IBM 3277 Troubleshooting Manual page 102

Switch
*CRT
Upper
Chassis
*Field Replaceable Unit
*Security
Keylock
(Feature)
CRT
Grounding
Spring
Lower
Chassis
Diagram 7-5. Model 2 Locations, Right-Sicle View
7-6
Centering
Magnets (2)
(Under Shields)
Chassis
Clamp
*-12V
Regulator
*Logic
Board
*+5V
+5V Fuse 01C/(Fl)
+34V Fuse 01C/(F2)