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9

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Do not smoke, light a match, burn a candle, or otherwise have any type of open flame
near the automobile.

z

Take extra caution when working near ignition coils, ignition leads, and spark plug
sockets because these components are provided with high voltages when the
automobile is operating.

z

Pay close attention to the automotive manufacturer’s cautions, servicing notes and
procedures.

All of the information, explanations and detailed descriptions in the operation manual have
originated from the industrial information recently published. It is impossible to prove the
accuracy and completeness of the information, of which we shall not be responsible for the
assumption.

A.

The general automotive information in this guide is meant to helpfully diagnose fault

situations in automobiles. Because of the wide variety of makes and models of cars,
this information may not pertain to every vehicle. To confirm information or
questions on your specific vehichle and situation, please adhere to the following:

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Contact the local distributors, retailers, dealerships, and mechanics of automotive
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Reference material produced by manufactures or publishers that pertain your specific
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72-9280: OPERATING MANUAL

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Содержание 72-9280

Страница 1: ...P N 110401102827 72 9280 ...

Страница 2: ...Guide 7 International Electrical Symbols 11 The Meter Structure see figure 1 12 Rotary Switch 13 AC or DC Voltage Measurement 13 millvoltage Measurement 13 Resistance Measurement 13 Functional Buttons see figure 2 14 Display Symbols see figure 3 16 Measurement Operation 18 AC DC Voltage Testing 18 72 9280 OPERATING MANUAL ...

Страница 3: ... Hold 37 Range 38 Max Min 38 Data Outputting 38 Display backlight 39 The BLUE button 39 Automatic power off 39 Diagnosis of Automotive Troubles 39 Fuse Testing 39 Switch Testing 40 Solenoid or Relay Testing 40 Starting Charging System Testing 41 Battery Power Consumption Engine off 42 Trigger Voltage Battery Load Testing 44 General Specifications 69 72 9280 OPERATING MANUAL ...

Страница 4: ...3 Accuracy Specifications 70 Maintenance 77 General Service 77 Replacing the Fuses 77 Replacing the Battery 78 72 9280 OPERATING MANUAL ...

Страница 5: ... circuit with integrated A D converter as its core Spotting a unique design with an extra large LCD display Connect Test Leads display full overload protection and unique outlook design For this reason it emerges as an electric meter with more outstanding performance for safer operation than other meters In addition to the Dwell Tach and Data Hold feature the Meter can be used to test the AC DC vo...

Страница 6: ... 600V and double insulation CAT III Distribution level fixed installation with smaller transient overvoltages than CAT IV CAT IV Primary supply level overhead lines cable systems ets Use the Meter only as specified in this operating manual otherwise the protection provided by the Meter may be impaired Rules For Safe Operation Warning To avoid possible electric shock or personal injury and to avoid...

Страница 7: ...ween the terminals or between any terminal and grounding x To avoid injury or damage never attempt to input an effective voltage over 60V in DC or 30V in AC x Use the proper terminals function and range for your measurements x The rotary switch should be positioned in the correct setting and not be switched any time during the measurement x Disconnect circuit power and discharge all high voltage c...

Страница 8: ...sion or damage that can lead to electrical shock or other accident x Turn off the meter when it is not in use and take out the battery when not using for a long time x Routinely check the battery as it may leak after being installed for a long period of time replace the battery and clean the compartment and contacts as soon as leaking appears A leaking battery will damage the meter x Do not use or...

Страница 9: ... protective eyeglasses which meet safety requirements z Operate on automobiles in a well ventilated area to prevent exhaust inhalation z Keep all of your tools and testing instruments away from all hot components and moving devices of the operating engine z Ensure that the automobile is placed in park automatic transmission or put into neutral gear manual transmission and be sure that it is equipp...

Страница 10: ... the accuracy and completeness of the information of which we shall not be responsible for the assumption A The general automotive information in this guide is meant to helpfully diagnose fault situations in automobiles Because of the wide variety of makes and models of cars this information may not pertain to every vehicle To confirm information or questions on your specific vehichle and situatio...

