Ricoh A172 - Page 480

Technical Service Bulletin A172/A199 – 012 Reissue
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Fixed Banding:
Possible Causes
Possible Solutions
1.
270 mm from the lead edge.
1.
Replace the gear 112Z Drum Drive Gear
(AB030527).
2.
320 mm from the lead edge.
2.
Replace the Transfer Belt Drive Motor.
Pitch Banding:
Possible Causes
Possible Solutions
1.
0.8 mm
1.
Laser Path Mirror (A1092131) vibration.
2.
0.9 ~1.25
2.
OPC Cleaning Unit vibration, possible solutions
below:
Replace A1093647 – gear 16/17Z worn
Replace A1093616 – gear 16Z worn
Replace A1093646 – gear 16Z worn
Replace A1093615 – Cleaning Brush Bushing worn
3.
1.4 mm
3.
Correct the Transfer drive timing belt tension.
4.
1.9 mm
4.
Replace the Bias Roller Idle gear (A1093616).
5.
15 mm
5.
Gear 112z Drum Drive Gear (AB030527).
6.
20 mm
6.
Cleaning Brush Rotation problem.
7.
30 mm
7.
Replace the Gear 112Z Drum Drive Gear
(AB030527).
8.
375 mm
8.
Replace the OPC drum.
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