Panasonic MJ-L500STQ Service Manual ▷ View online
9
4.3.
Troubleshooting (excerpts from Operating Instructions)
* The page numbers displayed in the Figures are those of the Operating Instructions. For more information, please read
the Operating Instructions.
the Operating Instructions.
10
4.4.
Motor protection device (excerpts from Operating Instructions)
* The page numbers displayed in the Figures are those of the Operating Instructions. For more information, please read
the Operating Instructions.
the Operating Instructions.
11
5 Troubleshooting Method
5.1.
Parts check/Confirmation/Solution
5.1.1.
Printed circuit board diagnosis
■
Confirmation/Method
<Item 1> Confirm the connection and conducting state of the micro switch.
• Push and press the link, visually check if it can work normally.
• Check its conducting state through the tester.
• Check its conducting state through the tester.
<Item 2> Confirm the state of the circuit breaker.
• Visually check if the straight conducting wire has any defects, such as poor welding and foil fracture.
• Confirm its conducting state through the tester, and check if the wire is broken or has poor contact.
• Confirm its conducting state through the tester, and check if the wire is broken or has poor contact.
<Item 3> Confirm if the fuse (F1: 250V3.15A / F2: 250V10A) blows or not.
• Confirm the conducting state of the fuse through the tester.
■
Solution
• Replace the PCB case unit
5.1.2.
Switch Diagnosis
■
Confirmation/Method
<Item 1> Confirm the connection and conducting state of the switch.
• Turn on and off the power switch, and visually check if it works well.
• Confirm its conducting state through the tester.
• Confirm its conducting state through the tester.
12
<Switch position OFF>
<Switch position ON>
<Switch position REVERSE>
■
Solution
• Replace the switch
5.1.3.
Motor Diagnosis
■
Confirmation/Method
<Item 1> Motor (conductivity confirmation)
• Confirm the conducting state between two terminals (wiring terminals) of the motor.
<Item 2> Motor (running confirmation)
• Turn the spindle of the motor by hand to make sure that the spindle is not fixed.
■
Solution
• Replace the motor
Terminal
Number
1a
1
1b
2a
2
2b
1a
-
-
-
-
-
-
1
-
-
-
-
-
-
1b
-
-
-
-
-
-
2a
-
-
-
-
-
-
2
-
-
-
-
-
-
2b
-
-
-
-
-
-
Terminal
Number
1a
1
1b
2a
2
2b
1a
-
1.4Ω
-
-
-
-
1
1.4Ω
-
-
-
-
-
1b
-
-
-
-
-
-
2a
-
-
-
-
1.4Ω
-
2
-
-
-
1.4Ω
-
-
2b
-
-
-
-
-
-
Terminal
Number
1a
1
1b
2a
2
2b
1a
-
-
-
-
-
-
1
-
-
1.3Ω
-
-
-
1b
-
1.3Ω
-
-
-
-
2a
-
-
-
-
-
-
2
-
-
-
-
-
1.4Ω
2b
-
-
-
-
1.4Ω
-
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