Low Voltage Power Supply - Hughes JVC 220 Service Manual

Figure 4-5. Arc Lamp Power Supply connections.

4.7 Low Voltage Power Supply

Model 220 Service Manual
Chapter 4---Maintenance (Removal/Replacement)
4. Remove and label the cables from the DC OUTPUT
terminal, J74 (see Figure 4-5 for cable connections).
5. Disconnect J71 (AC Input).
6. Disconnect J72 (SIGNAL CABLE).
7. Disconnect J73.
8. Remove the 2 screws at the bottom of the ALPS and
carefully slide it out of the projector.
9. Replace the Arc Lamp Power Supply in reverse order
from above. NOTE: When replacing the cables on the
± terminals on J74, a mechanical pickup tool is very
useful to start the screws.
10. Perform the Arc Lamp Focus, Alignment, and Current
Setting procedures as shown in Section 3.1 and 3.2.
To remove the Low Voltage Power Supply:
1. Remove the front cover.
2. Remove the lower-right-side panel by removing the 5
pozidrive screws securing it.
3. Remove the 2 pozidrive screws securing the EMI
Shield. Slide the shield to the left and remove it.
4. Remove J76 (DC Output) and J75 (AC Input) from the
left side of the Low Voltage Power Supply. NOTE:
4-9