1-10-51
1-10-52
1-10-53
HC480SCM1
Main 1/6 Schematic Diagram
THE SAME VOLTAGE FOR
BOTH PLAY & REC MODES.
INDICATES THAT THE VOLTAGE
IS NOT CONSISTENT HERE.
MODE:
SP/REC
PLAY MODE
REC MODE
1
2
3
5.0
5.0
(2.5)
~
“ “ = SMD
R612
D-1
D501
E-4
R621
D-4
D502
A-1
R622
D-4
D552
E-3
R623
E-4
D553
E-2
R624
E-4
D621
E-4
R625
E-4
R851
E-3
IC501
C-2
R852
E-3
IC503
B-3
R853
E-3
IC561
D-5
SW501
A-3
L501
B-1
SW502
A-3
L561
B-4
SW504
A-3
L562
B-4
SW505
A-2
L851
E-3
SW506
E-1
L853
D-4
SW507
A-2
Q501
E-2
VR501
B-1
Q502
B-2
Q503
A-3
X501
E-2
Q551
E-3
X502
E-2
Q552
E-2
Q621
E-4
FP562
B-5
PS503
B-3
C622
B-3
RS501
B-2
R501
C-1
R502
C-1
TP501
B-2
R503
C-1
TP502
D-1
R504
C-1
TP506
B-2
R505
C-1
TP507
A-2
R506
C-1
TP508
D-1
R507
C-1
ICS
DIODES
TEST POINTS
VARIABLE RESISTORS
CRYSTAL OSCILLATORS
TRANSISTORS
RESISTORS
MISCELLANEOUS
COILS
SWITCHES
MAIN 1/6 Schematic Diagram Parts Location Guide
Ref No.
Position
Ref No.
Position
C501
B-1
R508
D-1
C502
B-1
R509
E-1
C506
D-1
R510
E-2
C508
E-2
R511
E-2
C510
F-2
R513
F-2
C511
E-2
R514
F-2
C512
E-2
R516
E-2
C513
E-2
R517
E-2
C514
E-2
R518
F-3
C515
E-2
R519
F-3
C516
E-2
R520
E-4
C517
E-4
R521
E-4
C518
F-4
R522
E-4
C519
C-3
R523
C-4
C520
B-3
R524
B-4
C521
B-2
R525
B-3
C522
B-2
R526
B-2
C523
B-2
R527
B-2
C524
B-2
R528
C-1
C526
B-2
R529
A-1
C527
B-2
R530
A-3
C529
B-2
R531
A-3
C530
B-2
R533
B-3
C531
C-1
R534
A-2
C535
B-3
R535
A-2
C540
D-4
R536
A-2
C561
C-4
R537
A-2
C621
D-4
R538
B-2
C622
B-3
R539
B-2
C851
E-3
R540
B-2
C852
E-3
R541
B-1
C853
E-3
R542
A-3
C854
E-3
R543
A-3
C855
E-3
R544
A-3
C856
E-3
R545
A-2
C858
E-3
R546
A-2
C859
D-4
R547
A-3
C862
E-3
R551
E-3
R552
E-3
CL501
F-4
R555
C-1
CL502
F-5
R556
C-1
CL504
F-5
R557
C-1
CL508
A-3
R558
C-1
CL509
A-3
R566
D-5
CN506
A-2
R603
E-2
CONNECTORS
RESISTORS
CAPACITORS
Comparison Chart of Models and Marks
MODEL
MARK
MODEL
MARK
VR830/02
S
VR830/16
U
VR830/07
T
VR830/39
V
IC501 KEY VOLTAGE CHART
KEY 1 (7PIN)
KEY 2 (8 PIN)
0.00 ~ 0.51V
POWER
CH UP
0.51 ~ 0.92V
---------------------
REW
0.92 ~ 1.27V
CLEAR
PLAY
1.27 ~ 1.61V
REC/OTR
FF
1.61 ~ 1.98V
CH DOWN
PAUSE
1.98 ~ 2.39V
S-INH
---------------------
2.39 ~ 2.90V
---------------------
STOP/EJECT
2.90 ~ 3.60V
---------------------
---------------------
3.60 ~ 4.30V
---------------------
---------------------
4.30 ~ 5.00V
KEY OFF
KEY OFF