JVC XM-PX50WT Service Manual page 21

CXA2588R (IC300) : RF amp.
1. Pin layout & block diagram
PEAK 37
RF 38
RFAGC 39
AGCI 40
NC 41
NC 42
ADDC 43
NC 44
0/-2dB
TEGC 45
RFO 46
MORFI 47
MORFO 48
2.Pin function
Pin
Function
Symbol I/O
No.
1 I
I I-V converted RF signal I input
2 I
J I-V converted RF signal J input
3 O
VC Vcc/2 voltage output
4 I
A A current input for main beam servo signal
5 I
B B current input for main beam servo signal
6 I
C C current input for main beam servo signal
7 I
D D current input for main beam servo signal
8 I
E E current input for side beam servo signal
9 I
F F current input for side beam servo signal
10 I
PD Reflection light q'ty monitor signal input
11 O
APC Laser APC output
12 I
APCREF Ref. voltage input for laser power intensity setting
13 -
GND Ground
14 O
OPOUT Ope. amp output terminal
15 I
OPIN 21dB ope. amp input terminal
16 I
SWDT Serial data input terminal
17 I
SCLK Shift clock input terminal
18 I
XLAT Latch input terminal
19 I
XSTBY Stand by setting terminal
20 I
F0CNT F0 count setting terminal
21 O
VREF Reference voltage output terminal
22 I/O
EQADJ EQ IF setting terminal
23 I/O
3TADJ BPF3T IF setting terminal
24 -
Vcc Power supply
31 30
36 35 34 33 32
ADIP Amp
FE Amp
I-V Amp
1 2 3 4 5 6 7
Pin
Symbol
No.
25 WBLADJ
26 TE
27 CSLED
28 SE
29 ADFM
30 ADIN
31 ADAGC
32 ADFG
33 AUX
34 FE
35 ABCD
36 BOTM
37 PEAK
38 RF
39 RFAGC
40 AGCI
41 NC
42 NC
43 ADDC
44 NC
45 TEGC
46 RFO
47 MORFI
48 MORFO
27 25
29 28 26
TE/SE Amp
CPU
Command
I/F
OP
Amp
I-V
APC
Amp
8 9 10 11 12
Function
I/O
BPF3T IF setting terminal
I/O
Tracking error signal output terminal
O
Sled error signal LPF capacitor connect terminal
-
Sled error signal output terminal
O
ADIP FM signal output terminal
O
ADIP signal completer input terminal
I
ADIP AGC capacitor connect terminal
-
ADIP binary signal output
O
I3 output/temp.signal output
O
Focus error signal output
O
O Reflection light q'ty signal output for main beam servo detector
RF/ABCD bottom-hold signal output
O
RF/ABCD peak-hold signal output
O
RF equalizer output
O
RFAGC capacitor connection
-
RFAGC input
I
Non connect
-
Non connect
-
ADIP amp. feedback circuit capacitor connection
I/O
Non connection
-
TE amp. gain switching
I
RF amp. output
O
Groove RF signal AC-coupled input
I
Groove RF signal output
O
XM-PX50WT
24 Vcc
23 3TADJ
22 EQADJ
21 VREF
20 F0CNT
19 XSTBY
18 XLAT
17 SCLK
16 SWDT
15 OP IN
14 OP OUT
13 GND
1-21