BC2 Barcode Sensor Instructions These instructions cover replacing an OTBC-0140 with a BC2 barcode sensor on a BCR-1000 Rev. 2, 3, and 4 boards. The BC2 will not physically fit a Rev. 5 board. Installation
REAR
1. Remove the OTBC-0140 and its support hardware. Suck the solder from the holes on the board. 2. Install the BC2 on the board. Keep it tight to the board. There are two sets of holes for the barcode sensor. Be sure to use the holes towards the back of the board. 3. Install a wire jumper (circled in white in the photos).
FRONT
Pot Adjustment The photos show single-turn pots. Older boards will have multi-turn pots with a small brass adjuster on the side. CW rotation on the single-turn pots is the same as CW rotation on the multi-turn pots. The rear pot controls the brightness of the sensor’s emitter. It is usually set to the full CW position. 1. Set the jumpers (circled in red in the photo) for holes-only operation (rear jumper to the right, front jumper to the back). Change the appropriate option in the logic board for holes-only operation (option 30 = 1 on an AP-100 logic board; option number on BJ-100 depends on firmware version). 2. If using an oscilloscope, check the signal on the white wire in the barcode cable while feeding tickets. It should be a good square pulse. If it is shortened or pointed instead of square, adjust the pot to less than full CW. 3. If not using an oscilloscope, run tickets to verify that the board counts correctly. If it doesn’t, adjust the pot to less than full CW and re-test. The front pot controls the gain of the signal amplifier. It is usually set between 1/4 CW and full CW. A good starting point is the middle of its range. 1. Set the jumpers (circled in red in the photo) for barcode operation (rear jumper to the left, front jumper to the front). Change the appropriate option in the logic board for barcode operation (option 30 = 0 on an AP-100 logic board; option number on BJ-100 depends on firmware version). 2. If using an oscilloscope, check the signal on the exposed pin of the front jumper. It should be set so that the signal between the hole and the barcode is just barely clipped at the top end. 3. If you don’t have an oscilloscope, use trial and error to adjust the pot to get reliable operation. Start at 1/4 CW and move CW in small steps. Test at each step until you get reliable operation. This is position A. Then start at full CW, move CCW in small steps, and test at each step until you get reliable operation. This is position B. Put the pot half-way between position A and position B. Test for reliable operation.
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