Kenwood RXD-M505USB-B User manual

This product uses Lead Free solder.
This product complies with the RoHS directive for the European market.
COMPACT Hi-Fi COMPONENT SYSTEM
RXD-M505USB-B/M505USB-S
LS-M505-B/M505-S
SERVICE MANUAL © 2007-10 PRINTED IN JAPAN
B53-4023-00 (N/J)122
USB jack
(E58-0096-08)
CD door
(A29-1280-08) : S
(A29-1284-08) : B
Cassette door
(A53-2490-08) : S
(A53-2492-08) : B
Phones jack
(E11-1012-08)
Front cabinet
(A60-2529-08) : S
(A60-2532-08) : B
Volume knob
(K29-8628-08) : S
(K29-8643-08) : B
DANGER:
Please do not look at the laser beam directly during
repair or operation check.
(M-505USB)
S : Silver
B : Black

2
RXD-M505USB/LS-M505
ACCESSORIES / CAUTIONS
Accessories
FM ANT Wire (1)
(T90-0925-08)
AM loop antenna (1)
(T90-0926-08)
Remote control unit (1)
RC-F0320E
(A70-1727-08)
Batteries (R6/AA) (2)
(–)
Cautions
Resetting the Microcomputer
The microcomputer may malfunction (unit cannot be
operated, or shows an erroneous display) 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
return the unit to its normal operating condition.
When the power is on and TUNER input is
selected, press and hold down the (■stop)
button on the unit for more than 2 seconds.
Unplug the AC cord and plug it back in if “INIT.
OK” is appears.
• 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.
SYSTEM vs COLOR
SYSTEM RECEIVER SPEAKER COLOR
M-505USB-B RXD-M505USB-B LS-M505-B BLACK
M-505USB-S RXD-M505USB-S LS-M505-S SILVER
The marking of products using lasers
CLASS 1 LASER PRODUCT
LASER KLASSE 1
APPAREIL A LASER DE CLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
The marking this product has been classified as Class 1.
It means that there is no danger of hazardous radiation
outside the product.
Location: Bottom

* Refer to parts list on page 20.
3
RXD-M505USB/LS-M505
EXTERNAL VIEW
AUX IN FM ANT.
757AM ANT.
RL
L
SPEAKER
IMPEDANCE
47
R
L
R
RCA jack
(E63-1426-08)
Speaker terminal
(E70-1034-08)
Rubber foot
(J02-1590-08)
AC Cord*
(E30-)
Rear cabinet
(A80-4576-08) : S
(A80-4577-08) : B
Tuner module
(W02-4673-08)

4
RXD-M505USB/LS-M505
ADJUSTMENT
No ITEM INPUT
SETTING
OUTPUT
SETTING
RECEIVER
SETTING ALIGNMENT POINT ALIGNMENT SETTING FIG.
Cassette deck
1Demagnetization
and cleaning --
Power: OFF
Demagnetization
and cleaning
Heads, capstan and
pinch roller
Demagnetize heads with the head
eraser (Demagnetizer). Clean
heads capstan and pinch roller
using a cotton swab slightly
damped with alcohol
2 Azimuth of Heads MTT-114:
10kHz,-10dB
Connect the
oscilloscope and VOM
to PHONE jack.
PLAYBACK Screw fixing heads
Adjust the output to maximum and
turn the azimuth adjusting screw
for Lissajours waveform pattern of
the oscilloscope to become close
to a 45-degrees straight line.
3 Tape Speed MTT-111
3kHz
Connect the
oscilloscope and VOM
to PHONE jack.
PLAYBACK Potentiometer in
motor
Adjust the tape speed so that 3kHz
is obtained at the center of tape.
4 Bias Frequency Normal tape Connect the frequency
counter across C202 RECORD L203 The frequency counter shows 85kHz+-0.5kHz

