Remove And Replace The Ballast/Power Supply Eca - InFocus X1 Service Manual

Remove and Replace the Ballast/Power Supply ECA

The ballast/power supply ECA (520-0114-xx) fastens to the chassis. It converts 100-240 VAC supply
voltage to various low voltage DC levels required internally by the projector. The power supply directly
interfaces with the ballast to control lamp strike and operation. The ballast steps up voltage from the
power supply to ignite the lamp module. The ballast/power supply ECA also interfaces with the controller
ECA to provide DC power and exchange control signals.
Audio amplification and takes place on the ballast/power supply ECA.
Fuses on the ballast/power supply ECA protect against internal shorts or supply surges. The fuses are
not available as FRU parts as a blown fuse usually indicates circuit damage and the need for ECA
replacement.
DANGER Do not attempt to measure the output voltage from the ballast when the lamp strikes. High
voltage produced by the ballast to strike the lamp can ruin test instruments as well as cause
personal injury.
1. Remove the following items:
Lamp module (page 42)
Focus ring (page 30)
Zoom ring (page 30)
Front bezel (page 32)
Rear bezel (page 49)
Top case (page 52)
2. Detach the lamp cable connector from the side of the lamphouse. Squeeze the two tabs on the
side of the connector and slide it rearward through the retainer on the lamphouse.
X1 Service Guide 6