GSE 350IS / GSE 355IS Service Manual - Advanced Weigh ...

Model 350 I.S. Keypad Removal1. Remove the main board. Follow the instructions for Main Board Removal.2. Remove the four lock nuts from the keypad studs. Also remove the two plasticspacers from the keypad studs.3. Carefully remove the keypad from the front enclosure.Model 355 I.S Keypad Removal1. Remove the main board. Follow the instructions for Main Board Removal.2. There is a steel mounting plate covering the keypad. This must be removed inorder to extract the keypad. Remove the four lock nuts holding on the platewith a 7 mm nut driver.3. Carefully remove the mounting plate from the enclosure at set aside. Be surenot to remove the plastic standoffs from the plate.4. The keypad is fastened to the enclosure by six lock nuts. Also there are fourmetal standoffs which provide space for the mounting plate that was removedin the previous step. Remove the four standoffs and set them aside.5. Use a 7 mm nut driver to remove the nuts securing the keypad. The three nutson the bottom of the keypad are not accessible with a nut driver. Use a 7 mmwrench, small adjustable wrench or 7 mm socket on a small ratchet.6. Carefully remove the keypad from the front enclosure.Model 350 I.S. Keypad Installation1. Place the keypad over the keypad studs on the front enclosure.2. Use a 7 mm nut driver to fasten the keypad to the front enclosure with four locknuts. Also install the two plastic spacers. Refer to Figure 8.1 for lock nut andspacer positions. Be sure not to over tighten the lock nuts; 2 lb in maximum.3. Connect the keypad cable to the main board. Reinstall main board (refer toMain Board Installation).4. Reinstall the back panel with two tamper proof Phillips head screws and sixPhillips head screws. Be sure not to over tighten.Model 355 I.S. Keypad Installation1. Place the keypad over the keypad studs on the front enclosure. Make sure thekeypad cable connector is facing the left side of the enclosure.2. Secure the keypad by using a 7 mm nut driver and install one lock nut on thetop center keypad stud. Install one lock nut on the left side and another locknut on the right side. Refer to Figure 8.2 for positions of lock nuts and spacers.3. With your fingers install the remaining three lock nuts over the keypad studs onthe bottom of the keypad.4. Use a 7 mm wrench, small adjustable wrench or 7 mm socket on a smallratchet to tighten the three lock nuts. Be sure not to over tighten; 2 lb inmaximum.138Model 350 I.S. and Model 355 I.S. Service Manual