FLUKE 77 III free download

File name 77iii___smeng0100.pdf

® 77 Series III Multimeter Service Manual PN 800604 November 1998 Rev.1, 11/99 © 1998,1999 Fluke Corporation. All rights reserved. Printed in U.S.A. All product names are trademarks of their respective companies. Table of Contents Chapter 1 Title Page 1-1 1-3 1-3 1-4 1-4 2-1 2-3 2-3 2-3 2-3 2-4 2-4 2-4 2-5 2-5 2-5 2-5 3-1 3-3 3-3 3-4 3-4 3-7 3-7 3-7 3-8 3-8 Introduction and Specifications ... 1-1. Introduction ... 1-2. Organization of the Service Manual ... 1-3. Conventions ... 1-4. Specifications ... Theory of Operation ... 2-1. Introduction ... 2-2. Functional Block Description ... 2-3. Detailed Description ... 2-4. Voltage Signal Conditioning ... 2-5. Current Conditioning ... 2-6. Ohms ... 2-7. Additional Circuitry ... 2-8. AC Converter ... 2-9. Active Filter ... 2-10. Rotary Switch ... 2-11. A/D Conversion ... Maintenance ... 3-1. Introduction ... 3-2. PCA Access and General Maintenance ... 3-3. Display Access ... 3-4. Cleaning ... 3-5. Performance Test ... 3-6. Initial Procedure ... 3-7. DC Voltage Test ... 3-8. AC Voltage Test ... 3-9. Resistance Test ... i 2 3 77 Series III Service Manual 3-10. Diode Test ... 3-11. DC mA Test ... 3-12. DC Amps Test ... 3-13. Calibration ... 3-14. Troubleshooting ... 3-15. Supplemental Troubleshooting Procedures ... 3-16. Checking the Crystal Oscillator ... 3-17. Checking

File name 77iii___smeng0102.pdf

Manual Supplement Manual Title: Part Number: Print Date: Revision/Date: 77 Series III Service 800604 November 1998 1, 11/99 Supplement Issue: Issue Date: Page Count: 2 2/03 1 This supplement contains information necessary to ensure the accuracy of the above manual. © 2003 Fluke Corporation. All rights reserved. Printed in the U.S.A N 77 Series III Service Manual Supplement Change #1 On page 2-4, under Current Conditioning, replace the last sentence with the following: F1 protects the mA circuitry; F2 protects the 10A circuitry. Change #2 On page 4-5, Table 4-1, change MP14, From: 659786 To: 659128 Change #3 On page 2-7, Figure 2-2, replace the bottom half of the figure with the following: ACTIVE FILTER INT R10 40 27 39 28 26 FILTER AC FILTER + R9 R19 AC CONVERTER AC AC 17 C5 C6 R17 R18 + AC AC 2/03 INPUT 1 16 C11 + + C9