Q3224A (8) M104 ON/OFF control signal. [L]: M104 ON [H]: M104 OFF b. Output signals (1) DRV A, A (TUDB to M103) This signal is used to drive the A-phase of the M103. (2) DRV B, B (TUDB to M103) This signal is used to drive the B-phase of the M103. (3) DRV (TUDB to M104) M104 drive signal [L]: M104 ON [H]: M104 OFF M104_CONT (Finisher to TUDB) 2 UNIT EXPLANATION 2 - 7