Technics SL-PC25

Sy Bd O40)
jet [ian | Paton
Division
e 10102 (AN8374S): Servo processor
Phase difference input (A)
Phase difference input (B)
Tracking offset adjustment
Vo
Division
LSA Power supply (+5 V input)
PCNT Track crossing speed control output
output (Not used, open)
TRV
F )
. ) .
LSB
4
le
m
EOFS
Selector output (track crossing
state)
Traverse servo control output
Tracking gain adjustment
Tracking error signal output
Tracking error gain detecting filter
(Not used, open)
TEG
Pe
Pa
cay
i
Par [oc [0 [Hats
Ne
fe [vor [3 are
Pe an
pe [er [+
[one [a
ee [om
pea
Pe
Pe
Gl
4
ae
E OUT
E BPF
FEG Focus gain adjustment
Focus error signal output
ceaie
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 (Backward) command)
Traverse forward command signa!
35 TRVR Po | Traverse backward command signal
36 RFOET a RF detection signal input
37 | soo | 1 | Dropout detection input
[ae [vee [1 [ovr 8 nt
Traverse position detecting
resistor/capacitor inputs
riangular wave oscillator
capacitor output
Reference voltage input
RF signal input
REF
>| <
D nT
=
3 CDSL
Data slice filter capacitor input
Frequency difference signal input
FPC
GND
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
Cc. PLL
vss
CLK
SRF
N o
v
ie) RK
Tracking drive control output
LS)
—
oO ~ =
Tracking error signal input
¢ 1C103 (AN3877N): BTL drive
1/0
Division
Driver power supply
(+7.7V input)
Power supply (+7.7V input)
VO
Division
Inverting output of tracking
TD— ;
driver
Non-inverting output of
ee ee
FD— | oo | Inverting output of focus driver
FD+ Non-inverting output of
focus driver
Ce
[| reser | 0 |
a
<
[o) (o)
External transistor base
driving output
Voltage (+ 4.9V) output
Traverse error signal input
Focus error signa! input
Tracking error signal input
Reference voltage input
3
inverting
output
of
traverse
driver
Non-inverting
output
of
traverse
driver
Reset
signal
output
PC
input
(connect
to
GND.)
TDI
< B) m n
—~aA1—