Mechanical Instructions
EN 7DPTV585 AA 4.
4.1.6 Side Jack Panel Removal
1. Remove the Left Side Back Cover (see procedure above
excluding the Module Bracket removal).
2. Remove two screws from the panel.
3. Slide the Side Jack Panel PWB out of the bracket.
4.1.7 PIP Panel Removal (if present)
1. Remove the rear Jack Panel cover (76).
2. Remove three screws from the PIP panel.
4.1.8 Small Signal Board Removal (SSB)
First, remove the Module Bracket (see the chapter “Small
Signal Module Removal”).
1. Release the metal retainer clips, located at the front and
rear edges of the SIMM connector.
2. Tilt the SSB to the right and then pull it up.
4.1.9 Convergence Panel Removal (ACS)
First, remove the Module Bracket (see the chapter “Small
Signal Module Removal”).
1. Carefully pull the ACS panel upward to separate it from the
SSM connectors.
2. Disconnect the cable assemblies.
4.1.10 Wide Band Video Panel Removal (HOP)
First, remove the Module Bracket (see the chapter “Small
Signal Module Removal”).
1. Remove the rear Jack Panel cover (76).
2. Disconnect the ribbon cable connectors.
3. Carefully separate the HOP panel from the SSM
connectors.
4.1.11 Front Control Panel and Left or Right Speaker Removal (5)
1. Remove the Left and Right Side Back Covers.
2. Remove the two screws (on either side) of the speaker
location.
4.1.15 Complete Optical Assembly or Individual CRT Assembly
Removal
1. Remove the Plastic Light Barrier.
2. Disconnect the CRT panels, 2nd anode leads (at HVT),
and the yoke connectors from assemblies to be removed.
3. To remove the complete Optical Assembly, remove four
screws (G) and lift the assembly up and out.
4. To remove individual CRT assemblies, remove four screws
(H) from the desired assembly and lift the assembly up and
out.
Caution: Do not disturb the focus assembly wing nuts, as this
will misadjust mechanical focus.
4.2 Service Position
1. Remove the Side Back Covers.
2. Remove the Front Speaker Baffle.
3. Remove the Front Control Panel.
4. Route the ribbon cable and the wire through opening and
into the back of the unit.
5. Reconnect the ribbon cable to the Front Control Panel.
6. Remove the Side Jack Panel to allow room for cable
movement.
7. Remove the rear Jack Panel cover (76).
8. Being careful with the PIP Panel, pull the Chassis Frame
out and tilt up.
9. Place the Chassis Frame on the bottom board of the PTV.
4.3 Picture Tube Replacement
Replacement of the cathode ray tube (CRT) and/or optical
system components of a Projection TV (PTV) can be easily
accomplished by following general guidelines. Use care when
working around the CRT and optical systems of the PTV. The
PTV light path encompasses a number of precision optical
components. These include lenses, mirrors, the lenticular
screen, and Fresnel lens. The PTV incorporates three separate
CRTs, representing green, red, and blue outputs. Each CRT
uses an independent deflection/convergence yoke, magnetic
centring ring, coupler, C-element lens, and output lens (A/B