Kenwood HM-437WM Service Manual page 19

K L
RXD-M47WM/LS-M47WM
MAIN
C237
33P
R229
1 100K
C238
390P
VD201 C206
0.022
T203
CN202
C227
AM ANT
0.047
R237 T202
1
680 C225
2
47P
R209 R278
L203
10 0
R230 C231
2.5T
47K 1000P R228
10
R231 C233 L204 R210
3.5T U201
47K 1000P 10
2
C239
BPF201
0.047
C201
0
CN201
FM ANT
T201
C242
0.047
R201
3 330
+3.6V
4
C307
Q307
1
R301
L301 R317
3.3K
47MH
22K
5 Q301
C303 C305
R303
82P 1200P
3.3K R319
1K
HEAD/R/P
CON301 CN301
Q303
1 1
Lch Q305 R305
2 2
2.2K
FB305
3 3
BIAS GND
R306
4 4
2.2K
5 5
Q306
Rch
R304
R320
3.3K
HEAD/R/P
L302 R318 1K
Q304 47MH 22K
R302
C304 C306 C308
3.3K
82P 1200P
CN302A CN302
Q302
1 1
2 2
ERASE HEAD
6
CASS DECK
TAPE
T360
TOUCH-SW
H-VCC
H-OUT
GND
C882
SOLENOID
100P
Q316
MODE SW
C390
100P
REC SW
M
MOTOR+
7
21 MAIN
M N
R257 C253
1K 270P
Q201
C222
1
R239
10K
Q252
R235 R283
10K 10K
Q205
R222
Q204
3.3K
Q206
R215
C263 100u16
47K
+
C217 C262 0.022
0.022
R265 C264
1K 0.01
C211 R211 C274 100P
1 12K
R214
C212 R212 5.6K
R266 1K C265
1 12K
C216
1000P
R216 1K
1500P
C266 R268
R213
3.3u50 1.5K R267
5.6K
+
560
C267
C215
0.022
1500P
+3.6V
Q260
R207
Q261
C247
10K
1000P
Q203
Q281
Q202
C248 +B
R220
1000P
R234 R271
100
10K 10K R273 R286
100K
1K
Q208
R272
+B
10K
R281
10K
Q280
C309
Q311
10u16
+
R309
47K C329 R329
1 12K
R323 C325
4.7K 0.039
Q309
Q323
C313
R331
330P
10K
U301
C343
330u16
C314
+
330P
C344
0.022
Q310
R324 C326
C330 R330
Q308 4.7K 0.039
1 1 12K Q312
R310
R352 R368
47K
560 10K
Q315
R315
R316 680
10K
D301 +12V
D303
R364
+12V
82
Q317
R349
R344
Q320
100K
100K
Q321
Q318
Q319
O P
U250
J245
16 1K
1
RCLK
QUAL
15
2 R259
NC
R DATA
14 10K R801
C254
X0 12K
X250
2.2u50 3
13
VREF
X1 R803 R813
+
4 12
4.332MHz 4.7K 10K
MUX VDD2 +B
C257
5
+B VDD1
11 100u10
Q801
6
VSS2
VSS1
10 +
7
T1
VSS3
Q802
C256
0.047 R814
8 9
CMP T2 10K
R802
12K
+B
R284
1K
Q251
R256
Q207 100K
R238 10K
R279 10K
J203
10
+5V +5V
U260
11 10
EE ST/MD
12 9
VDD AUX
13 8
AM IN CD
7
14
TUNER
FM IN
6
15
IF REQ
GND
R263 1K
5
16 DATA
IF IN
R262 1K
4
17 CLOCK
B0
18 3 R261 1K
B1 PERIOD
19 2
AMVT XT D402
X260
20 1
FMVT XT
D803
7.2MHz
R280
10K
L810
D802 47uH
+12V
C269 R270
2.2u50 1K
+
C270
0.022
Q262
Q263
R333
120K
C741 R731
1 820
Q313
R313
10K
R341
47K
C345
U601
3.3u50
+
Q314
R314
10K
C742 47P
R736
C707
220u10
390K
+
Q702
C708
R334
120K 0.022
C720
R367
D304 D305 4.7u50
0
+
R708 470
+12V
CN401
R416
TAPE TOUCH-SW 8 8
H-VCC 7 7 4.7
1/4W
H-OUT 6 6
GND 5
SOLENOID 4
3 3
MODE SW
REC SW 2 2
MOTOR+ 1
22
Q R
U801
C803
0.47u50 FB801
5
+
3 L
C809 R807
47u16 1.5K 4
J240
+ C811 CN801
C818 44K 3300u16 8uH
2
1
