West·Bond's FQA: "A" Series Machines

This series includes: 7200A, 7200AA, 7200AB, 7200AD, 7200AR, 7300A, 7316A, 7316A-27, 7400A (all dash numbers), 7416A, 7440A, 7443A, 7600A, 70PT, 40ST, AND 70PT-A1.

Top Frequently Asked Questions:

Question: What kind of maintenance does my West·Bond machine require?

Answer: Virtually none. West·Bond equipment is designed to provide many years of hassle free operation. However, general cleanliness of the equipment is promoted and the following suggested actions will effect this end.

Wipe down the exterior of the machine with a soft, damp cloth. Chemical cleaners (such as Windex or 409) can be used on the painted surfaces only.

Unplug the machine from the wall and remove the covers. Inspect for any dust or debris (such as gold or aluminum wire) and remove using a small vacuum or light air pressure. Remove the printed circuit boards, inspecting both the contacts on the board and the edge connectors mounted on the machine base. Clean the board contacts with a lint free cloth and rubbing alcohol. Clean the edge connectors with a small vacuum or light air pressure.

Locate the ball joint assembly. This is a small ball covered with grease that makes the connection between the tooling plate and the manipulator arm. Ensure this is well lubricated. If necessary apply a small amount of light grease to the ball. Replace this assembly if the ball looks cratered or worn.

At the rear of the tooling plate is a single shaft that rides in a brass rod end bearing. Clean this periodically with a clean, lint free cloth and isopropyl alcohol. Then apply a single drop of non-detergent light machine oil to each side of this rod end bearing. Work the manipulator arm back and forth coating the rod end shaft in a thorough but light film of oil.

Load Cell Calibration. Remove the machine covers. With the power on, lift the transducer to raise the outrigger arm off of the load cell. The force display in the front panel should read "-000". If the display offset reads +004 grams or higher when the head is lifted, the ultrasonics will not fire. To obtain "-000" adjust R1 (located on PCB #6767) counter clockwise to decrease or clockwise to increase.

Note! The ball joint and the rod end shaft are the only points on an "A" series machine that require lubrication.

Question: Are there any special precautions I should take when moving my West·Bond equipment?

Answer: ABSOLUTELY! Your West·Bond machine came with special shipping blocks, screws, warning tags, and foam just for this purpose. Refer to your owners’ manual for details on installation of these blocks and other shipping procedures. If you have misplaced these blocks contact West·Bond and order a replacement set.

Note! Moving or transporting your West·Bond machine without first taking the appropriate can cause serious damage. If in doubt, stop and call West·Bond technical support. They will be happy to guide you in the proper care and protection of your West·Bond equipment.

Question: Why is my K~Sine microscope fluorescent illuminator not working?

Answer: Bad Inverter - Verify that the 12 volt power supply is still operational and supplying the correct voltage. For specific 12V test points on your machine refer to the system power schematic located in the users manual, included with your machine. Next turn the machine off and unplug the blue and black wires, running from the inverter module, at their respective connectors. Hook up a voltmeter, taking care not to let the wires touch each other or short to ground- when the power is turned on, an AC voltage of 495 should be seen across the two wires. If this voltage is indeed seen, turn the power off and plug in a known good illuminator. Reconnect the blue and black inverter wires in such a way that a voltmeter can still be used to measure their potential difference. When the power is turned back on, 26VAC should been seen across the two wires once the 495VAC startup voltage has cycled and successfully turned on the fluorescent bulbs. If this cycling from 495VAC to 26VAC is not seen, then the inverter assembly needs to be replaced.

Light Bulbs - The light bulbs may have burned out. Either plug the light into a machine with a known good illuminator inverter, or try a known good illuminator on the afflicted machine. If the bulbs are indeed the problem, call West·Bond and order replacements.

Question: Load Cell Calibration?

Answer: Turn machine power on and remove the cover on the left side of the machine. Locate the P/N 6767 PCB board on the left side of the machine. Lift the head assembly off of the load cell contact point. Adjust R1 on the 6767 board until the display reads -000. Gently set the head down against the load cell and adjust the tare weight (spring force nut located just behind the tool head) to 50 grams. Using a calibrated weight set, hang a 100-gram weight directly on the end of the tooling head. Adjust R2 (offset) on the 6767 board until the display reads 150. Remove the weight and verify the load cell calibration by checking to see that the display now reads 50 grams. Double check using a 20-gram weight set atop the tooling head- the display should read 70 grams. Adjust R2 accordingly, being sure to check the calibration after every adjustment. This is a delicate calibration procedure that requires a bit of finesse on the operator’s part. Finally, hook an oscilloscope up to U2 pin 4, and adjust R3 to obtain a 35ms low-going pulse.

Question: Why are both the channel 1 and channel 2 lights on and why is my motor not running when this happens?

Answer: The loop button is stuck down. Turn power to the machine off and slide the platform projection off the table so you can gain access to the switch mechanism underneath. Remove the switch assembly and then remove the button. Clean both the button and the hole thoroughly. Ensure the button slides freely in its hole and reassemble.

1551 S. Harris Court,Anaheim, CA 92806
Phone: 714.978.1551 Fax: 714.978.0431