HP designjet l65500 Servicehandbuch
Tr
ou
bles
hooting
Troubleshooting
181
Security Relay LEDs
To visually access the security relay LEDs, you must open the electrical cabinet doors. The security relay
is located on the right side.
PPS Remote Controller Board LEDs
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