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Audio System HU-803
Advanced User Mode and Hidden Menus
Prepared by Philippe Bruno, B.Eng.
[email protected]
Advanced User Mode
With the radio switched off, press and hold down [Volume] for at least 5 seconds.
! Turn [1-20/DISC] to select a function
! Press [1-20/DISC] to cycle between possible values
Function Description
SET TO DEFAULT Resets all AUM (Advanced User Mode) functions to
factory settings.
AF ON/OFF Automatic Frequency update – Ensures that the strongest
available transmitter for a program is selected.
REG LOCK/SWITCH Regional – Makes it possible to continue to listen to a
regional transmitter, even if the signal is weak.
EON LOCAL/DISTANT Enhanced Other Network – Determines whether the radio
program you are listening is to be switched off before a
traffic report or news broadcast (if these functions are
selected) only if the signal is strong (LOCAL) or whether
the radio must also try to capture weaker signals
(DISTANT).
NETWORK ALL/TUNED Network – Allows you to decide whether the radio
program you are listening is to be switched off before a
traffic report or news broadcast (if these functions are
selected) only if the report is on the channel you are
listening (TUNED), or whether the program is to be
switched off regardless of which radio channel the report
or broadcast is on (ALL).
ASC ON/OFF Active Sound Control – Automatically matches the sound
volume to the speed of the car.
ASC Low/Med/High Active Sound Control – Determines the ASC level.
SRC ON/OFF SRC = ? – Activates or deactivates the noise reduction in
poor reception conditions. Normally used when the radio
is in the AM band.
SRC Low/Med/High SRC = ? – Determines the SRC level.
BACK and SAVE Saves any changes and revert to normal operation.
BACK without SAVE Discards any changes and revert to normal operation.
Diagnostic Mode
With the radio switched off, press and hold down [AUTO], and press [Volume] to power
on the radio. The following will be displayed for 4 seconds:
DIAG WAIT!
Immediately followed by:
Main 23 Sub 25
For some reason, this last display seems to vary from time to time. Other observed values
are: Main 29 Sub 22 and Main 29 Sub 24.
! Turn [1-20/DISC] to select a function
Function Description
Main-A Exist ? (Display flashes)
Sub-A Exist ?
Ext-AMP Exist External amplifier detected.
Area Selection
With the radio switched off, press and hold down [1-20/DISC], press [Volume] to power
on the radio, and continue to hold down [1-20/DISC] for at least 5 seconds.
! Press [1-20/DISC] to cycle between possible values
! Turn [1-20/DISC] to select a function
Function Description
AREA EU/US/AU Allows you to select the area where the radio is to be used:
Europe (EU), North America (US) and Australia (AU).
BACK and SAVE Saves any changes and revert to normal operation.
If no selection is made within 5 seconds, the radio will discard any changes and revert to
normal operation.
Hidden Equalizer
With the radio switched off, press and hold down [SOURCE], press [Volume] to power
on the radio, and continue to hold down [SOURCE] for at least 5 seconds.
! Press [SOURCE] to select a function
! Turn [SOURCE] to adjust value
Function Description
FRONT Low1 3 Adjusts the very low frequencies in the front. Valid values
are from 0 to 6. Factory default for S60 is 4.
FRONT Low2 3 Adjusts the low frequencies in the front. Valid values are
from 0 to 6. Factory default for S60 is 4.
FRONT Mid 3 Adjusts the mid frequencies in the front. Valid values are
from 0 to 6. Factory default for S60 is 6.
FRONT High 3 Adjusts the high frequencies in the front. Valid values are
from 0 to 6. Factory default for S60 is 4.
REAR Low 3 Adjusts the low frequencies in the back. Valid values are
from 0 to 6. Factory default for S60 is 4.
REAR Mid 3 Adjusts the mid frequencies in the back. Valid values are
from 0 to 6. Factory default for S60 is 0.
