Kenwood KC-Z1 Service Manual page 25

A B C D
Q Q
3 7
The DC voltage is an actual reading measured with a high impedance type
1
voltmeter as the AM/FM signal generator is specified to the conditions as shown in MODE
the list right. The measurement value may vary depending on the measuring
instruments used or on the product. The value shown in ( ) is actual reading
FM
measured in the AM made.
AM
(X05-4420-XX)
LOW FREQ
LOW FREQ HIGH FREQ
FM 1.6V 8.0V
AM 1.0V 7.0V
5
VT
2
FM FRONT END
10.7MHz
DT1(W02-2512-05)
DISTORTION
(ST)
MIX
RF AMP C4 TR1
4P
J1
C2
IFT IF
1 ANT 12P
FM 75 Ω FET OUT
GND 2 ANT
AM ANT 3 GND
J2 4 GND
3 5 VT
OSC
C17
15P OUT
6 +B
10.8V
TR2 TR3
C13
8P C14 OSC
BUFF
27P
T E
(FM FRONT-END) TR1 : 2SC2714 L 1 3
TR2 : 2SC2996
TR3 : 2SC2715
4
FET : 2SK302
D1~3 : HVM27 or
SVC212 or
1SV225 or
KV1440
FM +B
5
(X05- )
IC1 : LA1831A-KEN
IC2 : LC7218
IC12 : NJM4565D
Q1 : 2SC2714(R,O)
Q2 : 2SC1845(F,E)
Q3 : 2SC2458(Y,GR) or 2SC3311A(Q,R)
Q7,107~110 : 2SC2412K
Q11 : 2SD863(E,F)
Q102,104,111 : 2SA1037K
6
D3 : RD5.1ES(B2) or HZS5.1N(B2)
D4 : RD3.3ES(B2) or HZS3.3N(B2)
D7,111,112 : MA111
D8 : 1SS133 or HSS104
D11 : RD8.2ES(B2) or HZS8.2N(B2)
w w w
2.5V
X1
7.2MHz
DESTINATION Q107, R138~ C135,
UNIT No. S101 C21,22
COUNTRY ABB. 108 141 136
U.S.A. K X05-4420-12 NO NO NO 0.024 NO
GENERAL MARKET M X05-4420-22 YES YES YES 0.016 YES
C35 470P
C36 470P
C37 470P
C38 470P
7
E F G H
6 3 1 5
MODULATION
CARRIER ANT INPUT
FREQUENCY DEVIATION
98MHz 1KHz STEREO 67.5KHz 7.5KHz(Pilot) 60dB
1000(999)KHz 400Hz MONO 30% MOD 60dB
5.0V C183 10P
FM/AM MPX SYSTEM (FM,ST)
R168 680
IC1
C11
L107 10uH L11
4.7u50
1mH +
+
24 23 22 21 20 19 18 17 16
AM 3.5V(4.1V)
L103
AM
+ + ALC AM AM
OSC MIX RF.AGC
L106
1uH MUTE
R124
BUFF
10K
7
AGC
R3
330 AM AM
IF DET
10.2V
Q1 FM IF
LEVEL
AMP
DET
S-CURVE AM/
1.9V 1.2V
CF1 FM
IF
COMP
FM BUFF
IF FM
8 DET AM/
FM
TUNING
SW
DRIVE
AM
R39 R42
8.2K 100
FM
1/4W
R40 C41
1K 1u50 REG GND
VCC
+
C40
0.022
+ 5.0V
2.1V 1 2 3 2.1V 4 5 6 7 8
Q2 (5.6V) 2.1V
L.P.F. L7
0.6V
9 4 2 2 9 6 5 1 3
1.1V
+
+ Q3
CF2
L12
+ Q102 +
1uH
R111
12.0V
47 11.6V
1/4W R25
11.0V
10K
+
PLL 7.3V
(FM ST)
12.0V Q11
24 23 22 21 20 19 18 17 16 15 14 13 7.9V
+
IC2
PLL R101
+ 33K
X
R139
X X 560 0V
0V
Q107
2 C105
0.47u50
– 1
3
12.0V + +
REFERENCE PHASE DETECTOR R127
DIVIDER CHARGE PUMP 100 8 IC12(1/2)
X
11.6V
Q104 1/4W
+
OPE AMP
