Liquid crystal panel 
ON/OFF key 
PROGRAM key 
DOWN key 
POWER key 
UP key 
SELECT key 
<Operation Panel> 
English
16  17 
(4) Preparatory Operations 
1. Hold down the POWER key for more than one second 
to turn on the power. 
2. Keep holding down the PROGRAM key until program 
No. suitable for file to be used is displayed. 
3. When changing the set value of speed, torque, gear 
ratio or auto reverse, press the SELECT key, select the 
setting item and press the UP/DOWN key to change. 
(5) Operation 
If you press the ON/OFF key briefly, the motor handpiece 
starts. If you re-press the key, it stops. (Alternate 
operation) 
If you hold down the ON/OFF key for more than one 
second, the motor handpiece starts while the key is 
pressed. If you release the key, it stops. (Intermittent 
operation) 
 
    Auto Reverse Function 
Auto reverse setting can be changed by pressing the SELECT key for one second or longer 
while the motor handpiece stops. As the auto reverse mark flashes while the SELECT key is 
kept pressed, press the UP/DOWN key to adjust it. 
 
: Auto Reverse 
 
: Auto Stop 
 
: Auto Reverse OFF (flashes while the SELECT key is kept pressed, and goes out 
when it is released)  
 
The alarm will sound when it becomes a value of half of a torque limit set up during motor 
handpiece rotation, and the alarm will change near the torque limit value. (Load alarm) When it 
continues applying a load and it exceeds the torque limit value you can select mode from the 
following three modes. 
 
 
• When the battery charge goes down, the actual load may not reach the preset torque 
limit value. In this case this auto reverse function will not be activated. 
• If a load is continuously applied to the motor handpiece, it may automatically stop to 
prevent overheating. In this case, leave the motor handpiece for a while until it cools 
down. 
• If the ambient temperature is low, the alarm may sound when the motor handpiece 
rotates, however, this is not a failure. If the alarm does not stop sounding even when 
the ambient temperature increases, clean the contra angle head and perform 
calibration. (Refer to 6 (3) Calibration) 
CAUTION 
The GEAR RATIO key is fast-forwarded, when it is 
continuously held down. 
NOTICE 
Reverse rotation  
when load continues,  
forward rotation  
when load is removed 
Load lower than 
the set torque limit value 
Load higher than
the set torque limit value
 
AUTO REVERSING 
 
The handpiece stop that it reaches for the loaded value, the file rotates in reverse. When a load 
is removed, the file returns to normal rotation (forward rotation) automatically 
Reverse rotation 
when load continues,  
stop when load is removed 
Load lower than 
the set torque limit value 
Load higher than
the set torque limit value
Forward rotation Returns to forward Reverse rotation  
Forward rotation  Stop Reverse rotation 
Fig. 7
AUTO STOP
The motor handpiece starts in reverse. When a load is removed, the motor handpiece stops. If 
you want it to rotate (forward-rotate) again, re-press the ON/OFF Key or re-step.
 
AUTO REVERSE OFF 
 
The motor handpiece stops without reverse rotation. If you want it to rotate (forward-rotate) 
again, re-press the ON/OFF Key or re-step. 
Fig. 8
Fig. 6