System Controller \ Raster Timing Generator; Video Processor Pcbs; Video Processor Pcb - Hughes JVC 100 Service Manual

Chapter 4---Maintenance (Removal/Replacement)
When replacing any printed circuit boards (PCB), always:
Turn the projector off and allow to cool off for 5 minutes.
!
Verify that the power is off at the circuit breaker and the power plug is
!
disconnected.
Verify there are no bent pins on any connectors before installing the PCB.
!
Make sure the PCB is properly and securely seated before reapplying
!
power.
The System Controller / Raster Timing Generator PCB is located just above the
Video Processor PCB and can be identified by the external control connections on
it (see Figure 4-10). All internal electrical connections to the System Controller /
Raster Timing Generator PCB, are routed through the backplane board. There are
only the external interface cables to remove.
To remove the System Controller / Raster Timing Generator (SC/RTG),:
1. Disconnect the control cables.
2. Remove the right side cover (optional).
3. Use a small, flat-head screwdriver to loosen the retaining screws
4. Grasp the D-handle and pull out the SC/RTG PCB.
5. Reverse the order to install SC/RTG PCB.
Figure 4-11 System Controller/ RTG and Video Processor PCBs.

4.10 Video Processor PCB

The Video Processor, VIC PCB is located below all the other circuit boards and
can be identified by the Video Input BNC connectors on it (see Figure 4-10). All
internal electrical connections to the Video Processor PCB are routed through the
backplane board. There are only the external Video Input cables to remove.
To remove the Video Processor PCB :
1. Disconnect the Video Input cables.
2. Remove the right side cover (optional).
3. Use a small, flat-blade screwdriver to remove the retaining screws
4. Grasp the D-handle and pull out the.
Model 100 Service Manual
System Controller/
Raster Timing
Generator PCB
Video
Processor PCB