Table 6-5. I/O Expansion Board (Optional) Connector Pin Descriptions - Thermo Scientific 146i Instruction Manual

Thermo Fisher Scientific
Table 6-4. Front Panel Board Connector Pin Diagram, continued
Connector Reference
Label Designator
KEYBOARD J3
LCD BACKLIGHT J4

Table 6-5. I/O Expansion Board (Optional) Connector Pin Descriptions

Connector Reference
Label Designator
EXPANSION I/O J1
Pin Signal
Description
6 Ground
7 LCD Bias Voltage
8 LD0_5V – LCD Signal
9 LD1_5V – LCD Signal
10 LD2_5V – LCD Signal
11 LD3_5V – LCD Signal
12 LD4_5V – LCD Signal
13 LD5_5V – LCD Signal
14 LD6_5V – LCD Signal
15 LD7_5V – LCD Signal
16 Ground
1 Keypad Row 1 Input
2 Keypad Row 2 Input
3 Keypad Row 3 Input
4 Keypad Row 4 Input
5 Keypad Col 1 Select
6 Keypad Col 2 Select
7 Keypad Col 3 Select
8 Keypad Col 4 Select
1 LCD Backlight Voltage 1
2 NC
3 NC
4 LCD Backlight Voltage 2
Pin Signal
Description
1 Analog Voltage Input 1
2 Analog Voltage Input 2
3 Analog Voltage Input 3
4 Ground
5 Analog Voltage Input 4
Model 146i Instruction Manual
Troubleshooting
Connector Pin Descriptions
6-17