Kenwood HM-437WM User manual

COMPACT Hi-Fi COMPONENT SYSTEM
RXD-M47WM-H/M47WM-S
LS-M47WM-H/M47WM-S
SERVICE MANUAL
(HM-437WM) © 2005-9 PRINTED IN KOREA
B51-5961-00 (K/K) 592
In compliance with Federal Regulations, following are repro-
duction of labels on, or inside the product relating to laser
product safety.
KENWOOD Corp. certifies this equipment conforms to DHHS
Regulations No.21 CFR 1040. 10, Chapter 1, subchapter J.
DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM.
Caution : No connection of ground line if disassemble
the unit. Please connect the ground line on
rear panel, PCBs, Chassis and some others.
CD cover ass’y *
(F07-)
Phone jack
(E63-1365-08)
Power knob
(K29-8499-08)
Display/Rec. knob
(K29-8501-08)
Search knob
(K29-8503-08)
Cass lid ass’y *
(A53-)
Front cabinet *
(A60-)
Volume knob
(K29-8502-08)
CD/Tuner/Tape knob
(K29-8504-08)
EQ/Bass knob
(K29-8500-08)
.
*Refer to parts list on page 26.

Remote control unit (1)
(A70-1709-08): E type
(A70-1710-08): X type
AM loop antenna (1)
(T90-0908-08)
ANT TERMI CVR
(F07-2029-08)
Batteries (R6/AA) (2)
(–)
The marking of products using lasers
The marking this product has been classified as Class 1. It
means that there is no danger of hazardous radiation out-
side the product.
Location: Bottom
CLASS 1 LASER PRODUCT
LASER KLASSE 1
APPAREIL A LASER DE CLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
Resetting the Microcomputer
The microcomputer may malfunction (unit can-
not be operated, or shows an erroneous dis-
play) if the power cord is unplugged while the
power is ON, or due to some other external
factor. If this happens, execute the following
procedure to reset the microcomputer and re-
turn the unit to its normal operating condition.
When the power is on and TUNER input is
selected, press and hold down the button
for more than 2 seconds.
Please note that resetting the microcomputer
will clear the contents of the memory and
return the unit to the state it was in when it
left the factory.
RXD-M47WM/LS-M47WM
2
ACCESSORIES / CAUTIONS
Accessories
Cautions
System configuration
SYSTEM RECEIVER SPEAKER
HM-437WM-H RXD-M47WM-H LS-M47WM-H
HM437WM-S RXD-M47WM-S LS-M47WM-S

RXD-M47WM/LS-M47WM
3
EXTERNAL VIEW
R
L
SPEAKERS
IMPEDANCE:
4Ω
AC ~
FM ANT
AM ANT
Rubber foot
(J02-1563-08)x4
Rear cabinet
(A80-4535-08) AM Antenna
(E40-8089-08)
Speaker terminal
(E70-0196-08)
AC power cord *
(E30-)
*Refer to parts list on page 26.

RXD-M47WM/LS-M47WM
4
DISASSEMBLY FOR REPAIR / BLOCK DIAGRAM
DISASSEMBLY INSTRUCTIONS
LEFT SURFACE RIGHT SURFACE
1
2
3
4
BOTTOM SURFACE BACK SURFACE
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
CLASS 1LASER PRODUCT
LASER KLASSE 1
APPAREIL A LASER DE CLASSE 1
MAN UFACTURED:
RISK OF ELECTRIC SHOCK
DO
N
A
CAUTION
DO NOT OPEN
6
5
R
L
SPEAKERS
IMPEDANCE:
4 ¸
A
C~
FMANT
AMANT
10
9
8
7
DETACH REAR CABINET FROM FRONT CABINET MUST BE REMOVED FROM 1 TO 10 SCREWS.
BLOCK DIAGRAM
MCU
U101
U103
M24C16
EEPROM
Q803
8.1V CD SUPPLY
TO: CD-PCB
TO: U601 SC7313S
TO: U301 AN7312E
TO: U201 TA2104AFN G
CPU
TO: U260TC9257F
U802 7812
12V
LCD
KEYMAP
REMOTE
SENSE
MUTE CUT Q801 Q802
U601
SC7313S
AUDIO SIGNAL SOURCE SELECTOR
EQ MODE SEIECTOR
VOLUME CONTROL
RDS
U250 SC6579A
PLL CONTROL
FUNCTION CONTROL
U260 TC9257F G
TAPE PRE. AMP.
U301 AN7312E
ELECTRONICE
SWITCH
TRANSISTORS
LOGIC
CASS DECK
W991S-107G
RADIO SECTION
U201 SA2104S
IC601
CD DSP
TC94A14FA
IC602
CD RF
TA2157FN
CD MACHINE
TCP11TK2PX
IC604
MP3/WMA DECODE
TC94A34FG
IC603
CD MOTOR DRIVER
MM1669XH
IC607
LPF
SC1308LS
IC605
DAC
PT8211
FM ANT (PIG TAIL)
AM ANT
SOCKET
AUDIO AMP.
U801
BA5415A
D905-D908
F901 3.15A
14.5V MAIN SUPPLY
MAIN TRANSFORMER
T902
STANDBY
TRANSFORMER
D901-D904
DC 5V
CN801
32 ohm
HEADPHONE
JACK
REMOTE CONTROLLED
POWER SECTION
RY901
SDT-S-105LMR
POWER RELAY
4 ohm IMPEDANCE
AUDIO OUT
CD SECTION
PLAY OUT OF TAPE
AC PLUG
REC IN

RXD-M47WM/LS-M47WM
5
SAFETY
Important Note!!! Do the following safety checks after servicing this unit.
1. Remove all the externally connected test equipment and wires before testing the unit.
2. Use the safety test circuit as shown below.
3. Plug the power cord or unit to be tested into the test receptacle.
4. Switch the unit being tested to ON or PLAY.
5. Connect external jack/terminal contact VTVM across a 1k resistor in the test circuit. Set the meter to a
high (150V AC) scale to avoid meter damage and then touch the points with the test probe.
If the meter reading indicates less than 3 volts on all test points, set the meter to a low (3V AC) scale
and repeat the test.
6. Any reading greater than 0.2 volt indicates a potential shock hazard. If this occurs, determine the
cause of the leakage, correct the problem, and repeat the safety test.

RXD-M47WM/LS-M47WM
6
ADJUSTMENT
SERVICE ADJUSTMENT
Lubrication
The mechanical parts are factory coated with a thin coat of light grease and should not require further
lubrication. If a light grease is applied, be careful not to get any grease on the play/record head or erase
head, hubs, pulleys, tapes reels, drive belts, or switches. Use a good lubricant such as Silicon Lube G322L
or Lubricate.
Service Check
Before aligning the mechanism, wipe off any accumulated dirt with denatured alcohol. Wipe around parts
where the tape contacts and around all rotating parts. Drive belts are specially processed. Do not clean
them with alcohol.
Mechanical Torque
Use a cassette type torque gauge and check the tape mechanism.
Take-up torque 35 to 70 g-cm
Rewind torque 50 g-cm min.
Fast forward torque 50 g-cm min.
Pinch Wheel Pressure
No adjustment to the pinch roller spring is necessary. It should be sufficient to give at least 40 g-cm pull
force.
Tape Head Servicing
Each time the unit is serviced, the face of all heads should be thoroughly cleaned with denatured alcohol or
commercial head cleaning solution. The playback head should be demagnetized with a commercial
demagnetizer. Accumulation of tape oxide during normal operations can cause problems, including loss of
high frequencies and wow and flutter.
Erase Head
The erase head is properly aligned when the tape rides directly between the tape guide on the head without
crinkling the tape.

RXD-M47WM/LS-M47WM
7
ADJUSTMENT
Play/Record and Playback Head Azimuth Adjustment
To adjust the play/record and playback head azimuth screw:
1. Connect two (2) VTVMs and a dual trace scope to the stereo headphone jack (as shown) with a 32
ohm dummy load. (See Figure 1.)
VTVM VTVM
DUMMY LOAD
JK801
SCOPE
CH1
CH2
Figure 1. Azimuth Adjustment
2. Insert a 10 kHz test tape (Teac MTT-1141V or Equivalent) into the tape mechanism and play it back.
3. While playing back the test tape, slowly turn the azimuth adjusting screw until the amplitude of both
channel output waveforms is maximum and in phase. (See Figure 2.)
4. Secure the azimuth screw in place with glue or paint after making the adjustment.
Figure 2. Head Output Signal

RXD-M47WM/LS-M47WM
8
ADJUSTMENT
Tape Speed Adjustment
1. Set the function switch to TAPE.
2. Connect a frequency counter with a 32 ohm dummy load to the stereo headphone jack. (See Figure 3.)
FREQUENCY COUNTER
DUMMY LOAD
JK801
Figure 3. Tape Speed Adjustment
3. Insert and play back a 3 kHz test tape (Teac MTT-111 or Equivalent) into the tape mechanism.
4. Insert an insulated alignment tool and adjust the tape speed potentiometer (MOTOR) until the
frequency counter indicates 2940 Hz to 3090 Hz.
Bias Oscillator Frequency and Level Adjustment
1. Set the function switch to TAPE and the record and play tape mechanism to RECORD.
2. Connect a VTVM and frequency counter to test point R/P HEAD.
3. Adjust bias oscillator coil T360 until the frequency counter indicates 100 kHz ±0.5 kHz.
4. Confirm the record head voltage equal to: 4-8V.

