KENWOOD MDXG2H Service Manual

Cover page of KENWOOD MDXG2H Service Manual

Service Manual for KENWOOD MDXG2H, downloadable as a PDF file.

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background image
MD PERSONAL STEREO SYSTEM
MDX-G2-H/-L
SERVICE MANUAL
© 2001-7 PRINTED IN KOREA
B51-5745-00 (K/K) 485
PUSH OPEN
CD/MD
High Speed Dubbing System
TUNING
TUNING
TUNER FM/AM
STOP
MD
CD
MENU
SOUND
MD REC
BEST HITS
AUX
VOLUME/MULTI CONTROL
SET
TUNING
MODE
MD PERSONAL STEREO SYSTEM
STANDBY
/TIMER
DISC LOADING MECHANISM
ON/STANDBY
EJECT
ONE
RANDOM
PGM
REPEAT
TRACK NO.
SLEEP
DISC
O.T.T.
PROG.
TOTAL
O.T.E
HIGH-SPEED
AUTO TUNED
SP
REC
LP
BEST HITS
EX. BASS
MD-EDIT
LOUD
kHz
MHz
MD
MD
CD
CD
Panel ass'y
(A60-2046-01): H
(A60-2086-01): L
Handle
(K01-0147-12): H
(K01-0153-12): L
Top cover
(A52-0930-11): H
(A52-0945-11): L
Escutcheon
(B07-2570-02)
Front glass
(B10-3706-04)
AM
ANTENNA
AC IN~
AUX IN
PHONES
Door
(A52-0931-02): H
(A52-0946-02): L
Miniature phone jack
(E11-0353-05)
H: Black Gray, L: Blue
In compliance with Federal Regulations, following are repro-
duction of labels on, or inside the product relating to laser
product safety.
KENWOOD-Crop. 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.
Front glass
(B10-3707-03)
Rod antenna
(T90-0828-05)
Plastic cabinet
(A02-3020-01): H
(A02-3021-01): L
AC inlet
(E03-0374-05)
Miniature phone jack
(E11-0399-05)
70%
Note: Please contact KENWOOD service in your side if you want to get the AC power cord.
background image
MD PERSONAL STEREO SYSTEM
MDX-G2-H/-L
SERVICE MANUAL
© 2001-7 PRINTED IN KOREA
B51-5745-00 (K/K) 485
PUSH OPEN
CD/MD
High Speed Dubbing System
TUNING
TUNING
TUNER FM/AM
STOP
MD
CD
MENU
SOUND
MD REC
BEST HITS
AUX
VOLUME/MULTI CONTROL
SET
TUNING
MODE
MD PERSONAL STEREO SYSTEM
STANDBY
/TIMER
DISC LOADING MECHANISM
ON/STANDBY
EJECT
ONE
RANDOM
PGM
REPEAT
TRACK NO.
SLEEP
DISC
O.T.T.
PROG.
TOTAL
O.T.E
HIGH-SPEED
AUTO TUNED
SP
REC
LP
BEST HITS
EX. BASS
MD-EDIT
LOUD
kHz
MHz
MD
MD
CD
CD
Panel ass'y
(A60-2046-01): H
(A60-2086-01): L
Handle
(K01-0147-12): H
(K01-0153-12): L
Top cover
(A52-0930-11): H
(A52-0945-11): L
Escutcheon
(B07-2570-02)
Front glass
(B10-3706-04)
AM
ANTENNA
AC IN~
AUX IN
PHONES
Door
(A52-0931-02): H
(A52-0946-02): L
Miniature phone jack
(E11-0353-05)
H: Black Gray, L: Blue
In compliance with Federal Regulations, following are repro-
duction of labels on, or inside the product relating to laser
product safety.
KENWOOD-Crop. 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.
