Brother International DB2-B737 Network Users Manual - English - Page 27

CHECKING THE MOTOR 1 Motor Torque thermister Motor M Approx. 1.2 ohm Black Black Blue 6 3 5 2 Coil Approx. 0.3 ohm 4 1 Red Yellow Black Yellow Revolution thermister 2 B rake Brake coil approx. 8 ohm 2 1 1. Remove the motor code (6P connector) from the connector part of the control box. 2. Measure with the tester set in the resistance range as follows. •If the tester reads approx. 2-3 ohm at any position between 4 (red) and 6 (black) with the resistance range xl, it is normal. It should read approx. 2-3 ohm at each position while turning the motor pulley slowly. If it reads approx. 10 ohm or more at some positions, it is out of order. However, if the pointer swings to much extent while turning the motor pulley, be sure to measure after stopping the pulley. •If the tester reads approx. 5 K-40 Kohm when measured at any position between 3 (black) and 6 (black) with the resistance range xl, it is normal. •If the tester reads approx. 5 K-40 Kohm when measured at any position between 1 (yellow) and 2 (yellow) with the resistance range xl, it is normal. 1. Remove the brake code (2P connector) from the connector part of the control box. 2. Measure with the tester set in the resistance range as follows. •If the tester reads approx. 7-9 ohm when measured at any position between 1 (black) and 2 (black) with the resistance range xl, it is normal.