Sealey TA102 - Manual (Page 3)

4.6. Transistor measurement
4.6.1. Determine whether the transistor to be tested is NPN or PNP and locate the E, B and C leads. Insert the leads into the respective slots in the testing
socket located on the front of the analyser.
4.6.2. turn the function dial to the hFE position and switch the analyser on.
4.6.3. the approximate hFE value of the transistor will be shown on the display, at the test condition of base current 10uA and Vce 3V.
4.7. Resistance measurement
4.7.1. Insert the black test lead into the negative COM socket and the red test lead into the positive socket.
4.7.2. turn the function dial to the desired Ω position and switch the analyser on.
4.7.3. Connect the test leads to the resistor to be tested and read the value on the display.
4.8. Audible Continuity Test
4.8.1. Insert the black test lead into the negative COM socket and the red test lead into the positive socket.
4.8.2. turn the function dial to the position and switch the analyser on.
4.8.3. Connect the test leads to the two terminals of the circuit to be tested.
4.8.4. If the resistance is less than 30Ω, then an audible warning will be given.
4.9. Frequency measurement
4.9.1. Insert the black test lead into the negative COM socket and the red test lead into the positive socket.
4.9.2. turn the function dial to the Hz 20k position and switch the analyser on.
4.9.3. Connect the test leads to the source or load to be measured and read the value on the display.
4.10. Temperature measurement
4.10.1. Insert the type K thermocouple plug into the temperature socket on the front of the analyser, ensuring the positive ‘+’ pin on the plug is inserted into the
positive slot, and the negative ‘-’ pin on the plug is inserted into the negative slot.
4.10.2. turn the function dial to the °C or °F position and switch the analyser on.
4.10.3. Place the thermocouple on the item to be measured and read the temperature on the display.
4.11. RPm (Tachometer) measurement
4.11.1. Insert the black test lead into the negative COM socket and the red test lead into the positive socket.
4.11.2. turn the function dial to the desired position, according to the number of cylinders of the engine being tested, and switch the analyser on.
4.11.3. If the vehicle uses a DIS ignition system with no distributor, connect the red test lead to the tACH (tachometer) signal line (which is connected to the
computer DIS module of the engine). If the vehicle uses an ignition system with a distributor, connect the red test lead to the primary negative end of the
ignition coil. Connect the black test lead to an earthing point, or the negative terminal of the vehicle battery.
Note: refer to the vehicle manufacturer’s manual for the specific location and more details.
4.11.4. Start the engine and the rPM will be shown on the display.
4.12. Dwell Angle measurement
4.12.1. Insert the black test lead into the negative COM socket and the red test lead into the positive socket.
4.12.2. turn the function dial to the position that corresponds with the correct number of cylinders for the engine being tested and switch the analyser on.
4.12.3. If the vehicle uses a DIS ignition system with no distributor, connect the red test lead to the tACH (tachometer) signal line (which is connected to the
computer DIS module of the engine). If the vehicle uses an ignition system with a distributor, connect the red test lead to the primary negative end of the
ignition coil. Connect the black test lead to an earthing point, or the negative terminal of the vehicle battery.
Note: refer to the vehicle manufacturer’s manual for the specific location and more details.
4.12.4. Start the engine and the dwell angle will be shown on the display.
Note: refer to vehicle manufacturer’s manual for detailed procedures for dwell angle settings and adjustments.
4.13. Replacing The Battery
 WARNING! To avoid electric shock, disconnect the test leads from any source of voltage and from the analyser before removing the rear cover.
4.13.1. When the battery drops below the operating voltage, the symbol will appear in the display. replace the battery.
4.13.2. remove the analyser from its protective case.
4.13.3. Loosen and remove the two screws using a Phillips screwdriver, and remove the rear cover from the analyser.
4.13.4. remove the old battery (PP3) and insert a new one, observing the correct polarity.
4.13.5. replace the rear cover and secure with the two screws.

WARNING! To avoid electric shock, DO NOT operate the analyser until it has been fully re-assembled.
4.14. Replacing The Fuse
 WARNING! To avoid electric shock, disconnect the test leads from any source of voltage and from the analyser before removing the fuses.
4.14.1. remove the analyser from its protective case.
4.14.2. Loosen and remove the two screws using a Phillips screwdriver, and remove the rear cover from the analyser.
4.14.3. Loosen and remove the six small screws from the upper circuit board and remove the board to gain access to the fuse holder.
4.14.4. remove the old fuse from its holder by gently pulling it out.
4.14.5. Install the new fuse into its holder.
Note: Always use a fuse of the correct size and value, 250mA/250V.
4.14.6. replace the rear cover and secure with the screws.

WARNING! To avoid electric shock, DO NOT operate the analyser until it has been fully re-assembled.
5. mAINTENANCE
 WARNING! DO NOT attempt to repair or service the analyser unless qualified to do so and have the relevant calibration, performance test,
and service information to hand. to avoid electrical shock or damage to the analyser do not get water inside the case.
5.1. Periodically wipe the case with a damp cloth and mild detergent. Do not use solvents.
5.2. turn the analyser off when not in use and remove the battery if stored for a long period of time.
5.3. Do not store the analyser in a place of high humidity or high temperature.
6. PARTS LIST
Item Description Parts
1. tA101.01 tESt LEADS
2. tA101.02 9V BAttErY
3. tA101.03 tHErMOCOUPLE ‘K’ tYPE
© Jack Sealey Limited tA102 Issue No: 4(I) - 16/06/14
Original Language Version