Fluke Car Amplifier 5725A Manual De Usuario

4-54.

High Voltage Sense Assembly (A6) ................................................ 4-30

4-55.

Sense Amplifier Section .............................................................. 4-32

4-56.

Analog Monitor Section .............................................................. 4-34

4-57.

Serial Interface/Guard Crossing Section ..................................... 4-35

4-58.

Analog Input Switching Section .................................................. 4-35

4-59.

Control Section ............................................................................ 4-36

4-60.

AC Line Voltage Selection Section............................................. 4-37

5-1.

Introduction .......................................................................................... 5-3

5-2.

Where to Find Further Information ...................................................... 5-3

6-1.

Introduction .......................................................................................... 6-3

6-2.

Replacing the Fuse ............................................................................... 6-3

6-3.

Cleaning the Air Filter.......................................................................... 6-4

6-4.

General Cleaning.................................................................................. 6-5

6-5.

Cleaning PCA’s..................................................................................... 6-5

6-6.

Access Procedures................................................................................ 6-6

6-7.

Initial Access Procedure .................................................................. 6-7

6-8.

Accessing the Power Supply Assembly (A4) .................................. 6-9

6-9.

Accessing the Digital Assembly (A5).............................................. 6-9

6-10.

Accessing the Current Amplifier Assembly (A2)............................ 6-11

6-11.

Accessing the High Voltage Amplifier (A3) ................................... 6-12

6-12.

Accessing the High Voltage Sense Assembly (A6)......................... 6-13

6-13.

Accessing the High Voltage Output Transistors.............................. 6-14

6-14.

Accessing the Interconnect Assembly (A1)..................................... 6-14

6-15.

Enabling Front or Rear Binding Posts.................................................. 6-15

7-1.

Introduction .......................................................................................... 7-3

7-2.

5725A Fault Codes............................................................................... 7-3

7-3.

Self Diagnostics.................................................................................... 7-3

7-4.

Manual Tests for Fault Isolation .......................................................... 7-6

7-5.

Problems 1 or 2: Fault at Power-Up or When Entering
Voltage Standby............................................................................... 7-7

7-6.

Problem 3: Fault When Entering Voltage Operate .......................... 7-8

7-7.

Problem 4: Fault When Entering Current Standby .......................... 7-8

7-8.

Problem 5: Fault When Entering Current Operate .......................... 7-8

7-9.

Reduced-Voltage Troubleshooting Mode ............................................ 7-8

7-10.

Testing the Power Supply By Itself...................................................... 7-9

8-1.

Introduction .......................................................................................... 8-3

8-2.

How to Obtain Parts ............................................................................. 8-3

8-3

Manual Status Information................................................................... 8-3

8-4.

Newer Instruments................................................................................ 8-3

8-5.

Service Centers..................................................................................... 8-4