Brother HL-2400C Service Manual page 347

USER'S GUIDE
Radio Interference(220-240 V model only)
IEC 825 Specification (220-240 V model only)
xvi
This printer complies with EN55022(CISPR Publication 22)/Class B.
Before this product is used, ensure that you use a double-shielded
interface cable with twisted-pair conductors and that is marked
"IEEE1284 compliant". The cable must not exceed 1.8 metres in length.
This printer is a Class 1 laser product as defined in IEC 825
specifications. The label shown below is attached in countries where
required.
This printer has a Class 3B Laser Diode which emits invisible laser
radiation in the Scanner Unit. The Scanner Unit should not be opened
under any circumstances.
Caution:
Use of controls, adjustments or performance of
procedures other than those specified in this manual
may result in
The following caution label is attached on the cover of the scanner unit.
hazardous radiation exposure.