Parts List - Kenwood VR-405 Service Manual

A B
TUNER UNIT (X07-31XX-XX) (B/3)
(K,P,M,I,X,Y) TYPE
1
FM FRONT-END
A1 (W02-2622-05)
1 ANT1
RF AMP R2
0-100
C2
FET
10P
ANT2
2
3 GND
GND
4
FET : 2SK302
TR1 : 2SC2714
TR2,3 : 2SC2413
2
D1-3 : HVU202 or
1T362
(E,T) TYPE
A1 (W02-2584-05) FM FRONT-END
E1
RF AMP
J8
FET1
C1 C2 C4
FM 1 1 ANT1 27P 15P 0-5P C6
75
L2 10P
2 2 GND
3
D1
3 3 GND
GND
4
AM
4 GND
FET1 : 2SK302
TR1 : 2SC2714
TR2,3 : 2SC2413
D1-4 : SVC220 or
KV1440
4
VR-405 (X07-3140-10)/VR-406 (X07-3130-11)/VR-414 (X07-3140-11)
DESTINATION R8, R27,
UNIT No. R14 R15 R23 R25 R29
A B C F G E
11 28
COUNTRY ABB.
U.S.A. K
0-10 or 0-11 NO YES 33 100 4.7K 9.1K 16K 6.8K NO YES
CANADA P
DESTINATION C4,35,74, C8,9,70,71 C30,
C25 C26 CF1,2 CF3 IC201 L6,7
ABB. 82,89,90 77,79,80 31
COUNTRY
U.S.A. K
L72-0596 (MS2) NO
YES NO 470P 0.022 0.033 LA1837 NO
CANADA P
KRF-V5030D (X07-314X-XX)/KRF-V5030D-S (X07-3142-71)/KRF-V5030DE (X07-3142-71)
KRF-V4530D (X07-3142-71)/KRF-V6030D (X07-3132-72)/KRF-V6030DE (X07-3132-72)
DESTINATION R27,
UNIT No. A C F G B E R8 R11 R14 R15 R23 R25
ABB. 28
COUNTRY
2-91
PX Y NO YES 33 33 270 NO 3.3K 18K 7.5K
EUROPE E 2-71 or 2-72 NO
5 YES NO 10 22 100 33K 15K 27K 4.3K
0-51
U.K. T
DESTINATION C4,70,71, C8,9,35, C30,
C25 C26 C74 CF1,2 CF3 IC201
COUNTRY ABB. 79,80,82 77,89,90 31
PX Y NO YES 470P 0.022 L72-0531 (MA5) YES LA1838
EUROPE E 0.022 NO
NO 180P 0.018 LA1837 YES
YES L72-0536 (MS3) NO
T
U.K.
KRF-V5030D-S (X07-3142-71)/KRF-V6030D-S (X07-313X-XX)
DESTINATION R27,
R8,
UNIT No. A C E F G R29 R32
B R14 R15 R23 R25
ABB. 11 28
COUNTRY
GENENAL MARKET M
0-22 YES YES
MALAYSIA I NO 33 270 NO 3.3K 18K 7.5K YES
AUSTRALIA X 0-72 NO NO
DESTINATION C4,70,71, C8,35,77, C30,
C9 C25 C26 CF1,2 CF3 IC201
ABB. 74,79,80,82 89,90 31
COUNTRY
GENENAL MARKET M
YES
MALAYSIA I NO YES 470P 0.022 0.022 L72-0531 (MA5) YES LA1838
AUSTRALIA X NO
6
The DC voltage is an actual reading measured with a high impedance type volt-
meter as the AM/FM signal generator is specified to the conditions as shown in the
list below. The measurement value may vary depending on the measuring instru-
ments used or on the product. The value shown in ( ) is actual reading measured in
the AM mode.
MODULATION
MODE CARRIER
FREQUENCY DEVIATION
FM 98MHz 1kHz STEREO 67.5kHz 7.5kHz(Pilot)
7
AM 1000(999)kHz 400Hz MONO 30% MOD
C D
R3
680
MIX DISTORTION(ST)
VT 5
IFT
TR1
C4 IF-OUT 7
3P
L1
R14
68 +B 6 7.3V
VCC
OSC
R11 C17
OUT 8
100K- 100P
TR2
OSC
680K
C13
TR3
8P C14
OSC D201
27P
BUFFER
AM RF
MIX DISTORTION(ST)
VT 5
IFT
TR1
C9 7
5P
IF-OUT
R5 R11
100 0-100 VCC
6 7.3V
+B
C23 OSC 8
100P
TR2
C19
OSC TR3
8P
OSC
BUFFER
R72,
R32
73
IC201 :
15K
IC202 : LC72131
W656, W682,
CN4 S1 E1 Q201,203,204,206-209
660 683
: 2SD1819A(Q,R) or
YES NO YES NO F10-1129 2SC4081(R,S)
Q202,212,214
: 2SB1218A(Q,R) or
2SA1576A(R,S)
R29, R72, Q210,211 : 2SD1757K
32 73
YES 8.2K
D201 : DA204U or
1SS302 or
NO 3.9K
MA143A
D203 : MTZJ8.2(B) or
W656,
L6,7 CN4 W660 S1 E1
HZS8.2N(B2)
682,683
D204 : MTZJ5.1(B) or
NO NO YES NO YES F10-1129
HZS5.1N(B2)
YES NO YES NO F10-1167
D211,213 : MA111
D209 : MTZJ3.3(B) or
HZS3.3N(B2)
R72,
73
8.2K
DIGITAL LINE
SIGNAL LINE
W656,682, GND LINE
L6,7 CN4 W660 S1 E1
683
B LINE
+B
YES B B LINE
NO NO YES NO F10-1129
NO
VR-405/406/414 (1/4)
KRF-V5030D/V5030D-S/V5030DE (1/4)
KRF-V4530D (1/4)
KRF-V6030D/V6030D-S/V6030DE (1/4)
ANT INPUT
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommend-
ed parts (refer to parts list).
