Fluke 87 Series IV User manual
®
87 & 89 Series IV
True RMS Multimeter
Service Manual
PN 676137
May 1999
© 1999 Fluke Corporation, All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies.
Limited Warranty & Limitation of Liability
Fluke Corporation (Fluke) warrants this product to be free from defects in material and workmanship under normal use and
service for the life of the product. This warranty extends only to the original buyer or end-user customer of a Fluke
authorized reseller, and does not apply to fuses, batteries or to any product which, in Fluke’s opinion, has been misused,
altered, neglected or damaged by accident or abnormal conditions of operation or handling. Fluke warrants that software
will operate on appropriate Fluke instruments substantially in accordance with its functional specifications for 90 days and
that it has been properly recorded on non-defective media. Fluke does not warrant that software will be error free or
operate without interruption.
Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no
authority to extend a greater or different warranty on behalf of Fluke.
Fluke's warranty obligation is limited, at Fluke's option, to refund of the purchase price, or free of charge repair or
replacement of a defective product which is returned to a Fluke authorized service center within the warranty period.
To obtain warranty service, contact your nearest Fluke authorized service center or send the product, with a description of
the difficulty, postage and insurance prepaid (FCA Destination), to the nearest Fluke authorized service center. Fluke
assumes no risk for damage in transit. Following warranty repair, the product will be returned to Buyer, transportation
prepaid (FCA Destination). If Fluke determines that the failure was caused by misuse, alteration, accident or abnormal
condition of operation or handling, Fluke will provide an estimate of repair costs and obtain authorization before
commencing the work. Following repair, the product will be returned to the Buyer transportation prepaid and the Buyer will
be billed for the repair and return transportation charges (FCA Shipping Point).
Warranty service is available outside the United States only if product was purchased through a Fluke Authorized Sales
Outlet in the country of use or the applicable Fluke international price was paid. Product transported from the United
States for which the applicable Fluke international price was not paid must be returned to the U.S. to receive warranty
service, at the shipment expense and risk of Buyer. Fluke reserved the right to invoice Buyer for importation costs of
repair/replacement parts when product purchased in one country is submitted for repair in another country.
THIS WARRANTY IS PURCHASER’S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE SHALL NOT BE LIABLE FOR ANY
SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA,
WHETHER ARISING FROM BREACH OF WARRANTY OR BASED ON CONTRACT, TORT, RELIANCE OR ANY
OTHER THEORY.
Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or limitation of
incidental or consequential damages, the limitations and exclusions of this warranty may not apply to every buyer. If any
provision of this Warranty is held invalid or unenforceable by a court of competent jurisdiction, such holding will not affect
the validity or enforceability of any other provision.
To locate an authorized service center, visit us on the World Wide Web at www.fluke.comor call Fluke using the phone
numbers listed below:
1-888-99-FLUKE (1-888-993-5853) in USA and Canada
+31 402-678-200 in Europe
+81-3-3434-0181 Japan
+65-738-5655 Singapore
+1-425-356-5500 in other countries
Fluke Corporation Fluke Europe B.V.
P.O. Box 9090 P.O. Box 1186
Everett WA 98206-9090 5602 B.D.