Страница 11: ... the trouble lies 2 Do not try to find any short cut Take your time and adhere to repair directions in your vehicle s manual 3 Check any trouble with the air purifier or pipeline system 4 Check any damage to any sensor or the driving gear 5 Check the ignition lead any breakage of any terminal crack on any spark plug or breakage at the insulation of the ignition lead 6 Check all the vacuum hoses an...

Страница 12: ...rcuit connections any pin corrosion bend or damage inappropriate connection position or damaged electrode lead International Electrical Symbols AC Alternating Current DC Direct Current Ground V AC or DC Diode Double Insulated Deficiency of Built In Battery Fuse 72 9280 OPERATING MANUAL ...

Страница 13: ...12 Warning Refer to the Operating Manual Conforms to Standards of European Union The Meter Structure see figure 1 Figure 1 1 LCD display 2 Functional buttons 72 9280 OPERATING MANUAL ...

Страница 14: ...ted for information about the rotary switch positions Rotary Switch Position Function V AC or DC Voltage Measurement mV Millivoltage Measurement ȍ Resistance Measurement Capacitance measurement Continuity Test Diode Test Hz Frequency Measurement ȝA Current measurement unit ȝA 72 9280 OPERATING MANUAL ...

Страница 15: ...h testing Displayed Reading x 10 Unit rpm DWELL Automotive ignition dwell testing Unit degree Functional Buttons see figure 2 Below table indicated for information about the functional button operations Figure 2 Button Operation Performed POWER Turn the power on and off 72 9280 OPERATING MANUAL ...

Страница 16: ...tep the display through high MAX and low MIN readings at any time Hz z Press once to enter Frequency measurement mode z Press and hold for 2 seconds to enter RS232C or USB mode RANGE z Press RANGE to enter the manual ranging mode z Press and hold RANGE for 2 seconds to return to auto ranging mode z Under RPM or Dwell testing mode press RANGE to select 4CYL 6CYL or 8CYL SELECT Press SELECT to selec...

Страница 17: ... Figure 3 1 Data output is in progress 2 Low Battery Warning To avoid false readings which could lead to possible electric shock or personal injury replace the battery as soon as the battery indicator appears 72 9280 OPERATING MANUAL ...

Страница 18: ... of continuity 6 Indicates for DC voltage or current 7 Indicates for AC voltage or current 8 Indicates for dangers 9 Data hold is active 10 The meter is in Auto range mode 11 The meter is in Manual range mode 12 Indicates for 841000mV range 13 Test of DWL 72 9280 OPERATING MANUAL ...

Страница 19: ...re DC voltage connect the Meter as follows 1 nsert the red test lead into the V terminal and the black test lead into the COM terminal 2 Set the rotary switch to an appropriate measurement position in V press blue button to switch between AC and DC measurement mode 3 AC voltage measurement displays True RMS value Press Hz button to obtain the frequency value refer to accuracy specifications for ma...

Страница 20: ...easuring high voltages to avoid electric shock Ɣ In each range the Meter has an input impedance of approximately 10Mȍ this loading effect can cause measurement errors in high impedance circuits If the circuit impedance is less than or equal to 10kȍ the error is negligible 0 1 or less Ɣ When voltage measurement has been completed disconnect the testing leads and the circuit under test 72 9280 OPERA...

Страница 21: ...o the Meter from electric shock please do not attempt to measure voltages higher than the range although readings may be obtained When AC voltage measurement has been completed disconnect the connection between the testing leads and the circuit under test 72 9280 OPERATING MANUAL ...

Страница 22: ...al 2 Set the rotary switch to an appropriate measurement position in mV 3 Connect the test leads with the object being measured The measured value shows on the display Press Hz button to obtain the frequency value refer to accuracy specifications for maximum ranges 4 The Meter has an input impedance of approx 4000M Figure 5 72 9280 OPERATING MANUAL ...

