Powermax30 XP Service Manual 808150 Revision 0 85
5 – Troubleshooting and System Tests
Test 8 – fan
Test the fan (M1) for proper operation.
1. Set the power switch to OFF (O), disconnect the power cord from the power source, and disconnect the gas supply.
2. Remove the power supply handle and cover. (See Remove the power supply cover on page 88.)
3. Remove the component barrier. (See Remove the component barrier on page 90.)
4. Place a jumper from ground (see Figure 11 on page 71) to pin 3 of J5 (see Figure 12 on page 72).
5. Reconnect the electrical power and set the power switch to ON (I).
6. If the fan does not operate, replace the fan. (See Replacing the fan on page 116.)
Figure 23
Because of protection features on the fan driver chip, this test can trigger a fault. You can
disregard this fault if it occurs as a result of a fan test. The purpose of the fan test is to
verify that the fan is operating properly, not to test the fan drive circuit.
WARNING!
ELECTRIC SHOCK CAN KILL
Use extreme caution when working near live electrical circuits. Dangerous
voltages exist inside the power supply that can cause serious injury or death.
See the WARNING! on page 58 before proceeding.
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