RXD-M47WM/LS-M47WM
9
ADJUSTMENT
TUNER ALIGNMENT PROCEDURE
Equipment needed:
1. AM Signal generator
2. FM Signal generator
3. DC Voltage meter
4. Oscilloscope
5. Output meter (VTVM)
AM Alignment
Step S/G Frequency Dial Setting Indicator Adjust Remarks
1 450 kHz (1 kHz 30% mod.) 612 kHz Connect
oscilloscope or
VTVM to speaker
jack
T201 Adjust until
maximum
output
2 531 kHz (1 kHz 30% mod.) Low end Connect DC voltage
meter to test point Vt
and ground
T202 Adjust until
Vt equal to
1.5 ±0.05V
3 1602 kHz (1 kHz 30% mod.) High end Same as step 2 Confirm Vt:
6.5~8.5V
4 612 kHz (1 kHz 30% mod.) 612 kHz Same as step 1 T203 Maximum output
5 1404 kHz (1 kHz 30% mod.) 1404 kHz Same as step 1 VC201 Maximum output
6 Repeat steps 4 and 5 to minimize tracking error
7 999 kHz
(1 kHz 30%mod.)
999 kHz Same as step 1 Offset is less than
6 dB.
60 cm
AM SIGNAL GENERATOR
AM LOOP ANT AM LOOP
ANTENNA
DUMMY LOAD
TEST UNIT
VTVM
R-OUT
L-OUT
GND
Figure 4. AM IF/RF Tracking
TEST UNIT
GROUND METER
Figure 5. AM Band Frequency Coverage Alignment
Vt DC

RXD-M47WM/LS-M47WM
10
ADJUSTMENT
FM Alignment:
Figure 6. FM Band Frequency Coverage Alignment
Connect FM S/G to ANT inputs (mod 1 kHz 22.5kHz dev.)
Step S/G Frequency Dial Setting Indicator Adjust Remarks
1 87.5 MHz Low end Connect DC voltage
meter to test point Vt
and ground
L203 Adjust until Vt equal to:
2.5 ±0.05V
2 108 MHz High end Same as step 1 Confirm Vt: 7-9V
3 90.1 MHz 90.1 MHz Connect oscilloscope
or VT/VM to speaker
jack
L204 Adjust until Maximum
output
4 106.1 MHz 106.1 MHz Same as step 3 VC202 Adjust until maximum
output
5 Repeat steps 3 and 4 to minimize tracking error.
FM GENERATOR
DUMMY
ANTENNA
TP1
TEST UNIT
OSCILLOSCOPE
DUMMY LOAD
VTVM
R-OUT
L-OUT
GND
Figure 7. FM Band/Tracking
GROUND METER
Vt DC
TEST UNIT

RXD-M47WM/LS-M47WM
11
TROUBLE SHOOTING
CD Cannot read the table of
contents.
no display,
no sound.
•Disc is inserted upside down:
Insert disc correctly.
•Disc is dirty: Wipe clean with a soft cloth.
•Disc is scratched: Use a new disc.
•Disc is seriously warped:
Use a new disc.
•A non-standard disc has been inserted:
Use only a brand name disc.
•Moisture has formed inside the CD deck:
Wait about 20 to 30 minutes.
•Defect in the servo control board:
Replace or repair as required.
•Defect in the CD pickup mechanism: Replace as required.
Circuit Symptom Cause and Remedy
General No sound •Speakers are not connected:
Check the speaker connection.
•Wrong function is selected:
Set switch to the proper position.
•Defective volume control:
Set the volume control to a proper sound level.
•Defective earphone jack:
Replace the earphone jack.
•Mute function is active:
Release it by remote control.
AM No sound, weak sound
(Low sensitivity)
•Improper location of unit:
Rotate or reposition the unit.
•Defect in T203:
Check resistance, voltage, and current. Replace as needed.
•Defect AM antenna loop or oscilloscope coil:
Replace if necessary.
•Intermediate Frequency tuning faulty:
Readjust (see “Alignment and Adjustment”).
•RF tracking faulty:
Readjust (see “Alignment and Adjustment”).
•Defective U201 (SA2104S):
Check voltages. Replace if necessary.
•Poor contact in antenna circuit: Check resistance and resolder.
FM No sound, weak sound
(Low sensitivity)
•FM antenna not connected:
Connect the built-in or external antenna.
•Defective band selector switch: Replace or repair the switch.
•Defective U201 (SA2104S):
Check voltages. Replace if necessary.
•Intermediate Frequency tuning faulty:.
Readjust (see “Alignment and Adjustment”).
•Poor contact in FM antenna circuit:
Resolder or repair as required.
Tape No sound/recording,
unsteady tape sound,
weak sound
•Dirty capstan or head: Clean the capstan or head with alcohol.
•Irregular cassette tape winding:
Replace tape.
•Defective U301 (AN7312)
Check voltages. Replace if necessary.
•Cassette erasure prevention tabs broken out:
Replace tape or cover tab openings with adhesive tape.

12
ABDCE
2
1
3
5
7
4
6
CN605
ZD601
Q604
Q602
CN604
CN603
IC601
IC602
Q605
IC603
IC606
IC604
IC605
IC607
CN606
CN601
Q607
ZD603
CN602
CD
R630
R690
C600
EC
CE
CE
R601
C609
C603
C6112
C608
R686
R609
C601
R658
C677
C674
C615
J675
J668
J616
J662
J661
J654
R640
R639
R638 3
1
1
11
C676
C675
C6117
C628A
C691
C692
C693
C694
C695
C696
C697
C698
R644
R645
R646
R647
R648
R649
R650
R651
J667
R680
C670
C653
C654
J682
C699
J656 C6103
R612
C646
C652 C670A
C6119
C655
R662
C645 C643
C673
C679
R657
C680
R660
J663
C602
J678
J665
C6101
R605
R602
C611
R604
C686
R611
C6104
C688
C689 C690
C6120
C6113
C605
C678
R661
C610
R683
R684
J650
J612
J648
J642
R614
C685
R613
J619
C6108
C687
R695
J617
J618
C684
J625
J635
J640
C6118
L606
C640
J646
R607
J636
R656 C672
J637
J622
R634 R632
J653
C631
R636
C633
J643
C651
R631
C628
R653
C6121
C636
C663
J639
J602
J603
J633
J632
J609
L616
C658
C620
R626
R627
R625
C613
C613A
R622
C623
C6109
1
14
1
6
1
1
1
8
5
1
4
8
5
1
4
64
49
48
16
17
32 33
64
49
48
33 32
17
16
15
28
12
1
15 1
16 2
13
24
7
14 8
C624
C625
R629
J657
C667
L611 J601 R615
J658
J659
C621
C620A
C622
R620
R610
BE
J613
J660
R672
C6115
C6114
J676
C661 J614
J615
J655
J610
J644
C6106
C660
C659
C606
C668
C604
C618
C6107
C682
R603
C612
L602
13
31
L601
L601A
L603
J638
R687 R685 R659 R675
J606 J607
J608
J634
J624
C642
R608 C616 C644
J671
R679
C641
C635 C634 C619
R633
C632 R635
C650 R652
R682 R677 R674 R678
C629
C637 C617 R666
R676
R665
C638
C627
C6102
C639
R637
R655
X601
J628
C607
L609
J666
C6111
J649
J670
C649 C648 R663 C614 C630
C623
R619 R618 R617 R616
R621
C624
L615
C6110
J669
R654
J621
R606
J620
J630
L612
L613
J604
J652
L614
L607
J623
J626
C665
C666
C664
J627
J605
L605
J677
C656 R669 C647 R668 R670
R673 R667 C669 C657 R671
C662
R628
C626
J629
J611
J647
C681
R688
R664
R693
R697 R681 C683
C671
C6100
C6116
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD (Component side view)

