Read Sharp PN-U473 (serv.man2) Service Manual online
PN-U523/U473/U423 DISASSEMBLY AND ASSEMBLY 6 - 9
7.
SPEED RELAY PWB
PN-U473 only
1)Remove the rear cover.
2)Remove the connector(x3)/
3)Remove the screws(x4), and speed relay PWB.
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