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F-49 F-49
CONTROL PC BOARD TEST (continued)
FIGURE F.16 – CONTROL PC BOARD PLUG DETAILS
PLUG J13 LOCATION
RESISTOR TEST POINTS
(Control Board Area Enlarged)
TROUBLESHOOTING & REPAIR
6. Check the test points for the appropriate
voltages. See Figure F.16.
• If the correct voltages are applied to the
control PC board and the correct voltage
signals are NOT being generated by the
control PC board, the control PC board may
be faulty.
• If the correct voltages are NOT being
applied to the control PC board, the power
PC board or the control transformer may be
faulty.
7. After the tests are completed and the prob-
lem repaired, install the front control panel,
using the 5/16” nut driver.
SQUARE WAVE TIG 355
R66
R8
R13
R32
R11
•
•
•••
910 8 7 6
CONTROL
G2512-[ ]
J12
J13
J14
J13
21
34
5