330u25 7
+
+ 2
C812
44K 11 3300u16
C810 R808
47u16 1.5K 9 +
3
+
R
4
C804
J241
0.47u50 FB802
8 10
5
8uH
+
Q803
ICP
CN802
R815
Q804
22
L
R
R819
Q805
10K
POWER
U802
D901 D903
+12V OUT IN
GND D902 D904
L809
R820
Q806
100 100uH
R901
1W
R822 100
22
Q902
GND
C905
1 1
F901
0.022
14.5V
2 2
R825 5.6V
D905
T3.15A
+5.6V 3 3
220 P SW
4 4
D906
Q807 R832 R827
CN803 CN901 F902
47K 1K
T3.15A
C906
0.022
+8.5V
+5.6V
+5V
CN260
1 1 RCLK
2 2 RDA DISPLAY-
CN103
3 3 ST
+5V
+12V 4 4 PERI
3/3
5 5 PCLK
6 6 PDA
CN805
CD-
+8.5V 1 8.5V
CN605
2 DGND
1/3
3 MGND
Q701
CN804
R732
390K R734 1 MUTE
+5.6V 2 5.6V
4.7K
C740
+5V 3 5V
DISPLAY-
47P
4 PLAY/REC CN101
5 L.V. DET
6
PSW
7 GND
8 GND
9
BIAS CONT
R723
CN701
1K
SCL 1 12CCLK
R724
DISPLAY
1K
CN102
SDA 2 12CDAT
3/3
3 D GND
R717 CN602
33K
1
CD L
CD-
CN604
2 CD GND
1/3
R718
33K
3 CD R
+12V
+12V
Q404 Q401
R411
CN402
7
4.7
1/4W 6 1 TAPE PHOTO
2 T.MOTOR
8 3 HALF SW
3 4 MODE SW
Q403 Q402
5 SOLENOID
C401 6
2 REC SW
0.022
HM-437WM (2/3)
S T
HEADPHONE
R829
330
CN806
L807 R823 JK801
1
330
2
L806
3
4
5
R824
L808
330
PHONES
R830
330
SPEAKERS
T901
L901
(X) : AC240V~ 50Hz
RY901
(E) : AC230V~ 50Hz
T902
The DC voltage is an
Q902 : 8050D
actual reading measured
D901-904 : 1N4001
D905,906 : RL202 with a high impedance
D907 : 1N4148
type voltmeter with no
signal input. The mea-
surement value may
vary depending on the
measuring instruments
U201 : SA2104S
used or on the product.
U250 : SC6579A
U260 : TC9257F
U-4
U301 : AN7312E
U601 : SC7313S
U801 : BA5415A
U802 : NJM7812A
Q201 : 9018
Q202-204,208,260-263,
315,323,701,702 : 9014
H-6 Q205-207,252,280,309-312,318,
319,321,402,403 : 9013G
Q251,317,320 : 8550
Q281,401,404,804 : 8550G
Q301-306 : 2SC2412K
Q307,308,313,314,316,801,
802,805,807 : 8050
Q803 : KTD2058Y
Q806 : 2SC1383R
V-7
3/3 D201-204,301-305,401,402,
701,802 : 1N4148
D803 : 1N4001
VD201 : SVC348S
VD202,203 : SVC201SPA
ZD306 : MTZJ7.5(B)
ZD801 : MTZJ9.1(B)
ZD802 : MTZJ6.2(B)
ZD803 : MTZJ5.6(B)
ZD804 : MTZJ8.2(B)
W-7
RECORDING LINE
SIGNAL LINE
GND LINE
B LINE
+B
CAUTION: For continued safety, replace safety
critical components only with manufacturer's rec-
H-5
ommended parts (refer to parts list). indicates
safety critical components. For continued protec-
tion against risk of fire, replace only with same
type and rating fuse(s). To reduce the risk of elec-
tric shock, leakage-current or resistance measure-
ments shall be carried out (exposed parts are
acceptably insulated from the supply circuit)
DISPLAY- before the appliance is returned to the customer.
CN104
X-7
3/3