E3 :With Sw Tuner E Model 7-10. Schematic Diagram - Main Section - Sony HCD-D90AV Service Manual

Pin No. Pin Name
34 RF M
35 RFTC
36 LD
37 PD
38 PD1
39 PD2
40 FE BIAS
F
41
42 E
43 EI
44 V
EE
45 TEO
LPFI
46
47 TEI
ATSC
48
49 TZC
50 TDFCT
51 VC
FZC
52
APC : Auto Power Control
I/O
RF summing amplifier inverted input
The RF amplifier gain is determined by the resistance connected between this pin and
I
RFO pin
External time constant setting pin during RF level control
I
APC amplifier output
O
I APC amplifier input
I RF I-V amplifier inverted input
Connect these pins to the photo diode A+C and B+D pins
I
Bias adjustment of focus error amplifier
I
Leave this pin open for automatic adjustment
F I-V and E I-V amplifier inverted input
I
Connect these pins to photo diodes F and E
I
I-V amplifier E gain adjustment
–
(When not using automatic balance adjustment)
Negative power supply
–
Tracking error amplifier output
O
E-F signal is output
Comparator input for balance adjustment
I
(Input from TEO through LPF)
I Tracking error input
I Window comparator input for ATSC detection
Trackig zero-cross comparator input
I
I Capacitor connection pin for defect time constant
O (V + V )/2 direct voltage output
CC EE
Focus zero-cross comparator input
I
— 83 —
Function