Ricoh Aficio MP 171SPF AW110037, AW110038 Thermostat Replacement Procedure

 

Ricoh Aficio MP 171SPF AW110037, AW110038 Thermostat Replacement Instructions

Below you will find the illustrated Ricoh Aficio MP 171SPF AW110037, AW110038 Thermostat Replacement instructions. Below you will find a link to order in a replacement Thermostat and the illustrated instructions on how to replace it in your machine.

This machine has two thermostats. One is meant to blow open first and the second one is in case the first one fails. Typically if I get a fuser error and reset it and get a fuser error again the thermostats are the first things I check. These thermostats can be reset by blowing them with a can of air upside down or if you can flip the metal piece in the front of them back out. However, the manufacture strongly recommends replacing them if they open and stay open. How do you know if it is open. Take a volt meter to it and test it for continuity. If it has continuity across the leads then it is closed and functioning. If you don’t get continuity it is open.

Ricoh Aficio MP 171SPF AW110037, AW110038 Thermostat
Part Numbers
Thermistor B in the diagram 160 C = AW110037
Thermistor A in the diagram 170 C = AW110038

1. Ricoh Aficio MP 171SPF FUSING UNIT
CAUTION : Before handling the fusing unit, make sure that the unit is cool enough. The fusing unit can be very hot.
1. Copy tray

2. Open the right door.
3. Connector cover [A] (! x 1)
NOTE: When reinstalling, attach the ground wire.
4. Fusing unit [B] (! x 2, ” x 4)

2. Ricoh Aficio MP 171SPF EXIT SENSOR
1. Fusing unit
2. Exit sensor [A] (” × 1)

3-4. Ricoh Aficio MP 171SPF HOT ROLLER STRIPPER PAWLS
CAUTION: Do not damage the hot roller stripper pawls and the tension springs.
1. Fusing unit
2. Separate the fusing unit into two sections: the hot roller section [A] and the pressure roller section [B]
NOTE: After removing the screws, lower the pressure roller section about halfway and then slide it toward the front side to detach it.
3. Support rollers [C]
4. Hot roller stripper pawls [D]
NOTE: Remove the spacer [E] if you are removing the hot roller assembly

5-6. Ricoh Aficio MP 171SPF HOT ROLLER & FUSING LAMP
CAUTION: Do not touch the fusing lamp and rollers with your bare hands.
1. Hot roller stripper pawls and spacers
2. Hot roller assembly [A] (! x 2)
3. Fusing lamp [B]
NOTE: When reassembling, check that the direction of the fusing lamp is correct [C][D].
4. Hot roller [C] (2 C-rings, 1 spacer, 1 gear, 2 bushings, 1 cover [D])
Reassembling Use caution:
• The fusing lamp is positioned correctly.
• The fusing lamp does not touch the internal part of the hot roller.

7. Ricoh Aficio MP 171SPF THERMO-SWITCH AND THERMISTOR
1. Hot roller assembly
2. Thermo-switches [A][B] (! x 2 for each)
3. Thermistor [C] (! x 1)
Reassembling : Make sure the following:
• The thermistor is in contact with the hot roller.
• The hot roller turns smoothly.

Ricoh Aficio MP 171SPF AW110037, AW110038 Thermostat Replacement Instructions – Illustrated

Ricoh Aficio MP 171SPF AW110037, AW110038 Thermostat Replacement
Now, if you are up to it and decide it might be in your best interest to just rebuild the whole unit then click on the link below and get the fuser 90K PM Kit. You’ve will already have done most the work anyway and buying the kit will save you money over buying and replacing the parts piece by piece.

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