Micron Technical Reference V9 Volume 4.pdf - 第41页

STINGER REPLACEMENT PROCEDURES Chapter Issue 2, Aug 14 Technical Reference Manual 38.17 trical isolator . 16. Switch the mains isolator ON . 17. When requested, press the System button. 18. Run a calibrated test product …

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STINGER
REPLACEMENT PROCEDURES
38.16 Technical Reference Manual Chapter Issue 2, Aug 14
42. Select Dispense Sweep to run the calibrated test product.
43. Ensure that deposit placement accuracy and volume are acceptable.
Laser Sensor
Replacement
1. Isolate the printer from the pneumatic supply and lockout the mains electri-
cal isolator.
2. Open the printhead front cover.
3. If fitted, remove the screen.
4. Pull the camera carriage to the front of the printer.
5. Slacken off and remove the two M4 x 50 socket head screws that hold the
magnet plate to the carriage.
6. Remove the magnet plate.
7. Remove the two M3 x 16 socket head screws that hold the laser unit to the
dispense body.
NOTE
The camera has been omitted for clarity.
8. Remove the laser sensor.
9. Unscrew the connector lock ring and remove the sensor from the connector.
10. Screw the connector lock ring into the replacement laser unit.
11. Align the assembly with the mounting holes and fix it using the two socket
head screws. The laser is in a fixed location and does not need positioning.
12. Refit the magnet plate.
13. Load the screen.
14. Close the printhead front cover.
15. Reconnect the printer to the pneumatic supply and unlock the mains elec-
Magnet Plate
Laser Sensor
Dispense Body
Connector
Socket Head Screws
STINGER
REPLACEMENT PROCEDURES
Chapter Issue 2, Aug 14 Technical Reference Manual 38.17
trical isolator.
16. Switch the mains isolator ON.
17. When requested, press the System button.
18. Run a calibrated test product (next section in this chapter) to calibrate
offsets.
Auger Drive Belt
Replacement
A pulley belt, located under the top cover of the unit, drives the auger.
1. Isolate the printer from the pneumatic supply and lockout the mains electri-
cal isolator.
2. Open the printhead front cover.
3. If fitted, remove the screen
4. Pull the camera carriage to the front of the printer.
5. Remove the two M2.5 x8 countersunk head screws, which secure the cover.
6. Remove the cover.
7. Slacken off the four M2.5 x 5 cap head screws of the drive pulley mounting.
8. Move the motor drive pulley to the front.
9. Lift the drive belt clear of the driven pulley.
10. Replace the drive belt; tension the belt by pushing the drive pulley to the
rear. Ensure that it sits in the teeth of the driven pulley and does not slip.
Make sure that the motor does not move when tightening the screws.
11. Tighten the four cap head screws.
12. Recheck the belt operation. Movement should be smooth with no resist-
ances.
Drive Belt
Cover
Cap Head Screws (4)
Drive Pulley
Driven Pulley
STINGER
REPLACEMENT PROCEDURES
38.18 Technical Reference Manual Chapter Issue 2, Aug 14
13. Refit the cover.
14. Load the screen.
15. Close the printhead front cover.
16. Reconnect the printer to the pneumatic supply and unlock the mains elec-
trical isolator.
17. Switch the mains isolator ON.
18. When requested, press the System button.
19. Run a test product to check functionality.
Z - Axis Motor
Replacement
The z-axis motor is mounted to the mounting plate at the rear of the assembly.
Two linear guides are mounted on the plate with the bearing section mounted
on the dispense body. In operation, the motor lifts the dispense body until it
reaches the end stop. The auger assembly is housed in the dispense body. The
z-motor assembly provides the various height elements of the stinger operation.
1. Isolate the printer from the pneumatic supply and lockout the mains electri-
cal isolator.
2. Open the printhead front cover.
3. If fitted, remove the screen.
4. Pull the camera carriage to the front of the printer.
5. Remove the two M2.5 x 8 countersunk head screws, which secure the cover.
6. Remove the cover.
7. Remove the syringe assembly so that it out of the way.
8. Remove the two M3 x16 cap head screws that hold the level sensor in place.
9. Remove the level sensor and place it is out of the way.
Cover
Syringe Assembly
Linear Guide Bearings
End Stop
Mounting Plate
Z-Axis Motor
Level Sensor
Dispense Body
Actuator Plate