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Service Manual
[General]
CF5001
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CF5001 Ver.1.0 Sep. 2003 CONTENTS CONTENTS SAFETY AND IMPORTANT WARNING ITEMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-1 IMPORTANT NOTICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-1 DESCRIPTION ITEMS FOR DANGER, WARNING AND CAUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-1 SAFETY WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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CONTENTS CF5001 Ver.1.0 Sep. 2003 6.11 2nd transfer roller /L cleaning (Sub step 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28 6.12 Toner collection (Sub step 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29 6.13 Process speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29 II UNIT EXPLANATION 1. SCANNER. . .
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CF5001 Ver.1.0 Sep. 2003 CONTENTS 7.2 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37 7.2.1 Toner collection control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37 7.2.2 Waste toner full detection control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37 8. PAPER FEED TRAY /1 TO /3 . . . . . . . .
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CONTENTS CF5001 Ver.1.0 Sep. 2003 14.5 Gamma correction control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-68 15.OTHER CONTROLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-69 15.1 Parts to which power is supplied even when the reset switch is turned off . . . . . . . . . . . . . . . . . 2-69 15.2 Parts that operate only when the power switch is turne
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SAFETY AND IMPORTANT WARNING ITEMS SAFETY AND IMPORTANT WARNING ITEMS Read carefully the Safety and Important Warning Items described below to understand them before doing ser- vice work. IMPORTANT NOTICE Because of possible hazards to an inexperienced person servicing this copier as well as the risk of damage to the copier, Minolta Corporation strongly recommends that all servicing be performed only by Minolta-trained ser- vice technicians. Changes may have been made to this copier to improve i
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SAFETY AND IMPORTANT WARNING ITEMS SAFETY WARNINGS 1. MODIFICATIONS NOT AUTHORIZED BY MINOLTA Minolta copiers are renowned for their high reliability. This reliability is achieved through high-quality design and a solid service network. Copier design is a highly complicated and delicate process where numerous mechanical, physical, and electrical aspects have to be taken into consideration, with the aim of arriving at proper tolerances and safety factors. For this reason, unauthorized modificatio
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SAFETY AND IMPORTANT WARNING ITEMS 2. CHECKPOINTS WHEN PERFORMING ON-SITE SERVICE Minolta copiers are extensively tested before shipping, to ensure that all applicable safety standards are met, in order to protect the customer and customer engineer (hereafter called the CE) from the risk of injury. However, in daily use, any electrical equipment may be subject to parts wear and eventual failure. In order to maintain safety and reliability, the CE must perform regular safety checks. 2.1 Power Sup
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SAFETY AND IMPORTANT WARNING ITEMS WARNING: Power Plug and Cord • Do not bundle or tie the power cord. Overheating may occur there, leading to a risk of fire. • Check whether dust is collected around the power plug and wall outlet. Using the power plug and wall outlet without removing dust may result in fire. • Do not insert the power plug into the wall outlet with a wet hand. The risk of electric shock exists. • When unplugging the power cord, grasp the plug, not the cable. The cable may be b
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SAFETY AND IMPORTANT WARNING ITEMS WARNING: Ground Lead • Pay attention to the point to which the ground lead is connected. Connecting the ground lead to an improper point such as the points listed below results in a risk of explosion and electric shock: a. Gas pipe (A risk of explosion or fire exists.) b. Lightning rod (A risk of electric shock or fire exists.) c. Telephone line ground (A risk of electric shock or fire exists in the case of lightning.) d. Water pipe or faucet (It may include a
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SAFETY AND IMPORTANT WARNING ITEMS CAUTION: Ventilation • The copier generates ozone gas during operation, but it is not sufficient to be harmful to the human body. If a bad smell of ozone is present in the following cases, ventilate the room. a. When the copier is used in a poorly ventilated room b. When making a lot of copies c. When using multiple copiers at the same time CAUTION: Vibration • When installing the copier, read the Installation Guide thoroughly. Be sure to install the copier in
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SAFETY AND IMPORTANT WARNING ITEMS DANGER: Work Performed with the Copier Powered • Take every care when servicing with the external cover detached. High-voltage exists around the drum unit. A risk of electric shock exists. WARNING: Safety Checkpoints • Check the exterior and frame for edges, burrs, and other damages. The user or CE may be injured. • Do not allow any metal parts such as clips, staples, and screws to fall into the copier. They can short internal circuits and cause electric shock
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SAFETY AND IMPORTANT WARNING ITEMS WARNING: Safety Checkpoints • After replacing a part to which AC voltage is applied (e.g., optical lamp and fixing lamp), be sure to check the installation state. A risk of fire exists. • Check the interlock switch and actuator for loosening and check whether the interlock functions properly. If the interlock does not function, you may receive an electric shock or be injured when you insert your hand in the copier (e.g., for clearing paper jam). • Make sure the
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SAFETY AND IMPORTANT WARNING ITEMS DANGER : HANDLING OF SERVICE MATERIALS • Do not replace the cover or turn the copier ON before any solvent remnants on the cleaned parts have fully evaporated. A risk of fire exists. • Use only a small amount of cleaner at a time and take care not to spill any liquid. If this happens, immediately wipe it off. A risk of fire exists. • When using any solvent, ventilate the room well. Breathing large quantities of organic solvents can lead to discomfort. 3. MEASU
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SAFETY AND IMPORTANT WARNING ITEMS SAFETY INFORMATION IMPORTANT INFORMATION The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration implemented regulations for laser products manufactured since August 1, 1976. Compliance is mandatory for products mar- keted in the United States. This copier is certified as a “Class 1” laser product under the U.S. Department of Health and Human Services (DHHS) Radiation Performance Standard according to the Radiation Control
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SAFETY AND IMPORTANT WARNING ITEMS SAFETY CIRCUITS This machine is provided with the following safety circuits to prevent machine faults from resulting in serious accidents. • Overall protection circuit • Fixing upper lamp /1 (L2), Fixing upper lamp /2 (L3), Fixing lower lamp (L4) overheating prevention circuit These safety circuits are described below to provide them in order to prevent servicing errors that may the service engineer with a renewed awareness of impair their functions. 1. Overall
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SAFETY AND IMPORTANT WARNING ITEMS 2. Fixing upper lamp /1 (L2), Fixing upper lamp /2 (L3), Fixing lower lamp (L4) overheating prevention circuit PRCB ACDB TH1 L2 TS1 TH3 L3 AC driver FHCB section Control section TH2 TS2 L4 TH4 RL1 8050sf002e RL1 2.1 Protection by software The output voltage from fixing temperature sensor /1 (TH1) and fixing temperature sensor /2 (TH2) is read by the CPU. If this voltage is abnormal, L2, L3, and L4 are turned OFF by opening main relay (RL1). CAUTION: • The clea
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SAFETY AND IMPORTANT WARNING ITEMS INDICATION OF WARNING ON THE MACHINE Caution labels shown below are attached in some areas on/in the machine. When accessing these areas for maintenance, repair, or adjustment, special care should be taken to avoid burns and electric shock. 8050sf003e CAUTION Please adhere to all caution labels to avoid burns or injury. S-13
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SAFETY AND IMPORTANT WARNING ITEMS 8050sf004e CAUTION - Please adhere to all caution labels to avoid burns or injury. S-14
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SAFETY AND IMPORTANT WARNING ITEMS 8050sf005e CAUTION Please adhere to all caution labels to avoid burns or injury. S-15
