Troubleshooting
Model: T645
Malfunction: Soft key malfunction
Circumstance: Press display board keys. There is no reaction,
or keys operate continuously.
Possible causes: 1. keypad are not connected properly
at the bridge board.
2. Soft keys are bad.
Troubleshooting: 1. Inspect the keypad connection
at the bridge board.
2. Replace the keypad.
3-4-2
Bridge board
Display board
Keypad
Bridge board
keypad
Keypad connection
Connection to Bridge 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...
