Technics SL-P250 - Page 41

@
TERMINAL
FUNCTION
OF
ICs
e 1C101 (AN8373S): Servo amp.
ee
2 [rose [1 [ra ren |
1/0
Division
¥ie)
Division
nN NO
Photo detector current input (A1)
PD balance adjustment
>
N ~
Ny {o)
ws =
LD
sl
call
al
Par fo
Tree [or
Tee
ee [a
ay
es
cal
|
ia
ciel
w Oo
Tracking balance adjustment
Focus offset adjustment
Current/voltage conversion
output (A)
Current/voltage conversion
output (B)
Focus gain adjustment output
Focus error signal input
Tracking error signal input
Ww
nN
w wo
FOOFS
[|
pe [em
C. TPH
| 20 | c. FPL
C. FPH
w
©
Tracking error filter capacitor
input
Focus error filter capacitor input
nN
(Not used, connected to GND)
Focus/tracking down signal input
e 10102 (AN8374S): Servo processor
Tracking offset adjustment
L
R
1/0
Division
D
SPCNT
Vv
vD
TR
Tracking gain adjustment
Tracking error signal output
Tracking error gain detecting filter
(Not used, open)
B
Focus error signal output
Triangular wave oscillator
capacitor output
VREF Reference voltage input
RF signal input
Data slice filter capacitor input
F
Frequency difference signal input
a
9
an
rc
TRVR
RFDET
<
PLL loop filter constant
Frequency pull-in clock signal
(88.2 kHz) input
Sliced and digitized RF signal
output
Clock output extracted from SRF
EFM signal output synchronous
with PCK
'
Focus gain adjustment
F
G
G
WwW
Cc
S
K
K
21 EFM
= N ~ N
VO
Division
SL-P250
Power supply (+5 V input)
output (Not used, open)
Selector output (track crossing
state)
Traverse servo control output
Focus tock signal output
Track kick signal output
Laser power control output
Focus/tracking gain up output
(Not used, open
Control input (FOON : Focus
servo ON signal)
Control input (TRON : Tracking
servo ON signal
Control input (KICKF : Kick
direction (forward) command)
Control input (KICKR : Kick
direction (reverse) command)
Traverse forwardcormmmand signal
Traverse backwaid command signal
RF detection signal input
Dropout detection input
input)
+ ba}
Py
aQ 5g a = °
a a
=]
aQ
= a 8
is]
o a
° ° S ot
x
Q
° € ot
ao}
c
ot
Power supply (+5 V
Traverse position detecting
resistor/capacitor inputs
Tracking drive control output
Tracking error siinat: input