EN 27
5.
LX7500R
Diagnostic Software
STEP
AUD TEST 1
AUD TEST 2
AUD TEST 3
AUD TEST
4
AUD TEST
5
AUD TEST
6
AUD TEST
7
AUD TEST
8
AUD TEST
9
AUD TEST 1
0
AUD TEST
11
AUD TEST 1
2
AUD TEST
13
Tuner and DVD module are not switched on in these steps.
To check the inputs a signal has to be fed directly to Combi board, connectors 1202
respectively 1205 or 1701.
In all test steps with digital input signal (2, 3, 4, 10 and 11)
NO SIGNAL
will be shown on the display when the
SPDIF in/out IC 7603 does not recognize any signal.
Line in 1
any
Line out,
Amplifiers
Line out,
Amplifiers
Line out,
Amplifiers
Line out
Line out
Headph. out
Dig out,
Amplifiers
Dig out
Amplifiers
Amplifiers
Amplifiers
10 (-33dB)
Audio settings
DPL2 Music
DPL2 Music
Opt. in
1)
AC3/5.1/63Hz/
FS/Subw only
AC3/5.1/
10kHz/FS
AC3/5.1/
10kHz/FS
AC3/5.1/
10kHz/FS
AC3/5.1/
10kHz/FS
20 (-20dB)
Dig. out, Amplifiers
Muting
Coax in, Line out
Line in 1, Dig. out
Ext. 1, Line out
Ext. 1, Headph. out
Tuner input
DVD in
Treble
Line in 2, Amplifiers
DPL2 Music
0dB FS
0dB FS
DPL2 Music
DPL2 Music
DPL2 Music
-6dB FS
-6dB FS
-6dB FS
-10dB
-10dB
-12dB FS
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Coax in
1)
40 (0dB)
transistor mute
Coax in
1)
40 (0dB)
Line in 1
1kHz 1V
rms
1kHz/50Hz 1V
rms
40 (0dB)
Line in 2
34 (-6dB)
Ext. 1
1)
1kHz 1V
rms
40 (0dB)
Ext. 2
1)
1kHz 1V
rms
40 (0dB)
TUNER
1)
1kHz 150mV
rms
40 (0dB)
DVD in
1)
30 (-10dB)
30 (-10dB)
treble 5 (+10dB)
DVD in
1)
0 (-87dB)
transistor mute
Front in
(/17 only)
Ext. 3
(/17 only)
0 (-87dB)
INPUT
Input Signal
OUTPUT
Level
VOLUME
Tested
function
Speaker
setting
1)
Display shows
Sound ICs are set
acc. table 4
Switch to next step
acc. table 4
AUD TEST XX
Y
STOP
button
pressed?
N
Y
Switch to previous step
acc. table 4
T
button
pressed?
S
button
pressed?
N
Y
N
Y
COMBI BOARD
AUDIO
TEST
Press
PLAY button.
Back to main menu.
stands for the number
of the test step acc.
table 4.
XX
The AUDIO TEST is derived from a factory test defined to
test the Combi board as stand alone test object.
During the relevant test steps the Audio tuner and the
DVD module are not switched on.
Input signals have therefore to be fed in directly at the
dedicated sockets on the Combi board.
The defined input signals stated in table 4 are intended for
quantitative measurements of the different software settings.
For a quick test in repair workshops it is recommended
to use test step 1.
Test step 1 produces output on 6 channels.
This allows either a simple check of the signal path from
Line in 1-socket to Line out-socket and the headphone
amplifier or a complete check of all 6 channels inclusive
the power amplifiers.
At the beginning of the Audio test the user settings are set
to following default values:
Volume:
10 (-33dB)
Bass/Treble:
flat
Loudness:
off
Clear Voice:
off
Bass ALC:
on
All speaker outputs:
∆
Volume 0dB
During test step1 manual setting of the sound parameters is
possible. When test step 1 is left the default values will be
restored.
Press
S
or
T
button
and select
AUD TEST
servtest LX7500R sh 5, 111004
TEST STEPS
COMBI BOARD AUDIO TEST
