Irrespective of the position
of the key, switch on the radio by pressing the 'VOL PUSH ON/OFF'
knob (A) for more than a second.
Self Test: check on internal
communication between the microprocessor and the internal modules
of the Radio Press buttons '3' (B) and '6 RND' (C) at
the same time. Having started the acoustic test at the speakers,
press button '1 CD+' (E) to enter the Self Test mode.'COMMS TEST - PASS' should appear on the display.If the words 'CAN SYSTEM FAILURE' appear,
this means that the radio is not managing to converse with the vehicle
CAN.If the words 'SELF TEST FAILURE' appear,
this means that the internal microprocessor is not communicating
correctly with one or more of the internal modules (DSP, Tuner,
CD/Tape Controller, LCD).Checksum (internal EEPROM test)Press buttons '3' (B) and '6 RND' (C) at
the same time. Having started the acoustic test at the speakers,
press button '4' (F) to enter the mode (internal EEPROM test).Check that the words 'CHECKSUM - PASS' appear
on the display.If the words 'CHECKSYM - FAIL' appear on
the display, the diagnostic procedure is over and has failed.Check on operation of the displayPress buttons '3' (B) and '6 RND' (C) at
the same time. Having started the acoustic test at the speakers,
press the '5 RPT' button (H) to enter the 'Test Display' mode.All the pixels should be on in the display.
If some areas are not lit up in the display, the diagnostic procedure
is over and has failed.To exit the diagnostic procedures, switch
off the radio by pressing the 'VOL PUSH ON/OFF' button (A) for more
than a second and/or turn the ignition key OFF.
