Samsung SC-148B, Руководство по обслуживанию

Страница: 5 / 55

29
PIN NO PIN NAME FUNCTION
1 VCC POWER SOURCE/VOLTAGE TERMINAL
2 RFGC RF FREQUENCY CONTROL SIGNAL INPUT TERMINAL
3 RPBW SEL TERMINAL COMBINATIAU DETELTOR CONTROL TERMINAL
4 FNI MAIN BEAM AMP INPUT TERMINAL
5 FPI MAIN BEAM AMP INPUT TERMINAL
6 TPI SUB BEAM AMP INPUT TERMINAL
7 TNI SUB BEAM AMP INPUT TERMINAL
8 MDI MONITOR PHOTO-DIODE AMP INPUT TERMINAL
9 LDO LASER DIODE AMP OUTPUT TERMINAL
10 SEL APC CIRCHIT ON/OFF SIGNAL, LDO TERMINAL CONTROL INPUT TERMINAL.
BOTTOM/PEAK FREGUENCY SWITCH TERMINAL
11 TEB TRACKING ERROR BALANCE CONTROL SIGNAL INPUT TERMINAL
12 VRO STANDARD VOLTAGE OUTPUT TERMINAL VCC=5.0V VRD=2.1V
13 TEN TRACKING ERROR SIGNAL GENERATING AMP REVERSE INPUT TERMINAL
14 TEO TRACKING ERROR SIGNAL GENERATING AMP OUTPUT TERMINAL
15 SBAD SUB BEAM ADDITIONAL SIGNAL OUTPUT TERMINAL
16 FEO FOCUS ERROR SIGNAL GENERATING AMP OUTPUT TERMINAL
17 FEN FOCUS ERROR SIGNAL GENERATING AMP REVERSE INPUT TERMINAL
18 VDDIN VDD INPUT TERMINAL
19 VREF STANDARD VOLTAGE(VREF)OUTPUT TERMINAL VDDIN=3.6[V] VREF=1.80[V]
20 RFRP SIGNAL GENERATING AMP OUTPUT TERMINAL FOR TRACK COUNTER
21 BTC RECT SIGNAL GENERATING BOTTOM DETECTOR CONTROL TERMINAL
22 RFCT RFRP SIGNAL CENTER LEVEL OUTPUT TERMINAL
23 PKC RFCT SIGNAL GENERATING PEAK DETECTOR CONTROL TERMINAL
24 RFRPIN SIGNAL GENERATING AMP INPUT TERMINAL FOR TRACK COUNTER
25 RFGO RF SIGNAL AMPLITUDE ADJUSTING AMP OUTPUT TERMINAL
26 GVSW AGC,TE, FE AMP GAIN SWITCH TERMINAL
27 AGCIN RF SIGNAL AMPLITUDE ADJUSTING AMP INPUT TERMINAL
28 RFO RF SIGNAL GENERATING AMP OUTPUT TERMINAL
29 GND GND TERMINAL
30 RFN2 RF SIGNAL GENERATING AMP INPUT TERMINAL
PIN DESCRIPTIONS
RPBW SEL FC [kHz]
L / HiZ L / HiZ 100
L / HiZ L / HiZ 400
L / HiZ L / HiZ 800
GVSW LEVEL MODE
GND CD-RW
HIZ NORMAL
VCC NORMAL
SEL LEVEL APC CIRCUIT LDO
GND OFF 100
HiZ ON CONTROL SIGNAL OUTPUT
VDD ON CONTROL SIGNAL OUTPUT