Stratasys uPrint Retrofit

PDB I/O Board

The I/O Board is the main place where connections are made to the ancillary boards in the extrusion head, X, Y motors, limit switches and front panel display. It is also where the main chamber's thermocouple is connected along with an on board analog-to-digital converter.

Diagram	PCB Designation	Connection	Function
A	J510 (PDB 1)		Board to Board Interconnect to the Power Distribution Card (PDC)
B	J511 (PDB 2)		Board to Board Interconnect to the Power Distribution Card (PDC)
C	J507 (CHAMBER TC)	Omega PCC-SMP-K	Chamber Thermocouple
D	J501 (Y-MOTOR)	Molex Microfit 3.0 (4-Pin)	Y-Axis Motor
E	J502 (X-MOTOR)	Molex Microfit 3.0 (6-Pin)	X-Axis Motor
F	J503 (Y SENSORS)	Molex Microfit 3.0 (18-Pin)	Y-Axis Limit Switches
G	J504 (UPPER HARNESS)	Molex Microfit 3.0 (24-Pin)	Front Panel & Chassis wiring (blower fan, on/off switch, chamber lights, door solenoid and magnetic door switch)
H	J505 (UMB1)	Molex Microfit 3.0 (22-Pin)	Umbilical head harness 1. (Model and support heaters, toggle switch sensor, X-axis limit switches)
I	J506 (UMB2)	Molex Microfit 3.0 (12-Pin)	Umbilical head harness 2 (Print bed level sensor, head drive motor, model and support thermocouple)

J501 (Y-MOTOR)

This connection connects the electronics to the Y-Axis motor (forward and back motion). This is a Molex Microfit 3.0 connector with 4 positions.

Pin	Wire Color	Function
1	Black	A+
2	Blue	B+
3	Green	A-
4	Red	B-

J502 (X-MOTOR)

This connection connects the electronics to the X-Axis motor (side to side motion). This is a Molex Microfit 3.0 connector with 6 positions.

Pin	Wire Color	Function
1	Black	A+
2	-	N/C
3	Black	B+
4	Black	A-
5	-	N/C
6	Black	B-

J503 (Y SENSORS)

Pin	Wire Color	Function
1	-	NC
2	-	NC
3	Red	+Vcc
4	Red	+Vcc
5	Yellow	Y-Axis End of Travel Limit Switch
6	-	NC
7	-	NC
8	-	NC
9	-	NC
10	-	NC
11	Green	Ground
12	Yellow	Y-Axis Home Limit Switch
13	Green	Ground
14	-	NC
15	-	NC
16	-	NC
17	-	NC
18	-	NC

J504 (UPPER HARNESS)

Pin	Wire Color	Function
1	Red	Front LCD, unknown function
2	White	Front LCD, unknown function
3	Blue	Front LCD, unknown function
4	Orange	Front LCD, unknown function
5	-	NC
6	Yellow	Power Switch
7	Yellow	Magnetic Sensor
8	White	Door Solenoid
9	Black	LED Lighting (Negative)
10	Black	LED Lighting (Negative)
11	-	NC
12	Black	Head Blower Fan (Positive)
13	Green	Front LCD, unknown function
14	Yellow	Front LCD, unknown function
15	Green	Front LCD, unknown function
16	-	NC
17	-	NC
18	Green	Power Switch
19	Green	Magnetic Sensor
20	Black	Door Solenoid
21	Red	LED Lighting (Positive)
22	Red	LED Lighting (Positive)
23	-	NC
24	Red	Head Blower Fan (Negative)

J505 (UMB1)

Pin	Wire Color	Function
1	Black	Model Heater (Negative)
2	Blue	Model Heater (Positive)
3	Green	Support Heater (Positive)
4	Black	Support Heater (Negative)
5	Green	Ground
6	Blue	Ground
7	Purple	TBD, Thermocouple Wiring
8	-	NC
9	-	NC
10	Black	Toggle Limit Switch
11	Grey	X-Axis End of Travel Limit Switch
12	-	NC
13	-	NC
14	-	NC
15	-	NC
16	-	NC
17	White	TBD, Thermocouple Wiring
18	-	NC
19	-	NC
20	-	NC
21	White	Toggle Limit Switch
22	Red	X-Axis Home Limit Switch

J506 (UMB2)

Pin	Wire Color	Function
1	Brown	Ground
2	Red	+5VDC
3	Orange	Extruder Servo Motor Encoder Pin 8
4	Yellow	Extruder Servo Motor Power (Positive)
5	Black	TBD, Thermocouple Wiring
6	Red	TBD, Thermocouple Wiring
7	Purple	Print Bed Limit Switch
8	Grey	Extruder Servo Motor Encoder Pin 6
9	White	Extruder Servo Motor Power (Negative)
10	Black	TBD, Thermocouple Wiring
11	Yellow	TBD, Thermocouple Wiring
12	Black	TBD, Thermocouple Wiring