Hughes Jvc 200 Projector Service Manual

Chapter 4---Maintenance (Removal/Replacement) 
4.2  Projector Covers 
Prior to removing either cover, review the chapter on Safety and 
adhere to all warnings and cautions. 
 
Latch Levers 
Holding Slots 
Interlock Switch. 
Pull up immediately after 
removing front or rear cover 
to reapply power to Arc 
Lamp cooling fans. 
Figure 4-2   Rollbar Assembly. 
To remove the front or rear covers (refer to Figure 4-2): 
1.   Disconnect the projector power plug. 
2.   Loosen the two pozidrive spring screws at...

 Chapter 4---Maintenance (Removal/Replacement) 
The power interlock switches for both covers are attached 
to each cover hinge. 
5.   When the Latch Levers are inserted into the holding 
slots, lift the cover off. Be careful not to brush against 
any of the internal components of the projector when 
removing the cover. If any undue resistance is felt, stop 
to locate the source before proceeding.  
6.   Replace the covers in reverse order from above. When 
replacing either cover, make sure the slot in...

Chapter 4---Maintenance (Removal/Replacement) 
WARNING!!! Dangerous light exists in 
this area of the projector. Before proceeding with the removal 
of any subassemblies below, verify that the circuit breaker at 
the rear of the projector is turned off and the power plug is 
removed from the AC outlet.  
To remove the Arc Lamp from the Lamphouse Dock: 
1.   Remove the front cover (Section 4.2). 
2.   Disconnect the fan connector from the Arc Lamp 
exhaust fan. 
3.   Loosen (½ turn) the large retainer...

 Chapter 4---Maintenance (Removal/Replacement) 
 
Figure 4-4.   Lamphouse Dock and Arc Lamp with cover off. 
7.   When reinstalling the Arc Lamp, be sure that the 
Safety Shutter tab on the left side (Figure 4-4) engages 
the left side of the housing so that the Arc Lamp 
cooling door opens when the Arc Lamp is installed. 
8.   After reinstalling the Arc Lamp, perform the Arc Lamp 
Focus, Alignment and Current Setting procedures as 
shown in Sections 3.1 and 3.2. 
To remove the Lamphouse Dock (Ignitor...

Chapter 4---Maintenance (Removal/Replacement) 
4.5  Arc Lamp Power Supply 
To remove the Arc Lamp Power Supply: 
1.   Remove the front cover (Section 4.2). 
2.   Remove the lower-right-front-side panel by removing 
the 5 pozidrive screws securing it. 
3.   Remove the 2 pozidrive screws from the bottom of the 
EMI shield and slide it out of the way to the left. 
4.   Remove and label the cables from the DC OUTPUT 
terminal, J74.  
5.   Disconnect J71 (AC Input). 
6.   Disconnect J72 (SIGNAL CABLE). 
7....

 Chapter 4---Maintenance (Removal/Replacement) 
1.   Remove the front and rear covers (Section 4.2). 
2.   Remove the High Voltage Power Supply cover (Figure 
4-5) by removing the 2 pozidrive screws that secure 
the HVPS at the top of the cover and loosening the 1 
pozidrive screw at the bottom of the front flap (Do not 
remove this bottom screw-it is difficult to reinstall. The 
HVPS will slide up and over it). 
 
Figure 4-5.    High Voltage Power Supply cover. 
 
Figure 4-6   High Voltage Power Supply....

Chapter 4---Maintenance (Removal/Replacement) 
NOTE:  For the remainder of this procedure refer to Figure 
4-6 above. 
4.   Disconnect the 3 CRT anode cables. 
5.   Disconnect P44-G2 Out (at the middle-front of the 
HVPS). 
6.   Unsnap the cable clamp at the top of the HVPS. 
7.   Remove the anode cables and the P44 cable from the 
cable clamp. 
8.   Disconnect P45 (“Control”) at upper left of HVPS. 
9.   Disconnect and label the 3 Focus cables. The square 
tabs on these cables (see Figure 4-6) may have...

 Chapter 4---Maintenance (Removal/Replacement) 
To remove the Raster Timing Generator, Video Processor, or 
System Controller PCBs: 
1.   Turn off power at the remote control and at the circuit 
breaker on the projector rear panel. 
2.   Remove the projector rear cover. 
3.   For the Raster Timing Generator and Video Processor 
PCBs, grasp the card extractor tabs at both ends of the 
boards and pull out. To remove the System Controller 
Board, use a small, flathead screwdriver and remove 
the screw in...

Chapter 4---Maintenance (Removal/Replacement) 
 
Figure 4-7.   Convergence/Deflection PCB. 
4.   Loosen (not necessary to remove) the 5 screws that 
secure the Convergence Deflection PCB to the electronic 
module card cage (see Figure 4-7).  
5.   Remove the Convergence Deflection PCB by sliding it 
upward so the mounting screws will clear the access 
holes, then angle the right side outward. NOTE: In order 
to get the right side out, it may be necessary to first move 
the board out enough to clear the...

 Chapter 4---Maintenance (Removal/Replacement) 
2.   Disconnect 6 connectors; J34, J35, J36, J41, J42, and 
J43. (see Figure 4-8). Move the cables out of the way. 
3.   Loosen (not necessary to remove) the 5 pozidrive screws 
that secure the H/V Deflection Board to the electronic 
module cage.  
4.   Remove the H/V Deflection PCB by sliding it toward the 
left side of the projector (this is the upward direction if the 
electronic module is raised up) so that the mounting 
screws clear the access holes....