Page 1
MX-K3
In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the
parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the " "
mark nearby are critical for safety.
When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer.
(Except the J and C version)
2-2
Page 2
Block diagram
7
6
MIC JACK
J850
5
4
3
2
MIC AMP. board
REC/PB HEAD
AUX IN
JA301
ANT-TERMINAL
JA302
IC852
Mic amp.
IC851
LPF & ECHO mix
PB HEAD
(A cassette)
(B cassette)
Cassette Deck
Main Motor
Head/Half/High/Rec FWD
Turn Table
Motor
(Disk Motor)
Disk count
/Table position
switch
Tray Motor
M
switch
M
M
Tray switch
Pick Up
Focusing/Tracking
Feed/Spindle
Motor
M
Rest switch
L
R
AM
FM
FW852
CN307a
CN308a
CN605
MAIN board
L2
LC1
BPF
2
Mic
CN306
PB R 1
CN307
RB L
REC L
RB R
CN308
REC R
CN305
CN604
CN603
CN601
CN602
IC301
Mic mixer
Q405
Q505
Q403
Q404
Q503
Q504
A/B, TPA, TPB
SOLA, SOLB, MOT
DM+
DM-
TM+
TM-
T+
TF+
F-
1
IC1
AM/FM DET
24
31
13
3
IC401
REC/PB
24PB L
23
16
DCNT, TPSW
UPSW, DWSW, CLSW, OPSW
AMP.
CH2_A
PREOUT2
CH1_A
PREOUT1
CH2_B
2
CH1_B
REC_OUT2
9
REC_OUT1
A/B_SW
CW, CCW, CNTT
IC611
RF&SERVO
IC621
CD DRIVER
REC_IN2
REC_IN1
1919
A/BRPHD
ARF, RFENV, BDO
OFT, /RFDET
16
17
20
5
14
11
L OUT
R OUT
PB L
PB R
Q402
Q502
IC601
Digital servo
Processor
FOD, TRD, KICK, TRV
TVD, ECM, ECS
REC L
REC R
Q401
Q501
&
MX-K3
Head
CN1101
T951
SW
SW
Volume
LED
A.BASS
switch
Phone
L
R
J303
SP L
SP R
S999
(For US/UX/UT)
(For UY)
AC IN
L
N
AC IN
L
N
7
LIN4
28
RIN4
Source Select
5
LIN2
2
RIN2
6
LIN3
1
RIN3
8
MUXO_L
9
IN(L)
10
MUXO_R
11
IN(R)
4
LIN1
3
RIN1
IC101
IC2
PLL
L OUT
R OUT
3
27
1
IC102
AMP
5
26
VCK, VDATA
MPX
7
POWER AMP. board
15
IN 2
1
FW303
CN902
IN 1
IC304
Power amp.
OUT2+/-
OUT1+/-
CN901
10, 11
6, 7
Power supply
&
Control
CN951
POWER TRANS. board / VOLTAGE SELECTOR board
T951
FW951
POWER TRANS. board
FW951
IC402
SCK, SDO
CN701
Shift Register
75
73
SCK, SDI, SDO, TUCE
RECM, PBM
MDATA, MCLK
CN301 CN302
CN703 CN702
IC701
CPU
&
FL driver
FL display
FW701
FW701
SWITCH board
FW702 FW702
Active bass EX.
CONTROL/FL board
switch board
1
BCDEFGH I JA
2-3
Page 3
Standard schematic diagrams
Head AMP, tuner and audio section
7
C509 1000P
R372 22K
SVC203
C303
50V2.2
C309 0.01
IN
LC1 BPF
+
CF1 10.7MHz
+
Q325
DTC114YS
+
R5 100K
2
OUT
GND
R506 6.8K
Q324
DTA114YS
R301 1K
R308 10K
R309
10
C310 16V100
R6 47K
C22 0.001
C20
0.01
R11 330
R505 10K
C311
0.01M
C2 4.7P
3
L.CH.
PB-HD
CN307
1
6
TAPE.A
RP-HD
TAPE.B
RP-HD
5
E-HD
2
3
PB-HD
CN307a
R.CH.
R.CH.
1
2
3
4
5
6
7
8
L.CH.
CN308a
4
R521 1K
1
2
3
R421 1K
Q403 2SC2785
1
2
3
4
5
6
7
8
CN308
C417 470P
R415 10K
C339
0.01
R1 1.5K
KTC3200
Q322 DTA114YS
Q323
2SC2785
C307 820P
BC1
Q504
Q505
2SC2785
R523 2.2K
R422 1K
R522
1K
DTA114YS
R371 22K
R373 2.2K
C301 0.001
L301
BIAS-COIL
C308
0.015-M
C18 0.01
Q503
2SC2785
R423 2.2K
Q404 2SC2785
Q405 2SC2785
C517 470P
R515 10K
Q302
R307 2.2K
Q301
DTA114YS
C7 12P
3
C4 0.022
C8 5.6P
R2 100K
C9 0.047
L2 AM BLOCK COIL
L1
2.2uH
2
AM
GND
GND
ANT-TERMINAL
FM
FLAME GND
JA302
C23
C6 10P
1SS133D31SS133
D4
1SS133
D5
R3 1K
0.01
D6 1SS133
1SS133
D1
D2 1SS133
C1 0.022
R4 100K
D7
C5 0.047
1
C15 0.022
C16 25V10
L5 100uH
1
R370 1K
0.0068M
L3 FM-RF
KTC3194(O)
C12 0.01
C505 10V100
C405 10V100
R406 6.8K
R310 39
Q303
KTC3203Y
C312
C11 0.047
L6 22uH
Q1
R12
470K
C304
0.001
100
R504
C504
0.018-M
+
R502 6.8K
R503 9.1K
R501 100K
C503 33P
24
23
22
NF2
CH2_B
CH2_A
C502 680P
C501 680P
680P
CH1_A1CH1_B2NF13EQ14PREOUT15MIX_OUT6GND17EQSW8REC_OUT19REC_NF110REC_IN111GND
C402
C401 680P
C403 33P
R401 100K
R403 9.1K
+
R402 6.8K
C404
0.018-M
100
R404
C409 1000P
R405 10K
Q304 KTA1267Y
R312 1K
R311 12
Q305
DTC144ES
RPHD
C10
0.01
C24
R7 47K
R17 100
C21 8.2P
D8 SVC203
L4 FM-OSC
R16 10
C3 0.001
R8 10
22
24
21
23
GND_2
VCC _2
FM_RFIN
FM_RFOUT
R9 10
AM_RFIN1REG.2AM_OSC3VCC_14FM_MIXOUT5GND_16IF_BUFFER7ST_IND8AM_MIXOUT9FM_IFIN10AM_IFIN11AGC
10V100
R14 330
R13 33
C19 0.01
C507
21
EQ2
C407
C71
R18
C13
+
C14
0.022
+
25V4.7
20
PREOUT2
+
25V4.7
Q306
DTC144ES
BIAS
R19 1.2K
KTC3195Y
0.001
220K
C17 3P
19
20
FM_OSC
R303 1K
+
C325 50V2.2
H.Tape A / L.Tape B
19
18
VCC
A/B_SW
H.Cro2/L.Nor.
