Vetronix mts 3100 mastertech, Operator'S Manual

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If You Are Having a Problem
Mastertech 3100 Operator’s Manual Page B-3
MASTERTECH DOES NOT PASS ALL SELF TESTS
Most Likely Cause
• Tester is not receiving power from vehicle.
• Loose connections.
• Program card is not installed.
• Tester is connected to the vehicle DLC.
• Cigarette lighter socket or plug fuse is blown.
Recommendations
• Check that the cable is securely attached to the tester.
• Check that the DLC cable connector pins are clean.
• Check the fuse for the cigarette lighter socket and the fuse in the cigarette lighter plug. Replace the fuses
if necessary.
• Double check that the appropriate test adapter (required for certain tests) is properly installed and
making good contact during the testing.
MASTERTECH FAILS TO POWER UP
Most Likely Cause
• DC power cable not making good contact.
• Vehicle cigarette lighter fuse is blown.
• Fuse in DC power cable cigarette lighter plug is blown.
Recommendations
• Disconnect and reconnect the DC power cord. Verify that the power cord is connected properly.
• Replace vehicle cigarette lighter fuse.
• Replace fuse in DC power cable cigarette lighter plug as follows:
a. Disconnect the DC power cable from the tester.
b. A 3A fuse is built into the power plug on the DC power cable.
• Check and replace the fuse as follows:
a. Remove the power plug cover and remove the fuse together with the spring. The spring and power
plug terminal can pop out so take care not to lose them.
b. Check the fuse and replace it if necessary.
c. Install the fuse and spring into the power plug.
d. Check that the power plug terminal is inside the power plug cover, then screw the cover onto the
power plug.