Thermador SMW 272 B, Руководство по обслуживанию, Страница: 52 / 84

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SMW O ven Service Manual Lower O ven Section
REMOVIN G A RELAY BOARD
IMPORTAN T N OT E:
Repack the old boards in
the antistatic bags before returning them to a parts
distributor.
T he Oven Relay Boards are subject to fail-
ure if static electricity is transferred to the
solid state components during handling.
The
replacement boards are packaged in antistatic bags.
W hen removing the boards from their bags, use a
grounding strap, or touch a grounded metal sur-
face (appliance chassis) prior to handling the boards.
W hen you handle a board, handle it by the edges
of the plastic frame. D O N OT TO UCH the con-
nector pins or the microprocessor chip.
CAUTION
Lower Oven
Relay Board & Holder
2 Bottom
Screws
3 Front
Screws
2 Front
Screws
Front
Subpanel
Holders
In Slots
Refer to Figure 16 below, and Figure 17 on the
next page, for the following steps.
1. Turn off the electrical power to the oven.
2. O pen the upper oven door.
3. Remove the control panel and display head
from the oven (see Pages ?? and ?? for the
procedure).
4. Remove the front subpanel (see Figure 16).
5. Remove the wiring from the relay board (see
Figure 17).
6. Remove the screw from the board holder, slide
the holder to the right to unhook it from the
slot in the chassis, and remove the board and
holder.
7. Install the new relay board and holder and
reconnect the wiring.
8. Reassemble the oven.
TECH
TIP!!
The board and holder comes as an assem-
bly.
DO N OT
remove the relay boards from
their holders.
W hen you work on the oven, be careful
when handling t he sheet met al part s.
T here are sharp edges present and you
can cut yourself if you are not careful.
CAUTION
WARNING
Turn off the electrical power circuit to the
oven at the main junction box before ser-
vicing this unit.
Figure 16
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