HP Video Game 00974-90002 manual Troubleshooting, Cleaning, Replaceable Parts/Accessories

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Maintenance

Troubleshooting

Problem	Possible Cause	Suggested Action

Unit won’t turn on	Dead Batteries	Replace batteries

Unit won’t turn off	Input limit exceeded	Remove test leads and press any key to reset.

Display flashes and Rapid	Input limit exceeded	Remove test leads and press any key to reset.
beeps	Input limit exceeded	Remove test leads and press any key to reset.
beeps

Battery Annunciator on	Low battery voltage	Replace batteries

Unable to measure current	Blown input protection fuse	Replace fuse(s)
10 A or mA - μA	Blown input protection fuse	Replace fuse(s)
10 A or mA - μA

Cleaning

Wipe instrument with a soft rag dampened with soap and water. Do not immerse in water. Do not use chemical cleansers or solvents.

Refer to the disassembly diagram on page 6-5.

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Contents HP 974A Multimeter User’s Guide Page Table of Contents HP 974A MultimeterSafety Summary Safety SymbolsSafety Summary Maximum Overvoltage Limitations AC and DC Voltage FunctionsProbes and Test Leads Function Maximum Operating InputOperation Terminals, Shutter, & Test LeadsFunction Switch Switch Display PositionFunction Keys Press Action Main Display Secondary DisplayMinimum/Maximum Action Main Display Secondary DisplayHold/Auto-Hold Function Relative Min/Max Function Keys and Function Switch MatrixData Hold Auto-Hold Range Percent Power on Auto Power OffDisplay AudioCalibration Procedure Calibration and AdjustmentRequired Test Equipment Battery Replacement MaintenanceFuse Replacement Troubleshooting CleaningReplaceable Parts/Accessories Problem Possible Cause Suggested ActionSpecifications Range Resolution Accuracy Input ResistanceGeneral DC VoltageAC + DC Voltage rms responding, computed from acV, dcV DC Current, AC Current 40 Hz to 1 kHz, 5% to 100% of rangeResistance ContinuityDiode Frequency AC CoupledTemperature 5 kΩ @ 25C Thermistor probe Adjustments Calibration Table Step Function Range Input Signal AdjustmentLimit Counts Step Function Range Input Signal Replaceable Parts/Accessories Call out Description HP Part NumberDisassembly Conforms to the following Product Specifications Manufacturer’s NameManufacturer’s Address Declares, that the productsWhat is Covered Warranty/ServiceWhat is Not Covered