Lincoln Electric INVERTEC 170S Service Manual page 38

PLANAR TRANSFORMER AND MAIN BOARD REMOVAL AND REPLACEMENT PROCEDURE
C
D
E
Figure 2
REMOVAL PROCEDURE (continued)
9. Disconnect the connector J4 from main board, ref. A Figure 1
10. Disconnect the two fan wires from the connector J3, ref. B Figure 1
11. Disconnect the flat cable from connector J1, ref. C Figure 1
12. Disconnect the hall effect proble connector J2 from main board, ref D Figure 1
13. Disconnect the two thermal sensor wires from connector J5, ref E Figure 1
14. Remove the two spacers that are used to fix the planar transformer, using the 6mm nutdriver, ref. F
Figure 2
15. Remove the 4 screws that fix the output diode module to the main board, ref. G Figure 2
16. Remove the two mains wires from the EMC filter, ref. H Figure 3
17. Remove the 5 screws that fix the main board to the central frame, ref. I Figure 4
18. Remove the main board
For the re-assembly operations, make the previous steps in the reverse order.
PAY ATTENTION ! Apply a torque of 1,5Nm on the 4 output diode module screws during re assembly operation
DO NOT USE CORDLESS SCREWDRIVERS FOR THE POWER MODULEs.
DISASSEMBLY OPERATIONS
(CONTINUED)
B
Figure 1
F
G
F
Page37
ELECTRIC SHOCK
CAN KILL
A
I
WARNING
Disconnect input power before servicing.
Do not operate with covers removed.
Do not touch electrically live parts.
Only qualified persons should install, use
or service this equipment.
H
Figure 3
Figure 4