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Main 1/6 Schematic Diagram
1-10-51
MODE: SP/REC
1
2
3
PLAY MODE
5.0
~
5.0
REC MODE
(2.5)
INDICATES THAT THE VOLTAGE
THE SAME VOLTAGE FOR
IS NOT CONSISTENT HERE.
BOTH PLAY & REC MODES.
"
" = SMD
1-10-52
Comparison Chart of Models and Marks
IC501 KEY VOLTAGE CHART
MODEL
MARK
MODEL
MARK
VR530/58
W
VR830/58
AB
0.00 ~ 0.51V
VR630/58
X
VRQ45/16
AC
0.51 ~ 0.92V
VR330/58
Y
VRQ45/39
AD
0.92 ~ 1.27V
1.27 ~ 1.61V
VR730/58
Z
VRQ45/58
AE
1.61 ~ 1.98V
VR732/58
AA
1.98 ~ 2.39V
2.39 ~ 2.90V
2.90 ~ 3.60V
3.60 ~ 4.30V
4.30 ~ 5.00V
KEY 1 (7PIN)
KEY 2 (8 PIN)
KEY 2 (8 PIN)
(W,X,Y,Z,AA,AB)
(AC,AD,AE)
POWER
-----------------------
-----------------------
-----------------------
REW
REW
CLEAR
PLAY
PLAY
EJECT
FF
FF
CH DOWN
PAUSE
-----------------------
S-INH
-----------------------
-----------------------
-----------------------
STOP/EJECT
STOP/EJECT
-----------------------
-----------------------
-----------------------
-----------------------
-----------------------
-----------------------
KEY OFF
KEY OFF
KEY OFF
MAIN 1/6 Schematic Diagram Parts Location Guide
Ref No.
Position
Ref No.
Position
CAPACITORS
RESISTORS
C501
B-1
R511
E-2
C502
B-1
R513
F-2
C506
D-1
R514
F-2
C508
E-2
R516
E-2
C510
E-2
R517
E-2
C511
E-2
R518
F-3
C512
E-2
R519
F-3
C513
E-2
R520
F-4
C514
E-2
R521
F-4
C515
E-2
R522
E-4
C516
E-2
R523
C-4
C517
F-4
R524
B-4
C518
F-5
R525
B-3
C519
C-3
R526
B-2
C520
B-3
R527
B-2
C521
B-2
R528
C-1
C522
B-2
R529
A-1
C523
B-2
R530
A-3
C524
B-2
R531
A-3
C526
B-2
R533
B-3
C527
B-2
R534
A-2
C529
B-2
R535
A-2
C530
B-2
R536
A-2
C531
C-1
R537
A-2
C535
B-3
R538
B-2
C538
B-1
R539
B-2
C540
D-4
R540
B-2
C541
C-4
R541
B-1
C542
B-4
R542
A-3
C561
C-4
R543
A-3
C621
E-5
R544
A-3
C622
E-4
R545
A-2
C631
A-4
R546
A-2
C632
A-4
R547
A-3
C851
E-3
R551
E-3
C852
E-3
R552
E-3
C853
E-3
R555
C-1
C854
E-3
R556
C-1
C855
E-3
R557
C-1
C856
E-3
R558
C-1
C858
E-3
R566
D-5
C859
D-4
R601
D-1
C862
E-3
R603
E-2
CONNECTORS
R604
E-2
CL501
F-4
R605
D-4
CL502
F-5
R606
D-4
CL504
F-5
R607
E-4
CL505
A-2
R608
E-4
CL508
A-3
R609
D-1
CL509
A-3
R610
D-1
CN506
A-2
R612
D-1
DIODES
R613
D-1
D501
E-4
R614
D-1
D502
A-1
R615
D-1
D552
E-3
R616
D-1
D553
E-2
R617
D-1
D621
E-5
R618
D-1
D631
A-4
R621
E-5
D632
A-4
R622
E-5
D633
A-4
R623
E-5
D634
A-4
R624
E-4
R625
E-4
ICS
IC501
C-3
R631
A-4
IC503
A-5
R632
A-4
IC561
D-5
R633
A-4
COILS
R634
A-4
L501
B-1
R851
E-3
L561
B-4
R852
E-3
L562
C-4
R853
E-3
L851
E-3
SWITCHES
L853
D-4
SW501
A-3
TRANSISTORS
SW502
A-3
Q501
E-2
SW504
A-3
Q502
B-2
SW505
A-2
Q503
A-3
SW506
E-1
Q504
A-2
SW507
A-2
Q505
A-1
VARIABLE RESISTORS
Q551
E-3
VR501
B-1
Q552
E-2
CRYSTAL OSCILLATORS
Q621
E-5
X501
E-2
Q631
A-4
X502
E-2
RESISTORS
MISCELLANEOUS
R501
C-1
FP562
B-5
R502
C-1
JK631
A-4
R503
C-1
PS503
B-3
R504
C-1
RS501
B-2
R505
C-1
TEST POINTS
R506
C-1
TP501
B-2
R507
C-1
TP502
D-1
R508
D-1
TP506
B-2
R509
E-1
TP507
A-2
R510
E-2
TP508
D-1
1-10-53
HC464SCM1
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