Panasonic NN-CS894S Service Manual page 12

4.2.3. To replace Digital programmer
circuit D.P.C.(AU) board
CAUTION:
Be sure to ground any static electric charge built up in
your body before handling the D.P.C.
1. Release 7 catch hooks, then remove PCB cover.
2. Remove 4 screws holding D.P.C.(AU) board.
4.2.4. Low voltage transformer and/or
power relays
CAUTION:
Be sure to ground any static electric charge built up in
your body before handling the DPC.
1. Using solder wick or a desoldering tool and 30W soldering
iron carefully remove all solder from the terminal pins of the
low voltage transformer and/or power relays.
NOTE:
Do not use a soldering iron or desoldering tool of
more than 30 watts on D.P.C. contacts.
2. With all the terminal pins cleaned and separated from
D.P.C. contacts, remove the defective transformer/power
relays, Replace components making sure all terminal pins
are inserted completely resolder all terminal contacts
carefully.
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NN-CS894S