R305 10K
R313 10K
0.001
Q2
+
C25 25V4.7
18
17
R_OUT
MPX_IN
DET_OUT
R10 100
CF2
MX-K3
R304 330
+
C305
16V100
+
C510 0.0033C410 0.0033
C508 25V4.7
R509 150K
R507 68K
+
C511 25V10
14
15
16
13
17
CG
ALC
IC401 TA8189
C411 25V10
+
R409 150K
R317 4.7K
R318 10K
R315 10K
IC1 LA1823
+
A/B
C37
0.018M
C41
50V2.2
+
+
C40
50V2.2
C33 25V22
R306 1M
R410 1.2k R510 1.2K
R316 10K
H-Tape.B
L-Tape.A
R20 100
Q3 DTC114YS
Q4 DTC114YS
C34 0.022
+
C306 10V47
R23 5.6K
R24 5.6K
CDA10.7MG1-A
R21 3.3K
C38
0.001
C408 25V4.7
16
10.7MHz
DTC114YS
L_OUT
REC_OUT2
R407 68K
+
R314 10K
Q307
R27 22
C27 0.0022
15
AM/FM_SW
T1
AM IFT
REC_NF2
1SS133
1SS133
C36
14
ST/MON_SW
REC_IN2
12
D301
D302
0.018M
13
FM_DET
12
Q308 DTC144ES
C204
CF3
C514 1000PC414 1000P
C515
25V4.7
C415
25V4.7
PBM
+
50V1
C28 50V0.47
C29 50V0.22
C30 50V3.3
D9 1SS133
+
+
R418
2.2K
R518
2.2K
+
C44 10P
R22 100K
Q501 2SD2144SQ401 2SD2144S
R512 1.8K
R412 1.8K
Q402 2SD2144
C413
C513
Q502
2SD2144
50V1
C104
C43 0.001
R25 4.7K
R26 4.7K
C42 0.001
+
+
+
Q5
DTA114YS
C39
0.001
R513 22K
R413 22K
180P
180P
C313 0.01
R414 4.7K
C50 16V47
R15 10K
FLAME GND
R417 22KR517 22K
RECM
R514 4.7K
C345 0.01
C518 0.0022 C418 0.0022
C67
0.01
C51
12P
C52 12P
C70
+
X1
75Khz
C61 100P
C62 100P
C63 100P
R76 10K
0.001
R52 4.7K
HEAD SW
HALF SW
HIGH SW
DETB
DETA
EXCE
C53 1-TF
C54
0.0039
21
GND
MPX
SD0
R416 6.8K
SCK
C323 0.01
R54 1.8K
4.7K
R55
C55 470P
19
18
17
16
20
PD
LPFI
VCC
LPFO
FMIN
R61 1K
R62 1K
R60 1K
R63 1K
1SS133
1SS133
D50
D51
TUCE
SDO
SCK
SDI
R516 6.8K
R51 1K
R53 3.3K
22
XT
XTI1FM2CE3DI4CLOCK5DO6VCOSTOP7AM/FM8LW9MW10SDIN
IC2 LC72136
R321 2.2K
R322 2.2K
47K
R320
R319 22K
TPA
R339 2.2K
R340 2.2K
R341 2.2K
A/B
R58 100
C56 0.01
15
14
NC
AMIN
R66 47K
R67 47K
R68 47K
R69
R70 47K
R65 1K
R64 1K
C320 150P
C57 0.01
R56 2.2K
13
12
IFIN
IFCNT
11
47K
MX-K3
R323 2.2K
R324 2.2K
R325 2.2K
C314
0.01
SW5V
SOLA
SOLB RPHD
MOT
A/B
C321 150P
C322 150P
C58
0.001
+
C59
10V100
R57 330
L50
220uH
R59
10K
C60
0.01
R75 22
70uS-A
70uS-B
15
22K
R330 47K
R329
R328 10K
TPB
1
STRB
2
DATA
3
CLK
4
Q1
5
Q2
6
Q3
7
Q4
GND8QS
IC402 74HC4094
(PORT EXTENSION)
C65 0.022
To A-4 on page 2-6
TO CTRL PWB
OPN
23
TO CD SCH.SECTION
OPN
CLS
CW
HALF-SW
REC-FWD
HIGH SW
123456789101112131415
F-REC
HALF-A
GND
HDP-A
HALF-B
PDET-A
R-REC
SOL-A
SOL-BM+PDET-B
+5V
HDP-B
CN305
123456789
1011121314
Q311
R364 15K
R73 1K
KTA1273Y
C316 0.01
D322 1SS133
3.3K
R334
D312 1SS133
+
C324 10V100
Q8 KTA1267Y
R74
33-1/4W UNF.F
FLAME GND
Q312 KTC3199
150
R336
R335 4.7K
C338
0.001
Q310 KTC3199
150
R333
SW5V
+
C346 10V10
D10
1SS133
Q309 KTA1273Y
C315 0.01
D321 1SS133
R331 3.3K
R332 4.7K
16
VCC
15
OE
14
Q5
BC2
13
Q6
BC1
12
Q7
11
Q8
BIAS
10
Q'S
9
BIAS
RPHD
BC1
FTU
Q7
2SC2785
R71
3.3K
+
R72
100K
C66 16V47
HEAD SW
Q313
KTA1273Y
C317
16V100
+
3.3K
MOTSOLBSOLA
R202
6.8K
R102
6.8K
R101 39K
C101
100P
C201
100P
L304
F.B
S1
C319
16V1000
C202 50V1
C102 50V1
C203 50V1
To J-6 on page 2-8
R338 1K
Q314
DTC114YS
C326
0.01
C103
50V1
C106
25V4.7
C206
25V4.7
R375 4.7K
12345
MIC
A.G9VECHO
TO MIC AMP.
