Sony MZ-E80, Руководство по обслуживанию

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6-4. IC PIN FUNCTION DESCRIPTION
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MAIN BOARD IC501 CXA2523ATQ-T4 (RF AMP, FOCUS/TRACKING ERROR AMP)
Pin No. Pin Name I/O Description
1 I I
I-V converted RF signal I input from the optical pick-up block detector
2 J I
I-V converted RF signal J input from the optical pick-up block detector
3 VC O
Middle point voltage (+1.2V) generation output terminal
4 to 9 A to F I
Signal input from the optical pick-up detector (A to F)
10 PD I
Light amount monitor input from the optical pick-up block laser diode
11 APC O
Laser amplifier output terminal to the automatic power control circuit
12 APCREF I
Reference voltage input terminal for setting laser power
13 GND —
Ground terminal
14 TEMPI I
Connected to the temperature sensor Not used (open)
15
TEMPR O
Output terminal for a temperature sensor reference voltage Not used (open)
16 SWDT I
Writing data input from the CXD2663GA (IC601)
17 SCLK I
Serial clock signal input from the CXD2663GA (IC601)
18 XLAT I
Serial latch signal input from the CXD2663GA (IC601)
19 XSTBY I
Standby control signal input from the system controller (IC801) “L”: standby
20 F0CNT I
Center frequency control signal input terminal of internal circuit (BPF22, BPF3T, EQ) input from
the CXD2663GA (IC601)
21 VREF O
Reference voltage output terminal Not used (open)
22 EQADJ I
Center frequency setting terminal for the internal circuit (EQ)
23 3TADJ I
Center frequency setting terminal for the internal circuit (BPF3T)
24 VCC —
Power supply terminal (+2.4V)
25 WBLADJ I
Center frequency setting terminal for the internal circuit (BPF22)
26 TE O
Tracking error signal output to the CXD2663GA (IC601)
27 CSLED I
Connected to the capacitor for low-pass filter of the sled error signal
28 SE O
Sled error signal output to the CXD2663GA (IC601)
29 ADFM O
FM signal output terminal of the ADIP
30 ADIN I
Receives a ADIP FM signal in AC coupling
31 ADAGC I
Connected to the external capacitor for ADIP AGC
32 ADFG O
ADIP duplex FM signal (22.05 kHz
±
1 kHz) output to the CXD2663GA (IC601)
33 AUX O
Auxiliary signal (I
3
signal/temperature signal) output to the CXD2663GA (IC601)
34 FE O
Focus error signal output to the CXD2663GA (IC601)
35 ABCD O
Light amount signal output to the CXD2663GA (IC601)
36 BOTM O
Light amount signal (RF/ABCD) bottom hold output to the CXD2663GA (IC601)
37 PEAK O
Light amount signal (RF/ABCD) peak hold output to the CXD2663GA (IC601)
38 RF O
Playback EFM RF signal output to the CXD2663GA (IC601)
39 RFAGC I
Connected to the external capacitor for RF auto gain control circuit
40 AGCI I
Receives a RF signal in AC coupling
41 COMPO O
User comparator output terminal Not used (open)
42 COMPP I
User comparator input terminal Not used (fixed at “L”)
43 ADDC I
Connected to the external capacitor for cutting the low band of the ADIP amplifier
44 OPO O
User operational amplifier output terminal Not used (open)
45 OPN I
User operational amplifier inversion input terminal Not used (fixed at “L”)
46 RFO O
RF signal output terminal
47 MORFI I
Receives a MO RF signal in AC coupling
48 MORFO O
MO RF signal output terminal