Epson EMP-S4, Руководство по обслуживанию

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2-7
EMP-S4
SEIKO EPSON Revision:B
2.2.1 Lamp Assy.
The Lamp Assy. is comprised of the Lamp (170W) and Ballast Power Supply Connector. The
Ballast Power Supply Connector is used to supply the AC voltage from the ballast unit for
driving the lamp. The lead wires are connected to the lamp.
The lamp is fastened to the bottom of the projector body with 2 screws. The lamp is a
consumable part, and is to be replaced as the luminance of the Lamp Assy. declines over time
as the lamp is used. Maximum luminance is obtained when a new lamp is first installed. After
approximately 1,900 hours at high brightness or 2,900 hours at low brightness, the luminance
will drop by approximately 50%.
Figure 2-6.
The Lamp may be replaced at any time. Replace the Lamp Assy. before the full 1900-hour
period (at high brightness) or 2900-hour period (at low brightness) has been reached if it seems
that the luminance of the lamp is unacceptable during actual use.
The cumulative operating time for the Lamp Assy. is stored in IC104 (I/F Controller) on the
MA board. When the lamp is replaced, the lamp timer should be reset using the Reset Lamp
Timer function in the Reset menu. Check the Lamp Time in the About menu to confirm that
the timer has been correctly reset.
Figure 2-7. Lamp Assy. Control Circuit
Ballast Power Supply Connector
CN2000 CN500
IC104