60dB of fire, replace only with same type and rating fuse(s). To reduce the risk of electric shock, leakage-current
or resistance measurements shall be carried out (exposed parts are acceptably insulated from the supply
60dB
circuit) before the appliance is returned to the customer.
E F
CN4
1 2
FM TUNED
+
ADJ
+
R23
C36 0.01
R42 10K C24
330P R25
R41 100K
+
2.8V
REG
AM AM
AM
ALC
OSC MIX RF.AMP
BUFF
AGC
AM IF DET
SD
COMP
AM
S-METER
FM AM/FM
S-CURVE
S-METER IF-BUFF
TUNING STEREO
DRIVE DRIVE
FM
FM IF
DET
GND VCC
L3
C81
8.8V
1
(9.2V)
+
+B
8.2V
R43
220
10.6V
3.8V FM IF AMP R15
(@FM98MHz)
+B
6.6V
C5
0.01 R11
6.3V
Q202
1.8V
R1 C88 A C1
100 3300P CF1 0.022
C84
Q201 0.022 CF2
ATT
1.2V
1.2V
+
+ R44
+B
270
FM: 7.3V
1/4W
AM: 0V
5.2V
R51
5.6K
+
+
+
2.5V
PLL
1.0V
IC202
1/2
REFERENCE PHASE DETECTOR
DIVIDER CHARGE PUMP
SWALLOW COUNTER 12bits PROGRAMABLE
1/16,1/17 4bits
UNLOCK POWER
ON
DETECTOR
RESET
2
UNIVERSAL COUNTER
C B I/F DATA SHIFT REGISTER LATCH
0.5V
0V
(12.0V) R58 12K
ST: 7.1V
MONO: 0V
X1
7.2MHz
C44
470P
indicates safety critical components. For continued protection against risk
Y05-4050-10
G H
Q203
C33
0.01
0V
C26
0V
+ +
FM DET/MPX
C37 R33
AM DET 10u16 1K
C34
+
IC201 0.01
C38
Q204
4.3V 10u16
2.8V
0V
+
DE-EMPHASIS
75uS: ON
50uS: OFF
B
DECODER
50uS
ANTI-BIRDIE
[75uS]
P-DET
STEREO
SW
MUTE
VCO FF FF FF
PILOT
304KHz 38K 19K 19K 8
2 DET
BUFFER
(S METER)
7.0V
(3.9V)
R38
1K
4.1V
+
R39
10K
+ +
F
+ +
+B +B
+
E
L4 L5 G
L4
C90
4700P
DISCRIMI-
C89
NATOR 4700P
DISCRIMINATOR DISTORTION
+B
R84
1K
W682
+B
L6
+B
W683
L7
11.7V
(0V)
MUTING
FM +B
CONT.
DIVIDER
Q214
+12V
11.8V
11.1V
R59
1.2K
C77
100P
C86
470P
S1
W656
R48 1K CH.SPACE
6
DE-EMPHASIS
R47 1K
5
R46 1K
4
R45 1K
3
KRF-V4530D/V5030D/V6030D/VR-405/406/414
I J
3.5V (3.0V)
C
R31
47K
Q207
0V
[0.6V]
BUFFER
R30
560
8.2V
Q206
3.5V
CN5
DET
15
14 S-LEVEL
13 SD
R79 1K
12 STEREO
MUTING
C70
6800P
11 R
ON: 0.7V X07-A/3
Q210 OFF: -1.8V -CN6
C83
10 GND
100P
2/4
9 L
Q211
R74 +12V 8 +12V A
47K
C71
12V 7 -12V
6800P
-11.8V
R76
Q212
1.8K
ON: 0.2V
R77 OFF: 4.8V
1K
6 T. MUTE
+12V 4 5 PLL DT
5 4 PLL CLK
3 3 PLL CE
R29 6 2 PLL DO
100
1 CH.SPACE
FM :100kHz 75uS
AM :10kHz
FM :50kHz 50uS
AM :9kHz