
Chapter 5 - System Maintenance
Controls and Indicators
MGC Unit Front Panel
The front panel of the MGC unit contains a number of controls, components, and indicators for using the MGC system. Figure 
Main
Control
Module
CONT
Critical
Major
Minor 
L0
Power
L1
L2
L3
PWR
IN OUT
Floppy Disk Drive COM Port
Functional Modules
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MUX  | MUX  | DATA  | DATA  | VIDEO  | VIDEO  | VIDEO  | VIDEO  | AUDIO  | AUDIO  | AUDIO  | AUDIO  | ||||
Stby  | Stby  | Stby  | Stby  | Stby  | Stby  | Stby  | Stby  | Stby  | Stby  | Stby  | Stby  | Stby  | Stby  | Stby  | Stby  | 
Fail  | Fail  | Fail  | Fail  | Fail  | Fail  | Fail  | Fail  | Fail  | Fail  | Fail  | Fail  | Fail  | Fail  | Fail  | Fail  | 
Active  | Active  | Active  | Active  | Active  | Active  | Active  | Active  | Active  | Active  | Active  | Active  | Active  | Active  | Active  | Active  | 
Line 1  | Line 1  | Line 1  | 
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Line 2  | Line 2  | Line 2  | 
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Line 3  | Line 3  | Line 3  | 
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Line 4  | Line 4  | Line 4  | 
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Line 5  | Line 5  | Line 5  | Line A  | 
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Line 6  | Line 6  | Line 6  | 
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Line 7  | Line 7  | Line 7  | Line B  | 
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Line 8  | Line 8  | Line 8  | 
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PWR  | PWR  | 
IN OUT  | IN OUT  | 
Power Supply Module Handle