Circuit Descriptions
5-6
5-2 RF
5-2-1 RIC1 (KS1461)
KS1461 is combined with KS1452 and KS1453 as bipolar IC developed for DVD SERVO system.
Main features include DVD waveform equalizing, CD waveform equalizing, focus error signal generation, 3-beam
tracking error signal generation, DPD 1-beam tracking error, defect, envelope, MIRR output, etc. after receiving the
pick-up output converted into I/V.
5-2-1 (a) Basic Potentiometer
KS1461 uses a single power method and each circuit is based on V of 2.5V.
V (Pin 12, 20, 24, 67) terminal is needed for IC, which uses the peripheral V.
5-2-1(b) RF signal
Fig. 5-11 shows the flow of signal generated by the pick-up.
A, B, C, D signals detected from pick-up are converted in to RF signal(A+B+C+D) via RF summing AMP.
Fig. 5-12 shows the waveform-equalizing block diagram for the RF signal.
It outputs to EQout (Pin 86) terminal by initially changing switching AMP gain of DVD and CD, and then
adjusting the level in RF SUM & AGC. It controls RF SUM & AGC gain by means of Pin 89-95 and interfaces with
PWM signal, (output from PWM terminal of KS1453, via low-pass filter to adjust boost gain and peak frequency.
PICK-UP
RE SUM
& AGC
RF EG
DPD
TE
Mhx
ENV
FOK
DEFECT
TESEL
TE
ABCD
SUM
FE
ALPC
MIRR
%
^
&
*
5
6
7
8
3
4
104
104
104
104
?
.
m
474
104
RFAGCO
EQIN
MIRRI
G
,
y
I
i
T
F
P
[
d
MIRR
TE
RFEQO
A
B
C
D
E
F
LD
PD
w
E
ABCD
FE
DFCT1
DFCT2
FOKB
ENV
103
ABCDI
Fig. 5-11
Содержание DVC-605U
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Страница 92: ...7 1 7 Exploded View 7 1 Cabinet Assembly 7 2 Deck Assembly Page 7 2 7 3 ...
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Страница 95: ...Exploded Views 7 4 MEMO ...
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Страница 99: ...Block Diagram 9 2 MEMO ...
Страница 101: ...PCB Diagrams 10 2 10 1 S M P S ...
Страница 102: ...PCB Diagrams 10 3 10 2 Main COMPONENT SIDE SOLDER SIDE ...
Страница 103: ...PCB Diagrams 10 4 10 3 Jack ...
Страница 104: ...PCB Diagrams 10 5 10 4 Front COMPONENT SIDE SOLDER SIDE ...
Страница 105: ...PCB Diagrams 10 6 10 5 Key COMPONENT SIDE SOLDER SIDE ...
Страница 106: ...PCB Diagrams 10 7 10 6 Deck 10 8 Sensor 10 7 Motor 10 9 Switch ...
Страница 107: ...PCB Diagrams 10 8 MEMO ...
Страница 108: ...11 1 11 Wiring Diagram ...
Страница 109: ...Wiring Diagram 11 2 MEMO ...
Страница 111: ...Schematic Diagrams 12 2 12 1 S M P S ...
Страница 112: ...Schematic Diagrams 12 3 12 2 Main Micom ...
Страница 113: ...Schematic Diagrams 12 4 12 3 Servo ...
Страница 114: ...Schematic Diagrams 12 5 12 4 RF ...
Страница 115: ...Schematic Diagrams 12 6 12 5 Data Processor ...
Страница 116: ...Schematic Diagrams 12 7 12 6 AV Decoder ...
Страница 117: ...Schematic Diagrams 12 8 12 7 Video ...
Страница 118: ...Schematic Diagrams 12 9 12 8 Audio ...
Страница 119: ...Schematic Diagrams 12 10 12 9 Audio 5 1 Channel ...
Страница 120: ...Schematic Diagrams 12 11 12 10 AV Interface ...
Страница 121: ...Schematic Diagrams 12 12 12 11 Front Micom ...
Страница 122: ...Schematic Diagrams 12 13 12 12 Key ...
Страница 123: ...Schematic Diagrams 12 14 12 13 Deck ...
Страница 124: ...Schematic Diagrams 12 15 12 14 Motor Switch Sensor ...
Страница 125: ...Schematic Diagrams 12 16 12 15 Remote Control ...