Front glass
(B10-3707-03)
Rod antenna
(T90-0828-05)
Plastic cabinet
(A02-3020-01): H
(A02-3021-01): L
AC inlet
(E03-0374-05)
Miniature phone jack
(E11-0399-05)
70%
Note: Please contact KENWOOD service in your side if you want to get the AC power cord.
background image
AM loop antenna (1)
(T90-0865-05)
Remote batteries (R6/AA) (2)
Remote control unit (1)
(A70-1509-05)
Battery cover (A09-1229-08)
Accessories
Cautions
Note related to transportation and movement
Before transporting or moving this unit, carry out the following operations.
(1) Remove the CD or MD from the unit.
(2) Press the
6 key of the MD.
(3) Wait for some time and verify that the display becomes as shown in the
figure.
(4) Press the
6 key of the CD.
(5) Wait for some time and verify that the display becomes as shown in the
figure.
(6) Wait a few seconds and turn the unit OFF.
Operation to reset
The microcomputer may fall into malfunction when a cord is unplugged and
plugged again while the unit is ON or due to an external cause. In such a
case, the microcomputer should be reset as described below:
Unplug the power cord from the wall outlet and, while holding the
ON/STANDBY
key depressed, plug the power cord again. This initializes
the microcomputer. Note that this clears the previously stored memory.
CAUTION
CLASS 1
LASER PRODUCT
INVISIBLE LASER RADIATION
WHEN OPEN. AVOID EXPOSURE
TO BEAM.
The marking of products using lasers (Except for some areas)
The marking is located on the rear panel and says
this product has been classified as Class 1. It
means that there is no danger of hazardous radia-
tion outside the product
Inside this laser product, laser diodes classified as
Class 3A and 3B laser radiation are contained as
alerted by the internal caution label shown above.
To avoid exposure to laser beams, do not open the
cover.
SP
MD
SP
CD
MDX-G2-H/-L
2
CONTENTS / ACCESSORIES / CAUTIONS
CONTENTS / ACCESSORIES / CAUTIONS ............. 2
ADJUSTMENT ............................................................3
PC BOARD ................................................................ 4
SCHEMATIC DIAGRAM ............................................ 7
EXPLODED VIEW ....................................................17
PARTS LIST..............................................................19
SPECIFICATIONS ......................................Back cover
Contents
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MDX-G2-H/-L
3
ADJUSTMENTS
Tuner adjustment
X09(C/6, CN34)
(A)
FM-MPX-SG
FM-MPX-SG
POLAR SG
Dummy antenna
No.
ITEM
INPUT
SETTINGS
OUTPUT
SETTINGS
RECEIVER
SETTINGS
ALIGNMENT
POINTS
ALIGN FOR FIG.
1
TUNING LEVEL
(A)
98.0MHz MONO
1kHz,
±75kHz dev.
35.2dBf (ANT. input)
­
MONO
98.0MHz
X09 C/6
VR31
Adjust VR1
and stop at the
point where
ED1(TUNED)
goes on.
FM SECTION :
SELECTOR : FM
SYSTEM CONNECTIONS
(a) Laser Power
Pickup
0.05~0.15 mW
Optical power meter
No.
1
ITEM
LASER
POWER
INPUT
SETTING
­
OUTPUT
SETTING
Set the sensor sec-
tion of the optical
power meter on the
pickup lens.
PLAYER
SETTING
Short circuit
*OPEN/CLOSE SW.
Press the "PLAY" key
to check that the dis-
play is "03".
*CN26(
1,2), X09
ALIGNMENT
POINT
­
ALIGN FOR
On the power from 0.05 to
0.15mW. when the diffrac-
tion grating is correctly
aligned with the RF level
of 0.8Vp-p or more
FIG.
(a)
2
LASER
CURRENT
Test disc
Type 4
Connect the DC
voltmeter to
CN25(#1 and #2) in
X09(B/6)
Press the "PLAY" key
to check that the dis-
play is "03" or "05"
­
220mV to 550mV
Note:
Type 4disc :SONY YEDS-18 Test Disc or equivalent. (KTD-02)
LPF : Around 47k
+ 390pF or so.
