Fuse is located in     Fuse Box. Release ratchet 
clamp located on the top and bottom of the 
     Fuse Box and pull it out to change the fuse. 
(Fig. 8)
When the fuse come down, Insert new fuses into 
the      Fuse box and then push the      Fuse box 
into the original position until hearing a sound 
click.
- Fuse: Order Code (120V) : 1202225010 (T2.5AH 250V)
- Fuse: Order Code (230V) : 1202216010 (T1.6AH 250V)
The unit is provided with a maintenance mode to check the functionality of the switches, 
display, foot pedal, motor, etc. While pressing      Turbine/Motor Selector Switch and      Auto 
Cruise Switch at the same time, turn on the Power Switch and keep pressing the button until 
beeps are made (for about 2 seconds). At this time, turning the volume from the minimum 
position in order displays "oP", "dP", "HL", "Pd" and "in", allowing the following checks. To 
release Maintenance Mode, turn Power Switch off and switch on again. 
 
(1) "oP": Switch check
 (operation check) 
Press the switches on the panel, and the right and/or left lamps will light to check to see if 
the switches operate normally. 
 
(2) "dP": Display check 
Press      Forward/Reverse Selector Switch, and the lamps will light one by one to check to 
see if they operate normally. To cancel this check, press      Forward/Reverse Selector Switch 
again. 
10 
9 
9 
8 
10 
15 
15
15
15 
Fig.8 
9. Replacement of Fuse 
10. Maintenance Mode 
CAUTION 
Fuse is burned out when a short circuit occurs or when over-voltage is flowed into the 
primary current source. If the cause is uncertain, return the product to an authorized 
NSK’s service shop for inspection.