HP Designjet 3D Service Manual page 146

Pin Signal
P505-6 GND
P505-21 MODEL_TOGGLE_IN
P505- 1 0 SUPPORT_TOGGLE_IN
P505- 1 1 XEOT_IN
P505-22 XHOME_IN
P506-7 SUBSTRATE_DETECT_IN
P506-2 SUBSTRATE_CLK_OUT
P506-8 HD_MTR_PH0_1
P506-3 HD_MTR_PH1_1
P506-9 HD_MOTOR_OUT_1
P506-4 HD_MOTOR_OUT_2
P506- 1 0 CHAMBER_TEMP_ALARM
P506-6 SUPPORT_TC
P506- 1 1 MODEL_TC
P506- 1 2 GND
P506- 1 GND
P506-5 GND
Signal Information
Signal ground
Toggle Sensors
Toggle in model position. In position = 0
V
Toggle in support position. In position =
0 V
X Axis Sensors
X EOT sensor. Sensor is NC = 5VDC.
Open = 1.8VDC. See TP18 and DL3 on
PDB
X BOT sensor. Sensor is NC = 5VDC.
Open = 1.8VDC. See TP19 and DL4 on
PDB
Substrate Detect
Up position = 5 V. Signal in normally
high (in up position).
Square wave that drives the opto sensor
Head Motor Encoder
Encoder signal (phase 1 from head
drive motor encoder)
Encoder signal (phase 2 from head
drive motor encoder)
Head Motor Power
Power to head drive motor - 12 VDC
Power to head drive motor - 12 VDC
Over Temp Alarm
Chamber/Head area is over temp
(+100C) Chip located on T/C Amp
Board
Normal = 0 V. Over temp alarm = +4 V
T/C Signals
Support T/C signal (0.010 = 1 C).
Signal amplified on T/C Amp Board
Model T/C signal (0.010 = 1 C). Signal
amplified on T/C Amp Board
Signal ground
Signal ground
Signal ground
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