Assembly-Level Service
Theory of Operation
2-18
Figure 3-5. A1 Power-Supply Block Diagram
The Power Supply block diagram on page 3-30 is changed:
• The Ext DC Input voltage is 40-58 VDC,
• The F2 fuse rating is 2.5A,
• The T1 toroidal power transformer part number is 9100-5134,
• The P/O B1 battery packs are deleted,
• The 05071-60226 battery connector assemblies are deleted,
• The F1 fuse and series-connected diode on A11 are deleted.
The external dc input(s) enter the instrument via the 48V Subpanel
Assembly (part number 05071-60277) w hich provides both inputs
with power steering and fuse protection. The schematic diagram for
the Subpanel Assembly appears in Figure 2-1 of this chapter.
B1 Internal-Standby Battery
The paragraph describing the B1 Internal Standby Battery on page 3-31
is deleted:
Option 048:
Option 048: