Regarding LP3500 schematic drawing 090-0150:
Sheet 3 of 4 appears to have a couple of errors in the Power Management section.
The U3 (74VHC541) Y? lines on pins 14..18 should direct to sheets, as follows:
14 <Sht 2>
15 <Sht 2>
16 <Sht 3>
17 <Sht 4>
18 <Sht 5>
Sheet 2, in the Relay section, all sheet pages are missing.
Q13 and Q14 gates should direct to sheet 3, and Q21 gate should direct to sheet 1.