Kenwood CT-203 Service Manual page 9

K L
RE C MUT E
R64 C74
1 . 8K
2 . 2µ5 0
H IGH SPEED
A
A. PLAY: 4 . 8V
C52 NOR SP
NORMAL SPEED
2 200P
Cr O2 : ON
OTHER: 0V
7 0 µSW
R56
Q2 0
2 2K
REC: 0 V
6 . 0V
OTHER
6 . 0V
Q13
DUBB I NG
NC
: 0. 7V
6 5 4
V r e f
MPX
DOLBY
1 2 3
B / C NR
6 1
1 A
L 7
( R- CH )
6 2
Q14
6 3 R50 2 . 2K
0 . 3V R48
6 4 R92 1 8K
1 µ50
6 5 6 . 0V C46
3 . 9K
REC: 0 V
1 µ50
5 B I T
6 6 6 . 6V C42 OTHER
DAC
DUBB I NG
6 7 6 . 6V
: 0. 7V
1 µ50
6 8 6 . 0V C44
E. VOL
6 9 6 . 6V
7 0
GND 7 1
7 2 6 . 6V
1 µ50
7 3 6 . 0V C43
E. VOL
7 4 6 . 6V
1 µ50
7 5 6 . 6V C41
5 B I T
1 µ50
7 6 6 . 0V C45
DAC
1 µ50
RE F 7 7 5 . 8V C85
7 8 6 . 1V R49 2 . 2K
7 9 6 . 0V
8 0
DOLBY
NC
1 A
B / C NR
( L- CH )
6 5 4
MPX
V r e f
1 2 3
L 8
6 . 1V R53 2 . 2 K
7 0 µ S W
R55
Q19
2 2K
C51
2 200P
R98
11K
R63
Q2 1
1 . 8K
Q2 2
4 0 0 / 1 2. 5 K OSC
SELECT L EVEL
( 3 8 )
8 . 7V( REC )
Q4 7
R155 180 1 / 4W
10 µ50
C110
VR3
2 2K ( B )
REC: 0 V
VR1
OTHER : 12. 4V
10K( B )
0 . 4V
A. MOTOR
Q4 5 Q1 2 Q1 1
ON: 0. 7V
Q4 8 OFF: 0 V
REC: 4 . 9V
A. N / H SW D3 3
OTHER: 0V
0 V
0 . 4V
Q4 6
M N
R260
1 00K
4 0
S23
3 9
R253
S24
1 K
3 8
( 38 ) ACSP A MECHA
I C 1
3 7
( 37 ) ACPM
BOT TOM V I EW
0 . 6V
3 6
( 36 ) ASOL
3 5
µ - COM
BCSP
( 35 )
3 4
( 34 ) BCPM
3 3
VSS
2 . 5V 3 2
XTAL B MECHA
X1
2 . 5V 3 1
10MHz
EX TAL
3 0
RESET
0 . 6V
2 9
( 29 ) BSOL
2 8
7 0 NSP
2 7
( 27 ) BI AS
0 V
2 6
( 26 ) 7 0 HSP
2 5
LEVEL L
Q2 3
4 . 6V
RE C: 4 . 9V
OTHER: 0V
( 5 )
( 1 1 )
( 1 3 )
( 8 )
( 9 )
( 1 0 )
( 7 5 )
( 1 9 )
( 2 2 )
( 2 3 )
Q6 7 Q6 8
4 . 9V
R193 1 0K
4 . 6V
0 V
RESET
4 . 6V
I C 8
C140
1 µ50
R195
1 2
OU T I N
1 K GND
Q5 8
3
HI SPEED HI SPEED: 11. 9V HI SPEED
: 0V NORMAL SPEED: 0V : 0V
NORMAL NORMAL
SPEED SPEED
VR4
: 4. 6V : 4. 9V
R211 2 2K( B ) R212
Q65 Q66
1 6K 16K
VR2
( 38 ) ( 35 )
R213 10K( B ) R214
Q61 Q62
2 0K 2 0K
B. MOTOR
ON: 0. 7V
( 37 ) ( 34 )
O FF: 0 V
Q5 9 Q60
R207 R209 R208 R210
4 . 7K 4 7K 4 . 7K 4 7K
D3 4
( 36 ) ( 29 )
Q6 3 Q64
R215 R217 R216 R218
4 . 7K 4 7K 4 . 7K 4 7K
O P
6 5
6 G
(65)
6 6
5 G (66) 5 . 0V
6 7
4 G (67)
GRID 6 8
3 G (68)
R223
6 9
100K
2 G (69) 2 . 2K
7 0 - 19. 5 V
5 R225
1 G (70) 8
7 1 7 +
VFDP 6 R227
7 2 0 V –
I C 6
VDD
2 / 2
7 3 4 . 9V 5 . 0V
NC
7 4
A R/ P
7 5 PH DET
ERASE
7 6
B R/ P R224 1 00K 2 . 2K
7 7
5 . 0V NC 3 R226
+
7 8 1
CE 2 R228
–
7 9 0 V
I C 6
PHB 4
8 0 1 / 2 5 . 0V
