Ametek 2003RP User And Programming Manual page 65

7.4.1 Oscillator Module Removal/Replacement
If a fault is found that requires the replacement of the Oscillator Module (assemblies A2 and
A3) follow the following steps and refer to Figure 7-1 for the module locations:
1. Turn off the front panel circuit breaker. Remove the input power from the rear panel
terminal block.
2. Remove the top cover.
3. Remove the front panel knobs and nuts. The knobs are held in place with 1/16 inch
Allen screws. The nuts are removed with a 1/2 inch wrench.
4. Remove 4 screws that hold the Phase B/C board and the 5 screws that hold the
controller board to the front panel. The oscillator assembly can now be removed.
7.4.2 Amplifier Removal/Replacement
If a fault has been found that indicates the failure of an amplifier module (assemblies A7, A8,
A9), check the condition of the fuses in series with the +300VDC power supply before
replacing the amplifier. The associated fuses are F3 on the DC Supply board, A4, and F1
(Phase A), F2 (Phase B), and F3 (Phase C) on the Mother board, A5. Refer to Figure 7-1 for
the location of these fuses.
There are three stacked amplifier modules: Phase A on top, Phase B in the middle, Phase C
on the bottom.
If it is determined that an amplifier module must be replaced, perform the following
procedure:
1. Turn off the input circuit breaker.
2. Disconnect AC input power at the rear panel.
3. Remove the AC Power Source top cover by removing (17) #6-32 x 5/16" flathead
screws.
4. Remove an amplifier by lifting its outside edge slightly and withdraw it from the
connectors.
5. Amplifiers may be replaced by following this procedure in reverse order.
WARNING: Do not touch any parts inside the unit during this test, as they will be live
and dangerous. Always wear safety glasses.