Sharp FO-2150CM, UX-2200CM Envelope Feed Service Check, Maintenance Station Service Check

Page 17

UX-2200CMU/CMC

FO-2150CMU/CMC

2. Envelope Feed Service Check

 

FRU

Action

 

 

 

1

Envelope Guide

Be sure the envelope guide has been turned to the envelope load

 

 

position.

 

 

Be sure the envelope guide is against the envelopes.

 

 

Perform the ‘Paper Feed Service Check’on page 4.

 

 

 

3. Maintenance Station Service Check

The maintenance station has two functions:

Cleans the printhead nozzles during the print operation.

Seals the printhead when it is not being used to prevent the nozzles from drying.

 

FRU

Action

 

 

 

1

Maintenance Station

As the carrier moves to the right over the maintenance station,a slot on

 

Assembly

the bottom of the carrier engages a tab on the sled of the maintenance

 

 

station causing the cap to rise and seal the printhead. Carrier move-

 

 

ment to the left uncaps the printhead. The wiper cleans the printhead

 

 

nozzles as the carrier leaves the maintenance station. The wiper

 

 

cleans the printhead only when the carrier is moving to the left. There

 

 

should be no wiping action of the printhead nozzles when the carrier is

 

 

moving to the right. After the cleaning operation is complete,a tab on

 

 

the maintenance station engages a tab on the carrier,causing the wiper

 

 

to lower.

 

 

Check the maintenance station for worn or broken parts.

 

 

 

2

Wiper

A worn wiper causes degraded print quality just after a maintenance

 

 

cleaning. Check for a loose or worn wiper.

 

 

 

3

Cap

A worn cap causes the printhead nozzles to dry and clog. Check for a

 

 

loose or worn cap.

 

 

 

16

Image 17
Contents Technical Manual Abbreviations Engine SpecificationsDiagnostic Information Electrical System Circuit descriptionGeneral description ASIC, RAM, and CPU Host interface connectorElectricai Overview Paper feedpaper feed from tray Driver ICPaper Motor Carriage Motor Print transferINK Cartridge Carriage Paper in SensorHome Position Sensor Left Right B Carriage HolderBoth Carriage Motor and Feed Motor are NG Overall Trouble Shooting Of Printer PWBFeed Motor is NG Carriage Motor is Good Missing Nozzles Result of Check Pattern or Clean Nozzles Nozzle 6How to Decide the Number of the Wrong NozzlePIN Waveforms Feed Motor Waveforms When Feeding Paper Carriage Motor Waveforms Carriage Motor Waveforms Measured for Checking OUT of INK Carrier Transport Service Check Service ChecksMaintenance Station Service Check Envelope Feed Service CheckPaper Feed Service Check Power Service Check Paper Path Service CheckPin Assignment Top View IC Signal NameBlock Diagram P22XTOUT Pin Function PIN Name Input/OutputPin Connection Top View Block Diagram case of 4 bitDescription Absolute Maximum Ratings Symbol Parameter Value UnitPin Functions Function59 B12 Exploded ViewB12 B140MIMMM7E24MM0 Replacement Parts ListCopyright 1998 by Sharp Corporation