Ricoh general Technical Bulletin

Reissued on April 30, 1991

Technical Bulletin No. RTB-003

SUBJECT: Corona Casing Cleaning DATE:April 30,1991

PAGE: 1 of 1

PREPARED BY: M. Kitajima CHECKED BY:

CLASSIFICATION:

Action Required Troubleshooting Retrofit Information

This bulletin gives information on cleaning the corona casing. CLEANING

Section Action at EM/PM

Casing Clean with water first and with alcohol if

toner still remains.

End Block Clean with a blower brush and then with

alcohol.

EXPLANATION

Revision of service manual Information only Other

FROM: Copier Technical Support Section

MODEL: General

The corona discharge causes ammonium nitrate (NH4NO3) to accumulate on the corona casing.

NH4NO3 functions as an insulator that reduces the corona discharge to the casing. The power pack responds by increasing the voltage to the corona wire in order to maintain a constant current output. (The power pack is a constant current type.)

If toner or some other material accumulates inside the corona end block especially inside the hook groove [A], it may cause an electrical leak under humid conditions.

NH4NO3 can be easily removed with water but not with alcohol. Toner can be easily removed with alcohol but not with water.

Therefore, be careful to use the proper cleaning method for each corona unit section.

[A]

Technical Bulletin No. RTB-005

REVISED ON APRIL 15, 1991

SUBJECT: Cleaning Solutions DATE: Dec. 30, ’90

PAGE: 1 of 1

PREPARED BY: T. OKAJIMA CHECKED BY:

CLASSIFICATION:

Action Required Troubleshooting Retrofit Information

Based upon the request from the market, three type of cleaning solution have been registered as service parts. Please order them from the parts center as usual. The details are as follows:

Revision of service manual Information only Other

FROM: International Q.A. Center

MODEL: General

1. EXTERIOR COVER CLEANER (NET. 220 cc) P/N: A0129530

Purpose: 1) To clean the exterior covers

2) To remove spilt silicone oil from the floor

Procedure: 1) Shake well and spray onto the soiled cover or on the floor.

2) After 10 seconds, wipe cleaner using a soft cloth.

2. DF BELT CLEANER (NET. 180 cc) P/N: A0129531

Purpose: To clean document feeder belts. Procedure: 1) Dampen a soft cloth with the cleaner, and wipe the belt.

2) Repeat until the belt is clean.

3. Optics Cleaner (NET. 190 cc) P/N: A0129532

Purpose: To clean mirrors, lenses, exposure glasses, and paper feed rollers Procedure: Dampen a soft cloth with the cleaner, and wipe the soiled parts.

CAUTION

Since these three type of cleaning solution are FLAMMABLE, pay attention to the following caution:

1. Do not spray onto bare skin.

2. Keep away from heat and open flame.

3. Store in a cool place.

4. Keep away from children.

5. Do not dispose of the cleaner by burning it, by applying heat to it, or by any means that might cause it to ignite. 6 Comply with all local regulations for disposal.

Technical Bulletin No. RTB-006

SUBJECT: New Tri-flow Lubricant DATE: Jan 15, 91

PAGE: 1 of 1

PREPARED BY: N. Takai CHECKED BY:

CLASSIFICATION:

Action Required Troubleshooting Retrofit Information

To protect the environment, the tri-flow lubricant (P/No. 52159533) that uses CFC aerosol propellants has been discontinued. A new tri-flow that uses LPG as the propellant is now being supplied.

NOTE: CFC (chlorofluorocarbon) gasses are believed to contribute to the depletion of the

earth’s ozone layer.

New Tri-flow: P/No.: 52159539 (Volume: 27 ml)

Revision of service manual Information only Other

FROM: Copier Technical Support Section

MODEL: General

Technical Bulletin No. RTB-008

SUBJECT: Ground Sheet DATE: Mar 31,’91

PAGE: 1 of 1

PREPARED BY: M. Ninomiya CHECKED BY:

CLASSIFICATION:

Action Required Troubleshooting Retrofit Information

Two different sizes of ground sheets have been registered as service parts. These sheets help keep the customer’s floor clean by catching any toner, oil, etc, that

may fall to the floor while customer engineer is servicing a copier.

800 mm

Revision of service manual Information only Other

FROM: Copier Technical Support Sec.

MODEL: General

650 mm

1200 mm

920 mm

Small(Green) (P/N A0099019)

Large (Gray) (P/N A0099017)

Technical Bulletin No. RTB-009

SUBJECT: Service Parts Package Improvement DATE: Mar. 31, ’92

PAGE: 1/1

PREPARED BY: N. Takai CHECKED BY:

CLASSIFICATION:

Action Required Troubleshooting Retrofit Information

The earth is a closed environment with limited resources. People need a good environment, where they can live safely and comfortably. We, Ricoh as a manufacturer, believe that protecting the environment and passing on a better environment to posterity is one of the most important duties of every living being.