Страница 23: ...witch to an appropriate measurement position in ȝA mA or A Press blue button to switch between AC and DC measurement mode 3 C current measurement displays true rms value Press Hz button to obtain the frequency value refer to accuracy specifications for maximum ranges 4 onnect the test leads with the object being measured The measured value shows on the display Note Ɣ If the value of the current to...

Страница 24: ...ng Warning To avoid damages to the Meter or to the devices under test disconnect circuit power and discharge all the high voltage capacitors before measuring resistance To avoid injury to yourself never attempt to input an effective voltage over 60V in DC or 30V in AC 72 9280 OPERATING MANUAL ...

Страница 25: ...ured The measured value shows on the display Note Ɣ When there is no input for example in an open circuit the Meter displays OL Ɣ If the resistance reading 0 5ȍ when you short circuit the leads please check for loose test leads or other reasons Ɣ For high resistance 1Mȍ it is normal to take several seconds to obtain a stable reading For better accuracy choose a shorter test lead Ɣ When resistance ...

Страница 26: ... the Meter and to the device under test disconnect circuit power and discharge all high voltage capacitors before testing diodes and continuity To avoid injury to yourself never attempt to input an effective voltage over 60V in DC or 30V in AC 72 9280 OPERATING MANUAL ...

Страница 27: ...being measured Ɣ The buzzer does not sound when the resistance value is 30ȍ The circuit is disconnected Ɣ The buzzer sounds continuously when the resistance value is 30ȍ The circuit is in good condition 4 The nearest value of the tested circuit is shown on the display in units ȍ Note Ɣ Open circuit voltage is approx 3V Ɣ When continuity testing has been completed disconnect the connection between ...

Страница 28: ...e Meter and to the device under test disconnect circuit power and discharge all high voltage capacitors before testing diodes and continuity To avoid injury to yourself never attempt to input an effective voltage over 60V in DC or 30V in AC 72 9280 OPERATING MANUAL ...

Страница 29: ...s anode and place the black test lead on the component s cathode The polarity of red test lead is while black test lead is 4 The measured value shows on the display Note Ɣ In a circuit a good diode should still produce a forward voltage drop reading of 0 5V to 0 8V However the reverse voltage drop reading can vary depending on the resistance of other pathways between the probe tips Connect the tes...

Страница 30: ...l display OL indicating open circuit or wrong polarity connection Ɣ When diode testing has been completed disconnect the connection between the testing leads and the circuit under test Figure 9 72 9280 OPERATING MANUAL ...

Страница 31: ...minal and the black test lead into the COM terminal 2 Set the rotary switch to and press BLUE button to select capacitance measurement mode 3 The measured value shows on the display Note Ɣ The LCD displays OL indicating the tested capacitor is shorted or it exceeds the maximum range Ɣ When capacitance measurement has been completed disconnect all connections between capacitor and the Meter 30 Capa...

Страница 32: ... the I Hz terminal and the black test lead into the COM terminal 2 Under AC DC voltage DC millivoltage or AC DC current measurement press Hz button to select frequency measurement mode the measured value shows on the display Press RANGE to select next range and the maximum range is 1MHz 72 9280 OPERATING MANUAL ...

Страница 33: ...ons for maximum ranges Ɣ When frequency measurement has been completed disconnect the connection between the testing leads and the circuit under test and remove the testing leads from the input terminals of the Meter 72 9280 OPERATING MANUAL ...

Страница 34: ...33 Figure 11 72 9280 OPERATING MANUAL ...

Страница 35: ...34 Dwell Testing Figure 13 72 9280 OPERATING MANUAL ...

Страница 36: ...o the COM terminal Connect the ends to be tested as illustrated If the cut off switch of an ignition system is tested connect the red test lead probe to the primary negative end of the ignition coil Refer to the automotive servicing manual for the specific position If the dwell of an arbitrary ON OFF equipment is tested connect the red probe to the end of the equipment fixed with an ON OFF switch ...

