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Diagnostic Software Descriptions and Troubleshooting
Ref.#
Command Name Remarks
21a
AudioSineOn
----
Press stop button Audio Sine
20a
AudioPinkNoiseO
n
20b
AudioPinkNoiseOf
f
The audio signal ( sine or pink noise ) will also be present on
the digital output ( SPDIF ).This can be checked by connecting
digital signal to an amplifier with digital input.
Check the I2S and audio signal at the following testpoints:
Name
LRCLK
BCLK
PCM_CLK
SDT3
SDT2
SDT1
DIG_OUT
AUDIO L/R OUT
FRONT L/R OUT
SURROUND L/R OUT
CENTRE OUT
SUB WOOFER L/R OUT
All waveforms can be refered to the A/V schematic diagram.
5.11.4 Video Output And Buffer Amplifier
Check DC output-level at all video cinch output : 1.0V DC ±
10%
Generate a color bar using the following software commands:
Ref.#
Command Name Remarks
23a
VideoColDencOn
23b
VideoColDencOff
Check the video outputs at the following testpoints:
Name
Testpoint
B_VID
I500 / I553
G_VID
I502 / I554
R_VID
I503 / I555
CVBS out
I562 / I560
S-Video-C out I566
S-Video-Y out I565
Y out
I572
U out
I576
V out
I582
ll waveforms can be refered to the A/V schematic diagram.
5.11.5 Play and 16/9 Detection
Check DC voltage at S-Video-chroma output (pin 4) with a 6K8
ohm load and Scart connector (pin 8) and change the 0/6/12
input (1405-8) using the following commands:
Command
Ref.#
Name
25a
VideoScartLo
25b
VideoScartMi
Audio output
Audio Sine
Sine,1Khz on
signal ON
stereo
No waveform
signal OFF
Audio
Pink Noise on
Pinknoise ON
6 channels
Audio
No waveform
Pinknoise OFF
Testpoint
I117
I118
I165
I112
I114
I116
I583
I321 / I322
I326 / I328
I333 / I337
I410
I407
Colour DENC ON
Colourbar DENC OFF
Remarks
Chroma output
Sends out 0V
<0.1V
0.5V
Sends out 6V
2.0V 10% with
10%
load
SACD 900
Command
Ref.#
Name
25c
VideoScartHi
5.11.6 Kill Circuit
To check the functionality of the Kill circuitry,the audio outputs
has to be present by the following command:
Command
Ref.#
Name
21a
AudioPinkNois
eOn
Check the audio outputs at the audio cinch of the A/V board :
Pink Noise
Activate the Kill circuit by using the following command:
Ref.#
Command Name Remarks
19a
AudioMuteOn
Check the audio outputs at the audio cinch of the A/V board :
No waveform
Switch off the kill circuit by using the following command:
Ref.#
Command Name Remarks
19b
AudioMuteOff
Check the audio outputs at the audio cinch of the A/V board :
Pink Noise
5.11.7 Base Management
To check the Base management, the audio signal has to be
present with the command: AudioPinknoise ON.
Activate the Base management and check the audio Pinknoise
amplitude at the Subwoofer audio cinch outputs.
Command
Ref.#
Name
69a
Base Normal
69b
Base
Management
5.
EN 51
Remarks
Chroma output
5.0V 10%
without load
Sends out 12V
<0.1V
10%
Remarks
Audio output
Audio Pinknoise
Pink Noise on 6
ON
channels
Audio Mute On
Audio Mute Off
Subwoofer
Remarks
Output
Base Mgt OFF
Amplitude <
200mVpp
Base Mgt ON
Amplitude <
1Vpp
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