Page 1
1
CD Mechanism
ABC
CD PICKUP UNIT MECHA. SWITCH
SW1~4
TRACKING
FOCUS
CN501
RF AMP
IC501
TA2109F-X
RF
TE
FE
FMO
DMO
TRO
FOO
CD SERVO CONTROL
IC521
TC9462F
SPINDLE/FEED
MOTOR
SPINDLE
FEED
LOADING MOTOR
LOADING
BTL DRIVER
IC581
LA6567H-X
BUS0~3
BUCK,CCE,RST
CD L/R
SW1~4
LM 0/1
2
3
4
5
KD-SX777
Block diagram
SYSTEM
CONTROLLER
IC701
uPD178078GF-543
CD LPF
IC111
NJM4565M
CD L/R
CHANGER
CONTROL
IC771
HD74HC126FP
CH L/R
TUL/R
FM/AM
TUNER
TU1
VOL CL
VOL DA
E.VOL
IC301
BA3860K
IC341,441
L/R -CH
LINE AMP
BA3220FV
POWER
AMP.
IC351
LA4743K
CN701
AM/FM
J1
FRONT L/R
REAR L/R
FRONT L
FRONT R
REAR L
REAR R
ENC 1,2
CN601
VOLUME JOG
EN601
REMOCON
REMOTE CONTROL
RECEIVER
IC602
RPM6938-SV4
KEY0~2
OPERATION SW.
S601~S620
LCDDA
LCDCLK
LCDCE
LCD DRIVER
IC601
LC75873NW
S1~S68 COM1~3
LCD1
QLD0163-001
Front P.C.B
Main P.C.B
J771
Changer
CN901
LINE OUT
J931
2-1
Page 2
KD-SX777
< MEMO >
2-2
Page 3
Standard schematic diagrams
Receiver & power amplifier circuit
5
4
KD-SX777
3
2
1
CD/MAIN SIGNAL
TUNER SIGNAL
AB C D E F G
2-3
Page 4
KD-SX777
KD-SX777
Main circuit
5
4
3
2
1
CD/MAIN SIGNAL
AB C D E F G
2-4
Page 5
KD-SX777
LCD driver & Operation switch circuit
5
4
3
2
1
AB C D E F G
2-5
Page 6
Printed circuit boards
5
KD-SX777
KD-SX777
Main board
(Forward side)
C1
DETOUT
M.DRIVE
C10
AM.VT
L-CH
R-CH
C371
C372
TU1
1
AM.ANT
FM.ANT
NC
B11
NC
GND
GND
FM.VT
GND
AM.VCC
GND
OSC
R1
FM.VCC
13
GND
GND
NC
SNC
26
S701
R372
R202
SD/ST
J931
R471
R731
R775
R724
R734
R735
R776
VPP
R778
R732
R757
C711
R722
J771
LM0
LM1
R764
R713
R712
R711
R710
R716
R720
R779
C714
S703
R371
R472
R376
R476
D2
L1
R45
C44
C7
C6
C4
C102
R102
C205
R201
C202
B6
SM
B3
C2
VDD
VSS
C103
C203
C707
C708
D1
R772
R375
C15
C31
D3
C105
B4
C33
D31
Q41
R35
R101
L701
B2
R725
R726
X701
R773
R774
R782
R781
CM701
GEB10008A
R729
B704
R475
R34
C16
Q42
Q32
R8
R4
R7
L702
RESET
C709
X1
C706
C705
R33
R43
R42
C34
R5
D4
C713
C18
4
J2
J1
B10
Q1
C43
3
C5
C8
VCC
14
SEEK/STOP
R2
C11
R9
Q2
C9
VCC
2
Main board
(Reverse side)
R760
R762
R704
R709
C322
D709
R707
C977
C301
D708
R706
B23
C324
B961
D976
D324
C321
D707
B962
R965
C967
R405
R305
R403
R761
B21
D706
C975
R718
C771
Q976
C401
R685
D712
R767
C962
C915
D977
R765
C772
R686
C411
C311
R766
R768
C403
D711
D705
C965
R737
C402
D964
C914
R914
C331
C309
C953
C115
C111
R571
DIMMER
L961
CN901
D960
R962
R963
C961
C343
D952
C444
C573
C554
C521
C344
C443
D581
D582
C581
KEY1
R444
R445
R443
R324
KEY2
R343
C445
C523
R424
R442
R342
13
26
LCDCL
R583
C345
C574
X521
C522
R964
R423
C447
R447
C446
R446
R441
C441
C442
C347
R341
R347
C346
R323
R345
C342
FE-
FE+
SM-
SM+
LO+
R.SW
C582
R582
R581
R584
C558
C555
C551
ENC1
ENC2
LCDCE
LCDDA
C352
R354
C351
R353
R352
R351
R452
R454
R346
R451
C341
D351
C505
LO-
GND
SW2
Q581
C583
C524
L521
R531
R541
R547
R545
R5V
10V
SW3
SW1
C510
C507
REMOCON
CN701
1
C506
R533
SW4
C526
C452
C451
R453
C362
1
C504
14
CN501
LD
C502
R512
R511
RF
VREF
C503
FE
C533
R532
R534
R537
R542
R543
R544
BZ871
R961
R332
C348
C332
R331
R344
C310
D951
R957
R112
R113
R116
B22
R117
C571
C560
L551
NC
NC
KEY0
IC961
D962
Q891
R301
D302
R216
D301
R212
C215
C307
D701
C407
R213
R217
C302
C303
R967
R431
D961
R215
C211
C912
C699
D710
R951
C406
C306
D963
C964
C911
R432
C409
B310
C410
C423
C323
R956
C951
C954
R115
GND
R966
C963
C969
C968
Q963
C971
C976
C431 C432
R303
R401
C116
T1A
PL701
D704
D703
D702
R871
Q871
C361
R502
C538
C358
TR-
R507
R501
R509
C981
TR+
C544
FO+
R506
C532
CM702
C960
C359
C356
C982
C983
C984
C355
C357
VFVBVAVEVC
VREF
VCC
GND
FO-
R503
R504
R505
C512
R508
C514
C501
Q501
TE
C535
C531
C871
S702
C873
C872
C710
1
AB C D E F G
2-6
Page 7
Front board (Forward side)
KD-SX777
6
D601
R606
B601
D602
B602
D603
D604
R607
B603
R650
S614
D613
S607
5
D624
S608
EN601
D612
D611
IC602
S605
D618
S615
D617
S609
D616
D605
S616
R614
S617
D606
R615
D607
S618 S619
R616
R617
D608
S620
D609
D619
D610
S610
S601
D641
D642
D643
LCD1
D620
S611
D621
S604
S602
D628
D614
D615
D629
S613
R605
R604
S1B
D623
D622
S606
S603
4
Front board (Reverse side)
3
IC602
R624
R625
R623
R651R652
R628
R620
R630
R627
1
R626
D657
R658
R657
R608
R622
R621
B604
Q641
R644
R646
R645
Q642
R603
R669
D656
D659
D658
D654
2
D653
R602
D652
R601
D655
D641
R611
R629
R643
D642
D643
C601
R642
C602
R609
R655
R641
R671
C603
R656
61
C604
C605
R670
80
1
T1A
GEB10013A
60
41
IC601
40
21
20
15
CN601
R663
R662
R661
R654
R653
D651
C606
R613
R612
1
ABCDE
2-7
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