FGIKMOHJLN
2
1
3
5
7
4
6
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD (Component side view)
1413
MAIN
HEADPHONE
CN806
JK801
CN202
D202 D201 D203 D204
CN801
CN201
CN701
CN260
CN402
Q401
CN401
D401
CN301
CN302
CN804
D305
D304
ZD804
Q806
Q803
U802
Q804
ZD803
ZD802
CN805
CN803 CN802
ZD801
CN602
Q404
D302 Q281
VD202
VD201
VD203
VD205
U801
U301
D803
ZD306
VD204
LR
SPEAKERS
D904 D902
D901
D903
D907
Q902
D905
CN901
D906
POWER
U601
Q801
Q802
Q805
Q807
Q313
Q310
Q308
Q303
Q316
Q312
Q307
Q311
Q309
D802
D303
U201
Q201
Q206
U260
Q403
Q280
Q251
D402
Q323
Q402
U250
Q205
Q204
Q207
Q263
Q262
Q252
Q701
Q202
Q702
D701
Q315
Q321
Q319
Q317
Q318
Q320
D301
Q306
Q301
Q305
Q302
Q304
Q314
Q203
Q208
Q261
Q260
R243
CF201
CF202
CF203
C249
C207
J209
J228
J249
R222
R279
R257
J224
J215
J227
J202
X260
X250
R255
R416
R332
C266
J242
J238
J219
L201
J222
J231
C820
J226
J230
R722
J251
L810
J234
J233
C357
J211
J232
J235
L205
L202
T203
J204
L203
R230
J207
VC202
BPF201
L204
L208
T201
VC201
R228
C238
T202
J253
C240
R224
R246
R232
R225
C269
J247
J245
J246
C257
J214
C290
C254
R401
R411
C343
C341
C327
C315
C316
C370
J221
R330
J220
C390
R329
J218
J256
TIE1
J217
C719
C725
C726
C707
C705
C801
C809
C803
C816
C810
J237
ICP
R816
R821
C830
C833
C857
C832
C745
R825
R826
C802
C345
C720
J236
J229
J254
C831
C350
C346
C349
C358
R364
C353
T360
MGND
L302
C310
J243
J244
C309
L301
2820 L809
C815
C811 J240
TIE3
J241
L801
C814
L803
L804
L802
TIE4
C819
C812
C813
C818
C804
J213
J255
C342
C328
C263
J203
C272
R273
J208
R281
J206
J225
J250
J223
J216
J205
C293
J210
C236
C828
C827 R823
R829
R824
R830
15
15
L806
L807
L808
6
1
612 1
13 24
1
15 28 14 1
8
1
110
2011
8
169
1
17
14 8
OG I
1
21
5
21
1
13
4
1
31
31
9
BE
112
C902
C901 C909
R902
R901
CE
C903
C904
C907
C908
F901
F902
RY901
C905
C906
BLACK
RED2
14
RED1
AC1
AC2
L901
T901
P2
P1
CE
CE
CE
C822
C835
C836
R804
R717
C332
R366
R341
R708
R355
C708
C715
C716
C718
C734
R714
C733
R710
R713
R711
R737
C714
R314
R827
R832
R828
R837
R819
R350
R348
R316
C330
R310
C318
C314
C308
R340
R318
C306
R308
R306
R320
C302
FB305 C338
C337
R338
R337
C882
FB306
C301
R319
R305
R307
R317
C305
C307
R309
C317
C313
R311
R302
C351
R346
C347
R343
R351
R345
R347
R344 C352
R360
C354
R365
C355
C356
R349
R812
R811
C821
C241
C200
C234
R293
C229
R229
C237
C226R233
R226
C227 R203 C222
C223
FMOSC
AMOSC
R223
R239
R218
R215
R238
R265
R268
R267
R271
C271
R284 R283
C217
R285
R286
J212
R256
C270
C267
R270
R269
C285
R263
C403
R413
R412
R417
R405
R730
R403
R402
R407
C402
R408
C286
R262
C287
R261
R280
R259
C880
R410
R409
C321
R414 R415
C253C255
C294
R242
C224
C221
C219
C206
C220
R207
R205
R220
R219
R208
C218
R217
C208
R734
R709
C717
R731
R732
C723
C721
C724
C722
C735
C736
R724
C729
BF801 FB802
C730
C740
R733
R206
R221
R234
R202
C204
C230
C232 C233
R236
R200
R210
C214
C817
C834
C856
C855
C201
C245
C881
C228
C225
R237
R209
C213
C231
C203
C239
C235
R235
J248
R266
C265
C264
C262
C261
C401
C404
R342
R328 C326 R324 C324
R326 C322
C344
R331
C323 R323
C325 R325 R327 C329
C320
R288
R277 R297
C256
R258
C252
R254
PH1
C251
C259 C258
C260
R216
C274
C268
R276 R275 R274
R272
C273
C284
C210 C212 R214 C216 R212 R248 C248
C709
C209
TP2
TP1 C246
R201
C242
R716
R715
C741
R723
C701
R801
C706
R735 C743 R738
C742 R736J257
C710
C713
R313
C711 C727 R719
R720 C728 C712 R712
R803
R366
R367
R353
C304
C333
C303
R303R301
R333
FB301
C311
R339
FB303
R321
R357
FB304
R322
C369
C368
C319
C366 R315 R368 R352
C334
R334
R354
C312
FB302
R304
C348
R805
C805 R807
C825
R813
C823R809
R810
C824
C826
R814
R815
R818 R817
R822
C806
R806
R802
R808
C211 R213 C215 R211 R247 C247
R335
C331
C360
R718
R231
R244
C202
TP4
TP5
TP3
R227
R278
R204
C205
AMVT
FMVT
EB
EB
EBEB
EB
E
EC
CE
B
EB
EB
EB
EB
EB
EB
EB
EB
EB
EB EB
EB
EB
EB
EB
EB
EB
EB
EBEB
EB
EB
EBEB
EB
EB
EB
EB
EB EB
EB
EBEB
EB
EB
EB
EB
EB
EB

15
PRTQS
2
1
3
5
7
4
6
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD (Component side view)
DISPLAY
Q180
Q181
Q182
D106
U103
D104
D105
D102
D103
U101 Q120
Q101
SW114 SW115 SW116 SW117 SW118
CN108
LED182
LCD101
LED181
LED180
SW107
SW113
SW102
SW101
SW100
SW108
SW103
SW110
SW111 SW106
SW109
SW105 SW112
U102
SW104
CN105
CN109
CN104
CN106
CN102
CN101
CN103
CN107
1
40 1
8
11
91
1
6
1
1
6
21
3
31
1
2
15
14
100
50
51
81
80
3031
BE
BE
BE
BE
R173
R186
C183
R185
J141
R183
R135
L180
R142
J180 BOOT
L179
C116
R134
R133
R132
R131
R130
R129
R128
R106
C115
L178
L177
L176
L175
L173
L172
L171
L170
R108
R116 R107
R161 R162
R163
R168
R169
R180
R167
R153
R154
R157 R156
R155
R146
R165
R115
C114
PH1
R117
R112
R109
J145
J144
J143
R147
J126
J127
R149 J156
R124
SI2
WAIT SCK2 SO2
GND
RST
J139
C106
C110
C105
C151
R145
R144
R143
R174
+5
R111
R164
R188
R182
PH2
R181
J103
J102
C118
C117
R138
R184
R137 R105 R136
J181
R139 R141 R140
C119
J105
C111
R166
C172
J146
R170
R148
J130
R123
R100
R104
C102
R101
R160
R150
J109
J185
R102
R103 R158
C150
R114
R113
R110
R119
R152
R118
R190 C104 C107 C108
R159
R151
R107A
C120
BE
EQ/BASS REPEAT PROG. PRESETDOWN PRESETUP
21
POWER
RDS/DISPLAY TIME SET
TIMER ON/OFF
REC
VOLUME UP
TAPE
IGO
VOLUME DOWN
TUNER
/BAND
CD
J101
J129
J128
J125
J120
J121
J114
C121
J118
C180
J115
J122
J123
X102
C101
C103
J138
J137
C109
J155
J104
J106
J107
J108
R171
J110
J111
X101
L101
J148
J142
J135
J134
J133
J147
J149
J131
J132
J124
J140
J112
J116
J158
C117
C119
TOP KEY

RXD-M47WM/LS-M47WM
16
WIRING DIAGRAM
PICKUP
MOTOR
SANYO
CD
MECH
DA11VF
182-010101-20(4)/E
CD
DOOR
SW
ITCH
HM437W
M
CD
PCB
HM437WM
DISPLA
Y
PCB
HM437W
M
TOP
KEY
PCB
HM437W
M
MAIN
PCB
HM437W
M
POW
ER
PCB
W
991S-237G
W
ALLEY
W
OOD
MOTOR
ERASE
HEAD
R/P
HEAD
AC
CORD
VDE
2M
W
/SOLDER
LP=21
POW
ER
TRANSFORMER
SECONDARY
(RED,BLACK)
PRIMARY
(BLUE)
RED2RED1BLACK1
CN901
GND
14.5V
5.6V
PSW
AC2
P2
TO
AC
CORD
TO
X
FORMER
P1
CN602
CN606
CN603
CN604
CN260
CN402
CN401
CN602
CN701
CN301
CN302CN804
CN805
CN803
CN802
CN801
CN202
JK801
CN806
HEADPHONE
PCB
CN101
CN102
CN106
CN104
CN103
CN107
LCD1
CN105
CN109
CN601
AC1

