Agilent Technologies FieldFox N9912A Guida rapida

IIF

IIC

IIO

ADMINISTRATIVE INFORMATION

SERVICE NOTE CLASSIFICATION:

MODIFICATION RECOMMENDED

ACTION X ON SPECIFIED FAILURE

CATEGORY: [[]] AGREEABLE TIME

STANDARDS

LABOR: 7.0 Hours

LOCATION [[]] CUSTOMER INSTALLABLE

CATEGORY: [[]] ON-SITE

X SERVICE CENTER

[[]] CHANNEL PARTNER

SERVICE [[]] RETURN

INVENTORY:X SCRAP

[[]] SEE TEXT

USED [[]] RETURN

PARTS: X SCRAP

[[]] SEE TEXT

AVAILABILITY: PRODUCT’S SUPPORT LIFE

NO CHARGE AVAILABLE UNTIL: 31-DEC-2020

X Calibration Required

[[]] Calibration NOT Required

PRODUCT LINE: WN

AUTHOR: LSH

ADDITIONAL INFORMATION:

PRINTED IN U.S.A.

August 9, 2012

Rev. 20 Page 1 of 3

N9912A-03A

S E R V I C E N O T E

Supersedes:

N9912A-03

N9912A FieldFox RF Analyzer

Serial Numbers: US00000000-US49230000, SG00000000-SG49230000, MY00000000-MY49230000

Replace or modify the System Board (N9912-60004) to prevent power up problem.

Parts Required:

P/N Description Qty.

N9912-60004 System Board 1

N9912-60002 RF assy 1

Page 2 of 3 N9912A-03A

Situation:

A FieldFox may not power up under the following circumstances:

- The FieldFox has been operated until the battery has become completely discharged and the unit

turns off.

- The user connects external power but the unit will not turn on.

- Installing a charged battery in the unit does not fix the problem, the unit will not power up.

Work around:

- Remove the battery and external power from the unit.

- Connect external power to the unit.

- Turn the unit on.

- Insert the battery after the unit has successfully powered on.

Solution/Action:

If the power up problem described above occurs and if the customer insists the problem be permanently fixed

then replace the System Board (N9912-60004). Alternatives to replacing the System Board are to use the

work around given above or to modify the existing System Board.

Process to replace the System Board:

For some units, it will be necessary to replace both the System Board (N9912-60004) and the RF

Assy (N912-60002). See Service Note N9912A-02 for an explanation. Do the following to check the

revision of the RF Assy:

- If the firmware revision is less than A.03.02, upgrade the firmware.

- Power up the FieldFox and press the System hard key.

- Press Service Diagnostics then System Information

- On the “SB Identity” line, the value following “HW=” should be 6 or greater.

- On the “RF Identity” line, note the value following “HW=”.

For “RF Identity”, if the value following “HW=” is 9 or less (or if “N/A” is displayed), the RF Assy

must be replaced along with the System Board.

Assembly replacement instructions are contained in the N9912A Service Guide (N9912-90003).

After assembly replacement is complete, do the following to check for compatible assembly

revisions:

- If the firmware revision is less than A.03.02, upgrade the firmware.

- Power up the FieldFox and press the System hard key.

- Press Service Diagnostics then System Information

- On the “SB Identity” line, the value following “HW=” should be 6 or greater.

After replacing the System Board, perform the Operation Check in chapter 3 of the FieldFox Service

Guide (N9912-90003).

Process to modify existing System Board:

It is possible to modify the existing System Board if your facility has limited surface mount soldering

capability. The modification involves removing a surface mount capacitor. Contact CTD email at ctd-

soco_support@agilent.com to obtain detailed information. If your facility is qualified, this solution

is faster and less expensive.

Page 3 of 3 N9912A-03A

After modifying the System Board, perform the Operation Check in chapter 3 of the FieldFox Service

Guide (N9912-90003).

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