Teac MC-D95, Service Manual, Page: 11 / 32

SERVICE MANUAL
11
TA2109F (RF/DIGITAL SERVOR)
PIN No. NAME I/O DESCRIPTION REMARK
VCC
FNI
FPI
TPI
TNI
MDI
LDO
SEL
TEB
2VRO
TEN
TEO
SBAD
FEO
FEN
VRO
RFRP
RFIS
RFGO
RFGC
AGCI
RFO
GND
RFN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Power supply input terminal
Main beam I-V amp input terminal
Main beam I-V amp input terminal
Sub beam I-V amp input termianl
Sub beam I-V amp input termianl
Monitor phono diode amp input terminal
Laser diode amp output terminal
Laser diode control signal input terminal and APC
circuit ON/OFF control signal input terminal
Tracking error balance adjustment signal input
terminal. Controlled by 3 PWM signal
(PWM carrier = 88.2 kHz)
Reference voltage (2 VREF) output terminal
2
VREF
= 4.2V when V
CC
= 5V
TE amp negative input terminal
TE error signal output terminal
Sub beam adder signal output terminal
Focus error signal output terminal
FE amp negative input terminal
Reference voltage (V
REF
) output terminal
V
REF
= 2.1V when V
CC
= 5V
Track count signal output terminal
RFRP detect circuit input terminal
RF gain signal output terminal
RF amplitude adjustment control signal input
terminal. Controlled by 3 PWM signal
(PWM carrier = 88.2 kHz)
RF signal amplitude adjustment amp input terminal
RF signal output terminal
Ground terminal
RF amp negative input terminal
-
Connected to pin diode A,C
Connected to pin diode B,D
Connected to pin diode F
Connected to pin diode E
Connected to monitor photo
diode
Connected to laser control circuit
3 signal input (V
CC
, Hi-Z, GND)
3 signal input (2 V
REF
, VR, GND)
-
Connected to TEO through
feedback register
-
-
-
Connected to FEO through
feedback register
-
-
Connected to RFO through
condenser
-
3 signal input (2
VREF
, VR, GND)
Connected to RFO through
condenser
-
-
-
-
I
I
I
I
I
O
I
I
O
I
O
O
O
I
O
O
I
O
I
I
O
-
I