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FIGURE F.8 – INPUT BOARD AND CONTACTOR
INPUT BOARD TEST PROCEDURE (CONTINUED)
PROCEDURE
1. Disconnect the input power to the POWER
WAVE 655/R.
2. Remove the case top.
3. Remove lead X4 from the coil terminal of main
input contactor CR1. Insulate lead X4. Refer to
Figure F.8.
4. Carefully apply input power to the POWER
WAVE 655/R.
ELECTRIC SHOCK can kill.
High voltage is present when input
power is applied to the machine.
5. Turn on the POWER WAVE 655/R. Carefully
test for the correct voltages according to Table
F.5.
6. Remove input power to the POWER WAVE
655/R. If any of the voltages are low or not pre-
sent, perform the Input Contactor Test. If that
checks out, the Input Board may by faulty.
7. Reconnect lead X4 to the main input contactor
CR1 coil terminal.
8. Carefully apply the correct input voltage to the
POWER WAVE 655/R.
9. Turn on the POWER WAVE 655/R. Check for
the presence of 24 VAC from lead X4 to lead
601. See Figure F. 9.
9. This 24 VAC is the coil voltage for main input
contactor CR1. It will normally be present
approximately 12 seconds after input line
switch (SW1) is activated.
10. If the voltage is not present, perform the
Auxiliary Transformer #1 Test.
11. Disconnect the input power and replace the
case top.
TROUBLESHOOTING & REPAIR
F-30 F-30
POWER WAVE 655/R
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INPUT
C
ONTACTOR
6
01
X
4
J
60
J
61
INPUT
PC BOARD
8 7 6 5
4 3 2 1
10 9 8 7 6
5 4 3 2 1
WARNING