Panasonic SA-AK22 Service Manual page 38

13. Illustration of IC's, Transistors and Diodes
14. Terminal Function of IC's
14.1. IC701 (AN8885SBE1) Servo Amplifier
Pin No. Mark I/O
1 PDE I
2 PDF I
3 VCC I
4 PDA I
5 PDB I
6 LPD I
7 LD O
8 RF O
9 RFIN I
10 CSBRT I
11 CEA I
12 BDO O
13 LDON I
14 GND —
15 /RFDET O
16 PDOWN O
17 OFTR O
18 NC O
19 ENV O
20 NC I
21 NC I
22 TEN I
23 TEOUT O
24 FEOUT O
25 FEN I
26 VREF O
27 TBAL I
28 FBAL I
14.2. IC702 (MN662790RSC) Servo processor/ Digital signal
processor/ Digital filter/ D/A converter
Function
Tracking signal input 1
Tracking signal input 2
Power supply
Focus signal input
terminal 1
Focus signal input
terminal 2
APC amp input
APC amp output
RFsumming output
Detector's input
Capacitor for OFTR
connection
Capacitor for HPF amp
connection
BDO output ("H" : drop
out)
APC control
Ground
NRFDET output ("L" :
detection)
Power-down input
OFTR output
N.C.
3T-ENV output
N.C.
N.C.
TE amp input
TE amp output
FE amp output
FE amp input
Reference voltage output
Tracking balance control
Focus balance control