Sharp XL-30H Service Manual page 47

IC801 VHiTA2109F/-1:Servo Pre Amp. (TA2109F)
Pin No. Terminal Name
1 VCC
2 FNI
3 FPI
4 TPI
5 TNI
6 MDI
7 LDO
8 SEL
9 TEB
10 2VRO
11 TEN
12 TEO
13 SBAD
14 FEO
15 FEN
16 VRO
17 RFRP
18 RFIS
19 RFGO
20 RFGC
21 AGCI
22 RFO
23 GND
24 RFN
13
SBAD
50kΩ
14
FEO
36pF
7.96kΩ
FEN 15
10kΩ
16
VRO
21kΩ
50µA
20kΩ
17
RFRP
18
RFIS
20kΩ
RFGO 19
20
RFGC
23.5kΩ
21
AGCI
re = 130Ω
RFO 22
23
GND
1.53kΩ
24
RFN
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Input/Output
— Power voltage terminal
Input Main beam amp input terminal
Input Main beam amp input terminal
Input Sub-beam amp input terminal
Input Sub-beam amp input terminal
Input Monitor photodiode amp input terminal
Output Laser diode amp output terminal
Input Laser diode control signal input and APC circuit ON/OFF signal input terminal
Input Tracking error balance adjustment signal input terminal
To be controlled by 3-value PWM signal. (PWM carrier = 88.2 kHz)
Output Standard voltage (2VR) output terminal. When Vcc = 5V, 2VR = 4.2V.
Input Tracking error signal generation amp reversed phase input terminal
Output Tracking error signal generation amp output terminal
Output Sub-beam addition signal output terminal
Output Focus error signal generation amp output terminal
Input Focus error signal generation amp reversed phase input terminal
Output Standard voltage (VR) output terminal. When Vcc = 5V, VR = 2.1V.
Output Track count signal generation amp output terminal
Input RFRP detection circuit input terminal
Output RF signal output terminal
Input RF amplitude adjustment control signal input terminal
The amplitude of RF signal can be controlled by using the 3-value PWM signal (PWM
carrier = 88.2 kHz) which is output from the RFGC terminal of TC9432F.
Input RF signal amplitude adjustment amp input terminal
Output RF signal generation amp output terminal
— GND terminal
Input RF reversed phase input terminal
15kΩ 30kΩ
10kΩ
15kΩ
10kΩ
20µA
10kΩ
21kΩ 29kΩ
24kΩ 24kΩ
21kΩ
12kΩ
1.74kΩ
12kΩ
65µA
PEAK
BOTTOM
180kΩ
20pF
180kΩ
12kΩ
20pF
180kΩ
40pF
60kΩ
60kΩ
Figure 47 BLOCK DIAGRAM OF IC
Function
7.67kΩ
12
TEO
20pF
10kΩ
11 TEN
10 2VRO
9 TEB
3 STATE
DET.
8
SEL
SW LDC
47kΩ 1
1kΩ
SW
2
7 LDO
680kΩ
SW
3
6 MDI
13kΩ
2.12kΩ
5 TNI
I . I
4 TPI
I . I
20kΩ
3 FPI
20kΩ
20kΩ
2 FNI
20kΩ
1 VCC
– 47 –
XL-30H/30W
LDC
SEL
SW1 SW2
SW3
L
ON OFF OFF
HiZ OFF
ON ON
ON ON
H OFF