Troubleshooting
Model: T645
Malfunction: The fuse has burnt.
Circumstance: Turn on the unit. The fuse breaks.
Possible causes: 1. Components have an electrical short.
2. Drive board component malfunction.
Troubleshooting: 1. Inspect cable insulation for tears.
2. Remove the power cable and take continuity
readings: There should be no continuity between
AC1 and frame. There should be no continuity
between AC2 and frame.
3. Check components for signs of electrical
shorts. Replace the drive board as a test.
4. Replace the filter as a test.
3-3-1
Filter
SW
FUSE
AC1
AC2
EUP Board
SAC
Drive
Board
Filter
EAC drive board
Summary of Contents for T645
Page 1: ...T645 Repair Manual Electronics Date 2014 1 6 V1 0...
Page 2: ...1 1 Product Illustration 1 1 1...
Page 3: ...1 2 Dispaly T645 1 2 1...
Page 4: ...1 2 Display T645 1 2 2...
Page 8: ...1 4 Connection T645 1 4 2...
Page 13: ...1 5 Cable connections EUp board 1 5 5 From Filter To Drive set To Display LED Keypad...
Page 14: ...1 6 Indicator LEDs T645 Display Board 1 6 1...
Page 15: ...1 6 Indicator LEDs T645 Drive Board 1 6 2 F1 fuse 15A...
