Marantz SR4000 Service Manual - Page 46

9-2 MULTI-CHANNEL DECODING MODULE - Troubleshooting To start service test program hold Bass & Treble depressed while switching the mains on 3D No Button pressed? Yes Does the MDM SW-version No appear in the screen? Yes 3D Button pressed? Yes Connect CD player to Coax 1 Play track 15 of *Audio SignalsTest Disc 1 Yes Can sound be heard on ALL No Channels ? Yes 3D Button pressed? Yes Connect CD player to Coax 2 Play track 15 of *Audio SignalsTest Disc 1 Yes Can sound be heard on ALL No Channels ? Yes Press 3D Button Yes Connect CD player to Opto In Play track 15 of *Audio SignalsTest Disc 1 Yes Can sound be heard on ALL No Channels ? Yes Press 3D Button Yes Connect CD player to the Analog CD-input Play track 15 of *Audio SignalsTest Disc 1 Yes Can sound be heard on ALL No Channels ? Yes Does a Sine-wave of 1kHz No appear on the Digital Output? Yes MDM is working properly MDM TEST No Is 5V present on pin 6 conn. 1521? Is +12V present on pin 11 conn. 1521? Is -12V present on pin 12 conn. 1521? Yes At this moment the MDM module is set to "Service mode" Check the relevant components of the missing voltage on the monoboard Replace MDM module Use a CD-player with a Digital Out Replace MDM module Replace MDM module Use a CD-player with an Optical Out Replace MDM module Replace MDM module Replace MDM module *Audio Signals Test Disc 1 = SBC429 4822 397 30184