JVC RC-EX30B Service Manual page 7

TA2153FN(IC202):RF Amplifier for Digital servo CD system
1.Terminal layout 1.Terminal layout
1
15
3.Pin function
Pin No. Symbol
1 VCC
2 RFGC
3 GMAD
4 FNI
5 FPI
6 TPI
7 TNI
8 MDI
9 LDO
10 SEL
11 TEB
12 2VRO
13 TEN
14 TEO
15 SBAD
16 FEO
17 FEN
18 SEB
19 VRO
20 RFRP
21 BTC
22 RECT
23 PKC
24 RFRPIN
25 RFGO
26 GVSW
27 AGCIN
28 RFO
29 GND
30 RFN2
2.Block diagram
30
16
I/O
- Power supply input terminal.
I RF amplitude adjststment control signal input terminal.
I Open loop gain adjustment terminal for AGC AMP.
I Main beam I-V amp input terminal.
I Main beam I-V amp input terminal.
I Sub beam I-V amp input terminal.
I Sub beam I-V amp input terminal.
I Monitor photo diode amp input terminal.
O Laser diode amp input terminal.
I Laser diode control signal input terminal and APC Circuit ON/OFF control
I Tracking error balance adjustment signal input terminal.
O Reference voltage (2VRO) output terminal.
I TE amp negative input terminal.
O TE error signal output terminal.
O Sub beam adder signal output terminal.
O Focus error ignal output terminal.
I FE amp negative
I RFRP output circuit switching terminal.
O Reference signal (VRO) output terminal.
O Track count signal output terminal.
I Time constant adjustment terminal for bottom detection.
O RFRP signal center lever output terminal.
I Time constant adjustment terminal for peak detection.
I Input terminal for track count signal output amp.
O Output terminal for RF signal amplitude adjustment amp.
I Amp(AGC,FE,TE) gain switching terminal.
I Input terminal for RF signal amplitude adjustment amp.
O Output terminal RF signal amp.
- Ground terminal.
I Input terminal for RF signal amp.
Function
RC-EX30
7