Страница 37: ...stem with a distributor board is used in the automobile connect the red test lead probe to the primary negative end of the ignition coil Refer to the automotive servicing manual for the specific position 3 Connect the black test lead probe to the good ground terminal of the automobile 4 Upon the start of the engine or during its operation test the rotation speed of the engine and read the displaye...

Страница 38: ...37 Figure 14 Hold The Hold mode is applicable to all measurement functions Ɣ Press HOLD to enter Hold mode and save the present reading 72 9280 OPERATING MANUAL ...

Страница 39: ... MAX MIN to start recording of maximum and minimum values Steps the display through high MAX and low MIN readings The Meter enters manual ranging mode after pressing MAX MIN button Ɣ Press and hold MAX MIN for over 2 seconds to exit Max Min mode and return to the present measurement range Data Outputting Ɣ Press and hold Hz button for over 2 seconds to enter Data output mode Ɣ The sleep mode featu...

Страница 40: ...ically if you have not changed the rotary switch or pressed a button for 15 minutes Part 2 Diagnosis of Automotive Troubles The Meter is a tool for the very effective diagnosis of the troubles with the electronic systems of the automobile This part gives a special introduction as to how the Meter is used to diagnose any trouble with a fuse switch solenoid relay starting and charging systems igniti...

Страница 41: ...when the reading of the meter should be displayed less than 10 indicating that the fuse is good When the display is overload OL it is shown that the fuse has been blown out Warning z It must be replaced with a fuse of the same type and size Switch Testing 1 The same as in Items 1 to 3 of Fuse Testing 2 Connect the black test lead probe to one end of the switch and the red one to another end When t...

Страница 42: ...d The relay may be welded or worn due to the frequent sparking of the contacts The solenoid may be stuck when the coil is in an on position Therefore some potential problems cannot be found in testing Starting Charging System Testing The on off function of the engine starting system consists of a battery engine starting button solenoid and relay starting buttons lead connections and lines During t...

Страница 43: ...ad probe to the negative pole of the battery and the red one to the positive pole of the battery 2 The testing results are shown in contrast as follows and if the battery is less than 100 please use it after charging it 12 60 V 100 12 45 V 75 12 30 V 50 12 15 v 25 Battery Power Consumption Engine off The test is carried out to find the amperage of the power consumption of the battery when both the...

Страница 44: ...t the test lead probes to the circuit Connect the red test lead probe to the positive pole of the battery and the black one to the negative pole of the battery Warning z Do not start the engine of the automobile during testing or the meter will be damaged 4 Read the reading of the tested current directly from the display with the normal current being about 100mA For the special supply of currents ...

Страница 45: ...to interrupt the ignition system Operate according to the automotive manual 4 Connect the black test lead probe to the negative pole of the battery and the red one to the positive pole of the battery 5 Start the engine continuously for 15 seconds and the testing results are shown in contrast as follows If it is within the range the starting system is normal on the contrary it is shown that there m...

Страница 46: ...rict the currents upon the start of the engine leading to the reduction of the load voltage of the battery and the slow down of the start of the engine 1 Cut off the ignition system so as to disable the start of the automobile Cut off the main ignition coil shunt coil cam and starting sensor so as to cut off the ignition system Operate by reference to the automotive manual 2 Set the rotary switch ...

Страница 47: ...Refer to the LOSS typical trigger voltage circuit See figure 15 Test the voltage between any of the following pairs of points respectively 1 2 2 3 4 5 5 6 6 7 7 8 8 9 8 10 Figure 15 Component Voltage Switch 300 mV 72 9280 OPERATING MANUAL ...

Страница 48: ... the electronic systems with adequate power lamps electric fans radio sets etc 1 Set the rotary switch to the DCV Insert the red test lead into the A terminal and the black one into the COM terminal 2 Connect the black test lead probe to the negative pole of the battery and the red one to the positive pole of the battery 3 Run the engine idle and close or turn off all the accessories with the norm...

