Explanation Of Ic Terminals - Sony HCD-MJ1 Service Manual

IC101 RF AMP (CXA1981AR)
Pin No. Pin name
1 VC
2 – 7 A– F
8 FI
9 FO
10 PD
11 APCREF
12 TEMPI
13 GND
14 AAPC
15 DAPC
16 TEMPR
17 XRST
18 SWDT
19 SCLK
20 XLAT
21 VREF
22 TENV
23 THLD
24 VCC
25 TFIL
26 TE
27 TLB
28 CSLED
29 SE
30 ADFM
31 ADIN
32 ADAGC
33 ADFG
34 AUX
35 FE
36 FLB
37 ABCD
38 BOTM
39 PEAK
40 PFAGC
41 RF
42 ISET
43 AGCT
44 RFO
45 MORFI
46 MORFO
47,48 I,J
SECTION 7

EXPLANATION OF IC TERMINALS

I/O
O Output terminal for the center point voltage (+1.4V) generated.
I Signal input from detector circuit in the optical pick-up block.
I Signal (–) input of the operational amplifier for F signal.
O Signal output of the operational amplifier for F signal.
I Front monitor. Connected to the photo diode.
I Input terminal for the setting of laser power.
I Terminal for the connection to temperature sensor.
– Ground terminal.
O LD amplifier output terminal of APC circuit.
O Not used. (Open)
O Output terminal of thr reference voltage for temperature sensor.
I Reset signal input from the system controller (IC201).
I Write data signal input from the system controller (IC201).
I Clock signal input from the system controller (IC201).
I Latch signal input from the system controller (IC201).
O Reference voltage output.
O Not used. (Open)
I Not used. (Connected to the VC)
– Power supply terminal. (+5V)
I Not used. (Open)
O Tracking error signal output to CXD2535BR (IC121).
I Input terminal of the adder signal to tracking error.
I Terminal for the sled error lowpass filter.
O Sled error signal output to CXD2535BR (IC121).
O FM signal output terminal of the ADIP.
I Input terminal by AC coupling is FM signal of the ADIP.
I External capacitor connect terminal for AGC of the ADIP.
O ADIP double turned FM signal output to CXD2535BR (IC121). (22.05kHz±1kHz)
O Sub signal output to CXD2535BR (IC121).
O Focus error signal output to CXD2535BR (IC121).
I Not used. (Open)
O Light amount signal output to CXD2535BR (IC121).
O Light amount bottom hold signal output to CXD2535BR (IC121).
O Light amount peak hold signal output to CXD2535BR (IC121).
I External capacitor connect terminal of AGC circuit for the RF.
O Playback EFM RF signal output to CXD2535BR (IC121).
I Setting terminal for the internal circuit constant.
I Input terminal by AC coupling is RF signal.
O RF signal output terminal.
I Input terminal by AC coupling is RF signal of the MO.
O RF signal output terminal of the MO.
I Signal input from detector circuit in the optical pick-up block.
– 22 –
Description
When reset : "L"
Not used this set (Open)
22kHz, BPF center frequency