Brother HL-L9300CDW Service Manual page 351

2. PERIODICAL REPLACEMENT PARTS
2.1 Procedures to Replace Periodical Replacement Parts
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Preparation
Prior to proceeding with the disassembly procedure,
(1) Unplug
- the AC cord,
- the USB cable, if connected, and
- the LAN cable, if connected.
(2) Remove the Paper tray.
Main body
7-2
Paper tray
Confidential