+
R376 4.7K
+
+
+
+
+
+
R377
220
C365 16V22
C366 50V1
(ECHO)
D.G
+
C318
25V4.7
+
R337
R201 39K
S2
JA301
To I-2, I-3
on page 2-5
To I-6
on page 2-5
FCD
R369
47K
Q318
DTC114YS
R374 22K
R361 22K
D323 1N4001
D324 1SS133
L305
10uH
1
2
3
4
5
6
7
8
C107
JP101JP201
+
9
25V4.7
10
C207
+
11
25V4.7
12
13
C210 0.082-M
C211 0.082-M
+
C117
+
25V10
C367 50V1
3
1
2
5
6
FK4TK
MIC
VCC
LOUT
16
1K
R378
C368 0.33-M
R379 22K
+
R380 10K
CN306
CCW
CNTT
OPSW
CLSW
UPSW
DWSW
DCNT
TPSW
MCLK
MDATA
R363
470
IC101 TDA7440D
RIN3
RIN4
RIN2
LOUT
RIN1
ROUT
LIN1
AGND
LIN2
VS
LIN3
CREF
LIN4
SDA
MUXO-L
SCL
IN(L)
DGND
MUXO-R
TRE(R)
IN(R)
TRE(L)
BIN(R)
PS1
BOUT(R)
LP
BIN(L)14BOUT(L)
C110 0.082-M
C370
25V10
+
8
LIN
BIAS7GND
RIN9LP10LP11LP12ROUT13A14B15C
IC301 BA3837
U VERSION ONLY
+
C217 25V10
C369 0.068-M
Q320
DTC114YS
CD/TAPE PLAY SIGNAL
Q321
DTC114YS
28
27
26
25
24
23
22
21
20
19
18
17
16
15
(KOK)
C341 0.01
Q319
KTA1267Y
D314
1SS133
C113 0.12-M
C213
0.12-M
C327
+
16V10
C212
0.0056-M
C112
0.0056-M
C111
0.082-M
R112 5.6K
R212 5.6K
LVL
OPN
CLS
R362
C328 16V47
C329 0.01
+
+
C116 50V1
C216 50V1
R215 22K
R115 22K
C334
50V1
R350 1K
CLS
CCWCWCNTT
202122
CCWCWCNTT
Q327
KTA1267Y
2.2-1/4W UNF.F
C330
100P
VCK
2SC2785
+
TPSW
101112
13
OPSW
CLSW
UPSW
DWSW
DCNT
TPSW
TPA
TPB
MCLK
MDATA
SW5V
R367
10K
R368
C205 50V1
+
C343 10V1000
C342 0.01
D325 1SS133
C105 50V1
Q101
2SC2785
R103 2.2K
R104 2.2K
+
R105 150K
C114
+
C331 10V100
C214
0.1-M
1K
R205 150K
R204 2.2K
R344 1K
R345
R203 2.2K
R347 1K
R346 47
VDATA
AHB
15K
R352
Q316
2SC2785
Q315
R351
100K
180
R353
TPA
MDATA
MCLK
OPSW
CLSW
UPSW
DWSW
DCNT
TAPE REC SIGNAL
RADIO SIGNAL
TPB
DETB
DETA
DETA
DETB
47K
+
+
R106 6.8K
0.1-M
D307 MTZ5.1J
R348 2.2K
820
R354
C335
25V4.7
33
R355
220
R356
RECM
LVL
RECM
LVL
45
G
+
-
R206 6.8K
+
SW5V
PBM
(KOK)
114215316417518619789
PBM
SW5V
(KOK)
(ECHO)
R114 1K R214 1K
R108 10K
-
+
6
7
C215 10V100
Q201
2SC2785
D308
1SS133
R357 10K
CN301
(ECHO)
FFC-23P
TO CD SCH.SECTION
SQCK
SUBQ
MLD
To I-6
on page 2-5
R213 10K
R113 10K
C115 10V100
XRST
MOMU
STAT
REST
BLKCK
GCTL
FTU
MPX
AHB
EXCE
SDO
SDI
SCK
TUCE
XRST
FCD
REST
MOMU
MLD
SUBQ
SQCK
VCK
VDATA
STAT
BLKCK
GCTL
CD+5V
C208 25V4.7
+
+
L306 F.B
C108 25V4.7
D309
1SS133
R109
10K
R111
1.2K
+
R110
2.2K
123
IC102
BA15218
VCC
8
R210
2.2K
+
C109 25V4.7
+
C332 16V47
+
C209 25V4.7
D.GND
OUT.L
A.GND
OUT.R
SW5V
M.GND
M+9V
L307 F.B
+
R209
1.2K
R208 10K
R349 220
R211 10K
D311
1SS133
D310
1SS133
Q317
2SC2785
D313 1SS133
R359
470
+
+
C337 16V47
R358 100K
C336 50V1
R365 3.3K
R366 6.8K
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
CN302
FFC-20P
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
C371
0.01
1
2
3
4
5
6
7
8
9
10
11
FTU
MPX
AHB
EXCE
SDO
SDI
SCK
TUCE
XRST
FCD
REST
MOMU
MLD
SUBQ
SQCK
TO CONTROL PWB
VCK
To A-5 on page 2-6
VDATA
STAT
BLKCK
GCTL
To I-5,I-6 on page 2-5
TO CD SCH.SECTION
CN303
R.OUT
A.GD
L .OUT
5V6
D.GND
M.GND
B.CTRL
SFTY
CDA.GND
9V
TO POWER PWB
TU.GND
To A-5 on page 2-7
BCDEFGH I JA
2-4
Page 4
MX-K3
CD servo control section
7
R646 220K
TBAL
270K
R645
FBAL
C662
NOMT
R651
R653
R654
R655
D607
1N4001
C625
NOMT
R657
3.9K
R660
10K
R659
100K
FE
TE
C641
NOMT
VDET
GCTL
LDON
C637