5
RXD-M505USB/LS-M505
EDCBA
1
2
3
4
5
6
7
SW515
DISPLAY
USB
LED507
IC502
SW501 SW502
SW504 SW503
Q502
Q503
CN1
CN502
LED502
LED501
SW712
SW514SW518SW509SW517
SW508SW512SW516SW513
SW506SW505SW507SW511
LED503
LED504LED505
LED506
LCD501
Q501
D508
D509
IC501
D503
D502
J542
C507
J534
C508
J509
J510
J511
J517
C518
J508
VR501
C503
J519
J523
J522
J521
J518
C520
J520
J524
J525
J526
J527
J528
J529
J530
J531
L501
J507
J515
J516
J505
J504
J532
J533
J535
J538
J536
J537
STANDBY
TUNER/BAND CD/USB TAPE MODE AUX
USB O.T.E TAPE REC
DEMO
OPEN
ALBUM DOWN ALBUM UP EQ X.BASS
SEARCH - SEARCH + RPLAY/PAUSE FPLAY/PAUSE STOP
R516
R512
J512
J513
R514
R504
GOI
R503
J541
J502
12 1
J503
R502
R501
J506
J514
J545
R515
R508
R506
14
14
SENSOR
R538
R520
R519
R507
R518
R517
R509
R511
R510
BCE
BCE
R513
C521
C519
C502
C501
C532
C505
C506
C512
C511
C510
C516
C517
C522
C504
C530
C513
C509
C515 C514
1
16 17
381
32
33
48
49
64
BE
PC BOARD
Refer to the schematic diagram for the values of resistors and capacitors.

6
RXD-M505USB/LS-M505
FGHIJ
1
2
3
4
5
6
7
PC BOARD
D2
D3
D1
U1
CN4
CD (SIDE A)
U2
CN6
U7 U8
U3
U11
U6
D4
D5
Q3
CN7
CN11
U9
Q4
Q17 Q21 Q20
CN13
CN2
CN12CN3
Q9
Q7
Q8
Q6
Q5
L7
R5
R14
L21
L4
L2
L3
L5
L6
L14 EC22
EC4
L22
L20
L8
L19A
L16
TP13
TP12
TP14
TP11
TP8
TP5
TP7
TP9 TP10
TP6
F1
L13
EC20
BC51
EC2
EC3
EC12
EC1
EC11
EC18
XT1
EC7
EC6
EC19
C19
C15
C18
BC29
BC41
C14 C10
R23
C17
C11
R26
C12
R25 R21
C9
R22
C7 BC11
R24 C13 C8 BC42
R56
R55
BC50
EC5
EC17
EC14
EC16
BC48
R58
C44
R76 R77
R7
R67
R70
R8
R84 R81
C64
R79
R9
R78
BC33
EC8
EC10
EC27
EC29
BC2
C50 C49 C47
R75 C48
BC53
C16 R93
R95
R96 R83
R82 R80
BC14
EC25
EC13
EC23
EC31
EC21
BC40 R1
R57
C43
R60
R59
R54
C42
R61 R62
BC8
BC49
R53 R52
R28
EC15
R2
BC44
R4
R44 R45
BC46
BC39
BC45
BC20
R18 R19
BC43
R49
R50
R41
C40
R46 R43
R72
R71
R74 R73
R40
BC37
BC13
BC9R3
R17 BC19
C37
R42
C38
BC18
BC17
BC10
R68
C46
R65
R66
C65
C63
BC34
C24
C23
C22
C21
C20
BC24
R63
R20
BC22
BC21
BC25
BC6
BC23
BC1
BC31
BC30
BC27
R37
C36 R35
C35 R34
C34 R33
C33 R32
C45 BC28
R64
R31
C32
C30
C28
C26
BC26
C31
C29
C27
C25
R30
BC7
R29
BC35
C41
R51
BC36
BC32
BC38
C6
C5
R11
R10
R12
R13 BC47
R48
R47
R6 BC12
BC3
BC5
BC4
R16 R15
BC16
1
161
13
16
14151413
14
28 15
1
25
50 26
154
55
108
109 162
163
216
1
27
54 28
1
24
48 25
1 4
8 5
GOI
14
GIO
BE
BE
BE
BE
BCE BCE
BCE
BCE BCE
BE
R69
Refer to the schematic diagram for the values of resistors and capacitors.

