Aiwa RC-AAT20, Руководство по обслуживанию

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34 RFM I
Anti-reverse input terminal for RF summing amplifier. The gain of RF amplifier is decided by the
connection resistance between RF-M and RF-O terminals.
35 RFTC I This is a pin where the selection time constant is externally connected to control the RF level.
36 LD O APC amplifier output terminal.
37 PD I APC amplifier input terminal.
38 ~ 39 PD1 ~ PD2 I
RFI-V amplifier inverted input pin. These pins are connected to the A+C and B+C pins of the
optical pickup, receiving by currents input.
40 FEBIAS I/O Bias adjustment pin of the focus error amplifier. (Not used)
41 ~ 42 F ~ E I
F and EIV amplifier inverted input pins. These pins are connected to the F and E of the optical
pickup, receiving by current input.
43 EI –
Gain adjustment pin of the I-V amplifier E. (When not in use of BAL automatic adjustment)
(Not used)
44 VEE – GND connection pin.
45 TEO O Output terminal for tacking-error amplifier. Output E-F signal.
46 LPFI I BAL adjustment comparator input pin. (Input through LPF from TEO)
47 TEI I Input terminal for tracking error.
48 ATSC I Window-comparator input terminal for detecting ATSC.
49 TZC I Input terminal for tracking-zero cross comparator.
50 TDFCT I Capacitor connection pin for the time constant used when there is defect.
51 VC O Output terminal for DC voltage reduced to half of VCC+VEE.
52 FZC I Input terminal for focus-zero cross comparator.
Pin No. Pin Name I/O Description