U.S.A Eindhoven, The Netherlands
i
Table of Contents
Title Page
Introduction ...................................................................................................... 1
Precautions and Safety Information.................................................................. 2
International Symbols....................................................................................... 2
Safety Information............................................................................................ 3
Specifications.................................................................................................... 4
Accuracy ...................................................................................................... 4
Feature Summary ......................................................................................... 4
General Specifications.................................................................................. 5
Basic Specifications...................................................................................... 6
AC Voltage and Decibel Specifications....................................................... 6
AC Current Specifications............................................................................ 7
DC Current Specifications............................................................................ 7
Resistance and Conductance Specifications................................................. 8
Capacitance and Diode Function Specifications .......................................... 8
Frequency, Duty Cycle, & Pulse Width Specifications................................ 8
Temperature Specifications.......................................................................... 9
MIN MAX Recording Specifications........................................................... 9
Frequency Counter Sensitivity ..................................................................... 9
Burden Voltage (A, mA, µA)....................................................................... 10
Input Characteristics..................................................................................... 10
Required Equipment......................................................................................... 11
Basic Maintenance............................................................................................ 12
Opening the Meter Case............................................................................... 12
Removing and Reinserting the Circuit Board Assembly.............................. 12
Replacing the LCD....................................................................................... 13
Reassembling the Meter Case....................................................................... 14
Testing Fuses (F1 and F2)............................................................................ 14
Replacing Fuses............................................................................................ 15
Replacing the Batteries................................................................................. 15
Cleaning ....................................................................................................... 16
Performance Tests ............................................................................................ 17
Testing the Display....................................................................................... 17
Backlight Test .............................................................................................. 17
Current Terminal Sensing Test..................................................................... 17
Keypad Test.................................................................................................. 18
Verification of the IR Communication Port ................................................. 18
87 & 89 Series IV
Service Information
ii
Testing Temperature..................................................................................... 18
Testing Voltage, Current, Resistance, Capacitance and Diode Functions.... 19
Calibration........................................................................................................ 22
Keypad Interface .......................................................................................... 22
General Procedure........................................................................................ 23
Special Requirements................................................................................... 24
Calibration Inputs......................................................................................... 24
Remote Interface .......................................................................................... 26
Temperature Calibration............................................................................... 26
Setup ........................................................................................................ 26
Procedure ................................................................................................. 27
Re-Programming Serial Number or Model Number .................................... 27
Parts and Accessories ....................................................................................... 28
iii
List of Tables
Table Title Page
1. International Symbols........................................................................................... 2
2. Required Tools and Equipment............................................................................. 11
3. Temperature Test Input and Display..................................................................... 18
4. Performance Test Steps......................................................................................... 19
5. Calibration Inputs.................................................................................................. 24
6. Replacement Parts and Accessories...................................................................... 28
87 & 89 Series IV
Service Information
iv
v
List of Figures
Figure Title Page
1. Removing LCD Mask to Access LCD.................................................................. 13
2. Testing the Current Fuses...................................................................................... 15
3. Battery and Fuse Replacement.............................................................................. 16
4. Display Test.......................................................................................................... 17
5. Locating Recessed Calibration Button.................................................................. 22
6. Calibration Display............................................................................................... 23
7. Replacement Parts and Accessories...................................................................... 29
87 & 89 Series IV
Service Information
vi
1
Introduction
Warning
To avoid shock or injury, do not perform the verification tests
or calibration procedures described in this manual unless you
are qualified to do so.
The information provided in this document is for the use of
qualified personnel only.
Caution
The 87 & 89 Series IV Multimeters contain parts that can be
damaged by static discharge.
Follow the standard practices for handling static sensitive
devices.
The information in this manual deals with the Fluke Models 87 & 89 Series IV True
RMS Multimeters, (hereafter referred to as “the meter”). Information provided includes:
•Precautions and safety information
•Specifications
•Basic maintenance (cleaning, replacing the battery and fuses)
•Performance test procedures
•Calibration and calibration adjustment procedures
•Accessories and replaceable parts
For complete operating instructions, refer to the Model 87 & 89 Series IV Users Manual.
To contact Fluke, call:
1-888-993-5853 in USA and Canada
+31 402-678-200 in Europe
+81-3-3434-0181 Japan
+65-738-5655 Singapore
+1-425-356-5500 in other countries
For additional information about Fluke, its products and services, visit Fluke’s web site
at:
www.fluke.com
87 & 89 Series IV
Service Manual
2
Precautions and Safety Information
Use the Meter only as described in the Users Manual. If you do not do so, the protection
provided by the Meter may be impaired.
Read the “Safety Information” page before servicing this product.
In this manual, a Warning identifies conditions and actions that pose hazard(s) to the
user; a Caution identifies conditions and actions that may damage the Meter or the test
instruments.
International Symbols
International symbols used on the Meter and in this manual are explained in Table 1.
Table 1. International Symbols
Symbol Meaning Symbol Meaning
Alternating current Earth ground
Direct current Fuse
Alternating or direct current Conforms to European Union
directives
Refer to the manual. Important
information. Conforms to relevant Canadian
Standards Association directives
Inspected and licensed by TÜV
Product Services. Double insulated
Battery Underwriters Laboratories, Inc.
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