IJ4000 Impulse Jet
Appendix B: Theory of Operation
5765-018 Operations Manual Rev J
Page 62
IJ4000 Print Head Interface PCB
Test Points:
TP1:
5VDC.
TP2:
3.3VDC.
TP3:
2.5VDC.
TP4:
GND.
TP5:
(FPGA) PROGRAM; pulses low to initiate FPGA programming.
TP6:
(FPGA) INIT; goes LOW to indicate an FPGA programming error.
TP7:
(FPGA) DONE. LOW when the FPGA is being programmed. High when FPGA programming is complete.
TP8:
SMART-IDS error signal, active low.
TP9:
Print head vacuum signal, active high.
TP10:
SMART
-
IDS ink low signal, active low.
TP11:
Print head pump signal, active high.
TP12:
SMART
-
IDS ink out signal, active low.
TP13:
Print head at temperature signal, active low.
TP14:
SMART
-
IDS vacuum signal, active low.
TP15:
Print head ink out signal, active high.
TP16:
SMART
-
IDS pump signal, active low.
TP17:
DC power in (24V).
TP18:
Print head CLOCK signal.
TP19:
Print head DATA2 signal.
TP20:
Print head DATA signal.
TP21:
Print head LATCH signal.
TP22:
PHOTOSENSOR signal, active high.
TP23:
External ENCODER signal.
TP16 TP12 TP14
J1
J2
TP5
TP7
U4
U6
TP17
TP4
TP10
TP18
TP9
TP11
TP20
TP21
TP19
TP13
TP8
TP15
TP23
TP22
J5
J3
P1
P2
P3
TP3
TP2
TP6
TP1
U2
IMPULSE JET
INTERFACE BOARD
HIGH RESOLUTION
INTERFACE BOARD