Brother HL-3400CN Series User Manual page 30

The following figure details the recommended area around the printer for proper
ventilation, operation and maintenance.
Rear
10cm (4")
80cm(32")
Media Cassette
Front
Fig. 1-1 Recommended area around the Printer
Note
Ensure that there is enough space behind the printer so that you can
easily access the rear cover or Duplex unit if a paper jam occurs.
Make sure that the Paper Cassette does not extend past the edge of
the table where the printer is installed.
20cm(8")
Table
Printer
70cm(28")
20cm(8")
70cm(28"
CHAPTER 1 INTRODUCTION
50cm (20")
1-9