Philips SD-5.31SL, Service Manual

Page: 13 / 64

Test Instructions Mono Board SD5.31SL
EN 13 SD-5.31SL 5.
Table 5-7 NVRAM Write/Read check command
5.4.2 Audio Clock Check
The internally generated Audio clock can be set to either 44.1
kHz (CD_DA), 48 kHz (DVD) or 96 kHZ (DVD). To check the
different mode, use the following commands and measure the
waveform as correct operation cannot be detected by the
Diagnostic Software.
Table 5-8 Audio clock check
Figure 5-7 Internal PLL CLK in CDDA mode
Figure 5-8 Internal PLL CLK in DVD48kHz mode
Figure 5-9 Internal PLL CLK in DVD96kHz mode
5.4.3 Audio Mute Check
Switch on the Mute circuit by sending next command:
Table 5-9 Audio mute ON check command
Check the Mute output again at testpoint F603: 3V3
±
10%
Switch off the Mute circuit by sending next command
Table 5-10 Audio mute OFF check command
Check the Mute output at testpoint F603: 0V
±
0.3V
5.4.4 Audio I2S Check
To check the audio output from the internal audio DAC on the
Monoboard, execute the following commands and observe the
I2S audio outputs for both sine and pink noise.
Table 5-11 Audio I2S check commands
The audio signal (sine or pink noise) will also be present on the
digital ouput (SPDif). This can be checked by connecting an
amplifier with digital input.
Check the I2S output.
Ref. # Command Name Remark
15 PapNvramWrR NVRAM Write Read
Ref #
Command
Name
Remark
Test
point Frequency
8a PapSgsAclk
Cdda Internal PLL
CLK in CD-DA
mode (Fig 5-4) F421 16.934 MHz
±
0.02%
8b PapSgsAclk
Dvd Internal PLL
CLK in DVD
mode (Fig 5-5) F421 18.432 MHz
±
0.02%
8c PapSgsAclk
Dvd96 Internal PLL
CLK in DVD
mode (Fig 5-6) F421 36.864 MHz
±
0.02%
1
ch1 ch1 freq 18.5Mhz
CH1 1.00V= MTB 20.0ns ch1+
PM3380B
CL 36532043_057.eps
030603
1
ch1 ch1 freq 18.4MHz
CH1 1.0 V= MTB 20.0ns ch1+
PM3380B
CL 36532043_059.eps
030603
Ref. # Command Name Remark
19a AudioMuteOn AudioMuteOn
Ref. # Command Name Remark
19a AudioMuteOff AudioMuteOff
Ref. #
Command
Name
Remark Audio outputs
21a AudioSineOn Audio Sine
signal Off
Audio Sine signal On
Sine, 1kHz on stereo
Press stop button
20a AudioPinkNoi
seOn Audio
Pinknoise
On Pink Noise on 6
channels
20b AudioPinkNoi
seOff Audio
Pinknoise
Off
1
ch1 ch1 freq 36.9MHz
CH1 1.00V= MTB 20.0ns ch1+
PM3380B
CL 36532043_060.eps
030603