1 SWALLOW COUNTER
2 1/16, 1/17 4bit
TUNER MODE
+
12bit :-1.2V
OTHERS:0.7V
PROGRAMMABLE R128
DIVIDER X 100 -15.4V
X
1/4W 5 4 IC12(2/2)
X R138
+ 7 + R126
AM +B Q108 0V 6
560
UNIVERSAL – C106 3.3K
SHIFT REGISTER LATCH 0V
COUNTER 0.47u50
R102
33K
X
1 2 3 4 5 6 7 8 9 10 11 12
CH SPACE
0V 0.8V 0V 0.1V
50uS
11.8V x a EMPHASYS o TUNER DRIVER
(0V) 50KHz(FM)
X S101 9KHz(AM) R157
Q111
TUNER MODE 1K
R43 10K :3.5V
OTHERS:3.2V
. i
R32 1K
5 75uS
100KHz(FM)
R33 1K
3 10kHz(AM)
R34 1K
4
R35 1K
2
I J K L
(X09-4330-10) (2/2)
1 5 0
J1 16.1V
C371
IC24(2/2)
R507 10u50 R511 5 8
L 1 + 7
1K + 100 C377 0V
6
–
PHONO 470P C381 0.012 C383 3300P
R513
R508
R 2 1K R517 270K R519 22K
1K
EQ AMP
R451
L 3 5
330
REC
R452
R 4 24
330
TAPE1
R455
L 5 5 R514 R518 270K R520 22K
330
1K
PLAY
C378 C382 0.012 C384 3300P
C372 – 1
C23 R456 10u50 R512 470P 0V 2
1u50
ST :3.9V R 6 24 +
+ 3 4
MONO:3.0V + 330 100 IC24(1/2)
15 14 13 -16.1V
R459
L 7
330
REC
DECODER
R460
R 8 20
330
TAPE2
STEREO J2
SW
R463
L 1 2 -17.0V
STEREO 330
DRIVE TRIG
PLAY INPUT
SEL.1
R464
FF FF FF R 2 27 IC29
330
(BOTTOM
VCO PILOT R467 VIEW)
DET L 3 4
330
REC
17.0V
PHASE DET R468
R 4 25
330
MD
R471
L 5 2
330
PLAY
9 10 11 12 R472
R 6 27
330
Q Q
+
R475 3
+
L 7 3
330
CD
R476
-17.0V
R 8 26
C116 WH1
330
100P INPUT
J3
SEL.2
R479
L 1
IC30
330
AM:0.6V
(BOTTOM
R12 LD
47K VIEW)
Q7
R480
R 2 22
330
17.0V
R483
L 3 6
330
TV
R484
R 4 23
330
R487
L 5
CN1 4
330
( )
6 13 SD CABLE
/SAT.
( 7 ) 12 ST
R488
Lch 11 Rch
R 6 25
330
R125 10 GND
3.3K
R491
9 Lch -17.0V
L 7
330
MUTE 8 +12V
VIDEO1 INPUT
Q109 7 -12V REC SEL.3
6 T.MUTE R492
IC31
R 8 27
( )
3 5 DATA 330 (BOTTOM
VIEW)
( 4 ) 4 CLK J4
Q110
( 2 ) 3 CE R495
L 1
2
330
( 5 ) 2 DO
17.0V
VIDEO1
1 CH SPACE
PLAY
R496
R 2 27
Rch 330
R499
L 3
3
330
TUNER MODE
:-1.2V REC
u 1 6 3
OTHERS:3.2V y
R151 R500
820 TUNER MODE R 4 26
:4.7V 330
OTHERS:2.5V VIDEO2
R503
L 5 3
330
PLAY
R504
R 6 26
330
M N O P
8 9 2 4
R601
0V C385 82 17.0V 17.0V
10u50 R523 1/4W
R545 0V
16.1V + 3 8
+ 330 + 1 +
330 C413 C417 2
10u50 – C419
100P 100u25
Q70 0V
15.5V
IC27(1/2)
AMP
IC27(2/2)
0V
C418 6 C420
C414 – 7 100u25
100P
R546 10u50 5
+ +
4 0V
-15.5V 330 + 0V
Q71
C386
-17.0V
10u50 R524
0V + 330
R602
82 -17.0V
1/4W
-16.1V
R609 100
SEL ST1
0V 17.0V
C457 R553 + 3 8
+ +
1
330 C423 C425 2
220P
10u50 – C427
100P 10u50
0V 0V
D21 IC28(2/2)
AMP
L
IC28(1/2)
R 0V 0V
C426 6 C428
