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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Boss Audio Systems 642CA, 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.
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First and foremost, an user manual of Boss Audio Systems 642CA should contain:
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Table of contents for the manual
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Page 1
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Page 2
1 642CA OWNER’S MANUAL Mobile Audio System y PLL Synthesizer Stereo Radio y CD/MP3/WMA Player y Automatic Memory S toring y Full Det achable Panel y Preset Equalization y Electronic Shockproof (ESP) Function y Auxiliary Input Function y Remote Control[...]
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Page 3
2 CONTENTS Inst allation ........................................... 3 T ake out screw before installation ......... 3 DIN Front-Mount (Method A) ................. 3 Installing the uni t ............................... 3 Removing t he unit ............................. 4 DIN Rear-Mount (Method B) ................. 5 Using the det achable front p an[...]
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Page 4
3 INST ALLA TION Notes: y Choose the mounting location where the unit will not interfere with the normal driving function of the driver . y Before finally inst alling the unit, connect the wiring temporarily and make sure it is all connected up properly and the unit and the system work properly . y Use only the part s included with the unit to ensu[...]
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Page 5
4 INST ALLA TION (1) Front panel; (2) Outer trim ring; (3) Sleeve; (4) L key; (5) R key 6. Mount the sleeve by inserting it into the opening of the dashboard and bend open the tabs located around the sleeve with a screwdriver . Not all tabs will be able to make contact, so examine which ones will be most effective. B ending open the appropriate tab[...]
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Page 6
5 INST ALLA TION 5. Insert both of the supplied keys into the slots at the middle lef t and right sides of the unit, then pull the unit out of the dashboard. DIN REAR-MOUNT (Method B) If your vehicle is a Nissan, T oyota, follow these mounting instructions. Use the screw holes marked T (T oyot a), N (Nissan) located on both sides of the unit to fas[...]
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Page 7
6 REMOVING THE FRONT P ANEL 1. Press the release button on the front panel and pull of f the front p anel. 2. Keep front p anel into the case. INST ALLING THE FRONT P ANEL T o install the front p a nel, insert the panel into the housing and make sure the panel is properly installed. Otherwise, abnormality occurs on the display or some keys will not[...]
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Page 8
7 WIRING CONNECTION FOR 50X4W SYSTEM[...]
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Page 9
8 OPERA TION LOCA TION OF KEYS 1. release button 2. (tune/seek/track up) 3. V olume knob (when rotated) SEL button (when pressed) 4. Disc slot 5. 1 P AU button 6. 2 SCN button 7. 1-6 preset buttons 8. 3 RPT button 9. MON button 10. AS/PS/Navi-SCH button 1 1. MOD button 12. Eject button 13. Liquid crystal display 14. BND/LOU/ENT button 15. (tune/see[...]
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Page 10
9 OPERA TION SWITCHING ON/OFF THE UNIT Press PWR/MUT button (23) to switch on the unit. When system is on, press and hold PWR/MUT button (23) to turn off the unit. F ACEPLA TE RELEASE Press button (1) to detach the removable faceplate. SOUND ADJUSTMENT Press the volume button (3) shortly to select the desired adj ustment mode. The adjustment mode w[...]
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Page 11
10 OPERA TION The reset button is to be activated for the following reasons: - Initial installation of the unit when all wiring is completed. - All the function buttons do not operate. - Error symbol on the display . Note: if press reset button (24), the unit can’t work yet, please use a cotton swab soaked in isopropyl alcohol to clean the socket[...]
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Page 12
11 OPERA TION PREVIEWING TRACKS Press SCN button (6) to play first several seconds of each track on the current disc. Press again to stop intr o and listen to track. When playing MP3/WMA disc, press and hold SCN button (6) to play first several seconds of each track in the current directory . Press it again to exit this mode. REPEA TING TRACKS Pres[...]
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Page 13
12 OPERA TION 3) DISPLA Y INFORMA TION Press DISP button (22) to show the following information, such as the clock, ID3 T AG (if available: song title, directory name, artist name, other contents…) (FOR MP3/WMA ID3 FUNCTION VERSION ONL Y) and other information. DISC NOTES A. Notes on discs: 1. Attempting to use non-standard shape discs (e.g. squa[...]
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Page 14
13 REMOTE CONTROL 1. V OL +: V ol um e Up Bu t to n (Character Se lect ( A, B~8,9,0, _, -, +) For MP3 /WMA Operation) 2. MU TE : Power ON/OFF/MUTE Button 3. SELECT : Sound Mode Select Button (Chara cter Shift Right For MP3/WMA Operation) 4. TUNE/SKIP : T une/Seek Down Button 5. DISP: Display Button 6. V OL -: Volume D own Bu tt on (Cha racter Selec[...]
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Page 15
14 SPECIFICA TION GENERAL Power Supply Requirements : DC 12 V olts, Negative Ground Chassis Dimensions : 178 (W) x 160 (D) x 50 (H) T one Controls - Bass (at 100 Hz) : ±10 dB - T reble (at 10 kHz) : ±10 dB M a x i m u m O u t p u t P o w e r : 5 0 X 4 w a t t s C u r r e n t D r a i n : 5 A m p e r e ( m a x . ) CD PLA Y ER Signal to Noise Ratio [...]
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Page 16
15 TROUBLE SHOOTING Before going through the checklist, check wir ing connection. If any of the problems persist after checklist has been made, consult your nearest service dealer . Symptom Cause Solution No power . The car ignition switch is not on. If the power supply is connected to the car accessory circuits, but the engine is not moving, switc[...]