RXD-M47WM/LS-M47WM
17
VOLTAGE CHARTS
U101
TMP87EP26F
PIN 1 0 V PIN 26 0.8 V PIN 51 4.8 V PIN 76 2.5 V
PIN 2 2.0 V PIN 27 0 V PIN 52 PIN 77 2.5 V
PIN 3 2.3 V PIN 28 1.7 V PIN 53 2.4 V PIN 78 2.5 V
PIN 4 4.1 V PIN 29 0 V PIN 54 0 V PIN 79 2.5 V
PIN 5 2.4 V PIN 30 0 V PIN 55 2.5 V
2.3 V
PIN 80 2.5 V
PIN 6 1.9 V PIN 31 0 V PIN 56 2.5 V
2.5 V
PIN 81 2.5 V
PIN 7 0 V PIN 32 0 V PIN 57 PIN 82
PIN 8 2.9 V PIN 33 0 V PIN 58 2.5 V PIN 83 2.5 V
2.5 V
PIN 9 4.7 V PIN 34 0 V PIN 59 2.5 V PIN 84 2.5 V
PIN 10 1.7 V PIN 35 0 V PIN 60 2.5 V PIN 85 2.5 V
PIN 11 0 V PIN 36 0 V PIN 61 2.5 V PIN 86 2.5 V
PIN 12 0 V PIN 37 0 V PIN 62 2.5 V PIN 87 2.5 V
PIN 13 1.7 V PIN 38 1.0 V PIN 63 2.5 V PIN 88 2.5 V
PIN 14 3.3 V PIN 39 0 V PIN 64 2.5 V PIN 89 2.5 V
PIN 15 1.7 V PIN 40 4.8 V PIN 65 2.5 V PIN 90 2.5 V
PIN 16 1.7 V PIN 41 4.8 V PIN 66 PIN 91
PIN 17 1.7 V PIN 42 0.7 V PIN 67 2.5 V PIN 92 2.5 V
2.5 V 2.5 V
PIN 18 1.7 V PIN 43 4.4 V PIN 68 2.5 V PIN 93 2.5 V
PIN 19 0 V PIN 44 4.8 V PIN 69 2.5 V PIN 94 2.5 V
PIN 20 1.7 V PIN 45 4.6 V PIN 70 2.5 V PIN 95 2.5 V
PIN 21 0 V PIN 46 4.8 V PIN 71 2.5 V PIN 96 2.3 V
PIN 22 4.8 V PIN 47 4.8 V PIN 72 2.5 V PIN 97 0 V
PIN 23 4.8 V PIN 48 4.8 V PIN 73 2.5 V PIN 98 4.9 V
PIN 24 4.8 V PIN 49 0 V PIN 74 2.5 V
2.5 V
PIN 99 4.9 V
4.9 V
PIN 25 4.8 V PIN 50 0.9 V PIN 75 PIN 100
U260
TC9257F
IC605
PT8211
U250
SC6579A
U801
BA5415A
U103
M24C16
IC607
SC1308LS
U301
AN7312E
PIN 1 2.3 V 1.7 V 2.3 V 18 V 0 V 2.3 V 0 V
PIN 2 2.3 V 1.6 V 2.0 V 9 V 0 V 2.3 V 0 V
PIN 3 4.9 V 0 V 2.3 V 19.5 V 0 V 2.4 V 0 V
PIN 4 4.9 V 0 V 2.3 V 0.6 V 0 V 0 V 3.7 V
PIN 5 0.5 V 4.1 V 4.7 V 0.2 V 0 V 2.4 V 1.3 V
PIN 6 0 V 2.0 V 0 V 18 V 0 V 2.4 V 1.3 V
PIN 7 2.7 V 4.1 V 2.3 V 16 V 0 V 2.4 V 0 V
PIN 8 0 V 2.0 V 2.3 V 0.3 V 4.9 V 4.8 V 0 V
PIN 9 0 V 0 V 0.6 V 1.3 V
PIN 10 0 V 0 V 18.5 V 1.3 V
PIN 11 1.0 V 0 V 9 V 3.6 V
PIN 12 1.0 V 4.7 V 0 V 0 V
PIN 13 0 V 1.9 V 7.3 V
PIN 14 4.7 V 2.4 V 7.3 V
PIN 15 2.2 V 2.4 V
PIN 16 0 V 2.3 V
PIN 17 2.2 V
PIN 18 0 V
PIN 19 4.8 V
PIN 20 0 V
IC603
MM1669XH
U601
SC7313S
IC602
TA2157FN
IC1001
SC6122
U201
SA2104S
PIN 1 1.1 V 4.38 V 3.2 V 0 V 0 V
PIN 2 7.4 V 8.75 V 3.7 V 0 V 0.8 V
PIN 3 1.9 V 0 V 1.6 V 0 V 1.1 V
PIN 4 1.9 V 4.35 V 1.6 V 0 V 3.5 V
PIN 5 1.6 V 4.35 V 1.6 V 0 V 3.7 V
PIN 6 6.0 V 4.35 V 3.6 V 0 V 3.2 V
PIN 7 1.7 V 4.35 V 2.5 V 0 V 3.8 V
PIN 8 0 V 4.35 V 3.7 V 3 V 0 V
PIN 9 2.9 V 4.35 V 1.6 V 3 V 0.4 V
PIN 10 7.6 V 4.35 V 1.6 V 3 V 3.0 V
PIN 11 4.0 V 4.35 V 1.6 V 2.4 V 1.0 V
PIN 12 4.0 V 4.35 V 1.0 V 0 V 1.0 V
PIN 13 0 V 4.35 V 2.9 V 3 V 3.1 V
PIN 14 4.5 V 4.35 V 1.6 V 3 V 3.0 V
PIN 15 4.7 V 4.35 V 1.6 V 3 V 0.6 V
PIN 16 4.5 V 4.35 V 1.6 V 3 V 1.2 V
PIN 17 4.0 V 4.35 V 0.7 V 0 V 1.2 V
PIN 18 4.1 V 4.35 V 1.7 V 3 V 0 V
PIN 19 1.6 V 4.45 V 1.0 V 0 V 3.8 V
PIN 20 4.6 V 4.4 V 1.6 V 3 V 3.8 V
PIN 21 8.8 V 4.35 V 2.3 V 3 V 4.0 V
PIN 22 8.8 V 4.35 V 0.7 V 3 V 3.8 V
PIN 23 1.6 V 4.35 V 1.6 V 0 V 3.8 V
PIN 24 4.5 V 4.35 V 0 V 0 V 3.8 V
PIN 25 1.6 V 4.35 V
PIN 26 4.0 V 0 V
PIN 27 4.5 V 4.88 V
PIN 28 0 V 4.88 V