0.47
C638 16V0.1
TP2
Vref
+
C639 10V100
/RFDET
OFT
BDO
ARF
RFENV
FOD
TRD
KICK
27K
ECM
1.2K
ECS
12K
TVD
24K
TRV
OPN
CLS
UPSW
DWSW
CLSW
OPSW
DCNT
TPSW
R619
D601 1SS133
TRV
TVD
ECM
ECS
KICK
TRD
FOD
FBAL
TBAL
FE
TE
RFENV
VDET
OFT
/RFDET
BDO
LDON
GCTL
ARF
100
21
22
23
24
25
26
27
28
29
30
31
32
33
R615
1K
34
35
36
C608
37
0.1
38
39
40
R617
1M
C609
470p
TP3
ARF
+
C610 10V220
33K
CN601
CN602
CN603
CN604
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
6
FM-
5
/REST
4
SM+
3
SM-
2
REST.G
1
FM+
1
2
3
4
5
6
7
R673
C646
2700p
33K
R672
C647
2700p
R640
6.8K
R639
6.8K
B+D
A+C
E
0.022
C636
F
F+
R633
T+
10
TF-
TMTM+
1
2
3
DM-
4
DM+
5
C661
C660
1000P
C648
0.022
IC611
AN22000A
C62410V47
120
+
R602
D602 1SS133
39K
R635
12
C622
50V10
KTA1267
Q601
Q602
DTC114YS
DM+
DM-
R649
+
2.2
CNTT
R666
1K
10
R632
R634
1000P
32
R650 4.7K
C652
390p
C653
390p
10K
10K
10K
10K
10K
10K
R647
R648
R629
R630
R611
R631
8.2K
R671
8.2K
R675
B30D
26
29
28
E27F
32
C31A
PD1LD2VCC3RFN4RFOUT5RFIN6ARF8CAGC
7
C6350.1
+
C629 0.047
6.3V220
C631
C626
0.1
31
GND
OUT6-
NOMT
R636
R637
22K
2.2K
R638
3.3K
CW
CCW
18K
18K
R665
R664
R667 33K
27
30
29
28
26
GND25GND
IN6-F
IN6-R
OUT6+
MUTE IN
OUT1-1OUT1+2OUT2-3OUT2+4IN25IN16VCC7VCC8REG-I9REG-B10REG-OUT11IN3-R12IN3-F13OUT3+14OUT3-15GND
FM SM TM
C651
25V0.022
C649
+
50V10
470K
R643
C643 100p
R644 150K
C642
10p
24
23
22
TEN21FEN
FBAL25TBAL
GCTL
FEOUT
CEA93TOUT10CBOO11BDO12COFTR13NRFDET15GND
NOMT
0.039
C632 0.047
C633 1500pF
C634
4700p
C628
C627
33p
R601
2.7K
R668
2.7K
T-
C659
24
23
20
22
390p
IN521IN4
VCC
OUT5+
BIAS IN
+
C650
10V220
C645
C644
0.022
TEBPF
0.022
C630
2200p
R670
C640
390K
0.022
R618
17
18
68K
R616 39K
VREF
VDET
R641 0
R642
150K
20
19
TEOUT
OFTR
16
14
TP1
GND
C655
R658 NOMT
C654
+
NOMT
0.0068
C657
R661
+
C656
T+
19
OUT5-
NOMT
NOMT
0.0047
F-
F+
C658
18
17
390p
OUT4-
OUT4+
IC621
BA5936S
16
R652
1.2K
R662 5 .6K
R663 5.6K
D606
1N4001
CD MECHANISM
OPTIMA - 7A
1
2
6
5
3
4
5 6
HDU100
Focusing Tracking
10
9
8
7
1
1
F2
2
SR
3
T1
4
NC
5
F1
6
K
7
T2
8
MD
9
1K
LD
10
VR
11
G
12
F+
13
T+
14
T-
15
F-
4
6
5
REST-SW
4
3
2
1
FEED SPINDLE
3
TRAY MOTOR
Pickup SW
1
2
3 1
1
2
1
2
Up
Down
3
2
1
2
1
2
Tray SW
Open
Close
Disc Count
2
SW704
Table Position
Turn Table Motor (Disc Motor)
1
2
3
4
5
6
7
1
2
3
4
5
C675
0.1
CN605
XRST
STAT
SQCK
SUBQ
C673
R614 1K
100p
C607
0.022
TP8
19
16
15
18
17
20
PMCK
RST
STAT
TRV
TVD
PC
ECM
ECS
KICK
TRD
FOD
VREF
FBAL
TBAL
FE
TE
RFENV
VDET
OFT
TRCRS
/RFDET
BDO
LDON
PMCK
SMCK
DMUTE
SQCK14SUBQ
PLLF241TOFS42WVEL43ARF44IREF45DRF46DSLF47PLLF48VCOF49AVDD250AVSS251EFM52PCK53VCOF254SUBC55SBCK56VSS57X158X259VDD
R622 68 K
R623 120K
R621 68K
R620 NOMT
C611 16V0.1
R624 1.5M
C612 0.022
C613 0.022
BLKCK
TLOCK
TP5
12
13
BLKCK
IC601
MN662748RPM
0.15
C614
R625
330
C623
NOMT
FLOCK
TP6
FLOCK11TLOCK
(DTA114YS)
NOMT
Q603
R627
NOMT
MLD
MCLK
MDATA
16V0.1
BCLK1LRCK
MSEL
OUTR
AVSS1
OUTL
AVDD1
/TEST
IOSEL
DEMPH
IPFLAG
CLDCK
+
C605 10V220
C606
80
SSEL
79
78
PSEL
77
CSEL
76
RSEL
RESY
CRC
CLVS
FLAG
FCLK
R604 1K
75
74
R603 1K
73
72
71
70
69
68
DEMPH
67
66
65
64
63
62
61
R605 220
+
TP9
C621 10V220
C620 16V0.1
TP10
FLAG
TP11
IPFLAG
C603 0.0022
2200P
C604
C602 0.0022
