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GNS 400W Series Maintenance Manual
Page 5-9
190-00356-05
Rev. A
5.4.3 Main Chassis Bottom Cavity (Figure 5-6)
Inverter Board (all units)
Removal
1.
Remove Top Cover.
2.
Disconnect Red and Blue LCD Cable that is attached to Inverter Board (1).
3.
Remove three screws (2). Remove Inverter Board and Insulator (3).
Replacement
1.
Install Inverter Board Insulator (3). Install three screws (2) attaching Inverter Board (2).
2.
Connect Red and Blue LCD Cable attached to Inverter Board.
3.
Attach Top Cover.
Comm Board Removal (GNC 420W/AW, GNS 430W/AW)
1.
Remove Top Cover.
2.
Remove three Comm Board Covers (4).
3.
Unsolder Buss Wire (Detail A) from Coax Connector.
4.
Remove two screws (6) attaching 25 pin connector to Main Chassis (7).
5.
Remove three screws (8) that secure Comm Board (5) to Main Chassis (7).
6.
Remove two screws (9) securing MOSFET (10) to Main Chassis.
7.
Remove Comm Board (5) and Comm Board Insulator (9).
Replacement
1.
Install Comm Board Insulator (9).
2.
Place Comm Board (5) in chassis and attach it to Main Chassis (7) using three screws (8).
3.
Install two screws (6) and attach 25 pin connector to Main Chassis (7).
4.
Solder Buss Wire (Detail A) from Comm Board (5) to Coax Connector (11).
5.
Install three Comm Board Covers (4).