RXD-M47WM/LS-M47WM
18
VOLTAGE CHARTS
IC601
TC94A14FA
IC604
TC94A34FG
PIN 1 1.6 V PIN 33 1.6 V PIN 1 1.5 V PIN 33 0 V
PIN 2 1.6 V PIN 34 1.6 V PIN 2 3.2 V PIN 34 0 V
PIN 3 0 V PIN 35 1.6 V PIN 3 0 V PIN 35 0 V
PIN 4 0 V PIN 36 2.0 V PIN 4 0 V PIN 36 0 V
PIN 5 3.2 V PIN 37 1.6 V PIN 5 0 V PIN 37 0 V
PIN 6 3.2 V PIN 38 2.1 V PIN 6 4.4 V PIN 38 0 V
PIN 7 0 V PIN 39 3.1 V PIN 7 4.9 V PIN 39 0 V
PIN 8 0 V PIN 40 1.7 V PIN 8 3.2 V PIN 40 1.5 V
PIN 9 1.9 V PIN 41 2.0 V PIN 9 2.2 V PIN 41 0.5 V
PIN 10 3.1V PIN 42 0 V PIN 10 0 V PIN 42 1.1 V
PIN 11 1.0 V PIN 43 3.1 V PIN 11 2.3 V PIN 43 0 V
PIN 12 0 V PIN 44 0 V PIN 12 0 V PIN 44 1.1 V
PIN 13 3.1 V PIN 45 0 V PIN 13 0 V PIN 45 1.1 V
PIN 14 2.9 V PIN 46 1.4 V PIN 14 0 V PIN 46 0 V
PIN 15 3.2 V PIN 47 1.4 V PIN 15 1.7 V PIN 47 1.2 V
PIN 16 1.6 V PIN 48 2.0 V PIN 16 1.6 V PIN 48 0 V
PIN 17 0 V PIN 49 0 V PIN 17 0 V PIN 49 0 V
PIN 18 1.4 V PIN 50 1.5 V PIN 18 1.7 V PIN 50 0 V
PIN 19 3.1 V PIN 51 3.1 V PIN 19 1.6 V PIN 51 0 V
PIN 20 1.6 V PIN 52 1.5 V PIN 20 0 V PIN 52 0 V
PIN 21 1.4 V PIN 53 0 V PIN 21 1.5 V PIN 53 0 V
PIN 22 0 V PIN 54 3.2 V PIN 22 0 V PIN 54 0 V
PIN 23 1.5 V PIN 55 0 V PIN 23 0 V PIN 55 1.6 V
PIN 24 1.6 V PIN 56 3.6 V PIN 24 0 V PIN 56 0 V
PIN 25 3.1 V PIN 57 3.5 V PIN 25 0 V PIN 57 1.6 V
PIN 26 1.6 V PIN 58 3.3 V PIN 26 0 V PIN 58 0.8 V
PIN 27 1.6 V PIN 59 3.2 V PIN 27 0 V PIN 59 1.3 V
PIN 28 3.0 V PIN 60 3.2 V PIN 28 0 V PIN 60 0 V
PIN 29 1.5 V PIN 61 3.2 V PIN 29 0 V PIN 61 0 V
PIN 30 1.8 V PIN 62 3.0 V PIN 30 0.1V PIN 62 3.2 V
PIN 31 1.8 V PIN 63 3.6 V PIN 31 0.1V PIN 63 0 V
PIN 32 1.6 V PIN 64 3.2 V PIN 32 0 V PIN 64 0.8 V
TRANSISTOR
Ref. No. Transistor PIN E PIN B PIN C Ref. No. Transistor PIN E PIN B PIN C
Q101 9014 0 V 0 V 4.5 V Q312 9013 0 V 0 V 0 V
Q180 9014 0 V 0.6 V 0 V Q313 8050 0 V 0 V 0 V
Q181 9014 0 V 0.6 V 0 V Q314 8050 0 V 0 V 0 V
Q182 8550 5.6 V 4.8 V 5.5 V Q315 9014 0 V 0 V 11.1 V
Q201 9018 1.1 V 1.8 V 3.7 V Q316 8050 0 V 0 V 0 V
Q202 9014 0 V 0 V 3.4 V Q317 8550 12 V 1.7 V 0.7 V
Q203 9014 2.0 V 2.7 V 2.6 V Q318 9013 0 V 0 V 11.4 V
Q204 9014 0 V 0.6 V 0 V Q319 9013 0 V 0.6 V 0 V
Q205 9013 0 V 0 V 3.1 V Q320 8550 2.1 V 1.4 V 2.1 V
Q206 9013 0 V 0 V 3.1 V Q321 9013 0 V 0.6 V 0 V
Q207 9013 0 V 0 V 1.2 V Q323 9014 0 V 0.6 V 0 V
Q208 9014 0 V 0 V 2.0 V Q401 8550D 12 V 11.45 V 0 V
Q251 8550 4.9 V 4.1 V 4.9 V Q402 9013 0 V 0.4 V 11 V
Q252 9013 0 V 0.6 V 0 V Q403 9013 0 V 0 V 11.8 V
Q260 9014 0.6 V 1.0 V 0.7 V Q404 8550D 12 V 11.9 V 0 V
Q261 9014 0 V 0.6 V 0.7 V Q602 8050D 1.7 V 2.3 V 7.1 V
Q262 9014 0.6 V 1.0 V 2.3 V Q604 8050D 5.0 V 5.6 V 8.6 V
Q263 9014 0 V 0.6 V 2.3 V Q605 8550 3.2 V 2.6 V 3.3 V
Q280 9013 0 V 0.6 V 0 V Q607 8550D 7.9 V 7.3 V 3.2 V
Q281 8550D 12 V 11.2 V 12 V Q701 9014 1.3 V 1.9 V 3.6 V
Q301 2SC2412K 0 V 0.6 V 0 V Q702 9014 1.3 V 1.9 V 3.6 V
Q302 2SC2412K 0 V 0 V 0 V Q801 8050 0 V 0 V 0 V
Q303 2SC2412K 0 V 0.6 V 0 V Q802 8050 0 V 0 V 0 V
Q304 2SC2412K 0 V 0.6 V 0 V Q803 KTD2058Y 17 V 12 V 9.3 V
Q305 2SC2412K 0 V 0 V 0 V Q804 8550D 18 V 17.7 V 0.5 V
Q306 2SC2412K 0 V 0 V 0 V Q805 8050 0 V 0 V 17.3 V
Q307 8050 0 V 0 V 0.5 V Q806 2SC1383R 8.9 V 6.1 V 5.5 V
Q308 8050 0 V 0 V 0 V Q807 8050 0 V 0 V 4.9 V
Q309 9013 0 V 0.6 V 0 V Q902 8050D 0 V 0.6 V 0 V
Q310 9013 1 V 0.6 V 0 V Q1001 2SC945-P 0 V 0 V 2.0 V
Q311 9013 0 V 0 V 0 V

2
ACEG IBDFHJ
1
3
5
7
4
6
19 20
RXD-M47WM/LS-M47WM
CD
7
42
RFGC TEBC AVDD3-2 FMO DMO FOO TRO VREF
34
33
35
36 39
37
38 SEL
40
41
TMAX
LPFN
LPF0
VCOF
AVSS3
SLCO
PVREF
RFI
RFCT
RFZI
RFRP
AVDD3-1
FEI
SBAD
TEI
TEZI
29
30
31
32
25
26
27
28
24
19
20
21
22
23
17
18
HSO
15
PDO 16
PVDD3
UHSO 14
13
DATA
SBSY
SFSY
12 11 10
CLCK
SBOK
9 8
VDD3 VSS3-2 VDD3-2 TESIN XVSS XO
45
43
44
46 XI
47
48
BUS1
DVR
RO
DVDD3
DVSS3-1
51
50
49
52
LO
BUS0
VSS5
ZDET
DVSS3-2
56
55
54
53
57
LRCK
4
IPF
VSS3-1
VDD3-1 6
5
DOUT
AOUT 3
2
RST
CCE
BUCK
BUS3
BUS2
61
60
59
58
62
VDD5
1
BCK
64
63
8.5V
DGND
3
2
DIN
WS
BICK
GND
VDDT
MICK
SRMSTB
VDDM
CCE/PO10
BUCK/REQ/PO11
SDO3/L
SDO2/L
22
LRCKIB TXO VDD SDI1/DATA BCKIB
19
17
18
20
21
VDDT
SDO0/L
BCKO/L
MIACK/AD16
LRCO/L
BCKIA
LRCKIB
14
15
16
13
SDI0
10
11
12
9
VSS
8
BUS1/FI3/PI06 BUS0/PIO7 SDO1/L SDI2/PIO0 SDI3/PIO1 PIO2 PIO3 BUS3/FI1/PIO4 CKI/IRQ/FI0 BUS2/FI2/PIO5
25
23 VSS
24 27
26
30
28 29
31
32
1
3
2
4
35
34
33
36
PO12
40
39
38
37
41
PO8
PO9
59
VDDP
