J.A. Woollam M-2000, Hardware Manual

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M-2000® Hardware Manual ©2023 J.A. Woollam Co. 139
10 Scheduled
Maintenance
The J.A. Woollam Co. M-2000 ellipsometers are low maintenance instruments.
The only required maintenance is to change the lamp(s) as needed and to check
the alignment of the system.
10.1 D2 & QTH Lamps (M-2000D,
DI, U, & UI) in XLS-200
The lamps must be replaced after a certain period of time. As a lamp
approaches the end of its useful life, intensity levels can fluctuate and spectral
intensity can be reduced, both may result in poor or noisy data.
LAMP VENDOR MODEL# COLOR
TEMP. RATING TYPICAL
LIFETIME
QTH ILT L9404 2900°K 2000
hours 3000 hours
D2 Hamamatsu L10804 N/A 2000
hours 3000 hours
Table 10-1. Lamps and typical lifetimes.
Lamp Installation/Replacement
1. Turn off the M-2000 Detector and Lamp Power Supply Module. Allow
lamp(s) to cool for 2 hours.
2. Remove the (2) M3 SHC screws (2.5mm Allen wrench) and remove the
cover on the light source.
3. Put on latex gloves and safety goggles.
Warning: The lamps get extremely hot during operation. Always allow them
to cool adequately before replacing.