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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Clarion OHM820, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
What is an instruction?
The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Clarion OHM820 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.
Unfortunately, only a few customers devote their time to read an instruction of Clarion OHM820. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
What should a perfect user manual contain?
First and foremost, an user manual of Clarion OHM820 should contain:
- informations concerning technical data of Clarion OHM820
- name of the manufacturer and a year of construction of the Clarion OHM820 item
- rules of operation, control and maintenance of the Clarion OHM820 item
- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Clarion OHM820 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Clarion OHM820, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Clarion service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Clarion OHM820.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Clarion OHM820 item, and its use of respective accessory, as well as information concerning all the functions and facilities.
After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.
Table of contents for the manual
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Page 1
OWNER’S MANUAL 7” LCD Color Monitor 8” LCD Color Monitor 720 820 manual.qxd 12/4/01 10:16 AM Page 1[...]
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Page 2
OHM720, OHM820 INTRODUCTION The Clarion OHM720/OHM820 is a full-featured 7”/8” LCD Color Monitor that can be used as a stand-alone monitor, or can be integrated into a mobile multimedia system. The OHM720/OHM820 has the following features: l TFT Active Matrix Display l Swivel Mechanism l 16:9/4:3 Adjustable Wide Screen Format (OHM720 only) l 2 [...]
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Page 3
OWNER’S MANUAL 1. PRECAUTIONS l The set is for use in DC 12V, negative ground vehicles. l Do not operate the set in ways other than described in this guide. Doing so may damage it and voids your warranty. l SAFETY FIRST! For rear seat use only. Do not install in dashboard or anywhere else that would permit monitor to be viewed by the driver. Moni[...]
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Page 4
OHM720, OHM820 3 1 Monitor Release Button 2 Dome Light Switch 3 Power Button 4 Channel Select Up 5 Channel Select Down 6 Mode Selector 7 FM Modulator On/Off Button 8 Auxiliary Input Selector 9 Power LED 10 IR Sensor 4. MONITOR BUTTON FUNCTIONS 5. DESCRIPTION OF IR REMOTE CONTROL Button Functions 720 820 manual.qxd 12/4/01 10:16 AM Page 4[...]
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Page 5
1 Power Button for Monitor Powers on monitor 2 TV/Video Button Switches between A/V1, A/V2, TV. 3 FM Modulator Button Turns FM Modulator ON/OFF. 4 Auto Memory Button for TTX001 (TV Tuner) Locks channels with good reception. 5 Channel Up for TTX001 (TV Tuner) Changes TV channels up. 6 Channel Down for TTX001 (TV Tuner) Changes TV channels down. 7 Pi[...]
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Page 6
6. USING REMOTE CONTROL Inside the vehicle, simply aim the IR Remote Control directly at the OHM720/ OHM820, or at a Clarion monitor, or video source with an IR eye input and press any desired button for better results. Also note the following: l Aim the IR Remote Control from no further than 7 feet away and no more than 3 feet on either side of th[...]
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Page 7
OWNER’S MANUAL 9. INSTALLATION INSTRUCTIONS The OHM720/OHM820 is an overhead, flip-down 7"/8” monitor with an infrared (IR) eye. It will accept a video signal from any video source with composite video out. The IR eye will work directly with any Clarion video source product with an IR Eye Input. 1. Look over the vehicle for a location for [...]
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Page 8
OHM720, OHM820 10. DOME LIGHT WIRING Negative Trigger Door Switch Positive Trigger Door Switch Brown: + 12V Brown: Ground Gray: Ground Gray: + 12V White: Door Switch White: Door Switch 11. DOME LIGHT ON/OFF SWITCH DESCRIPTION A three-position slide switch controls the lights integrated into the OHM720/ OHM820. Sliding the switch to the ON position [...]
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Page 9
OWNER’S MANUAL 13. PICTURE ADJUSTMENT To adjust the picture use the mode button to select the mode feature you would like to adjust. Adjustment selections are as follow: l Contrast l Brightness l Color l Wide screen ON/OFF (OHM720 only) l Tint Press the up button to increase and the down button to decrease. 14. FM MODULATOR (FM200) SYSTEM DIAGRAM[...]
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Page 10
OHM720, OHM820 15. TV TUNER (TTX001) INSTALLATION INSTRUCTIONS AND SYSTEM DIAGRAM 1. Insert the tuner into the back of the OHM720/OHM820. 2. Plug the ribbon cable into the back of the OHM720/OHM820. Connect another side of this cable to the TV Tuner (TTX001) 3. Screw the tuner down to the existing tuner holes. 4. Screw on the Clarion TV Tuner anten[...]
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Page 11
OWNER’S MANUAL 16. COMPLETE A/V SYSTEM DIAGRAM 10 720 820 manual.qxd 12/4/01 10:17 AM Page 11[...]
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Page 12
11 OHM720, OHM820 17. CARE AND MAINTENANCE Cleaning the cabinet l Use a soft, dry cloth to gently wipe off any dirt. l Do not use benzene, thinner, car cleaner, etc., as these substances may damage the cabinet or cause the paint to peel. Cleaning the LCD panel l Use a soft, dry cloth to gently wipe off any dust. l The surface is easily scratched; d[...]
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Page 13
12 OWNER’S MANUAL 19. WARRANTY INFORMATION This product is warranted against all defects in material workmanship for a period of one year from the date of original purchase. Clarion Multimedia products are covered by a one-year warranty when installed by an authorized Clarion dealer. The conditions of this warranty and the extent of responsibilit[...]
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Page 14
661 West Redondo Beach Blvd. Gardena, CA 90247 1-800-GO-CLARION www.clarion.com OHM720-820 Rev.0 (12/01) 720 820 manual.qxd 12/4/01 10:17 AM Page 14[...]