STANBY
MIDIO
RST
4
5
6
7
MICS
MILP
3
1
2
MIMD 62
VCOI 64
63
VSSP
VSSX
TEST 61
60
VSS
CKO/AD16/PO13 56
VDDX
XI
XO 58
57
VDD 55
54
PO2 51
PO0 53
52
PO1
PO4
PO3 50
49
PO6
45
44
43
42
46
PO7
AD8
AD9
AD10
48
47
PO5
8
7
6
5
LCH
NC
RCH
VDD
Lch
3
AGND
Rch
2
1
7BUS2
BUS3
SRMSTB
GND
+5V
8
9
10
11
2 RES
CCE
BUCK
BUS0
BUS1
3
4
5
6
DRST
1
3
2
1
6
5
4
3FM-
2
1
DM-
DM+ DM+
DM-
6
4
5
GND
FM-
FM+
SLT
FM+
16
14
13
12
15 F- 16
14
13
12
15
PD
T+
F+
T-
F-
T+
F+
T-
100
R621
B
10
11
7
6
9
8
L611
10
11
LD
VR
10uH
7
6
9
8
C
GND
F
V-CEN
4
5
1
2
3
4
5
D
A
1
3
2
E
COM
+
R610
C622
10
100u16
R620
82K
R619
180K
R616
180K
180K
R618
180K
R617
82K
R615
12
10
18
7
FEO
RFRPIN
RFRP
FEN
GVSW
VRO
RFDC
TEBC
TEN
SEL
LDO
TEO
11
8
9
13
14
17
16
15
RFGC
GND
RFN
RFO
AGCIN
RFGO
2
TNI
FNI
FPI
TPI
5
6
3
4
MOI
VCC
1
23
20
19
22
21
24
5
2
1
3
4
6
7
8 9
10
13
11
12
14
CH2-IN CH3-IN
24
CH4-OUT+
CH1-OUT- CH1-OUT+ CH1-IN NC
27
SUBGND 28
CH4-OUT-
CH4-IN
26 25
NC TR-B REC-OUT GND NC
VCC
NC
BIAS 23
22
VCC
NC
21 20 19
CH3-OUT+
CH2-OUT+ CH2-OUT- SUBGND NC
16
CH3-OUT-
18 17
NC NC 15
0.1
C613A
22K
R622
82P
C626
1K
R628
10K
R626
220
R627
0.1
C624
3P
C623
2.2K
R625
C614
0.047
C625
0.1 4700P
C627
28
R629
39K 29
0.1
C629
3.3K
R631
C628
0.1
R612
0
R623
33K
470uH
L606
5.6K
R632
470K
R634
0.1
C632
15K
R635
C631
47P
47K
R633
C634
C635
2700P
0.01
10K
R637
0.033
C638
28
29
30
31 C639
0.033
47u16
+
C633
C619
0.1
10K
R607
10K
R679
C641
0.1
47u16
C640
+
47u16
C643
+
C644
0.1
10u16
+
C645
4.7K
R608
62
61
60
59
58
57
22
R680
0.1
C670
R644 1K
R645 1K
R646 1K
R647 1K
R648 1K
R649 1K
R650 1K
220P 220P 220P
C628A
C697 220P C696 220P C694 220P C695 220P
60
59
58
57
C693
220P
C691
C692
61
62
30
31
38
37
38
37
0.047
C649 C648
0.047
33
470P
C651
C650
34 12K
R653
36
36
470P
R654
10
40
41
R662
470
X601
16.9344MHz
R655
1M
C655
15P 15P
C654
C653
0.1
0.1
C652
F+
F-
33
34
T-
T+
FM-
FM+
40
41
DM+
DM-
22
R603
47u16
C604
+
0.1
C606
DREQ
SDA
SCL
1
2
3
36
7
6
5.6K
R638
5.6K
R639
5.6K
R640
R697
R695
33K 33K
7
6
R681
10K
0.1
C684
0.1
C683
C685
0.1
47u16
+
C682
R614
220
C671
0.1
C681
2200P
C672
0.01R613
2.2M
0.1
C690
C689
0.1
R602
560
68
R601
0.1
C6104
47u16
C602
+
47uH
L607
47u16
C6107
+
R605
560
C6101
0.1
L603
47uH
15
R630
47uH
L614
3.3K
R606
1.5K
R604
0.1
C688
0.1
C687
R611
10K
C686
0.1
82
4
31
R675
2.2K
2.2K
R658
2.2K
R686
3.3K
R609
470P
C608
10K
R685
1u50
+
C6112
C610
0.022
R661 R684
2.2K
R683
470P
C605
3.3K
2.2K
2.2K
R687
5
67
C6113
1u50
10K
R659
47u16
C679
+
22u16
+
C675
22u16
+
C676
C678
2200P
C677
2200P
R657
100
C674
0.1
220u10
C673
+
100
R660
220u10
C680
+
C603
0.022
0.1
C611
1000u10
C612
+
R656
560
15
16
14
11
14
15
16
11
36
+8.5V+8.5V
+8.5V +8.5V
+8.5V+8.5V
+8.5V
+8.5V
+B
C613 0.1
C621
100u16
C620
+
0.1
L609
47uH
0.1
C642
0.1
C636
2.2M
R636
C618
470u16
C6106
+
0.1
4700P
C630
4.7K
R664
L601A
1MGND
R690
10
C600
100P
1K
R624
L612
1K
R651
R663
0
C699
0.1
+8.5V
L613
0.022
C601
+
C6108
47u16
0.1
C615
+B
C620A
100u16
+
C6109
100u16
+
0.1
C6114
C6102
0.1
J614
1.8K
C659
6.8K
C663
0.1
C6103
0.1
J668
220
J671
220
J675
0.047
C6111
0.047
C6110
6.8K
J666
220P
C698
J654 1K
J662 1K
J661 1K
C6120 0.1
47u16
C609
+
R688
4.7K
0.1
C6100
C6119
0.1
+5V
+B+B
+B
+B
+B
+B +B
+B
+B
+B
+B
+B +B +B +B
+B
+B +B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+
+B
+B
+B
+B
+5V
+5V
+5V
+B
+B
+B +B
+B
+B
+B
+B
+B +B
+5V
+B
CN605
CN604
CN606
CD
MECHANISM
M
M
CN602
CN601
Q605
Q607
CN603
ZD603
Q602
ZD601
(2/2)
IC607
(1/2)
IC607
3/3
DISPLAY-
CN105
MAIN-
2/3
CN602
CN805
2/3
MAIN-
3/3
CN106
DISPLAY-
ZD603 MTZJ2.2B:
ZD601 MTZJ5.6(B):
Q602,604 8050D:
Q607 8550D:
IC607 SC1380LS:
IC605 PT8211:
IC604 TC94A34FG:
IC603 MM1669XH:
IC602 TA2157FN:
IC601 TC94A14FA:
SIGNAL LINE
B LINE
GND LINE
8550Q605 :
Q604
IC601
IC605
IC604
IC603
PICKUP
IC602
HM-437WM (1/3)
CD
CAUTION: For continued safety, replace safety critical com-
ponents only with manufacturer's recommended parts (refer
to parts list). indicates safety critical components. For
continued protection against risk 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 circuit) before the appliance is returned to the cus-
tomer.
The DC voltage is an actual reading measured with a high
impedance type voltmeter with no signal input. The mea-
surement value may vary depending on the measuring
instruments used or on the product.
Y-7
R-6
R-4
U-6