C424 – 7 10u50
R554 10u50 100P 5
+ +
4 -17.0V
330 + 0V
R608 100
SEL CK
R607 100
SEL DT
0V 17.0V
R537 + 5
8
+ 7 +
330 C405 C407
6
10u50 – C409
100P 0V 0V 10u50
IC26(2/2)
AMP
7 6 3 1 5 1 5 0 8
R612 100
IC26(1/2)
C462 0V 0V
C408 2 C410
220P C406 – 10u50
1
R538 10u50 100P 3
+
+
330 + 0V 4 -17.0V
D23
L
R
( 2 )
-17.0V
R611 100
ATTENUATOR
R610 100
IC32
(BOTTOM
VIEW) L
R
17.0V
R615 100
C467 ( 27 )
220P
D24
L
R
0V 17.0V
R527 + 5
8
+ 7 +
330 C395 C399 6
10u50 – C401
R614 100 100P 0V 0V 10u50
R613 100
IC25(1/2)
m
IC25(2/2)
0V 0V
C400 2 C402
c o C396 – 10u50
1
R528 10u50 100P 3
+
+
330 + -17.0V 4
.
Q R S T
X00-A/5-
WH9
9 8 2 9 9
6/8
CAUTION: For continued safety, replace safety critical
Lt
components only with manufacturer's recommended parts
Rt
A
(refer to parts list). indicates safety critical components.
P2 L
For continued protection against risk of fire, replace only
P2 R
X09-1/2
with same type and rating fuse(s). To reduce the risk of
electric shock, leakage-current or resistance measurements
GND 5/8
+17V shall be carried out (exposed parts are acceptably insulated
from the supply circuit) before the appliance is returned to
B
the customer.
-17V
D GND The DC voltage is an actual reading measured with a high
SEL impedance type voltmeter with no signal input. The
X00-A/5-
measurement value may vary depending on the measuring
WH10
instruments used or on the product.
6/8
CN3
1 Rch(TUNER)
C
2 GND
DOLBY and the double-D symbol are trademarks of Dolby
3 Lch(TUNER)
Laboratories Licensing Corporation. Noise reduction circuit
made under license from Dolby Laboratories Licensing
Corporation.
(X09- ) (2/2)
IC24~28 : NJM4580E 2SA1534A 2SC3940A 2SB772
IC29 : TC9162AF
2SA992 2SD863 2SD882
IC30,32 : TC9164AF
IC31 : TC9163AF 2SC1845
Q70 : 2SA1534A(R,S) 2SC1923
Q71 : 2SC3940A(R,S)
2SC2003
D21~24 : DA204U 2SC2878
SIGNAL LINE
9 2 4 9 8 2 9 9
GND LINE
+B LINE
DTA124ES 2SA1037K
-B LINE
DTC124ES 2SA1576
DTC143TS 2SC2412K
UN4112 2SC2714
2SC2458 2SC3547A
R559 R561 R563 R565 R567
1.5K 1.2K 1K 3.9K 220K
C468
2SB1370 UN4212 2SB1375
220P
2SD2061 UN4216 2SB1587
UN4219 2SD2012
D22
2SC3311A
R560 R562 R564 R566 R568
1.5K 1.2K 1K 3.9K 220K
NJM4565D NJM2279D TC4051BP
R617 100
NJM4580E TC4052BP
R618 100
X14-A/9-
CN3
WH2
1 7/8
-17V
2
+17V
3
D
Rch(VCR3)
4
GND
5 KC-Z1/RC-Z1
Lch(VCR3)
KC-Z1(M) (1/8)
Y05-3140-10
U