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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 service work.
IMPORTANT NOTICE
Because of possible hazards to an inexperienced person servicing this equipment, as well as the risk of damage to the equipment, Konica Corporation, strongly recommends that all servicing be performed only by Konica-trained service technicians. Changes may have been made to this equipment to improve its performance after this service handbook was printed. Accordingly, Konica Corporation, makes no representations or warranties, either expressed or implied, that the information contained in this service handbook is complete or accurate. It is understood that the user of this service handbook must assume all risks or personal injury and/or damage to the equipment while servicing the equipment for which this service handbook is intended. Therefore, this Service Handbook must be read carefully before doing service work both in the course of the technical training and even after that, for keeping the correct maintenance and control of the copying machine. Keep the Service Handbook also for the future service. When it is impossible to read the description about safety and warning (due to contamination or tear), the relevant page should be replaced.
DESCRIPTION ITEMS FOR DANGER, WARNING AND CAUTION
In this Service Handbook, each of three expressions, " DANGER", " WARNING" and " CAUTION" is defined as follows together with a symbol mark to be used in a limited meaning. When servicing, the relevant works (disassembling, assembling, adjustment, repair and maintenance) need to be conducted with utmost care. Actions having a high possibility of suffering death or serious wound WARNING: Actions having a possibility of suffering death or serious wound CAUTION: Actions having a possibility of suffering a slight wound, medium trouble and material damage DANGER:
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SAFETY AND IMPORTANT WARNING ITEMS
IMPORTANT WARNING ITEMS
[1] UNAUTHORIZED MODIFICATIONS
Konica copiers have gained a reputation for being reliable products. This has been attained by a combination of outstanding design and a knowledgeable service force. The design of the copier is extremely important. It is the design process that determines tolerances and safety margins for mechanical, electrical, and electronic aspects. It is not reasonable to expect individuals not involved in product engineering to know what effect may be caused by altering any aspect of the machine's design. Such changes have the potential of degrading product performance and reducing safety margins. For these reasons, installation of any modification not specifically authorized by Konica Corporation, is strictly prohibited. The following list of prohibited actions is not all-inclusive, but demonstrates the intent of this policy. CAUTION: (1) Using an extension cord or any unauthorized power cord adapter. (2) Using any fuse that is not of a type specified by Konica. (3) Using wire, paper clips, solder, etc., to replace or eliminate any fuse (including temperature fuses). (4) Removing (except for replacement) any air filter. (5) Defeating the operation of relays by any means (such as wedging paper between contacts). (6) Causing the machine to operate in a fashion other than as it was designed. (7) Making any change which might have a chance of defeating built-in safety features. (8) Using any unspecified replacement parts.
[2] GENERAL SAFETY GUIDELINES
This copier has been examined in accordance with the laws pertaining to various product safety regulations prior to leaving the manufacturing facility to protect the operators and service personnel from injury. However, as with any operating devise, components will break down through the wear-and-tear of everyday use, as will additional safety discrepancies be discovered. For this reason, it is important that the technician periodically performs safety checks on the copier to maintain optimum reliability and safety. CAUTION: (1) Avoid injury. (2) Ensure that the copier is disconnected from its power source before continuing. (3) Do a job wearing clothes which make the job easy and safe. In case that even touching driving section, there must be no posibility of any injury like rolling up clothes. The following checks, not all-inclusive, should be made during each service call: CAUTION: (1) Look for sharp edges, burrs, and damage on all external covers and copier frame. (2) Inspect all cover hinges for wear (loose or broken). (3) Inspect cables for wear, frays, or pinched areas. (4) Ensure that the power cord insulation is not damaged (No exposed electrical conductors). (5) Ensure that the power cord is properly mounted to the frame by cord clamps. WARNING: (1) Check the continuity from the round lug (GND) of the power cord to the frame of the copier. Ensure continuity. An improperly grounded machine can cause an electrically-charged machine frame. (2) When an earth cable is connected to the improper position, there is a possibility of danger such as explosion or an electric shock. Therefore, the earth cable should not be connected to the following items. a. Gas pipe b. Lightning rod c. Earth cable for telephone line d. Water service pipe made of resin, and water service pipe and faucet which are not approved to be grounded by the Waterworks Bureau.