KLNPRTMOQS
2
1
3
5
7
4
6
RXD-M47WM/LS-M47WM
MAIN
21 22
R270
C270
0.022
10
VSS2
VDD2
RCLK
C218 R206
C233
1000P
10P
0.047
C234
R231
47K
VC202
0.047
C242
L205
330
R201
R200
270K
10uH
0.047
C239
R210
10
L204
C232 3P
0.022
C214
3.5T
0.022
VC201 20P
R230
47K
2
1
C213
2.5T
L203
C230
18P
C231
1000P
R229
100K
C229
0.015
C227
R237
680
R228
10
47P
C225
0.047
T203
33P
R226
100K
C226
18P
C238
390P
C237
R283 1K R235
13 14 15 16 17 18 19 20 22 23 24
+3.6V+3.6V
270K
R221
0.1
R217
1K
1.5K
R208
330K
R219
470K
C208
0.01
560
R220
100
R205
10K
10K
R234
R207
R248
8.2K
8
+3.6V
T201
C203
0.47
CF201
CF202
C293
1000P
VCC AM LOW CUT FM RF IN RF GND
1
2
MIX OUT
4
3
5
RF VCC
FMRF OUT
FM OSC
AMRF IN 21
AMIF IN
6
FMIF IN
7
OSC OUT
AM OSC
STLED
0.022 C209 0.01
C210 0.01
CF203
C235
C207
4.7u50
+
+
C236
220u10
330
R246
C211
C212
1
1
12K
R212
12K
R211
12
QUAD AGC GND
10
9
R OUT
11
DET OUT
IF REQ
ST/MO
MPX IN
L OUT
22K
R242
C240
FM/AM
C268 0.022
C272
100u16
1000P
C248
C247
1000P
R247
8.2K
R232 330
10K
10K
R272
C273
+
R271
C271 0.022
0.1
4.7K
R285
1K
R273
10K
R281
R286
100K
R269
1.5K
2.2u50
+
C269
C263 100u16
C262 0.022
R216 1K
R266 1K
R265
R222
3.3K
10K
R213
5.6K
C215
1500P
+3.6V
C216
1500P
R214
5.6K
C266
+
3.3u50
+
1u50
R215
0.022
C217
47K
10K
7
18
560
R267
0.022
R268
1.5K
C267 20
19
1000P
C265
C274 100P
17
16
15
14
3
PERIOD
FMVT
AMVT
B1
XT
XT
1
2
CLOCK
IF REQ
TUNER
IF IN
B0
GND
FM IN
5
DATA
4
6
C264
1K 0.01
+
11
13
12
AM IN
VDD
EE
CD
AUX
ST/MD
8
9
R279 10K
R238 10K
C294
R239
10K
R233 100
T202
10
R204
C224
C204 0.01
0.022
R203
R202
150K
1K
C206
0.022
R225
1K
C221 0.1
C223 330P
C222
1
R224
10K
3.3K
R223
0.1
C220
1
C219
3
R257
1K
1000P
R218
47K
+3.6V
22
C253 VREF
C255
C290 100u16
C252 0.1
R284
270P
+
560P
8CMP
VSS3
VSS1
VDD1
MUX
6
7
+
5
4
C254
2.2u50
2
R DATA
QUAL
2
3
1
MODE SW
TAPE PHOTO
T.MOTOR
HALF SW
2
4
3
1
MGND
BIAS CONT
GND
GND
PSW
L.V. DET
PLAY/REC
5V
5.6V
MUTE
DGND
8.5V
CD R
CD GND
CD L
4
R830
10K
1
3
2
9
8
7
6
5
+5.6V
1
3
2
+8.5V
3
2
1
+B
C813C814 C815C816
C832
10K
1K
C261
33P 30P
C260
+8.5V
R263 1K
R262 1K
R261 1K
R280
7.2MHz
X260
C285 100P C287 100P C286 100P
R277 10K
R297 10K
100K
R256
R288 10K
6
5 4
+5.6V
R275 10K R276 10K R274 10K
C830
+8.5V
+5.6V
C833
10u16
PDA
PCLK
PERI
ST
RDA
RCLK
+8.5V
+5.6V
5
6
4
3
5
6
4
3
1
22
1
L810
47uH
+5.6V
2
4
3
1
5.6V
P SW
14.5V
GND
2
4
3
1
C904 0.022
T3.15A
F902
680
GND
100
100u16
+
R821
R822
+
22
1W
C831
220u16
R820
+
OUT
L809
+14.5V
1/4W
100uH
IN
100u16
R818
3.3K
10K
R819
R815
+
22
+14.5V
100K
R817
270
R816
470u16
C902
0.022
+
C801
C257
+
100u10
C256
0.047
9
T2
T1 10
11
12
10
R255
22
R258
4.332MHz
56P
C258 C259
R259
NC
X1
X0
13
14
15
16
10K
1
X250
R803
56P
R804
47K
4.7K
C819
0.47u50
330u25
47u16
47u16
0.47u50
R813 C809
R805 4.7KR806 4.7K
R814
R802
12K
10K
10K
4.7u50
+
C806 330P
C810
ICP
+
C804
+
C805 330P
+
C818
+
R801
12K
+14.5V
C803
+
R807
C823
100P
R808
C826
330P33K 100P
C824R810
1.5K
8
9
330P
C825
1.5K
7
4
12
10
44K
44K 2
11
4700u25
0.133K
R809 C817
+
5
C820
0.022
6 1
3
1000P
0.022
C906
C908
C905
0.022
1000P
C907
T902
RY901
R901
100
1000P
C903
T901
1K
C822
1500P
R812
1K
1500P
C821
R811
: AC240V~ 50Hz
: AC230V~ 50Hz(E)
(X)
L901
L808
0.1 100u16
+
+
C811
3300u16
C812
3300u16
+
100u16
+
3
4
55
4
3
1
2
1
2
0.1
C827
0.022
R824
330
C828
0.022
R823
330
L806
L807
T3.15A
F901
FB801
FB802
10u16
C802
+
47K
R832
1K
R826
1K
R827
47u16
C857
+
10K
R828
R825
220
5.6K
R837
3
2
1
7 6 5 4 3 2 1
IN L
NF L
PCP L
OUT L
ALC.INL
ALC
GND
8 9
10
11
12
13
14
IN R NF R PCP R OUT R ALC.INR RF VCC
28 27 26 25 24 23 22 21 20 19 18 17 16 15
SCLK
SDA
DGND
OUT LF
OUT RF
OUT LR
OUT RR
BOUT(R)
BIN(R)
BOUT(L)
BIN(L)
OUT(L)
IN(L)
L1
1
2
3
4
5
6
7
8 9
10
11
12
13
14
CREF VDD GND L R IN(R) OUT(R) LOUD R R3 R2 R1 LOUD L L3 L2
2
1
2
1
C357
0.012
R302
R337 C337
3.3K
33
4
5
4
5
1
2
1
2
R304
3.3K
3.3K
R303
R301
3.3K
T360
C352
1000P
C355
C353 100u16
R365
C356
27K
4.7
R360
1000P
C354
+
0.01
4.7K
R343
82
R364
R318
1200P
120K
R338
120K 150P
C338
150P
82P
C304
47MH
L302
C302
1000P 1000P
C301
C306
22K
2.2K
R305
R306
2.2K
22K
R317
C305
1200P
47MH
C303
82P
L301
0.022
100K
R344
22u16
C358
+
47K
R346
47K
R345
0.022
C347
10K
R347
0.1
C348
100K
R349
4.7K
R351
100u16
C350
+
10K
R350
+
C349
100u16
C351
1000P
330P
C314
220u10
C316
+
FB304
FB302
C312
100P
10u16
+
C342
R328
4.7K
R326
0.033
C322
4.7u50
C328
+
100P
C320
18K
0.039
C326
4.7K
R324
47K
R308
1K
R320
1K
R319
33
R322
47K
R307
FB303
C311
100P
FB301
C313
330P
220u10
C315
+
4.7u50
C327
+
4.7K
R323
0.039
C325
33
R321
C319
100P
C321
0.033 4.7K
R325
R327
18K
12K
R329
R309
47K
0.022
C344
330u16
+
C343
10K
R331
47u16
C341
+
R342
680K
12K
R330
10K
R314
120K
R336
1000P
C332
47K
R341
1000P
C331
3.3u50
+
C345
120K
R335
10K
R313
R311
82K
10u16
+
C309
120K
R333
47K
R310
560
R352
10K
R366
10K
R368
0.1
C360
R355
22K
1K
R353
1K
R354
2200u10
C370
+
330u16
C346
+
330
R332
R316 680
10K
R315
12CDAT
12CCLK
1
D GND
3
2
SDA
SCL
SDA
SCL
C722 0.33 C724 0.33
5.6K
R716
C723 0.33 C721 0.33
R715
5.6K
C740
390K R734
4.7K
4.7u50
C719
+
820
R731
1K
R733
R732
47P
2.2K
R709
1U50
C726
+
1u50
C725
+
22u16
C705
+
C706
0.022
C708
0.022
220u10
+
C707
C715 3300P C716 3300P
4.7u50
C720
+
2.2K
R713
2.2K
R711
C733 0.1
2.2K
R710
2.2K
R712
2.2K
R714
0.1
R735
820
R737
1K
C742 47P
390K
R736
560
R357
R334
120K
82K
R340
4.7K
R738
R708 470
220u16
C745
+
C734
REC SW
SOLENOID
6
5
8
7
6
5
4
3
2
1
TAPE TOUCH-SW
H-VCC
H-OUT
GND
SOLENOID
MODE SW
REC SW
MOTOR+
R410
100K
1K
R409
4.7
R411
4.7
1/4W
R414
1K
R415
100K
R416
1/4W
100K
R413
0.022
C403
R412
10K
0.022
C402
R408
100K
8
7
6
3
2
R407
10K
R417 10K R405 10K R403 10K
R402 120K
1K
R401
7
6
8
3
2
REC SW
MODE SW
MOTOR+
TOUCH-SW
SOLENOID
H-VCC
H-OUT
GND
TAPE
+8.5V
+5.6V +5V
+5V
+12V
0
L801
0
L802
8uH
L804
8uH
L803
1/4W
1000P
C836
C241
15P
FB305
R339
560
R348
4.7K
1K
R723
R724
1K
220P
C729
220P
C730
33K
R717
3.3K
R719
3900P
C727
R720
3.3K
C728
3900P
33K
R718
0.022
C401
C404
0.022
10u16
C310
+
120
R722
1K
J246
1K
J245
R254
C251
2.2K
10
J203
0
C201
0
C205
C200
1000P
330
R829
R830
330
J241
8uH
J240
8uH
FB306
100P
C882
100P
C390
C366
1000P
R367
0
C701
0.1
1
C307
1
C308
1
C329
1
C330
1
C741
1
C709
1
C717
1
C718
1
C743
1
C714
0.47
C712
1
C710
1
C713
0.47
C717
R209
10
0
R278
C901
+B
+12V
+12V
+B
+B
+B
+B
+5V
+B
+B
+12V
+B
+12V
+12V
+12V +5V +12V
+5V
+12V
+5V +5V +12V
+5V
+5V
+5V
+5V
+5V +5V
+12V
Q263
Q262
VD202
FM ANT
CN201
D201
D202
VD203
CN202
AM ANT
D203
D204
VD201
Q252
Q205
Q203
Q208
Q202
Q206
Q260
Q261
Q280
Q281
Q204 Q207
Q201
ZD802
ZD801
VD202,203
VD201
D803
D201-204,301-305,401,402,
Q803
Q307,308,313,314,316,801,
Q281,401,404,804
Q251,317,320
Q205-207,252,280,309-312,318,
CN402
CN104
DISPLAY-
3/3
CN804
CN805
CN602
CN101
CD-
CN604
1/3
3/3
DISPLAY-
CD-
CN605
1/3
RECORDING LINE
: SVC348S
GND LINE
SIGNAL LINE
MTZJ6.2(B)
SVC201SPA
MTZJ9.1(B)
:
:
:
B LINE
1N4001
1N4148
KTD2058Y
8050
2SC2412K
8550
9013G
:
:
:
:
:
:
:
315,323,701,702
Q202-204,208,260-263,
U802
U260
U250
Q902
D803
Q251
ZD802
CN260
D802
CN803
DISPLAY-
CN103
3/3
U601
Q201
U801
U301
U201
CN901
Q806
Q805
ZD801
Q803
Q804
Q802
Q801
9014
9018
NJM7812A
BA5415A
SC7313S
AN7312E
TC9257F
SC6579A
SA2104S
:
:
:
:
:
:
:
:
:
D906
D905
:D901-904
D907
D905,906
:
:
Q902 :
1N4001
1N4148
RL202
8050D
SPEAKERS
D907
D902
D901
D904
D903
R
CN802
L
PHONES
CN801
R
CN806
L
JK801
ZD804
ZD803
Q807
D402
BPF201
BIAS GND
HEAD/R/P
HEAD/R/P
ERASE HEAD
Rch
Lch
CN302A CN302 Q302
CON301 CN301
Q304
Q303
Q301
Q316 Q318
D303
Q317
Q306
Q305
Q319
Q320
Q321
D301
Q310
Q308
Q307
Q309 Q323
Q311
Q313
Q314
Q312
D304 D305
D302
ZD306
Q315
CN701
3/3
DISPLAY
CN102
Q701
Q702
D701
CN401 Q401Q404
Q403 Q402
D401
M
319,321,402,403
8550G:
802,805,807
Q806 2SC1383R:
Q301-306
701,802
ZD803
ZD804 MTZJ8.2(B)
MTZJ5.6(B)
:
:
MTZJ7.5(B):ZD306
U201
MAIN
U260
U250
HM-437WM (2/3)
U802
POWER
U801
HEADPHONE
U301 U601
CASS DECK
CAUTION: For continued safety, replace safety
critical components only with manufacturer's rec-
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)
before the appliance is returned to the customer.
The DC voltage is an
actual reading measured
with a high impedance
type voltmeter with no
signal input. The mea-
surement value may
vary depending on the
measuring instruments
used or on the product.
U-4
H-6
V-7
W-7
H-5
X-7