REAR High 3 Adjusts the high frequencies in the back. Valid values are
from 0 to 6. Factory default for S60 is 6.
Noise Sequence OFF Activates the noise sequencer. A noise sequencer is
essentially a noise generator that allows the adjustment of
the levels in the system so to achieve the correct balance
between the different channels by injecting a noise signal
into each of the channels (left, right, centre, surround). Use
the sequencer to adjust the balance control until each of
the 4 channels individually plays at the same apparent
loudness from one of the front seats. Whilst sufficiently
accurate balance can usually be achieved by ear, you can
use a sound level meter if greater precision is desired. To
use this function, the radio must be in Dolby Pro Logic
mode. Possible values are: Lch (left channel), Rch (right
channel), Cch (center channel), Sch (surround channel) or
OFF.
Advanced Diagnostic Menu
With the radio switched off, press and hold down [!], press [Volume] to power on the
radio, and continue to hold down [!] for at least 5 seconds.
NOTE: The radio source must be “RADIO FM” for this menu to appear.
! Turn [1-20/DISC] to select a function
! Press [1-20/DISC] to enter sub-function or cycle between possible values
Function Sub-Function Description
Ver 1316SP72 00 04 Seems to be the version of the EEPROM.
DISPLAY CHECK Everything on
Half 1
Half 2
Blank
Accented characters
VOICE CHECK VOICE Lch ON ?
VOICE Rch ON ?
VOICE OFF ?
BEEP CHECK BEEP ON Turns on continuous beep signal.
BEEP OFF Turns off beep signal.
DTC CHECK Main-A Exist ? (Display flashes)
Sub-A Exist ?
Ext-AMP Exist External amplifier detected.
VOLUME CHECK VOLUME –xxdB Displays the current volume set by turning
[VOLUME]. The value of xx varies between
–82dB (silence) to –00dB (max volume).
Pressing [1-20/DISC] instantly sets the
volume to –27dB.
CD7 AUDIO ON/OFF ? – I don’t know what this does. When ON, a
strange TICK-A-TICK noise can be heard.
REASON Int ON/OFF ?
STOP ADJUST STOP 26db LV=xx 67 ? – I don’t know what this does. The value of
xx varies continuously: DD, DA, DE, etc.
AF-C ADJUST AF-C 47dB LV=xx A2 ? – I don’t know what this does. The value of
xx varies continuously: DD, DC, DE, etc.
EEPROM INTIALIZE EEPROM WAIT Reinitialises the EEPROM. After a few
seconds, the display shows: EEPROM
INITIALIZED.
EJ+<< ENTRY ON/OFF This is strange. I though it changed the
button sequence required to enter the
Advanced Diagnostic Menu to ["] + [!]
and [VOLUME] but I am not sure of what
happened. It might have prevented me from
accessing this menu if the radio source is
CD.
Fix All 3 Settings
With the radio switched off, press and hold down [#], press [Volume] to power on the
radio, and continue to hold down [#] for at least 5 seconds.
Function Description
FIX ALL3 SETTING ? – I don’t know what are those 3 settings.
The above message is displayed for 3 seconds and then the radio reverts to normal
operations.
Extended Settings
With the radio switched off, press and hold down [$], press [Volume] to power on the
radio, and continue to hold down [$] for at least 5 seconds.
! Turn [1-20/DISC] to select a function
! Press [1-20/DISC] to enter sub-function or cycle between possible values
! Turn [SOURCE] to adjust value
Function Sub-Function Description
DIVER TEST ON/OFF Activates the diversity test. When activated,
a little 1 or 2 appears to the right of the FM
indicator on the display. I am not sure of the
purpose of that test but it seems it shows
which antenna has the strongest reception
as it alternates between 1 and 2 as the car
moves.
REASON Int ON/OFF ?