SENSE
TP7
10
SENSE
8
9
MLD
MDATA
3
2
4
6
5
7
TX
DVSS1
MCLK
DVDD1
SRDATA
BYTCK/TRVSTP
MOMU
60
Bare Jumper
X601
16.9344MHz
12p
C616
JP601
R669
C617 12p
L601
270
R656
2.7K
C601
0.33
10uH
C619
16V0.1
C618
50V10
+
560K
EFM
TP12
R626
NOMT
R628 5.6K
D604
NOMT
1uF
C663
D603
NOMT
C615
D605
1N4001
FB601
FB
GCTL
SQCK
SUBQ
MLD
XRST
MOMU
STAT
MCLK
MDATA
BLKCK
OPSW
CLSW
UPSW
DWSW
DCNT
TPSW
OPN
CLS
CCW
CW
CNTT
GCTL
SQCK
SUBQ
MLD
XRST
MOMU
STAT
MCLK
MDATA
BLKCLK
REST
CD+5V
D.GND
OUT.R
A.GND
OUT.L
SW5V
M.GND
M+8V
OPSW
CLSW
UPSW
DWSW
DCNT
TPSW
OPN
CCW
CNTT
To J-6,J-7
on page 2-4
To H-6
on page 2-4
To J-6
on page 2-4
To J-5
on page 2-4
To H-6,H-7
on page 2-4
CLS
CW
CD SIGNAL
1
BCDEFGH I JA
2-5
Page 5
FL display and CPU section
MX-K3
MX-K3
JP701
YES
Nil
Nil
YES
18K
18K
18K
18K
18K
Nil
Nil
18K
5.6K
18K
Nil YES
Nil
Nil
Nil
S1007
CD
S1008
CD1
S1009
CD2
S1010
CD3
S1011
EJECT
S1012
DISC
S1013
DECK A/B
S1014
TIM/CLK
123
0.01
C1002
SW PWB (2)
ECO MODESeting
R726
( 10K )
( 10K )
Nil
Nil
Nil
Nil
Nil
NIL
( 10K )
YES
( 10K )
YES
( 10K )
YES
( 10K )
YES
( 10K )
( 10K )
( 10K )
YES
( 10K )
YES
( 10K )
YES
C1001
2
1
VERSION
FW702
VERSION
J
USA
C
CANADA
E
EUROPE
B
UK
EN
NORDIC
EE
RUSSIA
EV
EAST EUROPE
A
Austraria
US
Sigapore
UP
Korea
UX
Saudi Arabia
UY
Argentina
UW
Latin America
Taiwan
UT
UB Hong Kong
UJ US Mil
C715
R1008
680
R1001
R1002
R1003
R1004
R1005
R1006
1
2
3
4
5
6
7
8
9
10
FW701
R1017
R1018
R1019
R1020
R1021
R1022
R1023
R1024
FW702
2
1
R1025
GND1OUT2VCC
0.001
LED1001
S1001
POWER
680
S1002
TAPE
680
S1003
AUX
820
S1004
BAND
S1005
1K
CANCEL
S1006
1.5K
R1007
Note2
Note2
S1015 STOP
S1016
680
TUN -
S1017
680
TUN +
820
S1018
PRESET-
1K
S1019
PRESET+
1.5K
S1020
ROCK
2.2K
S1021
CLASSIC
2.7K
S1022
POP
5.6K
S1024
12K
ECO
3
7
R792 330
+
J/C/UX =11Pin
E=12Pin
CN701
CN703
FFC-23P
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
CN702 FFC-22P
RDS ONLY (21/22P)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
FL2
-35V
FL1
DG
SMUTE
PCNT
SPK
PRT
INH
TO POWER PWB
6
5
4
SFTY
To A-5,A-6 on page 2-7To J-6 on page 2-4
5V6
(ACSW)
FTU
MPX
AHB
EXCE
SDO
SDI
SCK
TUCE
XRST
FCD
REST
TO MAIN PWB
MOMU
MLD
SUBQ
SQCK
VCK
VDAT
STAT
BLKCK
GCTL
(RDCK)
(RDDI)
OPN
CLS
CW
CCW
CNTT
OPSW
CLSW
UPSW
DWSW
DCNT
TPSW
MCLK
MDATA
TO MAIN PWB
TPA
To I-7 on page 2-4
TPB
DETA
DETB
LVL
RECM
PBM
SW5V
(KOK)
(ECHO)
UX VERSION ONLY
C719 50V22
C718 50V22
R1039 120KR1040 120K
+
R1037 22KR1038 22K
3
2
SMUTE
PCNT
SPK
PRT
INH
SFTY
ACSW
FTU
MPX
AHB
EXCE
SDO
SDI
SCK
TUCE
XRST
FCD
REST
MOMU
MLD
SUBQ
SQCK
VCK
VDAT
STAT
BLKCK
GCTL
RDCK
RDDI
OPN
CLS
CW
CCW
CNTT
OPSW
CLSW
UPSW
DWSW
DCNT
TPSW
MCLK
MDATA
TPA
TPB
LVL
RECM
PBM
KOK
ECHO
DETA1
DETB1
Q714
Q715
KTC3199
KTC3199
C717 0.1
L707 10uH
R1047 47K
R713 47K
R715 47K
R718 47K
R1069 47K
R1070 47K
R1071 47K
R1072 47K
R1073 47K
JP701
SPK
FCD
FTU
PCNT
AHB
R726 10K
REST
C740
100P
RECM
PBM
KOK
ECHO
OPN
CLS
CW
CCW
CNTT
OPSW
CLSW
UPSW
DWSW
DCNT
TPSW
R1048 10K
RDDI
SUBQ
SQCK
SDO
SDI
SCK
R760 2.2
L702 10uH
R707 1K
R732
1K
R709 1K
R710 1KR1060 47K
R711 1K
R781 1KR783 47K
R712 1K
R714 2.2K
R716 2.2K
R717 1K
R719 1K
R720 1K
R722 1K
R724 1K
R727 1K
R728 1K
R729 1K
R730 1K
R731 1K
R733
4.7K
