. Explanation
of terminals .
. .
ADJUSTMENT ...
Adjustment
Q6nlrna I rEgrqgs
Abgleich
Description of Signal Waveform,
Connection of
Measuring Instruments 30
VOLTAGECHECKTABLE ...
34
Pc
BoARD (CoMPONENT
slDE vtEvQ
. . . .
1? -
pcBoARD(FO|LSIDEVIEW) ..... .... 38
SCHEMATIC
DIAGRAM 41
EXPLODEDVIEW(MECHANISM) ...49
EXPLODEDVIEW(UNIT) .... 50
PARTS LIST . 51
SPECIFICATIONS . BACK
COVER
3. Install the transportation screws.
Page 18
CIRCUIT DESCRIPTION
o
Input signal description (ex,
CX23035)
1) Digiul audio
data
This LSI uses
16-bit serial digital
audio data' and the
data bits are
arranged from backward
with
respect to
LRCK. As
the period
of clock BCK is
equal to the
data
bit rate, more
than 16
clocks are required for
each word'
For example, when the
signal processor LSI
connected
is CX23035, which
is
a CD signal processor, LRCK
is "H"
during the
L-ch audio data and "L"
during the R-ch audio
data, and the
audio data is shifted in
MSB-first mode
at
the fall
of BCK. These Jactors
can be set by
the above-
mentioned selector
Pins.
LRCK
DATA
BCK
3) Channel status data
By connecting D2 (pin
26) with the write frame
clock
output terminal (wFcK)
of the cD LSl, D3 (pin
25) with
the subcode sync
S0 +
51 output terminal (SCOR)'
D4
lpin 24
with
the subcode O output
terminal (SUBO)
and
CRCK (pin
6) with the
subcode O
error flag
terminal
(CRCF), it becomes possible
to read respectively the
lD0'
iot, COpv
lNHlBlT and
EMPHASIS information from
SUBO and
to
set them on
the specified positions
of the
C-bit data. However,
when there
is no terminal correspond-
ing to cRCF, it
shall be f
ixed a|"H" ' 2)
Master clock
When a 1-sample/48-clock one-chip
CD
lC (CX23035)
is used, a X'tal
oscillator of
3 x 128Fs =
16'9344MH2
shall be
connected across XTAL (pin
13) and EXTAL
(pin 14). The internal circuitray of
this LSI lC
uses the
1/3 clock, which is 5.6MHz, as
the master clock'whilethe
CD uses the output from
192Fs (pin
12) as the master
clock (3
x 12BFsl2 =
8.4672MH21.
It is also possible
to connect a
128Fs (5'6448MH2)
X'tal oscillator across XTAL
and EXTAL
and to use
it
as the common master
clock with
the signal processor
LSI.
Fig.8-3 The category code (subcode
bits 9 and 10)
is input in
DC via
Cg (pin
16) and CiO (pin
5)' With the
CD' the
category code
is (C9,
C10) =
(1'
0) so the
bits are fixed
at C9 =
"H"
and C10 =
"L"'
Note :
D4 (SUBO)
is read at the rise
of D2 (WFCK)'
latched and,
when CRCF =
"H"'
loaded as
the C'bit
data at
the fall
of D3 (SCORI'
lf CRCF =
"L"
'
the Previous value
is held'
With this LSl,
it
is also possible
to input the chanel
status data
in parallel.
In this case' lDO'
lD1' COPY' EM-
PHASIS and category code
are input respectively
to D4'
D5, D6, D7
and C9 and C10 bv
direct DC
inputs'
WFCK
EXCKSBSO
18
SYNC. PATTERN
Fig. 8-4
Page 27
!
I
P
ABG I-EICI-I 1. Abgleich
NR C EG Ell STA ND I] I NGA liGS-
E I IiSTELI,UNC AUSG,{NGS- FI NCTFI I IINN SP I ELER_
E I NSTEI,I,IIN('; AbGLE I UII-
PIINI(T E ABGI,E I CHEI{ FiiR ABB
YCO.D I IiSTELLUN(
Einen Frequenzziihler
zrrischen TPll (CND)
von X32-1090-11
und TP10 (PLCI{)
ancnhl ioRon
Triiger getjffnet
oder
Stop-Betriebsart Den I(ern
der Spule von
L2
von X32-1090-11
rl //) dr6hon'
4.32}{H (a)
a
PRUFUNG DDR
LASERLEISTUI,IG
(lenn PU defek
u sein scheint Ei nen
0ptikleistungsmeter auf den abnehner
setzen. 'I
raSer -geoll
net
'P8
von X32-1090-11(A/4.
an GND
ansch I i eBen.
DIn der
Test-Beirieb-
sart die
CHECI{-Taste
ruf 0N stel len. Der Trii
Ier tiffnet sich, und
de:
.D vird auf 0N cestel lf kzeptabel, wenn
zwischen
100 pY
und 200
rzt.(b)
RF-YERSATZ-
PRU FU NG
Ein 0szilloskop
an Stift 2 (RF)
von
Cll4 von X29-1780-00
anschl ieBen.
GND des 0szi
I Ioskops
an TPl (GND)
cncnh I i aRpn
Trager getjffnet
oder
Stop-Betriebsart Akzeptable,
$enn etrYa -0.
70 (Y) (c)
4 TESTl{ODUS-
E i I{STELLUNC
Testdisc
Tvpe 4
ruf Trager lege und Laden
.llr.hfiih"."
Den Stecker von CNl0
von X32-1090-11(A/4) (urzschl ieBen. Den POliER-Schalter
auf OFF und dann wiede.
auf 0il stellen. Auf dem Display muB
01 oo anSezeiSt rerden. (d)
Trtl{0DNT IAL-
DI NSTELLUNG
lestdisc
Tvpe 4
tuf TrriSer lege und Laden
durchfilhren- Ein 0szilloskop
an Stift 2 (RF)
von
CN4 von X29-1 ?80-00
anschlieBen. Die CHEC(-Taste
driicken.
Der Laser fokussiert
(Tpct
nndr<)
I nnensechskant-
schtaube unter
Mprhan i
Page 44
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Page 56
PART$ LIST x
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54 I indicates
sa{ety critical components'
