
- 7 -
4 TROUBLESHOOTING FLOWCHART
1 The power source can not be turned on. (The POWER lamp does not light.)
• Check the connection between Transformer and Power & Control Board and Driver
Board and Operation panel.
• No Be sure the connection.
▼
• Yes Is Fuse (F1) on Filter PCB blown out?
• Yes Replace Fuse (F1).
▼
• No Are the signal level between 1-pin and 8-pin of CN1 on Power & Control Board,
29 Vac, between 3-pin and 6-pin, 8 Vac, and between 4-pin and 5 pin, 10 Vac?
• No Replace Transformer.
▼
• Yes Is the voltage level at VCC (1-pin) of Q6 of the Power & Control Board, +8V?
• No Is fuse (F1) on Power & Control Board blown out?
• Yes Replace Fuse (F1)?
▼
• No Replace D6, D7, D8 and D9 of the Power & Control Board.
▼
• Yes Is the voltage level between one side and the other of C25 of the Power &
Control Board, +5V?
• No Replace Q6 or TR6 of the Power & Control Board.
▼
• Yes Is +5V supplied for CN3 of the Driver board?
+5V (CN3 – 3 pin)
0V (CN3 – 2 pin)
• No Check +5V supplied for the Driver board or replace Driver board?
▼
• Yes Is +5V supplied for CN1 of the operation panel board?
+5V (CN1 – 5 pin)
0V (CN1 – 6 pin)
• No Replace a cable in the operation panel or replace the operation panel.
▼
• Yes Replace D2 or R2 on the operation panel.
Kommentare zu diesen Handbüchern