CD player check
For this adjustment, enter the test mode.
TEST MODE : While pressing the [CD PLAY/PAUSE] key, turn power on.
background image
4
A
BD
CE
2
1
3
5
7
4
6
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD (Component side view)
C55
C59
C66
C65
C64
L2
L3
C76
R98
R97
R37
C74
R36
R72
R60
R59
R41
R55
R54
R71
R89
R101
R102
R103
R100
R99
R77
R78
R79
R73
R84
R86
R83
R80
R82
C75
C9
C72
C1
C6
C47
C63
C62
C67
R16
R15
R18
R17
R14
R10
R13
R25
R24
R26
R23
R20
R19
C12
C10
R9
R6
R8
R7
R3
R4
R5
R27
R28
R29
R40
R39
C41
X2
C1
1
C7
C57
C32
C37
R68
R119
R66
R65
C42
R120
R118
C85
C84
R1
17
R114
R115
R112
C83
R113
C82
R43
C36
R42
C43
R116
21
1
1
14
15
28
100
1
25
26
50
51
75
76
10
1
20
11
1
4
5
8
8
1
16
9
1
25
26
50
51
75
76
100
10
1
20
11
1
26
18
1
12
25
36
24
13
37
48
B
E
B
E
B
E
B
E
B E B
MODE2
BLUE
RED
RED
WHITE
BLUE
WHITE
RED
BLACK
BLUE
W
E
FWE
SLED+
SLED
FE2
RF
IOP2
VC
FRDT
FWDT
GND
RST
VDD
NC
F
TE1
FE1
SPDL-
SPDL+
TE2
VC
IOP1
Q3
Q1
Q2
Q6
Q5
D3
IC3
D2
D1
IC1
IC2
IC7
IC4
IC8
IC5
IC10
D5
D6
CN3
CN1
WH1
WH2
WH3
WH2
WH3
WH1
C35
X1
C80
C2
C3
C53
L1
L4
R67
R64
R69
R35
R70
R51
R50
R52
R47
R46
R49
R48
R57
R56
R58
R45
R92
R93
R94
R88
R95
R96
R87
R76
R74
R75
R85
R31
C71
C70
C8
C5
C46
C23
C22
C38
C69
C52
C48
C58
C54
C18
R12
R30
R22
R21
C13
C17
C16
C15
C40
C33
C51
L9
C31
W4
C30
C45
W5
C56
C73
C68
C14
C39
R53
W2
R62
W6
L8
R126
R128
W3
C60
C44
W7
O
I
ADJ
B
E
B
E
E
B
B E
B E
B
E
1
4
5
8
R122
R129
R123 C88 R125 R127
C89
R121
C86
R124
C87
C81
DISC
ID
REC
PLA
Y
DISC
IN
SW
SL
T
IC1
1
Q9
Q8
Q1
1
Q10
Q7
Q4
D4
IC6
S2
S3
S5
S4
X33-1260-00 A/2 (J70-1452-02)
X33 B/2
S1
background image
FH
J
L
N
GI
K
M
O
2
1
3
5
7
4
6
Q301
D302
D301
Q399
IC56
IC53
IC55
IC51
IC54
D501
IC41
Q204
D202
D229
Q205
IC22
D203
IC25
IC21
Q2
Q1
IC1
IC23
Q201
C327
R329
R328
R321
C331
R334
R333
R332
R331
R325
C339
C338
R327
C337
C333
R326
R324
C335
C340
C341
R317
C330
R320
C329
R301
C326
R330
R304
R306
C305
C303
C301
R307
C313
C314
R315
R308
R309
C309
R310
C310
C302
C324
C323
C316
R305
R335
R336
C307
C328
C353
C347
C355
C348
C349
C345
C320
C317
R31
1
C321
R312
C319
R313
C346
R337
R356
L304
L305
C352
R355
R353
C351
R352
C350
R354
R350
R351
R804
W516
R803
C827
C505
L871
L872
C598
C523
C517
C518
C525
C527
C529
C524
C526
C528
C530
R532
R533
C562
R558
R530
R531
R544
R545
R547
R546
R559
L503
L504
R541
R805
R501
