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Pin No. 32 33
Pin Name LF I LF O
IJo I
Description Input terminal by capacity combination of RF summing amplifier. Output terminal of RF summing amplifier. Check point of Eye pattern. Anti-reverse input terminal for RF summing amplifier.
0
I
34
I
LF M
I
I
The gain of RF amplifier is decided by the connection resistance between RF-M and RFO terminals.
35 36 37
38,39
LIWC LD PD PD1, PD2
I o I
This is a pin where the selection time constant is externally connected to control the RF level. APC amplifier output terminal. APC amplifier input terminal. RFI-V amplifier inverted input pin.
I
I I I Theseare connected to the A+C and B+D pins of the optical pickup, receiving by pins
currents input.
1/0
40
FE(NC)
Bias adjustment pin of the focus error amplifier. (Not used.) F and EIV amplifier inverted input pins.
41,42
F, E
I
These pins are connected to the F and E pins of the optical pickup, receiving by current I input. Gain adjustment pin of the I-V amplifier E. (When not in use of BAL automatic adjustment).
I
I
EI(NC) �
I
43
GND connection pin. Output terminal for tracking-error amplifier. Output E-F signal. BAL adjustment comparator input pin. (Input through LPF from TEO) 47 48 49
50 51
I
TEI ATSC
I I
I I
I I
Input terminal fortracking error. Whdow-comparator input terminal for detecting ATSC. Inputterminalfortracking-zerocrosscomparator. Capacitor connection pin forthetimc constant used when there is defect. Voltage center of DC voltage reduced to half between VCC and VEE. Input terminal for focus-zero cross comparator.
I
I
I
Tzc
TDFCT
Vc
III
I I
o
I
52
F�Zc
I
�21�
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