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SAFETY AND IMPORTANT WARNING ITEMS
[3] SAFEGUARDS DURING SERVICE CALLS
CAUTION: (1) Confirm that all screws, parts, wiring and connector which are removed during maintenance are installed in their original positions. (Especially, negligence of inserting a connector, a sandwiched cord and negligence of driving a screw should be avoided.) (2) When disconnecting connectors, do not pull the wiring, particularly on AC line wiring and high voltage parts. (3) Do not route the power cord where it is likely to be stepped on or crushed. (4) Carefully remove all toner and dirt adhering to any electrical units or electrodes. (5) After part replacement or repair work, route the wiring in such a way that it does not contact any burrs or sharp edges. (6) Do not make any adjustments outside of the specified range.
[5] ACTION TO TAKE IN THE EVENT OF A SERIOUS ACCIDENT
(1) If an accident occurs, the sales company or dealer that was notified of the accident first must take necessary emergency action to assist any injured persons and also prevent any further damage or injury. (2) If the customer notifies you of a serious accident, promptly check the situation regarding damage, injury, and so on, and report to Sales Company. Upon receiving this report, Sales Company must report to KC. (3) In order to determine the cause of the accident, preserve the site of the accident and also the machine itself, witness the investigation, and also follow any instructions from Sales Company or KC.
[6] SUMMARY
It is the responsibility of every technician to use professional skills when servicing Konica products. There are no short cuts to high-quality service. Each copier must be thoroughly inspected with respect to safety considerations as part of every routine service call. The operability of the copier, and more importantly, the safety of those who operate or service the copier, are directly dependent upon the conscientious effort of each and every technician. Remember .... when performing service calls, use good judgement (have a watchful eye) to identify safety hazards or potential safety hazards that may be present, and correct these problem areas as they are identified-the safety of those who operate the copier as well as those who service the copier depend on it!
[4] WHEN USING SERVICE MATERIALS
CAUTION: Care should be exercised when using isopropyl alcohol due to its flammability. When using alcohol to clean parts, observe the following precautions. Remove power from the equipment. Use alcohol in small quantities to avoid spillage or pudding. Any spillage should be cleaned up with rags and disposed of properly. Be sure that there is adequate ventilation. Allow a surface which has been in contact with alcohol to dry for a few minutes to ensure that the alcohol has evaporated completely before applying power or installing covers. CAUTION: Though toner and developer are harmless, pay attention not to inhale them, or not to expose eyes to them excessively. If this happens, wash eyes well with clear water and consult a doctor.
(1) (2)
(3) (4)
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SAFETY AND IMPORTANT WARNING ITEMS
SAFETY INFORMATION LASER SAFETY
The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration implemented regulations for laser products manufactured since Augrust 1, 1976. Compliance is mandatory for products marketed 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 for Health and Safety Act of 1968. Since radiation emitted inside this copier is completely confined within protective housings and external covers, the laser beam cannot escape during any phase of normal user operation.
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SAFETY AND IMPORTANT WARNING ITEMS
SAFETY CIRCUITS
The electrical circuit of this machine contains the following safety circuits to prevent an accident from occurring in the event of an abnormality. [1] Overall safety circuit protector [2] L1 (exposure lamp) overheating protection circuit [3] L2, L4 (fixing heater lamp) overheating protection circuit These safety circuits are described below to provide the service enginear with a renewed awareness of them in order to prevent servicing errors that may impair their function.
[2] L1 (exposure lamp) Overheating Protection Circuit
RL1
f1
[1] Overall Safety Circuit Protector
L1 CONT L1 FB
CVR
H.T.
CBR
RL1 DRIVE
CB
DCPS2
NF
1. Protection function provided by software
When the L1 CONT signal output from the protection function CB (control board) by software becomes [L], L1 lights. At the same time, the L1 FB signal, which indicates that L1 is lit, is output from DCPS2 to the CB. The CB monitors both the L1 CONT and L1 FB signals. If they differ from each other, RL1 (main relay) will be turned OFF, and power to L1 will be cut off. CAUTION: The function of RL1 must not be deactivated under any circumstances.