Страница 49: ...ate automotive manuals Ignition Coil Testing 1 Before the operation cool the engine and cut off the ignition coil 2 Set the rotary switch to the Insert the red test lead into the terminal and the black one into the COM terminal Test the primary coil of the ignition coil 3 Short circuit the red and black test lead probes Their short circuit resistance should be less than 0 5 If it is more check the...

Страница 50: ...g z The reading of the testing becomes the actual tested resistance only after the reduction of the short circuit values of the test leads z The primary resistance is generally between 0 3 and 2 0 72 9280 OPERATING MANUAL ...

Страница 51: ...ils 7 The primary resistance is generally in a range of 6 k to 30 k Refer to various kinds of automotive manuals for the details 8 For a heater ignition coil repeat the said testing steps Warning For a heater ignition coil the resistance may be a little higher because the resistance of a coil will vary with the temperatures The higher the temperature the resistance will be higher on the contrary i...

Страница 52: ...nuals for the details Warning Some of Chrysler s products use a spark plug high voltage damper with positive lock end electrodes which can only be moved out of the distributor board If it is moved out of anywhere else damage will occur Refer to the appropriate automotive manuals for the Ignition System High Voltage Damper Testing 72 9280 OPERATING MANUAL ...

Страница 53: ...OM terminal 3 Connect the red and black test lead probes in parallel to the two ends of the high voltage damper and observe the reading The normal resistance is generally in a range of 3 k to 50 k In bending the lead the reading should remain unchanged Hall Switch Sensor Testing Figure 18 72 9280 OPERATING MANUAL ...

Страница 54: ... to the ground end of the sensor by referring the details to the positions of the source and ground ends of the sensor in various kinds of automotive manuals 3 Set the rotary switch of the meter to Insert the red test lead into the terminal and the black one into the COM terminal 4 Connect the red and black test lead probes in parallel to the signal connect terminal and ground end of the sensor an...

Страница 55: ...e of a Hall sensor and the testing methods of both sensors are also similar Their normal resistance is generally in a range of 150 to 1 k Refer to the ranges of resistance in various kinds of automotive manuals for the details Magnetic Resistance Sensor 72 9280 OPERATING MANUAL ...

Страница 56: ...nd the black one into the COM terminal 3 Connect the black test lead probe to the ground i e ground strap connection of the automobile and the red one to the appropriate testing test terminal of the computer of the automobile if the automobile is in a DIS type Refer to the servicing handbooks of various kinds of automotive RPM Testing 72 9280 OPERATING MANUAL ...

Страница 57: ...curate engine fuel control to a low injection automobile Since 1980 the automotive manufacturing industry has used electronically controlled carburetor and fuel injection so as to achieve lower fuel injection 1 GM General Motor Testing the dwell of the C 3 mixed control solenoid Place the solenoid in a cylinder monitoring the ratio between the air and the fuel which should generally be 14 7 to 1 b...

Страница 58: ...ll of the meter should be displayed between 10 and 50 Fuel Injector Resistance Testing Figure 21 The testing method is similar to that of the resistance of an ignition coil 1 Disconnect the electrical link from the injector Refer to the appropriate automotive service 72 9280 OPERATING MANUAL ...

Страница 59: ...r the detailed position 2 Connect the red and black test lead probes to the two ends of the injector The general normal resistance is less than or equal to 10 Engine Sensor Testing Figure 22 72 9280 OPERATING MANUAL ...

Страница 60: ...io between the air and the fuel according to voltage There are normally two types of oxygen sensors the zirconia and titania sensors Refer to the different external properties of the two types for the details Testing Procedure 1 Remove the oxygen sensor from the automobile 2 Set the rotary switch to Insert the red test lead into the terminal and the black one into the COM terminal 3 Connect the bl...

