User manual ALPINE MRP-T222

[. . . ] Return it to your authorized Alpine dealer or the nearest Alpine Service Center for repairing. The wiring and installation of this unit requires special technical skill and experience. To ensure safety, always contact the dealer where you purchased this product to have the work done. Use of other than designated parts may damage this unit internally or may not securely install the unit in place. [. . . ] Make sure there are no objects behind the surface that may become damaged during drilling. Position the MRP-T222/MRP-M500 over the screw holes, and secure with four self-tapping screws. NOTE: To securely connect the ground lead, use an already installed screw on the metal part of the vehicle (marked (}), sold separately). Be sure this is a good ground by checking continuity to the battery (­) terminal. Attach the terminal covers (supplied) after connections and confirmation of correct operation. How to attach the terminal covers: Attach the left and right terminal covers using the supplied screws (M3 x 12), as shown in the figure below. 1 Right terminal cover 2 Left terminal cover 3 Screw (M3 x 12) NOTE: Do not lift or carry the unit by the attached terminal covers. Before making connections, be sure to turn the power off to all audio components. Connect the yellow battery lead from the amp directly to the positive (+) terminal of the vehicle's battery. Locate the unit and route the leads at least 10 cm (3-15/16") away from the car harness. ⷠKeep the battery power leads as far away from other leads as possible. Ensure that you install a correctly-rated in-line fuse on the power cable near the battery positive post. Cautions on wire lead connections (MRP-T222 only) When using third-party wire cables (power supply wire), use the supplied screws to simplify the connection. If you are in doubt about how to make this connection, consult your dealer. Wire Size (Battery Lead, Ground Lead): Recommended wire size for this unit is 21mm2. Remove the insulation from the ends of the wire leads by about 7 ­ 10mm (9/32" ­ 3/8"). If length of the exposed wire is too short, a poor connection may occur causing operation failure or sound interruption. ⷠOn the other hand, if the length is too long, an electrical short-circuit may occur. 6) Before making this connection, use insulated shrink tubing to cover any exposed wire extending beyond the terminal. To prevent disconnection of the leads or dropping of the unit, do not use the cabling to carry the unit. The head unit's power antenna lead is activated only when the radio is on (turns off in the tape or CD Mode). The head unit's power antenna lead is logic level output (+) 5V, negative trigger (grounding type), or cannot sustain (+) 12V when connected to other equipment in addition to the vehicle's power antenna. [. . . ] Blue/White Power Antenna Remote Turn-On Lead To other Alpine components' Remote Turn-On Leads SPST Switch (optional) Fuse (3A) As close as possible to the vehicle's ignition tap Ignition Source Using a dynamic CD as a source, increase the head unit volume until the output distorts. Then, reduce the volume 1 step (or until the output is no longer distorted). Now, increase the amplifier gain until the sound from the speakers becomes distorted. Reduce the gain slightly so the sound is no longer distorted to achieve the optimum gain setting. [. . . ]