R734 4.7K
R1061 1K
R736 100
R737 100
R738 220
R739 220
R740 220
C702 6.3V220
R741 330
D701
1SS133
D702
1SS133
D703
1SS133
5
4
2
1
NP
P1P2P3P4P5P6P7P8P9
F1
F1
47K
RA701
RA702 47K
P3P4P5P6P7P8P9
75
P2
76
P2
77
P1
P1
78
SPK
79
FCD
80
FTU
81
PCNT
82
AHB
83
RECM
84
PBM
85
KOK
86
ECHO
87
OPN
88
CLS
89
CW
90
CCW
91
CNTT
92
MOMU
93
OPSW
94
CLSW
95
UPSW
96
DWSW
97
DCNT
98
TPSW
99
REST
100
VPP
+
C703
6.3V220
+
+
C704
6.3V220
L703 F.B
9
876
47K
RA703 47K
RA704
RA705 47K
RA706 47K
RA707 47K
1SUBQ2SQCK3SDO4SDI5SCK6SHFT7VDD8OSC29OSC110VSS11XI12XO13MMOD14VREF-15KEY116KEY217KEY318KEY419TPA20TPB21LVL22SFTY23VREF+24ACSW
Q704
2SC2668
R742 2.2K
C705
0.001
1
FL701 VACUUM FLUORESCENT DISPLAY
RDS
EON
MONO
NEWS INFO
TA
15
14
13
12
11
10
P10
P11
P12
RA708 47K
RA709 47K
RA710 47K
RA711 47K
RA712 47K
P10
P11
P12
68
P969P870P771P672P573P474P3
C701 0.1
X701
8.0MHz
C707
39P
C708
33P
C709 22P
ST
16
P13
RA713 47K
P13
C710 22P
RA714 47K
P14
IC701
MN101C35D
32.768KHz
Q705
2SC2668
PBC
PRGM
RANDOM ALL
20
19
18
17
1G2G3G4G5G6G7G
P14
P15
P16
47K
RA716
RA715 47K
RA717 47K
P15
P16
1G2G3G4G5G6G7G
61
P1662P1563P1464P1365P1266P1167P10
X702
C711
22P
C712
22P
R743 2.2K
3
2
1
SMUTE
MOMU
MPX
TUCE
DETB1
DETA1
VCK
VDAT
STAT
RDCK
INH
PRT
BLKCK
XRST
GCTL
EXCE
MCLK
MDATA
MLD
C723 50V1
R794 47K
Q701
KTC3199
R704
G9
R701
C721
150P
R1074 47K
R1075 47K
*
REPEAT
1 CD
24
23
22
21
RA718 47K
RA719 47K
RA720 47K
RA721 47K
2.2K
2.2K
R745
R746
R747 2.2K
R744 220
KEY1
KEY2
KEY3
KEY4
4.7K
R751
R750 4.7K
R749 4.7K
C706 0.001
C713 0.1
SLEEP
DAILY
REC S.MODE
26
25
2728293031
8G
RA722 47K
RA723 47K
RA724 47K
8G
2.2K
R754 2.2K
R748 2.2K
R753
R755 2.2K
R752 4.7K
TPA
TPB
LVL
kHz
G9
SFTY
10G
9G
RA725 47K
RA726 47K
G10
52
G953G854G755G656G557G458G359G260G1
R756 2.2K
A
B
11G
RA727 47K
G11
G1151G10
SMUTE
MODL
VOL+
VDAT
BLKCK
RESET
25
R1042 56K
R1041 56K
R1064 12K
R1043 47K
ACSW
12G
G12
G13
MPX
TUCE
VOL-
DETB
DETA
VCK
STAT
RDCK
INH
PRT
REM
XRST
RDDI
EXCE
EXCK
EXDO
MLD
R761 47K
R757 1K
C741
13G
C1003 0.001
BASS
32
REC
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
0.01
NP
34
F2
RA728 47K
RA729 47K
R791 100
R790 1K
R789 2.2K
R788 1K
R785 2.2K
R784
R782 2.2K
R780 2.2K
R775 1K
R778
R1065
R725
R773 2.2K
R772 2.2K
R1067
R770 2.2K
R769
R721
R723 220
R1063 220
R1062 220
R771 220
R758 2.2K
C714 0.01
C1004 0.001
35
F2
Q713
KTC3199
R759 2.2
2.2K
1K
1K
330
1K
1K
1K
R793 10K
+
MHz
9G
10K
47K
C752
C751
*
R786
R787 10K
R776 10K
R779 10K
R1066 10K
R774 1.8K
R768 100K
R1068 10K
R777 47K
Q707
DTC114YS
0.001
0.001
10K
Q702
KTC3199
G10
R705
10K
R702
47K
CONTROL PWB
Q703
10G
KTC3199
G11
R708 10K
KEY4
KEY3
KEY2
KEY1
R706
R703
10K
47K
Q712
11G
DTA114YS
L701 22uH
FW701
Q711
DTA114YS
1
2
3
4
5
6
7
8
9
10
S1023
A.BASS
C720 150P
SW PWB (1)
R1006
Nil
Nil
18K
18K 8.2K
18K 8.2K
4.7K
18K 8.2K
10K
2.2K
10K 1.5K
Nil Nil
Nil Nil
2.2K JW
2.2K
2.2K JW
2.2K JW
IC702
IR-UNIT
R1080
47
+
C716
6.3V47
red
SET
S1026
DUBBING
S1027
CD REC
S1028
REPEAT
S1029
PROGRAM
S1030
RONDOM
S1031
DISPLAY
S1032
PTY/EON
S1033
SELECT+
S1034
SELECT-
R1007
S1025
REC
R1016
Nil
Nil
8.2K
820
1.5K
JW
JW
680
R1009
680
R1010
820
R1011
1K
R1012
1.5K
R1013
2.2K
R1014
2.7K
R1015