Страница 61: ...facturer The ZIRCONIA sensor is tested with the DCV Insert the red test lead into the V terminal and insert the black test lead into the COM terminal The TITANIA sensor is tested with the Insert the red test lead into the terminal and insert the black test lead into the COM terminal Secure the sensor with a table vice using a propane or similar burner and add heat to sensor terminal Increase the t...

Страница 62: ...ate time to cool before further testing Keep all flammable materials away from the testing area Temperature Sensor The temperature sensor changes the output resistance through the changes in peripheral temperatures The hotter the sensor is the lower the resistance becomes The temperature sensor is generally used in engine braking air ventilation flow fuel temperature and other equipment 72 9280 OP...

Страница 63: ...ame as in the resistance testing method 2 When the general temperature of a sensor rises its resistance will drop The thermal resistance of the temperature sensor of the automotive engine is generally less than 300 72 9280 OPERATING MANUAL ...

Страница 64: ...r the computer monitoring of the position and direction of a mechanical device The typical position sensors include throttle exhaust recalculating EGR blade air flow and other sensors Testing Procedure 1 The same as in the resistance testing method Position Sensor 72 9280 OPERATING MANUAL ...

Страница 65: ...est lead probes respectively to the signal test terminal and ground terminal Refer to various automotive servicing manuals for its position and the resistance to be tested Absolute Pressure MAP and Baro Sensor 72 9280 OPERATING MANUAL ...

Страница 66: ...65 Figure 25 Absolute Pressure MAP and Baro Sensor 72 9280 OPERATING MANUAL ...

Страница 67: ...inders in the automobile 3 Taking 4 cylinders 4CYL for example connect the black test lead probe of the meter to the ground terminal i e ground strap connection and connect the red one as illustrated in figure 25 4 Turn on the ignition key but do not start the engine Displayed Values DC Voltage Type Sensor In a vacuum state the displayed value is generally between 3 V and 5 V The details shall be ...

Страница 68: ...67 Warning z RPM Frequency 120 the number of cylinders Mass Air Flow MAF Sensor Figure 26 72 9280 OPERATING MANUAL ...

Страница 69: ...ct the black test lead probe of the meter to the ground terminal i e ground strap connection and connect the red one as illustrated in figure 25 3 Turn on the ignition key but do not start the engine 4 Displayed Values DC Voltage Type Sensor The displayed value should be less than or equal to 1V The details shall be based on the parameters furnished by the supplier Frequency Type Sensor In a vacuu...

Страница 70: ... Speed Updates 2 3 times second z Range Auto or manual z Polarity Display Auto z Overload Display OL z Battery Deficiency Display z Temperature Operating 0 C 40 C 32 F 104 F Storage 10 C 50 C 14 F 122 F z Relative Humidity d75 0 C to 30 C d 50 30 C to 40 C z Altitude Operating 2000m Storage 10000m z Electromagnetic Compatibility EN61326 1 2006 EN61326 2 2006 z Battery Type 9V NEDA1604 or 6F22 or 0...

Страница 71: ...8qC to 28qC Relative Humidity No more than 75 RH 1 DC Voltage Range Resolution Accuracy Overload Protection 4V 1 mV 40V 10 mV 400V 100 mV 1000V 1 V r 0 5 3 1000V DC AC Note Input impedance Around 10Mȍ 2 AC Voltage Range Resolution Accuracy 40Hz 400Hz Accuracy 400Hz 1kHz 4V 1mV 40V 10mV 400V 100mV r 1 3 r 2 3 1000V 1V r 1 2 5 r 2 5 Note z Input impedance Around 10Mȍ 72 9280 OPERATING MANUAL ...

