Agilent Technologies 8564EC Service Manual page 240

General Troubleshooting
Introduction
Figure 7-4 Ribbon Cable Connections (3 of 3)
Figure 7-4 shows A2J8 connections on 8560 EC-Series
Instruments. Lines 2 − 5 and 42 − 44 supply +5V to the two LCD
backlights. Lines 1 and 41 supply +5V to the A17A1 Inverter
board. Lines 1 − 6 and 41 − 44 are identical on A17J1.
Chapter 7 321