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Table of Contents
ii
DPO4000 Series Service M anual
List of Tables
Table 4--1: External inspection check list 4--3......................
Table 4--2: Internal inspection check list 4--4......................
List of Figures
Figure 2--1: DPO4000 series block diagram 2--1....................
Figure 4--1: Locator for trim and cabin et removal 4--7...............
Figure 4--2: Locator for in ternal mod ules 4--8......................
Figure 4--3: Primary tr oubleshooting pr ocedure 4--13................
Figure 4-- 4: AC power supply troubleshooting procedure 4--14.........
Figure 4--5: Module isolation troubleshooting procedure 4--15.........
Figure 5--1: Exploded view, case 5--4..............................
Figure 5--2: Exploded view: front panel and display,
4-channel instruments 5--6...................................
Figure 5--3: Exploded view: front panel 2-chan nel instruments 5--8....
Figure 5-- 4: Exploded view: power supply and I/O board 5--10........
Figure 5--5: Exploded view: mainboard, inverter board,
and side fans 5--12..........................................