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5. Change the nominated stabilization voltage from 13.2 up to 15V with REGULATION GC knob. The
measured stabilization voltage rate shall change in proportion to the nominated one.
6. For the voltage regulators of P-D types, disconnect ST cable from voltage regulator. P value
shall be equal to 0. Connect ST cable back - P value shall become the previous.
7. Failure to comply with the one of the paragraphs 4 – 6 indicates the voltage regulator defects.
8. Press Voltage regulator tester button to exit the diagnostics mode. Disconnect the cables from
voltage regulator.
6.4.3. COM voltage regulator diagnostics
1. Connect voltage regulator with the bench diagnostic outputs, except B+ output.
2. Turn on the mode of the diagnostics of voltage regulator s pressing the button Voltage regulator
tester.
3. Choose the nominated voltage of the diagnosed voltage regulator pressing 12V button.
4. Connect the bench diagnostic output B+ with the corresponding voltage regulator terminal.
4.1. Wait until the bench reads the voltage regulator data, and proceed the diagnostics.
4.2. The stabilization voltage rate shall reach the nominated value with the possible deviation -
0.2V. There shall not be any values in ERROR sector.
5. Change the nominated stabilization voltage from 13.2 up to 15V with REGULATION GC knob. The
measured stabilization voltage rate shall change in proportion to the nominated one.
6. Disconnect ST cable from voltage regulator. ME shall appear in ERROR sector. Connect ST cable
back - ME shall disappear.
7. Disconnect one FLD cable from voltage regulator. EL shall appear in ERROR sector. Connect FLD
cable back - EL shall disappear.
8. Failure to comply with the one of the paragraphs 4.1 – 7 indicates the voltage regulator defects.
9. Press Voltage regulator tester button to exit the diagnostics mode. Disconnect the cables from
voltage regulator.
4.5. Starter diagnostics
1. Mount the starter on the working spot.
2. Fix the unit on the working spot.
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