Service Notes - SWR WorkingPro 400 Service Manual

1. TOP COVER REMOVAL is accomplished by
removing 10 flat-head screws from the top &
sides of the chassis. Then remove 4 hex cap
screws from the front panel.
2. WorkingPro MAIN PCB REMOVAL is accom-
plished by disconnecting the three ribbon
cables from the PCB Assembly. Disconnect the
chassis ground connection near the input by
removing the #6 nut from the chassis PEM.
Disconnect the power LED from the chassis by
either working the LED loose from the chassis
adhesive, or un-soldering the leads from the
board. Remove the knobs, nuts, & washers
from the 11 front panel controls. Remove the
nut & washer from the input jack.
3. WorkingPro I/O PCB REMOVAL is accom-
plished by removing the following items: two
screws at the XLR jack, 6 nuts & washers at the
1/4" jacks, 3 standoff screws behind the DIN
Parts marked with a single asterisk (
Lists are not field replaceable. If a failure due to
one of these components is detected, please

SERVICE NOTES

PCB EXCHANGE POLICY
) in the Part
*
WorkingPro™ 400 & 700
(This is the model name for warranty claims)
jack. Disconnect the two ribbon cables at the
PCB headers.
4. WorkingPro SPEAKER OUT PCB REMOVAL
is accomplished by removing the two fast-on
connections from the power amp, the nuts &
washers from the two 1/4" jacks, and three #6
standoff screws behind the PCB.
necessary to remove the power supply PCB in
order to remove this PCB.
5. WorkingPro POWER SUPPLY PCB RE-
MOVAL is accomplished by removing all fast-
on connections from the transformer & power
amp, the #8 nut from the chassis PEM at the
rectifier, and the two #6 standoff screws.
6. POWER MODULE REMOVAL is accomplished
by removing the cable from the 9 pin header, 7
fast-on connections, and 4 screws from the un-
derside of the chassis.
contact the FMIC Customer Service Department to
order the complete Assembly.
4
It may be