Service manual

Section IV: On-line Processor

Removal and Replacement 3-9

3.4 LUTH Motor Control Board

The following describes how to remove and replace the motor control board.

Tools Required: Phillips screwdriver, needle-nose pliars

Remove:

1. See the removal procedures in Section 3.3, CPU-OLP for exposing the

board.

2. Remove the connectors at X5 and X7. Refer to Figure 3-7.

3. Remove the connectors at X6 and X2. Refer to Figure 3-7.

NOTE: Note the position of the power connectors for replacement.

4. Using a needle-nose pliars, release the two (2) nylon standoffs from the

front of the board. Refer to Figure 3-7.

5. Using a phillips screwdriver, remove the mounting screws at the rear.

Refer to Figure 3-7.

Figure 3-7 The LUTH motor control board.

➀

–Motor control board.

➁

–Two rear mounting screws.

➂

–X5 connector.

➃

–X7 connector.

➄

–Two mounting standoffs.

➅

–Motor board and CPU LED

alignment.

➆

–CPU board.

➇

–Jumper fuses.

➈

–X6 wiring.

➉

–X2 wiring.