User manual CLARION EQS744

[. . . ] Three stereo RCA outputs to drive front, rear and subwoofer audio systems. Separate controls for master system volume, subwoofer volume, front/rear fader and selection of main or auxiliary inputs. For optimum performance, the EQS744 should be installed by an authorized Clarion dealer. [. . . ] Check clearances on both sides of a planned installation before drilling any holes or installing any screws. When routing RCA cables, keep them away from power cables and output speaker wires. 4 Owner's Manual 3. If the unit should become wet, turn off all power and ask your authorized Clarion dealer to clean or service the unit. WIRING PRECAUTIONS Read all wiring precautions. If you are not sure of the connections, contact your authorized Clarion dealer. This unit operates on automotive 12V negative ground power source and requires additional mobile audio components for proper operation. Disconnect the negative (-) lead of the battery before making any power connections. A good chassis ground connection is critical to the performance of your Clarion equalizer. Use the shortest ground wire possible and securely connect to the car chassis along with the source unit ground to minimize resistance and avoid noise problems. Extra cable can cause signal loss and act as an "antenna" for noise. Use only high quality RCA cables that are no longer than necessary to make a direct connection with the source unit and amplifiers. If you are using a source unit, without a remote turn-on lead, the EQS744 can be turned on with a switched accessory lead. You can find this accessory power source in the factory harness at the back of the radio. It is the lead that turns on and off with the key. WIRING 5 EQS744 SYSTEM SET-UP Setting System Volume After completing the system wiring, follow the steps below to properly adjust the EQS744. Turn the master control volume on the EQS744 and the amplifier gain controls to their minimum setting. [. . . ] With the auxiliary source in the play mode, switch to the auxiliary source. . Adjust the auxiliary input gain controls, located on the top panel of the EQS744, so that the volume of the auxiliary source matches the volume of the main source. Owner's Manual TROUBLESHOOTING Problem Unit does not work; no lights. Check battery and ground wiring at unit; check battery connections Problem Sound is distorted. [. . . ]