7. Cold mirror assembly
7.1
Introduction
Functionality of the cold mirror
The location of the cold mirror in the light path is between the light source (xenon lamp) and the light pipe. The cold mirror re
fl
ects
the visible light and absorbs the infra red light. Due to this absorbing, a lot of heat is produced. The cold mirror is mounted with the
rear side upon a big heat sink. The fan above the heat sink blows cold air upon the heat sink and cold. The hot air is transported to
the outside of the projector. The cold mirror has three adjustment screws to modify the position of the cold mirror so that the centre
of the light spot is precisely re
fl
ected in the centre of the integration rod entrance for optimal performance.
3
4
2
1
Image 7-1
Cold mirror assembly
1
Cold mirror adjustment screws
Diagnostic
The easiest way to check the condition of the cold mirror is by removing the lamp unit. When the lamp unit is removed, the cold
mirror becomes visible at the end of the lamp compartment. In case the cold mirror is not damaged but dirt is clearly visible upon
the surface of the mirror it is recommended to clean the cold mirror. Always replace the cold mirror with a new one in case the cold
mirror is damaged. Possible damages are:
•
Cold mirror is broken.
•
Coating peels off.
•
Cold mirror is cracked.
124
R5905043 DP2K-12C/11CX 19/02/2018
Содержание DP2K-12C
Страница 1: ...DP2K 12C 11CX Service manual R5905043 15 19 02 2018...
Страница 4: ......
Страница 8: ...Table of contents 4 R5905043 DP2K 12C 11CX 19 02 2018...
Страница 12: ...1 Safety 8 R5905043 DP2K 12C 11CX 19 02 2018...
Страница 31: ...4 Troubleshooting 4 TROUBLESHOOTING R5905043 DP2K 12C 11CX 19 02 2018 27...
Страница 32: ...4 Troubleshooting 28 R5905043 DP2K 12C 11CX 19 02 2018...
Страница 96: ...5 Removal and installation of projector covers 92 R5905043 DP2K 12C 11CX 19 02 2018...
Страница 121: ...6 Lamps and lamp houses Image 6 38 R5905043 DP2K 12C 11CX 19 02 2018 117...
Страница 138: ...7 Cold mirror assembly 134 R5905043 DP2K 12C 11CX 19 02 2018...
Страница 175: ...10 Integrator rod 1 2 3 4 Image 10 4 Light pipe housing 4 Take off the housing R5905043 DP2K 12C 11CX 19 02 2018 171...
Страница 222: ...12 Card Cage 1 Image 12 11 218 R5905043 DP2K 12C 11CX 19 02 2018...
Страница 225: ...12 Card Cage Image 12 15 Button unit removal R5905043 DP2K 12C 11CX 19 02 2018 221...
Страница 281: ...15 Power input Image 15 13 Mains AC compartment cover R5905043 DP2K 12C 11CX 19 02 2018 277...
Страница 282: ...15 Power input 278 R5905043 DP2K 12C 11CX 19 02 2018...
Страница 299: ...18 Lamp power supply single module Image 18 4 LPS removal R5905043 DP2K 12C 11CX 19 02 2018 295...
Страница 306: ...18 Lamp power supply single module 302 R5905043 DP2K 12C 11CX 19 02 2018...
Страница 340: ...21 Maintenance procedures 336 R5905043 DP2K 12C 11CX 19 02 2018...
Страница 350: ...A Pin configurations 346 R5905043 DP2K 12C 11CX 19 02 2018...
Страница 351: ...B Input formats B INPUT FORMATS R5905043 DP2K 12C 11CX 19 02 2018 347...
Страница 352: ...B Input formats 348 R5905043 DP2K 12C 11CX 19 02 2018...