Sony HCD-MD555 Service Manual page 87

• IC101 RF AMPLIFIER, FOCUS/TRACKING ERROR AMPLIFIER (CXA2523AR) (BD (MD) BOARD)
Pin No. Pin Name I/O
1 I I
2 J I
3 VC O
4 to 9 A to F I
10 PD I
11 APC O
12 APCREF I
13 GND —
14 TEMPI I
15 TEMPR O
16 SWDT I
17 SCLK I
18 XLAT I
19 XSTBY I
20 F0CNT I
21 VREF O
22 EQADJ I
23 3TADJ I
24 VCC —
25 WBLADJ I
26 TE O
27 CSLED I
28 SE O
29 ADFM O
30 ADIN I
31 ADAGC I
32 ADFG O
33 AUX O
34 FE O
35 ABCD O
36 BOTM O
37 PEAK O
38 RF O
39 RFAGC I
40 AGCI I
41 COMPO O
42 COMPP I
43 ADDC I
44 OPO O
45 PON I
46 RFO O
47 MORFI I
48 MORFO O
I-V connected RF signal input (I) from optical pickup
I-V connected RF signal input (J) from optical pickup
Center point voltage (+ 1.65 V) generation output terminal
Signal input from optical pickup (A to F)
Light amount monitoring input from the laser diode of optical pickup
Laser amplifier output to automatic power control circuit
Reference voltage input from CXD2654AR (IC121) for setting laser power
Ground terminal
Temperature sensor ground terminal
Temperature sensor reference voltage output
Write data input from CXD2654AR (IC121)
Serial clock input from CXD2654AR (IC121)
Serial latch signal input from CXD2654AR (IC121)
Standby signal input terminal L: standby Fixed at "H" in this set
Center frequency control signal input to the internal filters (BPF22, BPF3T, EQ) from CXD2654AR (IC121)
Reference voltage output terminal Not used in this set (open)
Input signal to set the center frequency of the internal filter (EQ)
Input signal to set the center frequency of the internal filter (BPF3T)
Power supply terminal (+3.3 V)
Input signal to set the center frequency of the internal filter (BPF22)
Tracking error signal output to CXD2654AR (IC121)
External low-pass filter capacitor of the sled error signal is connected to this terminal
Sled error signal output to CXD2654AR (IC121)
FM signal output of ADIP
ADIP FM signal input with AC coupling
External AGC capacitor for ADIP is connected to this terminal
ADIP duplex FM signal (22.05 kHz ± 1 kHz) output to CXD2654AR (IC121)
Auxiliary signal (I3 signal/temperature signal) output to CXD2654AR (IC121)
Focus error signal output to CXD2654AR (IC121)
Light amount signal output to CXD2654AR (IC121)
Light amount signal (RF/ABCD) bottom hold output to CXD2654AR (IC121)
Light amount signal (RF/ABCD) peak hold output to CXD2654AR (IC121)
Playback EFM RF signal output to CXD2654AR (IC121)
External AGC capacitor for RF is connected to this terminal
RF signal input with AC coupling
User comparator output terminal Not used in this set (open)
User comparator input terminal Not used in this set (Fixed at "L")
External capacitor for cutting the low frequency range of the ADIP amplifier is connected to this terminal
Output to user OP. Not used in this set (open)
Inverted input from user OP amplifier. Not used in this set (Fixed at "L")
RF signal output terminal
MO RF signal input with AC coupling
MO RF signal output terminal
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Description