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LS 3070 Product Reference Guide: Interface Guide
IBM 3653 Installation
1. Be sure the IBM 3653 terminal is powered-down. Open the door over the
ribbon cartridge as shown in Figure 5-13.
2. Loosen the right side panel screw (see Figure 5-13). Grasp the right panel
at top of the rear corner; pull out to the side and push back to remove the
panel.
3. Loosen the two screws behind the top of the keyboard cover. Lift and
remove the keyboard cover. See Figure 5-14.
4. From the bottom of the register, slide the cable retaining clips until the
cables are free. From inside the register, pass the base station cable (single
end) through the power cable hole. See Figure 5-15.
Caution
Use extreme care to avoid damaging the connector pins.
5. Loosen the screw on the base of the cash register near the bottom left side
of the card cage. Swing the card cage open by pulling on the left side. See
Figure 5-16.
6. Locate the keyboard connector to check for 5 volts DC. Using a DVM,
connect the GND (-) probe to the screw that holds the keyboard to the
chassis, and connect the POS (+) probe to the 5-volt lead on the TOP ROW
of the keyboard connector, second from right (see Figure 5-17). Turn on the
cash register. If the voltage is less than 5 volts, locate the voltage adjustment
hole on the power supply case behind the card cage (see Figure 5-18). Using
a flexible screw driver, adjust the potentiometer until the voltage is 5.0 to
5.1 volts. Turn off the register and remove the DVM.
7. Route cable under card cage to the front of the register.
8. Locate the keyboard connector on the keyboard and observe its orientation
while removing the connector.
9. Place shrink sleeve over the cable assembly (heat with blow dryer or heat
gun to shrink the sleeving if possible).
10. Insert the polarizing key into the top right corner socket. The polarizing
key is found in the bag containing the tie wrap.