Mitsubishi Diamond Pro 87TXM User Manual page 32

NOTE:
Two fine horizontal lines may be visible on the screen. This is not a fault or defect of the
monitor and is normal for all aperture grille type displays.
The fine lines are the shadows of Damper Wires which are used to reduce the
susceptability of the DIAMONDTRON CRT's aperture grille to shock or vibration.
Shadow of Damper Wires
Aperture Grille
Electron Gun
Damper Wires
Aperture Grille Type
31
Shadow of
Damper Wires