HP 39g+ - Manual (Page 256)

R-2 Reference information
LED safety
The infrared port located on the top of the calculator is
classified as a Class 1 LED (light emitting diode) device
according to International Standard IEC 825-1 (EN 60825-1.
This device is not considered harmful, but the following
precautions are recommended:
• Do not attempt to make any adjustments to the unit.
• Avoid direct eye exposure to the infrared LED beam. Be
aware that the beam is invisible light and cannot be seen.
• Do not attempt to view the infrared LED beam with any
type of optical device.
Warranty
HP 39G/40G Graphical Calculator
Warranty period: 12 months
1. HP warrants to you, the end-user customer, that HP
hardware, accessories and supplies will be free from
defects in materials and workmanship after the date of
purchase, for the period specified above. If HP receives
notice of such defects during the warranty period, HP
will, at its option, either repair or replace products which
prove to be defective. Replacement products may be
either new or like-new.
2. HP warrants to you that HP software will not fail to
execute its programming instructions after the date of
purchase, for the period specified above, due to defects in
material and workmanship when properly installed and
used. If HP receives notice of such defects during the
warranty period, HP will replace software media which
does not execute its programming instructions due to
such defects.
CLASS 1 LED PRODUCT
LEDSCHÜTZKLASSE 1 PRODUKT