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TROUBLESHOOTING & REPAIR | |||
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MAIN INVERTER BOARD VOLTAGE TEST (CONTINUED)
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TEST PROCEDURE
1.Remove input power to the
2.Remove carrying handle using a 4mm allen wrench.
3.Using a crescent wrench, carefully remove the plastic nut from around the
pressure regulator located on the top of the machine.
4.Using a 7mm nut driver, remove the case wraparound.
5.Perform the Capacitor Discharge Procedure detailed earlier in this section.
6.Visually check for burned or damaged components on the input board. If any components are physically damaged or determined to be faulty (except the fuse) the input board should be replaced.
7.Apply the correct input power to the
8.Carefully test for approximately 300VDC at the P1 bridge terminals.
See Figure F.8. This represents the rectified voltage supplied from the input board. See the Wiring Diagram.
9.Carefully test for approximately 15VAC at the test points on bridge P2. This is the control supply voltage from the input board. See Figure F.8. See the Wiring Diagram.
10.Carefully test for 12VDC at test points C17. See Figure F.8. See Wiring Diagram. This is the rectified and regulated DC supply voltage for the inverter board control circuitry.
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Figure F.8. Test Points
P2 P1
| AC |
| + |
C18 | + |
| |
C17 | + |
| AC |
LEAD 2 (NZL) |
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WRK | C19 C7 |
LEAD 3 (EL) | |
Plug J1 |
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| Harness |
| Plug |
RIGHT SIDE OF MACHINE
