Clean sensor - HP LaserJet 9500n Printer

carefully remove it from the air tube and use a spray cleaner especially designed to clean the sensor any automotive store sarries it
How To Clean Mass Air Flow Sensor MAF How To Clean Mass Airflow Sensor In depth detailed version How to Clean Your MAF Sensor

• First clean the sensors
• If Problem persists change Pickup rubbers.
• If problem Occurs replace the pickups
• Check and clean the Pickup sensor
• Then check and clean registration(Steel rod) sensor
• Then check and clean Fixing unit sensor.
• And finally check and Clean the Delivery sensor.
• Don't use air blowers and Hard cleaners just use cotton and brush.

The sensor build limestone residue during operation and needs to be cleaned off. The bin sensors are typically located on either side of the freeze platens and can be removed to clean. Turn machine off and unplug. Reach in past the water trough and freeze platen and you will see the transmiter and receiver plugged into the side walls. Gentlely work sensor loose and work sensor wiring out hole until you can get to sensors. Clean the two sensor with a clean cloth and with vinegar until sensers are clean. Reinstall, and plug back in and start unit. Bin sensor light should be out and should start.

The upper and heated O2 sensors should not be cleaned as depending on the cleaner, can destroy them anyway, and the right cleaner for the component can't clean them well enough. It's best to buy new if the ECU kicks out 02 sensor code errors.

No. FixYa only provides online support, and we can't clean your sensor online. Any good camera shop should be able to clean the sensor for you, and/or sell you a sensor cleaning kit.

possible solutions are, a dirty maf sensor. remove manifold air flow sensor and clean it with maf sensor cleaner. you can buy a can at any auto parts store to clean, take off and clean maf sensor, do not touch inside of sensor it is very fragil. when cleaning sensor be sure it is dry before installing it back on vehicle. also check for a vacuum hose leak downstream of maf sensor.make sure air filter is clean. this usually takes care of the problem. po171 and po174 are the same. you can use electrical cleaner to clean sensor also. also check for a dirty fuel filter and fuel pressure, if needbe.

It can be dirty ID sensor it retires the image unit and it cleans it… This happens when mylar of the cleaning unit is damaged…

SC457 Position error for the image transfer belt’s cleaning unit

- Timing & Condition

• When the belt cleaning section touches the image transfer belt, but the belt cleaning sensor signal remains LOW.

• When the belt cleaning section releases from the image transfer belt, but the belt cleaning sensor remains HIGH.

• Dirty Sensor

• Defective sensor

• Defective belt cleaning shift clutch

• Defective drum peripheral component motor

• Defective I/O control board

• Defective main control board

1. Pull out and re-insert the image transfer belt unit.

2. Clean the image transfer belt cleaning H.P. sensor.

3. Replace the sensor. (Input Check: 5-803-012)

4. Replace the belt cleaning shift clutch.(Output Check: SP5-804-036)

5. Replace the drum peripheral component motor.

6. Replace the I/O control board.

7. Replace the main control board. [Signal Check]

• H.P.: CN219-B2 or TP108 on the I/O control board

The above information are taken from the service manual.

Good Luck!!!!!!!!!!!!!

Clean the sensor that is located inside this part.
Don't forget clean the LED in the middle and the Sensor in the sides.

The following is taken from the service manual I hope it helps Thanks J


SC457 Position error for
the image
transfer belt’s
cleaning unit
- Timing & Condition
• When the belt cleaning
section touches the
image transfer belt, but
the belt cleaning sensor
signal remains LOW.
• When the belt cleaning
section releases from the
image transfer belt, but
the belt cleaning sensor
remains HIGH.
• Dirty Sensor
• Defective sensor
• Defective belt cleaning
shift clutch
• Defective drum
peripheral component
motor
• Defective I/O control
board
• Defective main control
board
1. Pull out and re-insert the image transfer
belt unit.
2. Clean the image transfer belt cleaning
H.P. sensor.
3. Replace the sensor. (Input Check: 5-803-
012)
4. Replace the belt cleaning shift clutch.
(Output Check: SP5-804-036)
5. Replace the drum peripheral component
motor.
6. Replace the I/O control board.
7. Replace the main control board.
[Signal Check]
• H.P.: CN219-B2 or TP108 on the I/O
control board