Pick Up Pin Assignment - LG GCC-4520B Service Manual

2. Pick up Pin Assignment

No. Signal Name
1 Vc(OEIC)
2 SW
3 EF3
4
5
6 EF4
7 EF1
8
9
10 EF2
11 RF+
12 RF-
13 GND(OEIC)
14 Vcc(OEIC)
15
16
17
18 VCC(LD.FM)
19 VCC(HF)
20 TEMP
21 RSET
22 ESET
23 W1SET
24 W2SET
25 GND(LD, HF)
26 W1DIS
27 W2DIS
28 RDIS
29 EDIS
30 ENABLE
31 OSCEN
32 VREF(FM)
33
34 GND(FM)
35 AF+
36 AF-
37 TR+
38 TR-
39 TILT+
40 TILT-
IOUT CONTROL
ENBLE RDIS EDIS W1DIS W2DIS
0 X X
1 1 1
1 0 1
1 1 0
1 1 1
1 1 1
28
I/O
I
I
O
D O
C O
O
O
A O
B O
O
O
O
I
LD I
PD O
VR O
I
I
O
I
I
I
I
I
I
I
I
I
I
I
FM O
I
I
I
I
I
I
OSCILLATOR CONTROL
ENBLE
X X
1 1
1 1
1 1
0 1
1 0
X : Don't care
Signal Description
reference voltage input for OEIC (+2.3V)
gain swich for signal OEIC output (Gain 8.7dB)
signal OEIC output EF3
signal OEIC output D
signal OEIC output C
signal OEIC output EF4
signal OEIC output EF1
signal OEIC output A
signal OEIC output B
signal OEIC output EF2
signal OEIC output RF+
signal OEIC output RF-
ground connection for OEIC
Power supply for HF signal and OEIC
input current for driving Laser Diode
output current of Laser Diode power monitor for APC amplifier
output voltage of controlling signal level of Laser Diode for APC
power supply for LD (+5V) and FM
power supply for HF (+5V)
output voltage for controlling temperature
input voltage for current amplifier
input voltage for current amplifier
input voltage for current amplifier
input voltage for current amplifier
ground connection for LD-IC and HF signal
Digital control of channel W1SET (low active)
Digital control of channel W2SET (low active)
Digital control of channel RSET (low active)
Digital control of channel ESET (low active)
Enables output current (high active)
Oscilator shutdown (OSCEN Low=oscillator off, Floats Low)
reference voltage input for FM
APC amplifier output
ground connection for FM
focusing Actuator drive signal +
focusing Actuator drive signal -
tracking Actuator drive singal +
tracking Actuator drive signal -
Tilting Actuator drive signal +
Tilting Actuator drive signal -
RDIS EDIS
0 X X
1 1 1
1 0 0
1 0 0
W1DIS W2DIS OSCEN OSCILATOR
X X
1 1
0 0
0 0
X OFF
X OFF
0 OFF
1 ON