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8-3

 

Flowchart of Troubleshooting 

 

Check the items from the top of the following list. (Description of the item is referred to Circuit diagram in 

Fig. 6-1

.) 

After corrective action, return to the start of Troubleshooting and re-check again. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Symptom 

Cause 

Corrective action 

 

 

 

 

No 

Controller is broken. 

Replace Controller. 

Does Tester indicate 0.7V ~ 0.9V? 

When tester cannot be prepared, go to “Yes”.   

Yes 

The machine 

works properly. 

Yes 

No 

Controller is broken. 

Replace Controller. 

No 

Connectors are in 

incomplete connection. 

Replace Controller. 

Rotation speed 

can be changed. 

Forward/ Reverse 

rotation are OK. 

Lead wires are broken. 

Check Lead wires, or 

replace them. 

Switch is broken. 

Replace Switch. 

No 

Connectors are in 

incomplete connection. 

Replace Controller. 

LED job light are 

on. 

Lead wires are broken. 

Check Lead wires, or 

replace them. 

LED circuit is broken. 

Replace LED circuit. 

Switch is broken. 

Replace Switch. 

Yes 

Yes 

Switch is broken. 

Replace Switch. 

Terminal is broken. 

Check Terminal, or replace 

it. 

Controller is broken. 

Replace Controller. 

No 

No 

Connectors are in 

incomplete connection. 

Replace Controller. 

LED job light are 

on. 

Lead wires are broken. 

Check Lead wires, or 

replace them. 

Switch is broken. 

Replace Switch. 

LED circuit is broken. 

Replace LED circuit. 

Controller is broken. 

Replace Controller. 

Rotor is broken. 

Replace Rotor. 

Stator is broken. 

Replace Stator. 

No 

Yes 

Rotor is rubbed to 

Stator. 

Yes 

Yes 

Motor runs when the 

machine is switched on.   

In case of running 

inconstantly, go to “No”. 

Yes 

No 

Controller is broken. 

Replace Controller. 

The machine shows same symptom in spite 

of the above corrective actions.   

LED indicator 

lamps are on. 

LED indicator 

lamps are on. 

 

 

 

 

 

 

 

 

 

 

 

18 / 19 

Summary of Contents for DTD170

Page 1: ...100 1 100 Max tightening torque 3 N m kgf cm in lbs 175 1 780 1 550 Electric brake Yes Variable speed control by trigger Yes Reverse switch Yes LED job light Yes Weight according to EPTA Procedure 01...

Page 2: ...ing 9 5 2 2 Assembling 9 5 3 Anvil N 11 5 3 1 Disassembling 11 5 3 2 Assembling 11 5 4 Hammer section 12 5 4 1 Disassembling 12 5 4 2 Assembling 13 6 Circuit diagram 14 6 1 How to disassemble Stator 1...

Page 3: ...212 A Tip for retaining ring pliers use with 1R003 1R212 B Plate set with screws 1R223 Torque wrench shaft 20 90N m assembling Hammer case complete 1R224 Ratchet head 12 7 use with 1R223 1R232 Pipe 30...

Page 4: ...ng screws and then remove Housing R Fig 5 1 1 1 1 Remove two Bind PT 3x16 Tapping screws and remove Rear cover Fig 5 1 1 2 2 Mount 1R016 to the machine and fix it with Vise Remove Rotor by prying it o...

Page 5: ...ammer case complete Note To remove Hammer case cover Hammer case complete must be removed from Housing L in advance Fig 5 1 1 5 5 Remove Bumper with a small slotted screwdriver Fig 5 1 1 4 4 Remove Ha...

Page 6: ...2 50 with Vise and two 1R040 and set Bearing box complete to Socket 32 50 Socket 30 78 Nut spinner handle Hammer case complete Fig 5 1 1 9 9 Hammer case complete section can be disassembled as shown b...

Page 7: ...se with 1R224 and Socket 30 78 Fig 5 1 2 2 3 Fix Socket 32 50 with Vise and two 1R040 and set Bearing box complete to Socket 32 50 Projection Thin washer 15 Note Be careful not to lose it Internal gea...

Page 8: ...cover to Hammer case complete as shown below U shape notch Stopper portion Projection Hammer case cover Groove on Bumper Groove on Hammer case cover Fig 5 1 2 7 8 Assemble Housing R to Housing L with...

Page 9: ...tor When handling or storing multiple Rotors be sure to keep a proper distance between Rotors as shown in Fig 5 2 2 1 Because Rotor has strong magnetic force failure to follow this instruction could r...

Page 10: ...projections on Housing L Fig 5 2 2 4 4 Make sure that Stator is properly assembled to Housing L Fig 5 2 2 5 5 Set the convex portion of Switch to the concave portion of F R Change lever Housing L Stat...

Page 11: ...1 2 3 Remove Ring spring 11 while checking the following points Press the top of Bit sleeve with a thumb so as not to pop out Compression spring 13 Expand the end gap of Ring spring 11 with 1R003 1R2...

Page 12: ...rtion with the top of Cam grooving on Spindle by turning 1R045 5 Remove two Steel balls 5 6 with Tweezers or Magnetic screwdriver 6 Turn 1R045 clockwise to release Hammer case section 1R045 Hammer Spi...

Page 13: ...embling Before assembling Steel balls 3 5 check the following points Twenty four Steel balls 3 5 are put in the groove of Hammer as shown below There is a gap equivalent to the size of one Steel ball...

Page 14: ...with lock 187 t 0 8mm Sensor board 1 Remove Sensor board from Stator by removing three PT 2x6 Tapping screws with No 1 Phillips screwdriver 2 Remove three M3x6 Flat head screws with No 1 Phillips scr...

Page 15: ...e complete Boss LED circuit Rib A Rib B F R Change lever Cross section of A Projection of Hammer case complete Hammer case complete Area 1 Area 2 2 Do not put the lead wires of LED circuit on Area 1 a...

Page 16: ...res on Switch Pass the lead wires of Stator and LED circuit between the rib D and rib E Rib E Rib D Switch LED circuit Controller Terminal Do not put any Lead wires on these Ribs Put the controller le...

Page 17: ...ing 10 times F R change lever Switch plate Variable speed control trigger 8 2 Test for recognizing the short circuit of FET Field Effect Transistor on controller Trouble on Controller can be checked w...

Page 18: ...lace Controller LED job light are on Lead wires are broken Check Lead wires or replace them LED circuit is broken Replace LED circuit Switch is broken Replace Switch Yes Yes Switch is broken Replace S...

Page 19: ...ping screw 1 1 1 3 8 2 Rear cover Housing R L Bind PT 3x16 Tapping screw 1 1 1 3 2 3 Controller terminal unit Stator M3x6 Flat head screw 0 4 0 6 3 4 Controller print board Stator PT 2x6 Tapping screw...

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