Fluke 125B/S Calibration Guide - Page 52

Main PCA, Keypad, and Keypad Foil Removal, Display Assembly Removal, Maintenance, How to Clean

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123B/124B/125B Calibration Manual Main PCA, Keypad, and Keypad Foil Removal To remove the main PCA: 1. Remove the two screws that connect the main PCA to the top case (one on each side behind the input assembly). 2. Loosen the connector and disconnect the keypad foil from the Main PCA. 3. Lift the Main PCA from the ScopeMeter gently. You will see a flat cable that connects the main PCA to the display. 4. Disconnect the flat cable from the display. 5. After the Main PCA has been removed, remove the keypad and keypad foil from the top case. Display Assembly Removal The display assembly has a dust seal that is friction fit to the top case. To remove the display: 1. Pry gently on a corner of the display until the display assembly starts to move. 2. Lift the display out. Maintenance This section contains basic maintenance procedures. XW Warning To prevent personal injury and for safe operation of the Product: • Have an approved technician repair the Product. • Use only specified replacement parts. • Before carrying out any maintenance, carefully read the safety information at • the beginning of this manual. • Do not operate the Product with covers removed or the case open. Hazardous voltage exposure is possible. • Remove the input signals before you clean the Product. How to Clean Clean the Test Tool with a damp cloth and a mild soap. Do not use abrasives, solvents, or alcohol. These can damage the text on the Test Tool. Storage If you store the Test Tool for an extended period of time, charge the Lithium-ion batteries before storage. Battery Replacement XW Warning To prevent possible electrical shock, fire, or personal injury and for safe operation and maintenance of the Product: • Batteries contain hazardous chemicals that can cause burns or explode. If exposure to chemicals occurs, clean with water and get medical aid. • Use only the Fluke BP290 as a replacement battery. • Do not disassemble the battery. • Repair the Product before use if the battery leaks. • Use only Fluke approved power adapters to charge the battery. • Do not short the battery terminals together. 44

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123B/124B/125B
Calibration Manual
44
Main PCA, Keypad, and Keypad Foil Removal
To remove the main PCA:
1.
Remove the two screws that connect the main PCA to the top case (one on each side behind the input
assembly).
2.
Loosen the connector and disconnect the keypad foil from the Main PCA.
3.
Lift the Main PCA from the ScopeMeter gently.
You will see a flat cable that connects the main PCA to the display.
4.
Disconnect the flat cable from the display.
5.
After the Main PCA has been removed, remove the keypad and keypad foil from the top case.
Display Assembly Removal
The display assembly has a dust seal that is friction fit to the top case.
To remove the display:
1.
Pry gently on a corner of the display until the display assembly starts to move.
2.
Lift the display out.
Maintenance
This section contains basic maintenance procedures.
XW
Warning
To prevent personal injury and for safe operation of the Product:
•
Have an approved technician repair the Product.
•
Use only specified replacement parts.
•
Before carrying out any maintenance, carefully read the safety information at
•
the beginning of this manual.
•
Do not operate the Product with covers removed or the case open. Hazardous
voltage exposure is possible.
•
Remove the input signals before you clean the Product.
How to Clean
Clean the Test Tool with a damp cloth and a mild soap. Do not use abrasives, solvents, or alcohol. These can
damage the text on the Test Tool.
Storage
If you store the Test Tool for an extended period of time, charge the Lithium-ion batteries before storage.
Battery Replacement
XW
Warning
To prevent possible electrical shock, fire, or personal injury and for safe
operation and maintenance of the Product:
•
Batteries contain hazardous chemicals that can cause burns or explode. If
exposure to chemicals occurs, clean with water and get medical aid.
•
Use only the Fluke BP290 as a replacement battery.
•
Do not disassemble the battery.
•
Repair the Product before use if the battery leaks.
•
Use only Fluke approved power adapters to charge the battery.
•
Do not short the battery terminals
together.