R1016
Note2
SW101
JOG
680
R1026
680
R1027
820
R1028
1K
R1029
1.5K
R1030
2.2K
R1031
2.7K
R1032
5.6K
R1033
12K
R1034
*
C751 C752
Nil
Nil
10K
0.001
10K
0.001
10K
0.001
10K
0.001
10K
0.001
Nil
Nil
Nil
Nil
Nil
Nil
Nil
Nil
Nil
0.01
BCDEFGH I JA
2-6
Page 6
Main amp. and power supply section
MX-K3
7
6
5
4
FL2
-35V
FL1
DG
SMUTE
PCNT
SPK
PRT
INH
SFTY
To A-6 on page 2-6To J-4,J-5 on page 2-4
TO CONTROL PWBTO MAIN PWB
5V6
(ACSW)
R-OUT
A.G
L-OUT
5.6V
D.GND
MGND
B.CTL
SFTY
CDA.GND
9V
TUGND
VERSION
VERSION
J
C
CANADA
E
EUROPE
B
EN
NORDIC
EE
EV
EAST EUROPE
A
Austraria
US
Sigapore
UP
UX
Saudi Arabia
UY
Argentina
UW
Latin America
UT
Taiwan
UB Hong Kong
UJ US Mil NIL 10YES
CN901
FFC-12P
1
F2
2
-35V
3
F1
4
5
SMUTE
6
PCNT
7
SPK
8
PRT
9
INH
10
SFTY
11
12
ACSW
CN902
FW-11P
1
2
3
4
5
6
7
8
9
10
11
SUB.POWER
USA
UK
RUSIA
Korea
JP901
BOARD
NIL
NIL
YES
YES
YES
YES
YES
NIL
NIL
NIL
NIL
NIL
NIL
NIL
NIL
INHIBIT
CIRCUIT
YES
YES
NIL
NIL
NIL
NIL
NIL
YES
YES
YES
YES
YES
YES
YES
YES
CN982
**
C393
R389 10K
R390
560
C394
0.001
0.001
4
3
2
1
J303
CN101
SP-L +
SP-L -
SP-R -
SP-R +
SW
L
GND
R
FLAME GND
SPEAKER OUTPUT
To HEADPHONE
To H-1,H-2 on page 2-8
SPK
!
L391
C391
JP901
L392
NIL
1
0
0
1
1
1
*1
1
0
0
0
0
0
0
0
0
NIL
1
F.B
0
F.B
0
F.B
0
F.B
*0
F.B
0
NIL
1
NIL
1
NIL
1
NIL
1
NIL
1
NIL
1
NIL
1
NIL
1
NIL
C392
3300P
3300P
NIL
NIL
3300P
3300P
3300P
NIL
NIL
NIL
NIL
NIL
NIL
NIL
NIL
NIL
C393
C394
0.001
0.001
0.001
0.001
0.001
PCNT
C354
16V22
1SS133
R315 2.2K
RY301
12V
R386 10
KTC3199
R387 15
+
D916
+
C906
50V3300
Q338
D326
D327
1SS133
Q334 DTA114YS
Q335
PRT
6.3V220
!
C904
1SS133
DTA114YS
C390
D325 1SS133
R388 2.2K
Q339
DTC114YS
+
0.068-M
+
SMUTE
R391
2.2K
D901
TS6B02G
*
C392
3300P
C391
3300P
*
C355 25V2.2
NIL
NIL
C119
IN 2
NF 2
SUB G
PRE-VSS
OUT 2 -
OUT 2 +
VSS
VCC
OUT 1 -
OUT 1 +
BIAS
PRE-VCC
NF-1
IN-1
470P
F.B
15
14
13
12
11
10
9
8
7
6
5
4
3
N.C
2
1
C219
470P
C118 25V4.7
R118 4.7K
NIL
NIL
NIL
NIL
NIL
NIL
NIL
NIL
NIL
Q203
KTC3199
R117 2.2K
Q103
KTC3199
R218 4.7K
R217 2.2K
R119 10K
R219 10K
+
!
IC304 STK402-070
+
C218 25V4.7
L391
*
L392 F.B
*
C120
0.22-2W UNF.MF
0.22-2W UNF.MF
0.22-2W UNF.MF
0.22-2W UNF.MF
R235 10k
C220
+
R120 56KR220 56K
220P
R126
R125
R138 1K
R226
R225
R238 1K
220P
C121
50V47
R121 1.5K
R123
C123 10P
!
!
R151 15K
!
!
R251
R223 47K
C223
R221
1.5K
+
C221
50V47
47K
15K
10P
1SS133
R224
1.5K
D332 1SS133
R124
1SS133
R136 1K
Q105 KTC3199
KTC3199
Q336
R314 470K
C352 50V1
R313 470
R236 1K
C353
Q337
KTC3199
+
+
Q205
KTC3199
16V47
R234 10K
Q332
R127
L101 5uH
R128 22
R129 22
R229 22
R228 22
L201 5uH
D333
1SS133
R383 47K
150-1/4W
R150 22
KTA1268
C125
0.1-M
C126
0.1-M
R13022R230
R131 10K
R231 10K
+
C351 25V10
R134 10K
!!
R132
390-1/4W UNF.F
390-1/4W UNF.F
R133
R232
R233
!!
R137 100K
R237 100K R385 100K
Q307
KTC3199
C225
0.1-M
C226
0.1-M
22
R152 47K
22
R250
C381 0.022
D304
390-1/4W UNF.F
390-1/4W UNF.F
R384
10K
Q333
DTC114YS
R382 22K
R381 100K
Q331
KTC3200
+
C124
50V100
1.5K
Q104
D331
KTA1267
!
!
R227
C224
+
50V100
150-1/4W
Q204
R239 10K
KTA1267
R139 10K
C905
!
R901 4.7K
C911 25V4700
C915 50V22
D909 1SS133
C916 25V10
D908 MTZ6.2J
+
50V3300
+
D907
C914
C908 0.1C910 0.1
MTZ33J
0.01
+
!
