Pentax K-5 Operating Manual page 174

Raise the mirror up and open the shutter when cleaning the CMOS sensor
with a blower.
Please contact a PENTAX Service Center for professional cleaning
because the CMOS sensor is a precision part. Cleaning services involve
a fee.
You can use the optional Imagesensor Cleaning kit O-ICK1 (p.350) when
cleaning the CMOS sensor.
• Do not use a spray type blower.
• Do not perform Sensor Cleaning during Bulb shooting. The shutter may
accidentally close and may cause damage to the camera's internal parts.
• To prevent dirt and dust from accumulating on the CMOS sensor, keep the
lens mount cap on the camera when a lens is not attached.
• When the battery level is low. the message [Not enough battery power
remaining to clean sensor] is displayed on the monitor.
• It is recommended to use the AC adapter kit K-AC50 (optional) when cleaning
the sensor. If you are not using the AC adapter kit K-AC50. please install the
battery with ample capacity remaining. If the battery capacity becomes low
during cleaning, a warning beep will sound. In this case. stop cleaning
immediately.
• Do not put the tip of the blower inside the lens mount area. If the power is
turned off. this may cause damage to the shutter. CMOS sensor and the
mirror.
• The self-timer lamp blinks, and [MUP] and [Cln] appear on the LCD pane
while cleaning the sensor.
• This camera may generate a vibration sound while cleaning the CMOS
sensor. It is not a malfunction.
2
3
Turn the camera off and remove the lens.
Turn the camera on.
Select [Sensor Cleaning] in the [_ Set-up 4] menu and
press the four-way controller ( • ).
The
[Sensor
Cleaning] screen appears.