INVERTEC V300-I
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F-21
TROUBLESHOOTING & REPAIR
4. Using an ohmmeter, perform the
Resistance Tests detailed in Table F.3
and shown in Figure F.12. If any test
fails, replace both Switch Boards. See
Switch Board replacement procedure.
5. If the Switch Boards appear to be burned
or overheated, or if the machine was
supplied by a 380 VAC or higher voltage
supply when the failure occurred, replace
the Capacitors and the Switch Boards.
TEST PROCEDURE
1. Disconnect power to the machine and
discharge Capacitors as described on
Maintenance section.
2. Disconnect all wiring harness leads
(401/403, 1/8, 9, 12, 4/5, 402/404) from
the PC board.
3. Fold the leads up so they do not interfere
with the exposed PC board terminals.
See Figure F.12.
SWITCH BOARD TEST
(continued)
FIGURE F.12 — SWITCH BOARD RESISTANCE TEST.
