Technics SL-PJ27 - Page 17

SL-PJ27
e 10102 (AN8374S): Servo processor
Traverse position detecting
resistor/capacitor inputs
fia] rec fot Frequency difference signal input
Fe
| 16 | C. PLL Pie PLL loop filter constant
a
CLK Frequency pull-in clock signal
(88.2 kHz) input
Sliced and digitized RF signal
Fa a De
fo [ree fe
Clock output extracted from SRF
Vo 1/0
Division Division
Pf [renaonnmmmea [fe [v0 [+ [roam
z ; Track crossing speed control output
i ll BC Ee
ae ps [tev [0 [ramirnesnae |
Tracking gain adjustment
Pf | [ae | FeBER [0 [Forth
Ee TE OUT ae Tracking error signa! output KICK za Track kick signal output
Tracking error gain detecting filter
TE BPF nae (Not used, open) 28 LDON Laser power control output
: : Focus/tracking gain up output
eT
vee
[+
[rermasiones
ifm
|
veer
|
0
_|
Bartana
FE OUT Focus error signal output 30 CNT1 Control input (FOON: Focus
Servo On signal)
riangular wave oscillator Control input (TRON: Tracking
fiof cw | o | capacitor output ae sled Servo On signal)
. Control input (KICKF: Kick
fd VREF a Reference voltage input CNT3 a Direction (Forward) command)
: : Control input (KICKR: KICK
ie ARF is te RF signal input CNT4 Hl afi Direction (Backward) command)
CDSL sy Data slice filter capacitor input TRVF eae 23 Traverse forward command signal
Tracking drive control output
EFM signal output synchronous
with
PCK
Tracking
error
signal
input
¢ 1C103 (AN3877N): BTL drive
VO
Division
Ea PVCC ae Drive power supply
2 vcc pete Power supply
TB External transistor base
driving output
VMON i. et Voltage output
VO
Division
Inverting output of tracking
driver
Non-inverting output of
tracking driver
OL +] Inverting output of focus driver
Non-inverting output of
focus driver
Inverting output of traverse
driver
Non-inverting output of
traverse driver
TO-
TD+
FO-
FO+
ce
fe | ro | Focus error signal input
Tracking error signal input
Reference voltage input
; |
4
6
Reset signal output
PC input (connect to GND.)
re [er