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Disassembly for Service
Back Cover
Remove all the screws marked with an arrow( from the back of the receiver. See Fig. 8. )
C-Board - CRT Output
Plugs into the socket on the CRT neck. To release the Focus wire, use a flat tool to release See Fig. 6 A, pull the wirethe tab in the socket, look up and remove the wire by pulling away the socket B, To re-insert, close the wire-look by pushing until is secured with the tab, and insert the wire into the socket
Note: Screw configuration, type, and number of screws vary depending on the model of the Receiver serviced and the application; various models are covered in this Manual. Use same hardware when reassembling the receiver.
� � � � 2 screws at the top edge of the Receiver. 2 screws at the lower corners of the Receiver. 1 screw by the A/V jacks. 1 screw by the Fly-back assembly.
A-Board - Main Chassis
1. Pull carefully the tab in the chassis rail, at the left side of the main chassis, this will release the rail from the cabinet. See Fig 5. 2. Slide the chassis and rail completely out of the guide rails of the cabinet. 3. Stand the receiver on its edge. The underside of the board is completely accessible for component replacement.
A
Figure 6. Focus Wire Release
B
Speakers
Speakers are secured to the cabinet�s front with 2 screws in diagonal (opposite corners).
Note: Some tie-wraps that secure the wire dressings may need to be unfastened for chassis removal.
4. When reassembly, place the chassis rail on the cabinet, then place the main chassis, be sure is in the rails at both sides, then push all the way to the front.
Keyboard Push Button Assembly
Fastened to the inside of the cabinet front with 1 or 2 screws, according to the model�s cabinet.
Disassembly for CRT Replacement
1. Discharge the CRT as instructed in the Safety Precautions (see page 2). 2. Disconnect the yoke (DY) plug and degaussing coil (DEG) plug from the main board. 3. Unplug the CRT 2nd anode button. 4. Remove the C-Board from the CRT base and unplug the black wire (CRT dag ground) C10. 5. Disconnect Speakers plug SP from the A-Board. 6. Lift the Main Chassis (A-Board) completely out with the CRT Board attached.
Figure 5. Chassis Rail Detail
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