![](/images/new-backgrounds/1314085/314085179x1.webp)
Return to Section TOC
Return to Section TOC
Return to Section TOC
Return to Section TOC
Return to Master TOC
Return to Master TOC
Return to Master TOC
Return to Master TOC
TROUBLESHOOTING & REPAIR
MAIN IGBT BOARD REMOVAL & REPLACEMENT (continued)
FIGURE F.27 – MAIN IGBT BOARD LOCATION
MAIN BOARD
PROCEDURE
1. | Remove input power to the | 6. Using a 7mm nut driver, label and disconnect | |||
leads RV1, RV2, RV3, RV4, RV5, RV6 & RV7. | |||||
|
|
|
| ||
2. | Using a phillips head screwdriver remove the | See Figure F.28. | |||
| |||||
| case wraparound cover. |
|
| 7. Using a phillips head screwdriver, remove the | |
|
|
|
| ||
3. | Perform the Input | Filter | Capacitor | ||
main board. Note washer positions for | |||||
| Discharge Procedure detailed earlier in this | ||||
| replacement. See Figure F.28. | ||||
| section. |
|
| ||
|
|
|
| ||
4. | Locate the main IGBT board. | See Figure | 8. Carefully maneuver the main board out of the | ||
machine. Replace. | |||||
| F.27. |
|
| ||
|
|
|
| ||
5. | VERY CAREFULLY, label | and | disconnect | 9. Maneuver new board into its proper location | |
and secure to machine using the | |||||
|
|
|
|
plugs CN1, CN2, CN3, CN4 & CN5. See | phillips head screws previously removed. | |
Figure F.28. | ||
|
NOTE: All ribbon cable connections are secured by a small amount of RTV on the outside surface to keep the connections secure.