PHA
I C 10
1 8
A0 VCC
4 . 9V
2 7
A1 NC
3 6
A2 CLK ( 21 )
4 . 9V
4 5
VSS DATA ( 20 )
4 . 9V
- 19. 5 V
P- ROM
* W221
POWER SUPL LY
* F1
1 1. 9V 2 4. 7V
0 . 8A 250
Q5 5
CN15 CN14
* *
3 . 6V
Q5 6 Q5 4
D1 2 D1 1 D1 0
R186
4 . 9V
1 0K
C130
2 2µ35
D1 3 1 9. 4V 2 4. 0V
4 . 9V 4 . 9V
D2 1 D7
D2 7
( 7 )
D2 8
( 6 )
+ 1 2V AVR
( SYSTEM I C OSC,
PBEQ)
PHONE
- 13. 2 V
1 2. 8V I C 9 2 8. 6V
R262 8.2
*
3 1 2 8. 6V
2
0 . 6V
* W45
D2 3
R197
330
R199 100K
R200 100K
D2 4
R198
330
- 19. 5 V
- 13. 4 V
D1 7 D1 6 D1 5
- 19. 5 V Q5 7 - 44. 0 V
- 36. 2 V - 11. 5 V
Q R
CN7
1 CW
2 CCW
3
KR3
X2 8 - 27 8 x - x x
4 KR2
5 KR1
DESTI NAT I ON
MODEL
6
F1
NAME
7 F2 COUN TRY
(70) 8 1 G
CT-2050 USA
9 2 G
(69)
EUROPE
KXF-W6010/(E)
(68) 10 3 G
GENERAL MARKET
(67) 11 4 G
CT-203 USA
12 5 G
(66)
EUROPE
KXF-W4010/(E)
(65) 13 6 G
GENERAL MARKET
(62) 14 S1
2 2K
15 S2
(61)
15 0K
(60) 16 S3
(59) 17 S4
18 S5
(58) MODEL
ABB. UN I T NO.
(57) 19 S6 NAME
(56) 20 S7
(55) 21 S8
CT-2050 0 - 10
K, P
2 2K
(54) 22 S9 / KS1
2 - 71
X, T, E
1 50K
KXF-W6010/(E)
(53) 23 S10 / KS2
Y, M 0 - 21
(52) 24 S11 / KS3
CT-203 K, P 0 - 11
(51) 25 S12 / KS4
X, T, E 2 - 72
KXF-W4010/(E)
26 S13 / KS5
(50)
Y, M , E1 0 - 22
(49) 27 S14 / KS6
(48) 28 S15 / KS7
29 S16 / KS8
(47)
(46) 30 S17 / KS9
(45) 31 S18 / KS10
32
4 . 9V (44) S19 / KS11
33 S20 / KS12
( M T YPE )
34 S21 / KS13
(41) 35 S22 / KS14
X2 8 - ( C/ 8 )
(40) 36 S23
(39) 37 S24
TF
1
38 GND
39 5 V
1 15V
2
3
2 30V
4
POWER
TRANSFORMER
TEST MODE
5
R124 TEST1
- 13. 7 V
10 K
6
7
M. ADJ . A . ADJ .
4
X 2 8 - ( H / 8 )
D4
– ~
S1
+ ~
X 2 8 - ( C / 8 ) ( K, E T YPE )
CN4
WH1
TF
1 1
2
3
1 15V
4 2
C122 0 . 022 3
1 3. 7V
J 7 2 30V
4
POWER
TRANSFORMER
X 2 8 - ( H / 8 )
SYSTEM
CONTROL
S1
J 3
DATA
BUSY
S I GNA L L I NE
RE CORDI NG
GND L I NE
GND
+ B L I NE
- B L I NE
KXF-W4010(CT-203)
/W6010(CT-2050)(K) (1/2)
CT-203/2050/KXF-W4010/W6010
Y26-4360-10
S T
T O X 2 8 CN8
A
2/ 2
F1
W45
UN I T NO .
CN14 , 15
ABB. W2 21
R262
K, P 0 - 10 YES NO
T, E, E1 2 - 71
NO YES
M 0 - 21
K, P 0 - 11 YES NO
X ,T, E, E1 2 - 72
NO YES
Y, M 0 - 22
K1 D2
C8 9, 9 0, 105
W29, 4 7, 5 1
1 1 1, 142 ,
6 1 , 6 5
C13, 14 C9 3, 9 4
Q2 9~ 4 4, 4 9
2 2 2~ 2 24
R127 , 12 8 , 1 3 1
2 2 7
13 2, 1 37 ~ 14 4
4 7 0P 2 2 0P NO YES
6 8 0P 1 5 0P YES NO
CN1
1 1
2 2
X 2 8 - ( F / 8 )
1 10 - 1 20V
2 20 - 2 40V
S33
CN1
1 1
2 2
L I NE