Circuit Descriptions
5-6
Samsung Electronics
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 adjust-
ing 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
Summary of Contents for DVD-611
Page 29: ...Reference Information 2 22 Samsung Electronics MEMO ...
Page 31: ...Product Specification 3 2 Samsung Electronics MEMO ...
Page 45: ...4 14 Samsung Electronics Disassembly and Reaasembly MEMO ...
Page 65: ...Circuit Descriptions 5 20 Samsung Electronics MEMO ...
Page 75: ...Troubleshooting 6 10 Samsung Electronics MEMO ...
Page 83: ...Exploded Views and Parts List 7 8 Samsung Electronics MEMO ...
Page 95: ...Block Diagram 9 2 Samsung Electronics MEMO ...
Page 97: ...PCB Diagrams 10 2 Samsung Electronics 10 1 Main COMPONENT SIDE SOLDER SIDE ...
Page 98: ...PCB Diagrams Samsung Electronics 10 3 10 2 Jack ...
Page 100: ...Samsung Electronics 11 1 11 Wiring Diagram ...
Page 101: ...Wiring Diagram 11 2 Samsung Electronics MEMO ...
Page 103: ...Schematic Diagrams 12 2 Samsung Electronics 12 1 Power ...
Page 104: ...Schematic Diagrams Samsung Electronics 12 3 12 2 Main Micom ...
Page 105: ...Schematic Diagrams 12 4 Samsung Electronics 12 3 Servo ...
Page 106: ...Schematic Diagrams Samsung Electronics 12 5 12 4 Video ...
Page 107: ...Schematic Diagrams 12 6 Samsung Electronics 12 5 Audio ...
Page 108: ...Schematic Diagrams Samsung Electronics 12 7 12 6 RF ...
Page 109: ...Schematic Diagrams 12 8 Samsung Electronics 12 7 ZiVA A V Decoder ...
Page 110: ...Schematic Diagrams Samsung Electronics 12 9 12 8 DSP ...
Page 111: ...Schematic Diagrams 12 10 Samsung Electronics 12 9 Front Micom VFD Display ...
Page 112: ...Schematic Diagrams Samsung Electronics 12 11 12 10 Key ...
Page 113: ...Schematic Diagrams 12 12 Samsung Electronics 1 LD DVD 511 12 11 Deck 2 LD DVD 611 611B 615 ...
Page 114: ...Schematic Diagrams Samsung Electronics 12 13 12 12 Remote Control ...
Page 115: ...Schematic Diagrams 12 14 Samsung Electronics MEMO ...