In live with the above concept, we are improving not only the machines, but even the packages for the service parts to help preserve the environment as follows:

Schedule for improvement of service parts packaging

Step 1: Elimination of plastic made from Polyvinyl chloride (PVC) Feb. ’92

Revision of service manual Information only Other

Item From (target)

FROM: Copier Technical Support Sec.

MODEL: General

Step 2: Elimination of glueing different materials together Aug. ’92

(i.g. styrofoam and cardboard) * This is to facilitate segregating the waste by material.

Step 3: Reduction of usage of cardboard(10% less) Sep. ’92

* This is to reduce wasting resources.

This bulletin covers all package changes for service parts related to the preservation of the environment. We will not inform you of the changes for individual parts packages.

RICOH Technical

Bulletin

PAGE: 1/4

Model:

Subject: From: Classification:

Some service tools were set up as service parts decades ago for cases where appropriate field service tools could not be obtained locally. These tools will no longer be available at the SPC.

This is because all types of service tools are now available across the world. Also, some tools are no longer needed for servicing recent Ricoh products.

The target service tools are listed on the following pages.

General

Service Tools

QAC Field Information Dept.

Troubleshooting Mechanical Paper path Other ( )

Part information Electrical Transmit/receive

Date:

30-Sep-98

Prepared by:

No.:

M.Mimura

Action required Service manual revision Retrofit information

RICOH Technical

Bulletin

PAGE: 2/4

Model:

General

Date:

30-Sep-98

No.:

TOOL LIST – 115V (54199 901)

Item Part No. Description Q’ty Item Part No. Description Q’ty

1. 54199600 Tool Case (Aluminum) 1 31. 54199630 Screw Driver Long Shawk “+” 75mm 1

2. 54199601 Tension Gauge 0-2Kg 1 32. 54199631 Voltage Checler-100V 250V 1

3. 54199602 Wrench 1 33. 54199632 Cleaner-Solder Iron 1

4. 54199603 Thickness Gauge 1 34. 54199633 Solder 1

5. 54199604 File 1 set 35. 54199634 NT Cutter 1

6. 54199605 Parts Case 1 36. 54199635 Tester 1

7. 54199606 Oiler 2 pcs. 37. 54199636 Solder Sucker 1

8. 54199607 Bond 1 38. 54199637 Electric Torch-Pen type 1

9. 54199608 Crimping Plier 1 39. 54199638 Retaining Ring Holder-1.5mm 1

10. 54199609 Wire Stripper 1 40. 54199639 Retaining Ring Holder-2.0mm 1

11. 54199610 Magnetic Screw Driver 1 41. 54199640 Retaining Ring Holder-2.5mm 1

12. 54199611 Nipper 1 42. 54199641 Retaining Ring Holder-3.0mm 1

13. 54199612 Cutting Plier-Radio Type 1 43. 54199642 Retaining Ring Holer-4.0mm 1

14. 54199613 Cutting Plier 1 44. 54199643 Retaining Ring Holder-5.0mm 1

15. 54199614 Plier 1 45. 54199644 Retaining Ring Holder-6.0mm 1

16. 54199615 Tweezers 1 46. 54199645 Retaining Ring Holder-7.1mm 1

17. 54199616 Allen Erench-1.5mm 1 47. 54199646 Retaining Ring Holder-8.1mm 1

18. 54199617 Allen Wrench-2.0mm 1 48. 54199647 Scale-150mm 1

19. 54199618 Allen Wrench-2.5mm 1 49. 54199648 Crescent Wrench 1 set

20. 54199619 Allen Wrench-3.1mm 1 50. 54199649 Insulating Tape-Black 1

21. 54199620 Allen Wrench-4.0mm 1 51. 54199650 Insulating Tape-Red 1

22. 54199621 Allen Wrench-5.0mm 1 52. 54199651 Double Coated Tape 1

23. 54199622 Allen Wrench-6.0mm 1 53. 54199652 Silicon Cloth 1

24. 54199623 Allen Wrench-8.0mm 1 54. 54199653 Spring Hook 1

25. 54199624 Screw Driver ”-“ 120mm 1 55. 54199654 Test Chart-B4 size 1

26. 54199625 Screw Driver “+” 120mm 1 56. 54199655 Test Chart-A3 size 1

27. 54199626 Screw Driver “+” 125mm 1 57. 54199656 Solder Tip 1

28. 54199627 Stubby Screw Driver “-“ 1 58. 54199657 Solder Iron –115V 1 125mm

29. 54199628 Stubby Driver “+” 1 59. 54199706 Clip Ass’y-Large 1

30. 54199629 Screw Driver Long Shawk 1 60. 54199707 Clip Ass’y-Small 1 “-“ 125mm

61. 54086001 Service Mat 1

RICOH Technical

Bulletin

PAGE: 3/4

Model:

General

Date:

30-Sep-98

No.:

TOOL LIST – 220V (54199 902)