Introduction - Hughes JVC 220 Service Manual

Chapter 4---Maintenance (Removal/Replacement)
4-2
Tools required to perform removal and replacement of projector
components and subassemblies are listed in Chapter 1,

Introduction.

WARNING !!!
chapter involve the removal and replacement of system
subassemblies. Ensure that the projector circuit breaker is
turned off and the AC power plug is removed from the AC
outlet PRIOR to attempting any of these procedures.
When performing any maintenance procedures in this chapter,
follow the guidelines below:
Left/Right Orientation: When left and right is mentioned in this
chapter, it is with reference to standing at the rear of the projector,
facing the screen.
Connectors on subassemblies and PCBs have tabs that must be
released first before pulling on the connector. The proper
procedure is to push slightly IN on the connector, then squeeze
the tab, then pull the connector out.
NOTE: While performing any maintenance procedures, check the
prism diaphragm for dryness, crazing, cracking, or possible
leaking. If any problems are observed, call HJT.
When references are made in this chapter to assemblies and
components, refer to Figures 4-1 and 4-14 for their locations.
Various procedures in this
Model 220 Service Manual