HP 3438A - Section VIII Service; Theory of Operation; Troubleshooting Procedures; Circuit Schematics

Section VlII Model 3438A
4.6V REF.
CIFCUITRI
CONTROLLER
DISPLAY
INPUT
SWITCWING
ccu ;--
+5v REF. IIREF.
I I
+4.6V REF.
Figure 8-1. Simplified Block Diagram.