7
RXD-M505USB/LS-M505
ONMLK
1
2
3
4
5
6
7
PC BOARD
Refer to the schematic diagram for the values of resistors and capacitors.
CD (SIDE B)

8
RXD-M505USB/LS-M505
PQRST
1
2
3
4
5
6
7
PC BOARD
CN402
Q412
CN404
CN401
Q401
CN406
IC402
ZD410
D403
D404
D405
D406
CN403
CN103
JK302
CN302A
D413
ZD406
D301
JK400
IC301
Q430
Q431
Q418
Q420
D412
IC401
D107
D108
Q405
Q406
Q419
Q303
Q403
Q404
Q302
IC403
Q425
Q301
Q426
Q428
Q427
Q410
Q414
D410
D411
Q415
D408
D401
D402
Q411
C419
L414
L413
C464
L412
C36
7
C368
C301
3
51
111
102
1
C3
0
R490
C327
C
3
B
31
E
R
C450 C445
L403
C436
C437
C429
C465
L409
19 1
18 2
L404
L405
L407
C444
C463
C338
J428
J429
C431 C441
L401
L402
J427
J406
C418
R365
C340
R366
J435
C489
C488
C401
C402
C409
R420
J431
J321
C326 C325
C440
C328
C320
R409
R421
R410
L436
R353
J302 J303 J304
J305
J430
J404
15
J405
J403
J424
J410
R464
J426
J407
J425
R462
J318
EBC
J411
J432
J417
R406
J416
J433
R314
R372
R330
R331
J301
C470
MAIN
PHONE AUX
R498
R471
R470
R473
R472
R476
R479
C424 R496
R440
R459
C4
5
R
R3
5
R3
5
R359
R360
R361
R363
R362
R475
R369
R370
R367
R340
R371
R491
R310
R463
R405
R401
C405
R407
R403
C403
R402
R404
C404
L408
R460
R461
C438
C439
C420
R483
R484
C427
R469
L210
L211
J105 R344
R301
C334
C333
J104
R474
R455
R456
R477
R478
C451
R434
R429
C453
R424
R423
R425
R422
C480
R454
R458
R480
C462
C443
R468
R481
C448
C423
R437
R439
C452
R441
C449
R482
C479
C477
C315
C311
C310 C316 C312 C321 C323 C322 C324
R312
R315
R316
R368
R341
C460
R445
R448
R499
C442
R494R495
R418
C412
J434
C413
R419
C425
C426
R408
C406
L410
R485 R503
R486
R411
C417
R413
R412 R414
C416
R417
R415
R489
R497
C421
C422
C319
C307
R357 R302 R343 C308 C309 C317 C318
C190
R282
R283
C191
R280
R281
L209 L208
L207
L206
J450
114
28 15
1
4
8
5
1
4
8
5
BE
BE
BE
BE
BEBE
BE
BE
BE
BE BE
BE
BE
BE
BE
BE
BE
BEBE
BE
L
R

9
RXD-M505USB/LS-M505
YXWVU
1
2
3
4
5
6
7
Refer to the schematic diagram for the values of resistors and capacitors.
CN202
CN101
Q104
CN106
Q102
CN305
CN302
CN102 D106
CN105
D104
D202
CN402
IC404
IC201
ZD401
ZD402
Q402
Q413
Q416
Q417
ZD412
D407
Q412
CN405
D105
Q106
ZD407
D415
IC101
IC102
Q214
Q220
D101
Q101
Q103
I
C403
Q
427
Q204
Q201
Q206
Q205
Q219
Q217
Q222
Q221
Q218
Q216
Q202
Q203
Q207
Q215
Q213 Q209
Q212
Q210
Q232
Q231
Q230
Q211
IC405
Q408
Q407
C217 J210
C206
R237
C221 L201
C218 C207
C208
R238
R186
C109
R187
C108
C107
C112
C304
C305 J313
C140
C306
C367
C302 J106
J107
J108
J109
J110
J112
J113
J125 J123
J119
J118
J325
C103
R222
J205
J206
C245
C240
C244 C228 C222
C209
J122
C341
J232
J230
J314
J310
J309
J308
J306
C339
R313
C303
C331
R219
R270
C254
C255
C247
C246
J207
J208
R210
J203
C243
C239
1
IGO
7
14 8
C227
C211
J323
C457 C458
C415 C414
J423
J421
J422
C400
CBE
C
BE
BE
BE
BE
R416
R428
C410
R426
R427
R452
R453
C407
R492
R438
J212
R211
C235
C202 J211
71
R227
R235
J204
L202
J121
J116
J124
J115
J114
X101
R354
J324 BCE
J213
L101
J302
R200
J303 J304 J305
R228
R248
R246
J231
J202
C446
J315
J209
R223
R220
C205
R209
C204
J329
J420
J404
10 1
15
3
112
51
14
110
113
J405
J403
Q108
Q107
D103D102
Q105
R196
R487
R433
R431
C455
C454
C210
R216
R214
R215
R218
R213
R212
C259
C288
FB202
C213
C226
R226
C215
R229
R243
R241C233
R221
R251
R257
C261
R206
C225
C257
R203
R261
C250 C216
R230
C214
FB204
C258
R240
R244
C238
R242C234
C244A
R264
R258
R259
R333
R355
R356
R359
60
R457
R344
R301
R128
R127
R148
R141 R164
R173
R165
R175
R166
R176
R167
R177
R185
R178
R169
R104
R117
R103
R118
R116
R110
R115
R109
R114
R108
R113
R107
R139
R155
R135
R153
C106
C105
J117
J101
J201
R162
R172
R163
R195
R204R202
R201
R225
R236
C224
C223
FB201
C281
C280
C283
C282
L205
C235
C237
C241
R247
R252
R245
R253
R233
R255
R239
R231
C249 R260
R224 C248
R249 R263
R358
R454
R430
R436
R435
C423
R437
C411
R493
R266 R267 R265 R268 R262 C270 R269
R488
C110
R197
R198
R199
R205
R179
R180
R234 R250
R254
R232
R256
FB203
L204
C236
C242
R349
R352
C363
R332
R350
R351
C364
C260
C111
R482
C315
C311
C310
R125
R126
R142
R140
R121 R129 R122
R130
R131
R123
C104
J103
R147
R348
R346
C365
R347
R345
C366
R192
R189
R188
R184 R181
R183 R182 R146 R145 R101 R120 R102 R119
R111 R105 R106 R112
R134
C101 R150 R138 R151 R137 R136 R152
R154
R124
R159
R158
R156
R171
R170
R161 R174
R160
R149
R193
R194
R191
J222
J218
J220
J102
J120
1
11 12
22
23
33
34
44
1
4
8
5
4
5
8
5
14
85
BE
EEBBCC
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BEBE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE

10
RXD-M505USB/LS-M505
ZAA AB AC AD
1
2
3
4
5
6
7
Q902
D917
ZD901
D902
D904
D903
D901
ICP900
D907
CN901
D905
D906
D908
D913
D915
D916
D914
D911
D909
D910
D912
R902
R903
R901
C920
RL901
EBC
BLUE AC1 AC2
L901
C923
C925
C918 C913
C915
C916
C914
C911
C909
C910
C912
C922
F903
C921
F902
BLK
RED-A
RED-B
ORG-B
F904
F901
ORG-A
WHT-AWHT-B
J2
J1
110
C917
TR901
BROWN
POWER
Refer to the schematic diagram for the values of resistors and capacitors.
PC BOARD