Technics SL-P2000 - IC TERMINAL FUNCTIONS; Key IC Pinouts

SL-P2000
M@ TERMINAL FUNCTION OF IC’S
* 1C101 (AN8800SCE2): Servo amp
ite) vo ;
Division Division
Ea LDG Ee | APC loop gain select 22 | PLAY Ex Play signal (‘‘H": ON, “L": OFF)
2 LDP APC monitor PD polarity select 23 WVEL pouae velocity (H": double,
(Not used, open) L”: single)
Tracking error shunt (“H”:
LO Laser power auto control output 26 | TES eS shunt, “L”: output)
LPD LD power monitor PD signal PTO ea Potentio amp output
5 | ee = fevotemnt | EB “ ex one ene ats
LOON LD APC ONIORE CH ON Os 27 PBO Potentio buffer output
OFF)
7 AMP | aed PO Eat Potentio buffer input
RF signal (X30 amp)
AMP O Le ROSS Tracking error zero cross output
TE Tracking error signal
TE BAL Oscillation det. signal
22 | TBAL Ex Tracking balance adj. input
Oscillation det. signal (“H”: det.)
34
Focusing error signal
RF AGC signal input
AGC detection capacitor input
oO
+
1
_
. AGC
—
o
RF signal output
Dropout detection capacitor
Cc. SBDO :
input
RF detection signal (“L”:
detecting)
14 AF DET Focusing balance 2
Focusing balance 1
ae Power supply terminal
Photo detector Bch input with
delay
Photo detector Ach input
without delay
PDB Photo detector Ach inpu t with
delay
Photo detector Bch inpy t
without delay
AR
D B Dropout detection output
po | Power supply terminal
F
le)
Vee
Dropout detection pulse output
Power supply terminal for A/D
converter (+)
VREF Reference voltage output
Power supply terminal! for A/D
VAD—
converter (—)
OFTR eral Off track detection (“H”: det.)
VAD +
21
_ _
~“ on