Sony MZ-R900 Service Manual - Page 35

MZ-R900 6-6. IC PIN FUNCTION DESCRIPTION • IC501 SN761057DBT (RF AMP, FOCUS/TRACKING ERROR AMP) Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin Name TE REXT WPPLPF VREF11 C D D-C IY IX JX JY A A-C B TON-C CIG I/O Description O Tracking error signal output to the system controller (IC801) - Connect terminal to the external resistor for ADIP amp control - Connect terminal to the external capacitor for TPP/WPP low-pass filter O Reference voltage output terminal (+1V) I Signal (C) input from the optical pickup detector I Signal (D) input from the optical pickup detector I Signal (D) input from the optical pickup detector (AC input) I I-V converted RF signal (IY) input from the optical pickup detector I I-V converted RF signal (IX) input from the optical pickup detector I I-V converted RF signal (JX) input from the optical pickup detector I I-V converted RF signal (JY) input from the optical pickup detector I Signal (A) input from the optical pickup detector I Signal (A) input from the optical pickup detector (AC input) I Signal (B) input from the optical pickup detector - Connect terminal to the external capacitor for TON hold - Connect terminal to the external capacitor for the low-pass filter of NPP divider denominator 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35~37 38 39, 40 41 42 43 44 CDN PD-NI PD-I PD-O ADFG DVDD SBUS SCK RESET OFTRK DGND BOTM PEAK VREF075 VC CCSL2 RF OUT AGND EQ, LP, PS AGND OFC2, OFC-1 ABCD FE S-MON ADIP-IN - Connect terminal to the external capacitor for the low-pass filter of CSL divider denominator I Light amount monitor input terminal (non-invert input) I Light amount monitor input terminal (invert input) O Light amount monitor output terminal O ADIP duplex FM signal (22.05kHz ± 1kHz) output to the system controller (IC801) - Power supply terminal (+2.3V) (digital system) I/O SSB serial data input/output with the system controller (IC801) I SSB serial clock signal input from the system controller (IC801) I Reset signal input from the system controller (IC801) "L": reset I Off track signal input from the system controller (IC801) - Ground terminal (digital system) O Bottom hold signal output of the light amount signal (RF/ABCD) to the system controller (IC 801) O Peak hold signal output of the light amount signal (RF/ABCD) to the system controller (IC 801) - Connect terminal to the external capacitor for the internal reference voltage O Middle point voltage (+1.2V) generation output terminal - Connect terminal to the external capacitor for TPP/WPP low-pass filter O Playback EFM RF signal output to the system controller (IC801) - Ground terminal (analog system) - Connect terminal to the external capacitor for the RF equalizer - Power supply terminal (analog system) (+2.3V) - Connect terminal to the external capacitor for RF AC coupling O Light amount signal (ABCD) output to the system controller (IC801) O Focus error signal output to the system controller (IC801) O Servo signal monitor output to the system controller (IC801) I ADIP duplex FM signal (22.05kHz ± 1kHz) input terminal (not used in this set) 33