1. Protection function provided by the CBR (circuit breaker)
This function breaks the AC line instantaneously in the event that an excessive current flows due to a short between the AC line, for example. CAUTION: The function of the CBR must not be deactivated under any circumstances whatever.
2. Protection function using H.T. (hardware timer circuit)
If L1 remains lit for moer than prescribed time because of some abnormality, the hardware timer on DCPS2 will operate, forcibly cutting off the relay on this board. CAUTION: The function of relay must not be deactivated under any circumstances.
3. Protection function using f1 (optics temperature fuse)
If the temperature in the vicinity of f1 rises above prescribed temperature f1 will blow, cutting off the flow of current to L1. CAUTION: Do not under any circumstances use a piece of wire, etc., In place of f1.
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L1
RL1
SAFETY AND IMPORTANT WARNING ITEMS
[3] L2, L4 (fixing heater lamp) Overheating Protection Circuit
3. Protection function provided by TS1 (thermostat (upper)) and TS2 (thermostat (lower))
This function turns OFF TS1 or TS2, directly cutting off the power to L2, L3 and L4, if the temperature of the either upper fixing roller or lower fixing roller exceeds the specified value. CAUTION: Do not substitute a different electrical conductor in place of TS1 or TS2.
RL1
TS1
TS2
CB
TH2
DCPS2
RL1
TH1
Control section
AC driver section
L2 L4
1. Protection function provided by software
This function turns OFF L2 (fixing heater lamp 1), L4 (fixing heater lamp 2) and RL1 (main relay) in the event that the output voltage from TH1 (fixing temperature sensor 1) read the CPU is abnormal. CAUTION: Periodically check the contact face of TH1 with respect to the roller, and replace TH1 if it is abnormal. The function of RL1 must not be deactivated under any circumstances.
2. Protection function provided by hardware (circuit)
This function uses a comparator circuit which compares the output voltage of TH1 and TH2 (fixing temperature sensor 2) with the abnormal judgment reference value. It disconnects L2, L4 and RL1 from the circuit in the event that the output voltage of TH1 or TH2 exceeds the reference value. CAUTION: Periodically check the contact face of TH2 with respect to the roller, and replace TH1, TH2 if it is abnormal. The function of RL1 must not be deactivated under any circumstances.
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SAFETY AND IMPORTANT WARNING ITEMS
INDICATION OF WARNING ON THE MACHINE
The caution labels are attached to the machine areas, as shown below, where you are advised to pay special attention to avoid any dangerous situations or serious injury.
CAUTION/ATTENTION/VORSICHT
High Temperature ! Température élevée ! Heiße Oberfläche ! DO NOT TOUCH Use care when clearing paper.
CAUTION
High temperature
can cause burns. Take care when removing jam.
ATTENTION
Haute temperature
risque de brülure. Soyez prudent en retirant une feuille coincée.
VORSICHT
Hohe temperaturen
Können verbrennungen verursachen.
Risque de brülure. Soyez prudent en retirant la feuille coincée. Brandverletzungsgefahr. Bei Beseitigung von Papierstaus vorsichtig vorgehen.
Bitte vorsicht bei antfernen von papierstau.
CAUTION: This portion is internally very hot. Do not touch it, lest you should get burnt.
CAUTION: This portion is internally very hot. Do not touch it, lest you should get burnt.
HIGH VOLTAGE CAUTION. VORSICHT HOCHSPANNUNG. ATTENTION HAUTE TENTION.
CAUTION: CAUTION: The ADU guide plate is not latched. Do not release it, lest you may cause injury.
CAUTION VORSICHT ATTENTION HIGH TEMPERATURE HEISSE INNENFLACHEN TEMPERATURE ELEVEE
CAUTION: This portion is internally very hot. Do not touch it, lest you should get burnt.
This portion has a high voltage generated. Never touch it, lest you should be electrically shocked.
CAUTION:
You may be burned or injured if you touch any area that you are advised by any caution label to keep yourself away from. Do not remove caution labels. If any caution label or caution indicator is soiled, clean the label. If you cannot make it legible or if the caution label is removed, please contact your Service Centre.
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