TM10-3930-660-20 8-21. FORK AUTOLEVELER CIRCUIT BOARD   - TEST/REPLACE (Cont’d) f. Turn off autoleveler control in cab and lower forks to approximately a -6 degree inclination. Observe “Hi B“ LED indicator  (7). The “Hi B“ LED indicator (7) should be illuminated after forks are lowered. g. Turn on autoleveler control in cab and observe “Hi B“ LED indicator (7). The “Hi B“ LED indicator (7) should remain illuminated as forks are raising and go out when forks are level. h. If either LED indicator (6) or (7) remains illuminated when forks are level, fork autoleveler switch needs adjustment. Refer  to  Para. 8-21. i.   Remove level from forks. If neither LED indicator (6) or (7) illuminates during the tests above, check for voltage across “VS^W and “GND” terminals on circuit board (l). If 24 w is not present, wiring supplyin9 power to board (1) is open. If voltage is present across “VS” and "GND” terminals, and neither LED indicator illuminates, the autoleveler switch and/or circuit board (1) is defective. 8-47