Страница 72: ... 8 3 500AC Note Input impedance Around 4000Mȍ 4 DC Current Range Resolution Accuracy Overload Protection 400ȝA 0 1ȝA 4000ȝA 1ȝA r 1 2 40mA 10ȝA 400mA 100ȝA r 1 2 3 Fuse 1A H 240V fast type ĳ6x25mm 4A 1mA 10A 10 mA r 1 5 3 Fuse 10A H 240V fast type ĳ6x25mm Note z When measuring 5 to 10A For continuous measurement d10 seconds and interval time between 2 measurement greater than 15 minutes 72 9280 OP...

Страница 73: ...0mA r 2 5 r 2 10 Note z Fuse Protection of ȝA mA terminal 1A H 240V fast type ĳ6x25mm z Fuse Protection of A terminal 10A H 240V fast type ĳ6x25mm z Displays effective value of sine wave TRMS 10 100 of the range z When measuring 5 to 10A For continuous measurement d10 seconds and interval time between 2 measurement greater than 15 minutes 72 9280 OPERATING MANUAL ...

Страница 74: ...n 400 0 1 4k 1 40k 10 400k 100 4M 1k r 1 5 40M 10k r 1 5 5 500Vp 7 Capacitance Range Resolution Accuracy Overload Protection 10nF 10pF 100nF 100pF 1000nF 1nF 10ȝF 10nF 100ȝF 100nF r 3 5 500Vp 8 Frequency Range Accuracy 10Hz 1MHz r 0 1 4 72 9280 OPERATING MANUAL ...

Страница 75: ...Hz for reference only 2 AC DC Current mode When 40Hz 1KHz a range x 10 except 10 A range a 4A 10 A range When 10Hz 40Hz or 1k Hz 1MHz for reference only 3 DC millvoltage mode When 100KHz 40mV a 200V rms When 10Hz 1MHz 1MHz 200mV a 10V rms 9 Diode Range Resolution Overload Protection 1mV 500Vp Note z Open circuit voltage approximate 3V z The silicon PN junction normal voltage is about 500 mV to 800...

Страница 76: ...d when the resistance value is 30ȍ The circuit is disconnected z The buzzer sounds continuously when the resistance value is 30ȍ The circuit is in good condition 11 Dwell Testing Range Resolution Accuracy Overload Protection 4CYL 6CYL 8CYL 0 1q r 3 5 500 Vp Note z Input Scope 10V in forward impulse Bandwidth 0 5mS 72 9280 OPERATING MANUAL ...

Страница 77: ...peed Testing Range Resolution Accuracy Overload Protection 4CYL 6CYL 8CYL 10 RPM 3 5 500 Vp Note Input Scope 10V in forward impulse Bandwidth 0 5mS Maximum Tach 10000 RPM Tach Displayed Reading x 10 72 9280 OPERATING MANUAL ...

Страница 78: ...Service Periodically wipe the case with a damp cloth and mild detergent Do not use abrasives or solvents To clean the terminals with cotton bar with detergent as dirt or moisture in the terminals can affect readings Turn the Meter off when it is not in use and take out the battery when not using for a long time Do not store the Meter in a place of humidity high temperature explosive inflammable an...

Страница 79: ...Y replacement fuses with the identical type and specification as follows and make sure the fuse is fixed firmly in the bracket Fuse 1 1A H 240V fast type ĳ6x25 mm Fuse 2 10A H 240V fast type ĳ6x25 mm 6 Rejoin the case bottom and case top and reinstall the 3 screws and holster Replacement of the fuses is seldom required Burning of a fuse always results from improper operation Replacing the Battery ...

Страница 80: ...the holster 3 Remove the screw from the battery compartment and open the battery compartment 4 Take out the battery and replace with a new 9V battery 5 Rejoin the battery compartment and the case bottom and reinstall the screw and the holster Figure 27 This operating manual is subject to change without notice 72 9280 OPERATING MANUAL ...

Страница 81: ...80 Copyright 2011 Tenma All rights reserved Manufacturer Tenma Test Equipment 405 S Pioneer Blvd Springboro OH 45066 www tenma com 72 9280 OPERATING MANUAL ...

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