HP designjet l65500 Manuale Di Servizio

 Troubleshooting

181

To visually access the security relay LEDs, you must open the electrical cabinet doors. The security relay 

is located on the right side.

1.

Transmission of MICCI Bus, always ON, blinking at high frequency.

2.

ON if 24 V arrives to the board. Its color is faint green.

3.

2 LEDs. Signal of PWM of motor. ON when moving the motor.

4.

GPIO 6: encoder, ON when motor moving.

5.

GPIO 7: encoder, ON when motor moving.

6.

GPIO 8: homing sensor. Always ON if sensor is Ok, and BLINKS when sensor is pressed.

1.

 Power LED, ON when 24v 

arrives to the Main Interconnect 

board

2.

 CH1

3.

 CH3

CH1 and CH2 are always OFF 

when the security relay is off.

1

2

4,5,6

3