Samsung SV-DVD50 Service Manual page 147

7-13 DVD RF
(1) RIC1 (S5L1463)
S5L1463 is combined with S5L1455 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, Laser Power Control,
etc.
(a) Basic Potentiometer
S5L1463 Uses 5V/3.3V and reference voltage is 2.5V.
V (Pin 19, 32, 45, 49, 58-) terminal is needed for IC, which uses the peripheral V.
(b) RF signal
Fig. 7-42 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.
PICK-UP
PDCD LDCD PDDVD LDDVD F
Fig. 7-43 shows the waveform-equalizing block diagram for the RF signal.
It outputs to EQout (Pin 70) terminal by initially changing switching AMP gain of DVD and CD, and then adjust-
ing the level in RF SUM & AGC.
RF SUM and AGC is Contvolled by PWM Signal and pin 78~80.
EQout Pin is Connected EQin.
104
#
A
104
$
B
104
C %
104
@
D
E
6
7
A
)
B
1
C
2
D
3
LDDVD
9
PDDVD
0
LDCD
"
PDCD
'
RFAGCO
z
RE SUM
& AGC
DPD
TE
TE
GCA
GCA
ALPC
Fig. 7-42
Circuit Operating Descriptions
104
105
EQIN MIRRI
Z L
MIRR
RF EQ
TESEL
Mux
ENV
FOK
DEFECT
[
MIRR
'
RFEQO
q
TE
ABCDI
e
103
E
ABCD
r
ENV
Y
FOKB
o
PLLDFT
O
DFCT1
=
FE
7-45