R502
R504
R505
R506
C409
R404
C408
C407
C434
C435
C433
C432
R422
C423
R421
R420
C429
C428
R401
C419
C413
C415
C81
1
R507
C758
R785
R784
C597
R584
R703
R702
L506
R704
R700
R701
W850
C599
C600
C702
C703
R706
R705
R774
C855
C754
R762
R763
R760
R761
C755
R780
C756
C752
C757
C856
R801
C753
C750
C751
R779
R781
R782
R783
R773
C760
C761
C762
R777
C759
C801
C854
C857
C858
C859
C850
C810
R802
C861
C814
C815
C816
C853
C817
C860
C818
C819
C820
C821
C822
C823
C824
C825
C826
C852 C851
C800
C501
C872
C873
1
3
5
4
1
4
5
8
5
4
1
3
1
4
5
8
30
31
50
51
1
100
81
80
36
19
1
18
EB
E
B
C239
R202
R262
C225
C261
C262
R296
R268
C258
C259
R269
C256
R265
R264
EB
R263
C257
R267
R259
R260
C264
R266
C266
C270
R248
C247
R295
1
80
C263
21
20
R294
60
R242
61
C243
R243
C244
C242
C250
R250
R204
R201
C252
R2
C11
R1
R14
E
B
BC
E
BE
C
17
16
R223
R258
E
IG
O
B
C255
R261
R226
R257
41
40
R213
R234
R233
C233
R232
R228
R214
R216
C224
R225
R210
C227
C229
C230
R224
C20
R16
C2
C3
W21
C219
W271
C222
C223
18
1
R230
C237
C251
R212
R211
R220
19
C218
36
R5
32
33
1
64
49
48
R9
C1
C21
C6
R25
R23
C22
C23
R256
C212
R254
R252
R255
26
R251
C216
C214
R218
C213
R215
R217
R206
R219
C217
14
C211
1
W272
13
C249
L601/W299
C248
R240
R245
R221
E
B
R203
R227
R205
FM TUNED
ADJ
CLK
RST
X501
GND
VCC
CE
EPM
BUSY
C398
W314
C399
W350
CF33
C334
C332
C336
R323
X301
R318
R319
C308
R314
C304
C315
R316
C325
C312
C31
1
L303
C322
C318
W316
W322
W319
W324
W326
W331
W327
W309
W302
W330
W329
W328
W311
W312
W313
W304
W303
W305
W308
W306
W325
W323
W318
W320
W321
W317
W315
W310
W307
W517
W707
W520
W519
L863
C862
C593
C594
R555
R516
R515
C592
C586
C584
R582
R580
R579
R578
R574
R583
C595
R581
C591
R577
C590
C588
C589
C587
C585
C583
C596
C582
R573
C581
R571
R572
R514
C544
R517
R51
1
C521
C511
C510
C533
C513
C512
C514
C519
C520
C531
C535
C537
C539
C541
C522
R510
R512
R513
C532
C536
C538
C540
C542
R543
W461
C561
C560
C563
W702
R535
C566
R552
R534
R537
R539
C565
R548
R540
R538
R536
R542
R549
R550
R551
R556
R557
C564
R553
C567
L862
R503
C503
C502
C504
R412
R415
R414
R413
C437
C411
R402
R409
C406
R411
R423
C422
C421
R410
R417
R419
R416
R418
C417
C418
R405
D425
R403
R408
W431
W440
C420
R778
W706
W708
W704
W705
C506
W700
W518
W701
W703
R508
W482
W489
W452
W453
W709
W710
R518
W712
W483
R775
R776
W713
W853
W881
C802
R519
R771
R772
R520
R521
W883
