Philips FR-975, Руководство по обслуживанию

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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
Yes
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
Yes
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
Yes
Virt. Mode
Button pressed?
Yes
Yes
Replace MDM
module
Virt. Mode
Button pressed?
Yes
Yes
Yes
Yes
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
Yes
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
Yes
Yes
Yes
Yes
Press Virt. Mode
Button
*Audio Signals Test Disc 1 = SBC429
4822 397 30184
SPDIF - Sony Philips Digital Inter Face
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