9KDC-X5791. How to enter the test mode• While holding the Preset 1 and Preset 3 keys, reset the unit.2. How to exit from the test mode• Reset the unit, momentary power down, ACC OFF, powerOFF, and Panel detached.• (Note) The test mode cannot terminated by Panel is falldown.3. Initial status in the test mode• Sources : All OFF.• Display : All segments are lit.• Volume : -10 dB (displayed as 30)• Loudness : OFF• CRSC : OFF regardless of the presence ofswitching function.• SYSTEM Q : Flat.• BEEP : When pressing any keys, the buzzergenerates a beep at any time.• DISPLAY TYPE : TYPE A4. RDS automatic measurement• An addition to disposal of substitute for visual check PSdisplay as usual production lines.• P-CON terminal is OFF by force, when received the PSdata and in case of corrobaration PS display is“RDS_TEST”. (“_” is mean blank.)• This disposal is test mode only.• P-CON is switching the source or return with power on→off.5. Special display in Tuner modeWhen any of the following messages is displayed in Tunermode, the front end may be abnormal.• “TNE 2P NG”: The EEPROM is set to the default (unstablevalues) because the F/E was shipped without passingthrough the adjustment process, etc.• “TNCON NG”: Communication with the F/E is not possible.6. Forced switching of K3I• Each press of the Preset 6 key in Tuner mode should switchK3I from AUTO → Forced Wide → Forced Middle → ForcedNarrow → AUTO. The initial status is AUTO and the dis-play shows these modes as follows.• AUTO : FMA• Forced Wide : FMW• Forced Middle : FMM• Forced Narrow : FMNTEST MODE7. CD Receiver Test Mode Specification• When resetting to start, forced ejection of CD is prohib-ited. When a CD is in place, the CD is not recognized whenreset.• When this key is pressed, the mechanism jumps tothe following track.No9 → No15 → No10 → No11 → No12 → No13 →No22 → No14 → No9 (Return to the first track.)• When this key is pressed, the track goes down by onefrom the currently played track.• When a CD being played, by pressing [1] key intermittently,the mechanism can be made to jump to Track No. 28.8. Audio-related specifications• A short press of the Q key initiates the audio adjustmentmode.• Pressing the ✽ key on the remote initiates the audioadjustment mode.• Fader is selected to the initial item.• Continuous holding of a remote control key is inhibited.• Bass, Middle and Treble are adjusted in 3 steps of -8/0/+8with the Track Up/Down keys.• Balance is adjusted in 3 steps of L15/0/R15 with the TrackUp/Down keys.• Fader is adjusted in 3 steps of F15/0/R15 with the TrackUp/Down keys.• Volume Offset is adjusted in 2 steps of -8/0 with theTrackUp/Down keys.9. Menu-related specifications• A short press of the MENU key initiates the Menu mode.Except, tape source is usually press and hold 1 second toenter the menu mode and short press initiates turn over.• Pressing the DNPP/SBF key on the remote initiates theMenu mode.• Continuous holding of a remote control key is inhibited.• Contrast is adjusted in 3 steps of 0/5/10 (5x7dot), 0/4/7(14seg) with the Track Up/Down keys.10. Backup current measurement• When the unit is reset while ACC is OFF (i.e. by turningBack-Up ON), the MUTE terminal goes OFF in 2 secondsin place of 15 second.