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Pick Up Pin Assignment - LG GSA-4040B Service Manual

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2. Pick up Pin Assignment

No.
Signal Name
1
CLK
2
CLKB
3
NRZ
4
NRZB
5
LDD GND
6
SCLK
7
MONITOR
8
RWB
9
SDIO
10
SEN
11
BUSY
12
SRF
13
VSO
14
VSA5
15
VSL33
16
SLG
17
ENA
18
LDD GND
19
IAPC
20
LPS2
21
LPS1
22
LPS LED DRV
23
VC25
24
F MON
25
FM SW(CD/DVD sleep)
26
THERM
27
VC165
28
29
30
EF1
31
EF2
32
EF3
33
EF4
34
35
WRF
36
RFIN
37
RFIP
38
39
40
41
42
VC21
43
44
45
46
47
AVCC
48
AGND
49
TILT-
50
TILT+
51
FACT-
52
FACT+
53
TACT-
54
TACT+
* When connector no.5(TILT+) is + polarity, the objective rotate C.W from sub-bar toward main-bar.
38
I/O
I
I
I
I
I
O
I
I
I
I
I
I
I
I
O
O
I
O
I
O
F
O
E
O
O
O
O
O
RF
O
O
O
O
A3
O
A2
O
B2
O
B4
O
B1
O
B3
O
A1
O
A4
O
I
I
I
I
I
I
* Connector left side is no.1 and right side is no.54.
Signal Description
Clock for NRZ code input.
LVDS
NRZ laser data (H=mark, L=space)
NRZ laser data (L=mark, H=space)
ground connection
Serial control clock
Monitor output
Write enable for NRZ laser data(L=write, H-read)
Serial data for parameters and control
Serial control enable.
RAM busy signal
signal OEIC gain control (H=high gain, L=low gain)
power supply for output driver (+5V)
power supply for PLL (+5V)
power supply for logic (+3.3V)
Land/groove input selects (H=land, L=groove)
fast chip enable input
ground connection
lapc input
Lens position sensor 2 signal output
Lens position sensor 1 signal output
Lens position sensor LED(Cathode)
APC amplifier reference voltage input (+2.5V)
APC amplifier output
APC amplifier gain control (H=DVD, L=CD)
output voltage for controlling temperature
reference voltage input(+1.65V)
signal Hologram Unit output F
signal Hologram Unit output E
signal Hologram Unit output EF1
signal Hologram Unit output EF2
signal Hologram Unit output EF3
signal Hologram Unit output EF4
signal Hologram Unit output RF
signal Hologram Unit output WRF
signal OEIC output RF-
signal OEIC putput RF+
signal OEIC putput A3
signal OEIC output A2
signal OEIC putput B2
signal OEIC putput B4
reference voltage input (+2.1V)
signal OEIC output B1
signal OEIC output B3
signal OEIC output A1
signal OEIC output A4
power supply for OEIC (+5V)
ground connection
Tilting Actuator drive signal -
Tilting Actuator drive signal +
Focusing Actuator drive signal -
Focusing Actuator drive signal +
Tracking Acutuator drive signal -
Tracking Actuator drive signal +

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