User`s guide
Board Schematics
80 M1 System Management Board User’s Guide
Figure C-12. LCD Display, Potentiometer, Temperature Diodes
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
LCD MODULE INTERFACE CIRCUIT
POTENTIOMETER
TEMPERATURE DIODE
NEAR REGULATORS NEAR FAN ASSY NEAR LCD
Placed between the two PCI Slots
NEAR EXPOSED
COPPER PAD
LCD Display, Potentiometer, Temp Diodes A
M7AFS System Management Board
B
13 19Wednesday, September 13, 2006
Title
Size Document Number Rev
Date: Sheet of
CW
Vss
LCD_RW
LCD_RS
LCD_RE
LCD0
LCD1
LCD2
LCD3
LCD4
LCD5
LCD7
LCD6
Vo
K
CCW
VDD
A
AV_POT
AT8_HEATER
AT4_COPPER
AT6_LCD
ATRN_LCDATRN_HEATER
ATRN_COPPER
AT3_PCI
AT0_REG
ATRN_REG
ATRN_PCI
FPGA_LCD_DB0
FPGA_LCD_DB6
FPGA_LCD_DB7
FPGA_LCD_DB3
FPGA_LCD_DB4
FPGA_LCD_DB2
FPGA_LCD_DB5
FPGA_LCD_DB1
FPGA_LCD_TR
FPGA_LCD_RW
FPGA_LCD_RS
FPGA_LCD_RE
LCD_BL_ON
SKP_3.3V
SKP_5V
SKP_3.3V
SKP_5V
SKP_5V
C244
OPEN
1 2
C37
2000pF 50V
12
C242
2-2uF 16V
R37 39
U21
74LVT245
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
19
1
10
20
A0
A1
A2
A3
A4
A5
A6
A7
B0
B1
B2
B3
B4
B5
B6
B7
OE
T/R
GND
V3_3
C61
0-1uF 10V
12
LCD1
LCMS01602DSFC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
C90
0-1uF 10V
12
C60
2000pF 50V
12
Q10
MMBT3904LT1
1
32
R39 39
R156
432
JP19
1 2
R254
0
C243
2000pF 50V
12
R3
0-1
Q7
MMBT3904LT1
1
32
R19
10k Pot
C58
0-1uF 10V
12
C56
0-1uF 10V
12
R38 39
C96
2000pF 50V
12
R42 39
C59
0-1uF 10V
12
R40 39
Q1
MMBT3904LT1
1
32
R35 39
R150
2k Pot 3310Y-001-202-ND
Q16
MMBT3904LT1
1
32
R41 39
C57
0-1uF 10V
12
R36 39
Q17
MMBT2222
1
2 3