Page: 29Service Guide ML172/ML182 SeriesChapter 3 Printer Maintenance3.2.4 Power Supply Board1. Remove the upper cover (3.2.1 ).2. Remove the transformer assembly (3.2.3 ).3. Detach the power supply board (1) from the transformer (2) by pulling from the connection pins (3).CAUTION:When reassembling, place the Power Supply Board inside the guide (4).Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA BusinessPartner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)