Philips FR975 - Page 46

PCS 102 496
8-2
To start service test
program hold
Bass & Treble depressed
while switching
the mains on
Virt. Mode
Button pressed?
Connect CD player to Coax 1
Play track 15 of
*Audio SignalsTest Disc 1
MDM
TEST
Ye s
No
Does the MDM SW-version
appear in the screen?
Replace MDM
module
At this moment the MDM module
is set to "Service mode"
Use a CD-player with
a coaxial digital out
Can sound be heard on ALL
Channels ?
No
Ye s
Connect CD player to Coax 2
Play track 15 of
*Audio SignalsTest Disc 1
Can sound be heard on ALL
Channels ?
No
Replace MDM
module
Connect CD player to Optical 1 In
Play track 15 of
*Audio SignalsTest Disc 1
Can sound be heard on ALL
Channels ?
No
Replace MDM
module
Use a CD-player with
an optical digital out
Connect CD player to the
Analog CD-input
Play track 15 of
*Audio SignalsTest Disc 1
Can sound be heard on ALL
Channels ?
No
Replace MDM
module
Does a valid
SPDIF -signal,
containing a sine-wave of 1kHz
appear on the coax out?
No
Replace MDM
module
MDM is working properly
Ye s
Virt. Mode
Button pressed?
Ye s
Ye s
Replace MDM
module
Virt. Mode
Button pressed?
Ye s
Ye s
Ye s
Ye s
Press Virt. Mode
Button
Yes
Yes
Yes
Press Virt. Mode
Button
Yes
Yes
Yes
No
MULTI-CHANNEL DECODING MODULE - Troubleshooting
Is 6V5 present on pin 6 conn. 1802?
Is +12V present on pin 11 conn. 1802?
Is -12V present on pin 12 conn. 1802?
Check the relevant
components of the
missing voltage on
the monoboard
Ye s
No
Connect CD player to Optical 2 In
Play track 15 of
*Audio SignalsTest Disc 1
Can sound be heard on ALL
Channels ?
No
Replace MDM
module
Use a CD-player with
an optical digital out
Ye s
Ye s
Ye s
Ye s
Press Virt. Mode
Button
*Audio Signals Test Disc 1 = SBC429
4822 397 30184
SPDIF - Sony Philips Digital Inter Face
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07/08/2012
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