![background image](http://html.mh-extra.com/html/lg/gsa-4166b/gsa-4166b_service-manual_211208063.webp)
67
Pin Pin
Name
I/O
Connection
Description
Number
Target
64
PWM1A
O
DRIVER
Focus 2(tilt) drive differential PWM+ output, focus 2 drive BSDA output.
65
PWM1B
I/O
DRIVER
Focus 2(tilt) drive differential PWM-output
P11
General-purpose I/O
66
PWM2A
I/O
DRIVER
Tracking drive differential PWM+ output, tracking drive BSDA output
P27
General-purpose I/O
67
PWM2B
Tracking drive differential PWM-output
P12
I/O
DRIVER
General-purpose I/O, IEC958-compliant digital output
TX
Debugging serial TX
68
PWM3A
O
DRIVER
Traverse drive differential PWM+ output, stepper 1 drive output
69
PWM3B
I/O
DRIVER
Traverse drive differential PWM- output, stepper 2 drive output
P13
General-purpose I/O
70
PWM4
O
DRIVER
Spindle drive output
71
FG
I
DRIVER
Spindle FG input(5V input)
72
SEN
O
FEP
FEP serial interface enable
73
SCK
O
FEP
FEP serial interface clock
74
SDAT
I/O
FEP
FEP serial interface data
75
RSEN
O
FEP
FEP serial interface enable2(RF)
76
RSDAT
O
FEP
FEP serial interface data2(RF)
77
BDO
I
FEP
Dropout signal
78
MASTER
I/O
HOST
ATAPI master/slave signal
P23
General-purpose I/O
79
NRESET
I
HOST
ATAPI reset signal
80
HDD7
I/O
HOST
ATAPI data I/O
81
HDD8
I/O
HOST
ATAPI data I/O
82
HDD6
I/O
HOST
ATAPI data I/O
83
VSS
GND
GND
Digital Vss
84
VDD12
Power supply
Power supply
Internal logic Vpp(1.2V)
85
VDD3
Power supply
Power supply
I/O pad V
DD
(3.3V)
86
HDD9
I/O
HOST
ATAPI data I/O
87
HDD5
I/O
HOST
ATAPI data I/O
88
HDD10
I/O
HOST
ATAPI data I/O
89
HDD4
I/O
HOST
ATAPI data I/O
90
HDD11
I/O
HOST
ATAPI data I/O
91
HDD3
I/O
HOST
ATAPI data I/O
92
HDD12
I/O
HOST
ATAPI data I/O
93
HDD2
I/O
HOST
ATAPI data I/O
94
HDD13
I/O
HOST
ATAPI data I/O
95
VSS
GND
GND
Digital Vss
Summary of Contents for GSA-4166B
Page 18: ...2 2 Pick up A Release 1 screw C and remove the Pick up Pick up Unit Pick up C Fig 2 2 18 ...
Page 39: ...43 3 MD Assy For LightScribe Optical Encoder Unit OPU ID Movement Range L 21um ...
Page 86: ...90 CD Laser Power Setup Result HC_CD Laser Power Setup Result DVD Laser Power Setup Result ...