First Edition: March 31, 2007
2-3 Checking the Interior (FX-951/FH-200)
2-3
Checking the Interior
Remove the cover and check the internal components for the following points:
(1) Measure the secondary voltage (ACV) of the transformer with the power turned on.
If the measured voltage is different from the values of the above table:
Replace the transformer.
(2) Check the surface of the P.W.B. (for control/connector) visually.
If abnormalities such as cracks and explosions are found on the components:
Replace faulty components.
If portions around the cracked or exploded components are burned:
Replace the whole P.W.B.
(3) Are the transformer and P.W.B. (for control/connector) correctly mounted?
If the parts are not installed correctly:
It may result in a failure. Mount the parts correctly.
(4) Is insulation on the lead wires damaged?
If the insulation is damaged:
Replace the damaged lead wires.
(5) Are there any failures in any of the soldered lead wires?
If a soldered section is faulty:
Repair each section.
CAUTION
Wear a wrist strap when following these procedures to prevent damage to the P.W.B.
100V
AC 24.3V to 29.7V
110V
120 V
220V
230V
240V
Measure the voltage
while touching the
tester to this section.