CONSTANT Disp >>>> ASC/BAR/DAB/PI/OFF Uses the radio display to constantly display
some information on one of the following
functions:
ASC (Active Sound Control)
M 0km>-57+00=-57
The first value is the ASC level (L=Low,
M=Med, H=High), followed by the current
speed (in km/h), the volume level (in dB),
the correction factor and the adjusted
volume (in dB). The correction factors,
depending on the ASC level and the speed,
are determined as follows:
Speed (km/h)
Corr. L M H
+1 72 48 40
+2 104 72 56
+3 136 96 64
+4 ... 120 80
+5 144 88
+6 ... 104
+7 112
+8 128
+9 ...
BAR (?)
- C
This seems to be the signal strength of the 2
aerials. The HU-803 is equipped with a
“Diversity Aerial System” that allows the
radio to automatically select, from one of
the two aerials, the strongest signal for the
best possible reception (on the FM band).
The bar on the left seems to correspond to
aerial 2 and the bar on the right to aerial 1.
DAB (Digital Audio Broadcasting)
5A 0 0 0000 00
I haven’t found the purpose of that display.
PI (Program Info???)
107.34A2D C500C3 C
The first 5 digits (“107.3” in this case) are
the frequency of the selected radio station,
the 4 next digits (“4A2D” in this case) seem
to be the additional info such as the station
name, news availability, etc. Finally, the 6
following digits (“C500C3” in this case)
represent the signal strength of aerial 2
(“C5” in hexadecimal notation), “00” (I
don’t know) and the signal strength of aerial
1 (“C3” in hexadecimal notation).
LEVEL Setting >>>> LVA 12dBu 37H
LVB 19dBu 56H
LVC 26dBu 67H
LVD 33dBu 6AH
LVE 40dBu 86H
LVF 47dBu A2H
LVG 54dBu A9H
LVH SM Drop 4DH
LVI AM Drop 2AH
LVJ DIV FIX 60H
LVK DIV M<->S 10H
LVL NOISE 10H
LVN DIV SMJUD 50H
EXIT
AFS Setting >>>>>> NORMAL Trig 15ms
NORMAL Min 1500ms
SMETER Trig 20ms
SMETER Min 1000ms
TUNNEL Min 60s
+LV AF 27H
+LV REG 47H
+TQ AF 10H
+TQ REG 47H
LOW AF 6T
EXIT
DAB Setting >>>>>> LINKAGE ->FM 5S
LINK TO FM BER 3H
LINKAGE -> DAB 5s
LINK TO DAB BAR 4H
DAB PTY/TA-R 30s
DAB BG(TP) 60s
EXIT
OTHER Setting >>>> DIVER Timer 5000ms
DIVER S<->M 5ms
SRC Detail 0H
TC Timer 900ms
RC Timer 900ms
FM BG(TP) 45s
FM BG(SID) 180s
PI Defect 600ms
NORDS Defect 56ms
RDS Judge 40.0ms
PLL Lock 0.1ms
SM Wait AFS 0ms
SM Wait Round 5ms
EON Wait 2s
EON Prohibit 3s
PRE FAST-M 1.2ms
POST FAST-M 2.5ms
BASS LIMIT Max+1 Varies from Max-6 to Max+6
BASS LIMIT Step2
REASON Time 1000ms
DIV LVK UP 20H
DIV KUP COUNT 1H
DIV KDNTIM 500ms
EXIT
NS TABLE Setting > 0-000/1-0BF/2-11F
3-17F/4-1DF/5-23F
6-29F/7-2FF/8-35F
9-3BF/A-41F/B-47F
C-4DF/D-53F/E-59F
EXIT
AF Status >>>>>>>>
POOL Status >>>>>>
EEPROM >>>>>>>>>>>
TP SEARCH ON/OFF
RESET Run
TEST Exit
tack så mycket för hjälpen mvh!
men du tycks ju ha bra koll, så du kanske har lust att föra din kunskap vidare och förklara för mig lite hur det fungerar mvh 
mvh
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