C903
0.068-M
0.068-M
1N4001
1N4001
+
D906
1N4001
C912
63V47
C901
0.068-M
C907 0.1C909 0.1
!
R902 100 1/4W UNF.F
CN951
1
S1
2
S1-GND
3
S1
4
S2
5
S2
6
S3
7
S3
8
S4
9
F1
F2
S4
To SECONDARY
To A-2,A-3 or A-6 on page 2-8
!
D903
D905
+
C902
!
D902
1N4001
D904
1N4001
! !
C913
50V22
R903
2.2K
Q901
2SA934
R906 10K
R904 100
R905 100
MTZ5.6A
C918
Q904
2SB1375
2.2-1/4W UNF.F
!
R908
!
R909
47K
Q905
KTC3199
0.01
KTC3199
Q906
DTC114YS
Q903
Q902
DTC114YS
470
R912
INHIBIT CIRCUIT
1K
R907
C917
50V2.2
+
+
D910
MTZ6.2J
-35V
!
Q907 2SB1375
Q911
ACSW
3
123
4
CN982
INH
GND
BU5.6V
ACSW
INH
GND
BU5.6V
ACSW
( Not use )
INH
+
D912 MTZ12C
C921 16V100
KTC3199
Q909
DTA114YS
Q912
DTC114YS
C920 0.1
D913 MTZ11B
PCNT
25V10
C922
+
2
1
R914
1
R915
3.3K
R911
D911
22K
R910
INH
1
R916
R917 1K
Q908
KTA1267
Q910
DTC114YS
SFTY
10V100
+
R913 470
D915 MTZ6.8B
C919
1
CD/TAPE PLAY SIGNAL
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
BCDEFGH I JA
2-7
Page 7
MX-K3
MX-K3
Power transformer section Mic amp. section
7
6
5
4
3
2
To J-2,J-3
on page 2-7
To J-2,J-3
on page 2-7
US/UX/UW/UT/UB/UJ Version
!
16
15
FW951
1
2
3
4
5
6
7
8
9
F952
!
T1.6AL 250V
14
13
12
11
10
9
8
1
UP / UY Version
!
16
15
FW951
1
2
3
4
5
6
7
8
9
F952
T1.6AL 250V
14
13
!
12
11
10
9
8
T951
AC110V
5
3
7
4
T951
EI-66
6
2
EI-66
110/127/220/230-240V 50/60Hz
VOL-SEL
S999
5
3
6
8
1
7
5
6
F953
T1.25AL 250V
2
4
4
3
2
1
!
C863 50V2.2
J850
MSJ-035-10A B AG
7
F951 T 2AL 250V
!
AC127V
5
3
8
6
1
8
2
7
4
AC220V
3
1
7
5
6
8
2
4
AC-PLUG
!
AC230-240V
5
3
6
1
7
4
10K-A
MIC JACK
VR840
8
2
+
R862
R840 4.7K
C870
1K
+
10V220
Q851
2SD2144
R863 4.7K
R874 10K
R871 4.7K
C853
0.012-M
C855
10V100
C856 0.01
R873
12K
+
150P
C865
C864
R864 47
R865 27K
+
R870 4.7K
C851 50V4.7
R880 22K
R851 22K
R852 8.2K
R853
10K
150P
C867
C852
C854
0.01-M
C866 330P
50V1
C869
10V100
220V 60Hz
R855 39K
C857 100P
+
0.0047
+
5
6
7
8
R866
390
R872
220
10
11
12
13
14
15
16
IC852
BA15218F
-
VCC
R881 2.2K
9
MIXI
ADLPFI
ADLPFO
ADINTO
ADINTI
VCC
MUTE
CR
5
6
4
3
2
1
!
7
F951 T1.25AL 250V
AC-PLUG
!
Head phone amp. section
J1053
VMJ4026-001
0.001
HEAD PHONE JACK
**
C1053
C1054
L1053 F.B
L1051 47uH
L1052 47uH
0.001
0.001
C1052
C1051
0.001
To J-6
on page 2-7
FW1051
1
ROUT
2
GND
3
LOUT
4
SW
TO MAIN board
HEADPHONE PCB
G
+
+
-
D851
1SS133
R867 1.5K
IC851
BU9253FS
C871 0.047
4
3
2
1
R869 560
C876 50V1
MIXO
DALPFO
DALPFI
DAINTI
DAINTO
BIAS
ECHO VR
GND
22K
R875
C872 390P
47K
R876
Q852
2SC2785
C875 0.01
R879 4.7K
C862
0.01
+
DTA114YS
+
C874
16V10
C860 0.47-M
D852
MTZ5.1JB
R861 470
+
R878 100K
C868 50V4.7
R868 4.7M
+
8
7
6
5
C859
4
0.01-M
3
2
1
R856 82K
C873 390P
R860
15K
R859
C861 0.0033
4.7K
R858
10K
C858 16V22
R882
12K
Q853
R857 33K
1
2
3
4
5
To G-1
on page 2-4
FW852
AG
MIC
+B 9V
ECHO
DG
TO MAIN board
1
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
THIS PART IN CTL PCB
REMARK:C1053,C1054 FOR (E ) VERSION ONLY
*
BCDEFGH I JA
2-8
Page 8
Printed circuit boards
Main board
7
6
(Tray sw. board)
(Table pos. board)
5
(Disc count board)
(Pick up sw. board)
114
28
15
MX-K3
(Tur n table motor board)
4
3
41
40
21
20
2
1
60
61
80
1
(Mic Amp. board)
(Main board)
BCDEFGH I JA
2-9
Page 9
MX-K3
MX-K3
Control board
(Voltage selector board)
(Active bass ex. switch board)(Control/FL board)
7
6
5
4
3
2
1
(Head phone board)
(Key switch board)
BCDEFGH I JA
2-10
Page 10
Amp. board
7
6
5
MX-K3
4
3
2
1
BCDEA
2-3
2-11
Page 11
MX-K3
7
6
5
AC power board
4
3
2
2-4
2-12
1
BCDEA
Page 12
MEMO
MX-K3
2-5
2-13
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