5-15. OPTICAL SIGNAL ANALYZER PHOTOMULTIPLIER AND BRACKET ASSEMBLY
2A1A1A7 REPAIR (cont)
The photomultiplier tube may be dam-
aged by excessive exposure to light.
Do not handle photomultiplier tube
Remove three screws (9) and
remove tube carrier (10).
Remove cap (11) and shield (12)
from end of tube carrier (10).
Locate temperature sensor Q1
(13), tag and remove leads (14)
from connector J4.
Remove temperature sensor Q1 (13)
with leads and rod (15).
Cover photomultiplier tube (16)
with multifolded lens paper and
secure with masking tape.