W882
W880
W851
W852
W854
W884
POWER
AMPLIFIER
CD LOWPASS FILTER
WHT
WHT
CF32
CF31
C427
C426
W515
W510
W426
W404
W514
W406
W513
W512
W401
W511
W427
W409
W407
W402
W408
W405
W428
W477
W501
W473
W466
W403
W451
W443
W445
W446
W492
W505
W508
W507
W506
W509
W460
W454
W412
W411
W413
W414
W415
W416
W417
W418
W419
W420
W422
W432
W439
W437
W410
W434
W433
W438
W429
W430
W450
W476
W478
W480
W469
W471
W448
W449
W464
W465
W455
W457
W456
W458
W424
W441
W462
W463
W467
W468
W459
W447
W436
W435
W490
W491
W479
W502
W488
W493
W503
W498
W495
W500
W499
W497
W504
W442
W496
W487
W486
W481
W474
W475
W494
L860
T401
SELECTOR
CIRCUIT
L301
VR31
L302
X502
L502
C439
T402
C405
C401
C402
C431
C430
C416
K401
R406
C403
C404
L505
L501
R786
D426
RXD
TXD
W470
C534
MD REC
PAUSE
CD PLAY/
VOL/MULTI UP
PAUSE
MD PLAY/
R41
R42
SKIP UP
R40
R39
R34
R35
SOUND
BEST
HITS
R33
R32
SET
TUNER
FM/AM
SKIP DOWN
VOL/MULTI
STOP
R37
DOWN
R38
R36
R30
MENU
AUX
R31
W220
L201
C234
R241
W235
W216
W202
W230
W231
R247
W242
C246
W224
DSP
X221
W221
C206
W204
W208
W2
R15
R17
W12
POWER
W3
R7
C228
W214
C215
W215
MD
EJECT
C232
C235
R236
W218
C231
W240
R235
W212
W213
W21
1
W222
C220
W223
W227
W243
C7
C8
W209
5V AVR
R222
W210
C291
C226
W225
C205
W207
RF
AMP
W5
R11
W13
R22
W1
R13
R12
C10
R21
ED1
R6
W4
C4
VC
1
2
R20
W8
W1
1
W7
R3
W10
W6
W9
C5
R4
R18
R19
W201
4CH DRIVER
W232
W217
R253
W205
C293
RF
R246
W234
C265
C245
C240
C241
W238
W226
W228
W229
W219
C221
LD
VCC
W233
15
1
1
2
16
2
1
2
1
5
42
6
1
18
1
71
62
G
I
10
1
O
25
1
18
1
E
B
51
B
B
B E
E
E
2
1
2
4
14
2
15
1
E
B
G
I
O
1
12
8
11
1
12
22
21
12
13
24
1
1
2
E
B
10
2
11
1
15
1
13
13
2
26
E
B
21
4
1
1
2
3
4
51
52
53
54
3
21
0
11
1
2
1
D303
D504
D502
D503
Q8
IC52
D435
Q406
D430
D429
D428
D427
Q401
D415
D414
D418
D417
D416
D420
D419
Q405
Q404
D423
D422
D421
Q403
Q402
D424
D433
D434
D432
D431
D41
1
D410
D413
D412
D407
D408
E3
CN34
CN33
IC32
CN35
IC31
A301
CN32
CN55
CN53
CN51
CN52
CN42
CN41
J401
IC44
J402
HEADPHONES
AUX IN
D406
IC43
D405
IC42
CN54
WH69
WH70
WH70
E5
J701
X09-6530-21 A/6 (J70-1500-11)
X09 C/6
X09 F/6
S7
S4
S14
S13
S10
S6
S5
S1
1
S15
S16
S12
S9
CN2
X09 E/6
S8
S3
CN26
X09 B/6
S1
E2
CN24
D201
S2
A1
D2
E1
X09 D/6
CN1
D1
CN23
CN22
CN21
CN25
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD(Component side view)
5
6

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