Metrologic MS7600 Horizon series Service Manual page 13

5.4.1.11 Use a Reflective paper and check out that
reflexion laser light gets to the photodiode
window at the signal processor board.
5.4.1.12 Once the alignment is fixed up, glue VLD
by using LOCTITE 406 and accelerator
LOCTITE 7455 to fast cure the glue.
5.4.1.13 Clean the mark at the joystick (Be careful
and do never touch Collector mirror with
fingers)
5.4.1.14 Assembly unit by following steps defined
in 5.1.1.5 in reverse order.
5-4