Keysight Technologies Truevolt 34461A Kurzanleitung

ADMINISTRATIVE INFORMATION

ACTION X ON SPECIFIED FAILURE

CATEGORY: [[]] AGREEABLE TIME

STANDARDS

LABOR: 1 Hour

LOCATION [[]] CUSTOMER INSTALLABLE

CATEGORY: [[]] ON-SITE (active On-site contract required)

X SERVICE CENTER

[[]] CHANNEL PARTNERS

SERVICE: X RETURN

INVENTORY: [[]] SCRAP

[[]] SEE TEXT

USED [[]] RETURN

PARTS: [[]] SCRAP

[[]] SEE TEXT

AVAILABILITY: PRODUCT’S SUPPORT LIFE

NO CHARGE AVAILABLE UNTIL: 17 April 2019

X Calibration Required

[[]] Calibration NOT Required

PRODUCT LINE: GM

AUTHOR: WY

ADDITIONAL INFORMATION:

Modification Recommended Service Note

Version 1.2 | April 17, 2018| Page 1of 2

Modification Recommended

Service Note

34461A-05

34461A Digital Multimeter, 6½ Digit

Serial Numbers: MY50000000-MY57210900

The Problem –Keysight 34460A/34461A/34465A/34470A Digital Multimeter with firmware version

below “FW 2.17” may experience ACV out of specification.

Parts Required:

NONE

Supersedes:

NONE

Modification Recommended Service Note

Version 1.2 | April 17, 2018| Page 2of 2

Situation:

User may experience ACV out of specification when frequent function changing from other

measurement functions to ACV. This happens mostly during automated process causing the

component U507 to heat up and ACV measurement to drift out of specification.

This has been resolved in Firmware 2.17 and above.

Solution/Action:

For units out of specification, contact your nearest local Keysight Service Center to send unit for repair.

(Remark : Please ensure all the units currently in use are loaded with FW 2.17 and above)

At Keysight service center:

1. Perform standard verification using STE9000.

2. If unit fails at ACV test points, set DMM function to ACV and manual range 1V.

3. Provide 1V @ 1kHz input into the DMM. If DMM measured values are hovering around 40% of

full scale then disassemble the unit and perform the following verification steps:

i. After power on, measure the body temperature of U507 and check if it rises to more

than 100C within 20seconds. This indicates a defective U507.

ii. Visual inspect if the soldering at U507 turns yellowish. This also indicates a defective

U507.

4. Replace the component U507 (1826-3738).

5. Perform self-test, full calibration (adjustments and verification). Ensure all tests pass with no

errors.

6. Provide 1V @1kHz input into the DMM again, then measure ACV value should be close to 1V.

Revision History:

Date

Service

Note

Revision

Author

Reason for Change

17 Apr 2018

WanYee

As Published

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