2
UWYAAACVXZABAD
1
3
5
7
4
6
23 24
RXD-M47WM/LS-M47WM
DISPLY
∗U101
LCD101
U102
DISPLAY
TOP KEY
HM-437WM(3/3)
U103
CN103
D103
Q101
CN105CN102CN101
D102
CN104
D104
D105
LED181
Q180
∗LED180
Q182
Q181
∗LED182
SW107 SW108
POWER TIMER
ON/OFFSET
TIME
SW109
PLAY/
PAUSE
SW110SW111
SKIP+/
SEARCH+
SW112SW113
VOL+ STOP
SW101
/BAND
TUNERCD
SW100 SW102
SEARCH-
RDS/ REC
DISPLAY
SW103SW104
SKIP-/
SW105
VOL-
SW106
TAPE
SW116
PROG.
SW117
DOWN
PRESET
SW118SW115
REPEAT
SW114
BASS
EQ/
UP
PRESET
2/3
CN260
MAIN-
2/3
MAIN-
CN804
2/3
MAIN-
CN701
1/3
CN606
CD-
U101 :
U102 : RPM7138-V4
Q101,180,181
: 9014
Q182 : 8550D
D102-106 : 1N4148
B LINE
GND LINE
CN106
CD-
CN603
1/3
D106
CN107
CN108
CN109
M24C16U103 :
2/3
CN402
MAIN-
to
CD DOOR SW
1
2
3
4
5
6
7
8 9
10
11
12
13
14
15
16
17
18 19
20
21
22
23
24
25
26
27
28 29
30
31
32
33
34
35
36
37
38 39
40
COM1 COM2 COM3
1
2
3
4
5
6
PDA
PCLK
PERI
ST
RDA
RCLK
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
1
2
3
4
5
6
7
8 9
10
11
12
13
14
15
16
17
18 19
20
21
22
23
24
25
26
27
28 29
30
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
SEG20
SEG19 SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11 SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28 SEG29
SEG30
SEG31
SEG32
SEG33
SEG34
SEG35
SEG36
SEG37
SEG38 SEG39
VDD2
VSS2
BOOT
VAREF
AD K1
AD K2
L.V. DET
PWR DETECT
STAREO
RDS DATA
OVERLOAD
CLT(SLEND)
SLT
MOTOR OP
MOTOR CL
BUS3
BUS2
BUS1
BUCO
BUCK
CCE
VSS1 XOUT XIN RESET XTOUT XTIN TEST BIAS CONTROL REMOTE MUTE MP3 SCLK MP3 SDATA MP3 REQ BACKLIGHT PROTECT PLAY/REC RECSW R/WAIT RECSW F SOLENOID MODE SW VOL STB POWER HALF SW I2C DATA I2C CLK RDS CLK T.MOTOR TAPE PHOTO CD RW CDRES
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
COM3
COM2
COM1
COM0
VLC
PLL DATA
PLL CLK
PLL PER100
VDD1
COM0
COM1
COM2
COM3
0.1
C119
33
32
31
39
36
35
34
42
43
R139 10K
R140 22
R136 1K
R145 1K
R144 1K
R143 1K
470u6.3
C101
+
C102 0.1
43
42
26
kHz
32.768
X102
C108 20P C107 20P
X101
7.2MHz
2.2K
R104
24P
C106
24P
C105
47K
R101
10u16
+
C103
3.3K
R102
10K
0.1
C104
R103
29
30
20
19 18
27
28
8
16
21
22
25
24
10
DRST
RST
CCE
BUCK
BUS0
BUS1
BUS2
BUS3
SRMSTB
GND
9
8
7
6
5
4
3
2
1
VOL DAT
VOL CLK
1
32
1
MUTE
7
PSW
GND
BIAS CONT
89
PLAY/REC
5.6V
L.V. DET
46
5
3
5V
2
16
45
22
8
R138 2.2K
47uH
L101
R109 1K 24 R110 1K 25
6
HALF SW
MODE SW
REC SW
3
12
SOLENOID
45
TAPE PHOTO
T. MOTOR
54
26
OUT
GND
IN
47u10
C180
+
100
R180
3.3K
R183
10K
R181
∗R184
100K
R186
10K
R182
1K
R188
∗R185
C118 0.01C117 0.01
R134 10K
0.01
C116
R133 10K
R132 10K
R131 10K
R130 10K
R129 10K
R128 10K
29
30
31
32
33
34
35
36 39
+B
0.01
C172
220u16
C109
+
COM0
R174 2.2K
13
12
11
R106 10K
40
R141 10K
DREQ
SDA
3
2
SCL 111
12
13
C183
0.022
1
2
2
1
470
R161
680
R162
1K
R163
1.2K
R164
1K
R165
1.5K
R166
1.8K
R167
2.2K
R168
2.7K
R169
2.2K
R156
1.8K
R155
1.5K
R154
1K
R153
1.2K
R157
1K
R152
680
R151
470
R150
R142 10K
R171
1K
R100
R113 10K R112 10K R111 10K
R170 1K
DGND
GND
10
10
R117 1K
R146 4.7K
R118
100P
C150
10
R158
23
+5V
11 12
CLT 40
GND
L170 1K
75
R160
75
R173
47
46
46
47
R137 39K
14
9
9
14
0.01
C115
L171 1K L172 1K L173 1K L179 1K L175 1K L176 1K L177 1K L178 1K
L180 1K
10K
R135
4
2
3
1
5 8 6 7
R107
220
0.022
C120
47u10
C121
+
4.7K
R114
0.01
C114 54
21
4.7K
R116
28
20
23
27
19 18
R149
10K
45
S25
S2
S1
S13
S5
S4
S3
S7
S6
S10
S9 S8
S12
S11
S16
S15
S14
S18
S17
S22
S21
S20
S24
S23 S19
S27
S26
S30
S29 S28 S33
S32
S31
S35
S34
S0
S24
S1
COM0
COM1
COM2
COM3
S0
S12
S4
S2
S3
S5
S6
S8
S7
S9
S10
S11
S13
S14
S16
S15
S17
S21
S18
S20
S22
S23
S25
S26 S28
S27
S29
S32
S30
S31
S33
S34
S19
S35
100
100
150
EEUROPEHM-437WN-S
EUROPE
AUSTRALIA
HM-437WN-H
HM-437WN-H
E
X
COUNTRY
DESTINATIONMODEL
NAME ABB. 185
R184,
ORG
BLUE
BLUE
182
LED180,
100K
0
C151
1K
10K
R159
1K
R119
4.7K
R108
R147 1K R124 1K
J146 1K
R148 1K
J130 1K
R123 1K
+5.6V
+B +B+B
+5.6V
+5V
+5V +5.6V +5V +5.6V
+5V +5.6V +5V
+5V
+5.6V
+5V
+5.6V
1
COM0
2
COM1
3
COM2
4
COM3
5
1F
1H
1G
1E
6
1A
1I
1N
1M
7
1B
1J
1K
1L
9
2F
2H
2G
2E
10
2A
2I
2N
2M
13
3F
3H
3G
3E
14
3A
3I
3N
3M
15
3B
3J
3K
3L
17
4F
4H
4G
4E
18
4A
4I
4N
4M
19
4B
4J
4K
4L
11
2B
2J
2K
2L
8
1C
1D
12
2C
2D
16
3C
3D
20
4C
4D
COM/PIN #
COM-0
COM-1
COM-2
COM-3
2924
COL
5C
5D
30
7F
7H
7G
7E
31
7A
7I
7N
7M
32
7B
7J
7K
7L
21
5F
5H
5G
5E
22
5A
5I
5N
5M
23
5B
5J
5K
5L
25
6F
6H
6G
6E
26
6A
6I
6N
6M
27
6B
6J
6K
6L
34
8F
8H
8G
8E
35
8A
8I
8N
8M
36
8B
8J
8K
8L
28
6C
6D
33
7C
7D
37 38 39
8C
8D
40
P( )
1 8
A
FHI JB
ENMLC
G
D
K
COL
P
TMP87EP26-437W
CAUTION: For continued safety, replace safety critical com-
ponents only with manufacturer's recommended parts (refer
to parts list). indicates safety critical components. For
continued protection against risk 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 circuit) before the appliance is returned to the cus-
tomer.
The DC voltage is an actual reading measured with a high
impedance type voltmeter with no signal input. The mea-
surement value may vary depending on the measuring
instruments used or on the product.
R-4
H-6
R-5 R-6
R-7
H-3