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MARANTZ SR4000
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of MARANTZ SR4000 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 40 (click to view)
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Test 13a : Select track 5 : For 1 kHz in Center channel and measure the crosstalk in Left, Right, Surround. Requirement : < -25 dB Test 14a : Select track 6 : For 1 kHz in Surround channel and measure the crosstalk in Left, Center, Right. Requirement : < -25 dB 2- Centre mode �normal� (use 3 kHz or 1 kHz tone) Test 11b : Select track 3 : For 3 kHz in Left channel and measure the crosstalk in Center, Right, Surround Requirement : < -25 dB Test 12b : Select track 4 : For 3 kHz in Right channel and measure the crosstalk in Surround, Left, Center Requirement : < -25 dB Test 13b : Select track 5 : For 3 kHz in Centre channel and measure the crosstalk in Left, Right, Surround Requirement : < -25 dB Test 14b : Select track 6 : For 1 kHz in Surround channel and measure the crosstalk in Left, Center, Right Requirement : < -25 dB Inputs overload test (headroom to visible clipping) General : Before starting these tests set Master Volume -15 dB lower to make a new output reference (1W on loudresistors). Requirement : check on scope for no visible signal clipping or measure THD <1,5 % Test 15 : Select track 7 : Check the Left output signal between 20 Hz ... 20 kHz Test 16 : Select track 8 : Check the Right output signal between 20 Hz ... 20 kHz Test 17 : Select track 9 : Check the Center output signal CENTER �SMALL� between 100 Hz ... 20 kHz CENTER �LARGE� between 20 Hz ... 20 kHz Test 18 : Select track 11 : Check the Surround output signal between 50 Hz ... 7 kHz Test 19 :Center Mode Check Select Center size �SMALL�. a - Select track 5 at 1 kHz : Adjust the Center output again with master volume for 1W output as 0 dB reference. b - Select on track 5 the 100 Hz : Signal to check the roll-off behaviour at -3 dB on the Center output c - Select on track 5 the 50 Hz : Signal and measure on the Left and Right output channels. The lost 50 Hz signal on the Center output is equally splitted and added to the L and R channels. Test 20 : Center Mode Check Select Center size �LARGE� Repeat test 19 a,b and c The difference is no roll off behaviour at 100 Hz (Center) and no splitted bass (50 Hz signal) added to L and R.

Test 21 : Center Mode Check Select Center mode phantom = Center speaker �No� Select track 5 (20 Hz ... 20 kHz) : No output signals on the Center output or at least minimum -40 dB related to 1W outputs. Measure now on the Left and Right output channels : the lost Center signals are equally splitted and added to these left and right channels (- 3 dB) Test 22 : 3 CH mode control Select Front 3 stereo (Rear speaker �No�) Select track 6 (100 Hz ... 7 kHz): No output signals on the Surround output channel or at least minimum -40 dB related to 1W output. Measure now at the Left and Right output channels : the lost Surround signals are equally splitted and added to the Left and Right output channels (-3 dB) Test 23 : 2 CH mode control (stereo) Select Surround �OFF� Select track 5 : No output on Centre output channel Select track 6 : No output on Surround output channel Test 24 : Time delay control in Surround channel Principle description encoded burst signal spots (see fig. 1) 1- Tone burst 1 kHz during 1 msec with interval time at 20 msec are given at the same time to the L ; R inputs. t t (in phase 0�) 2- The next tone burst is given at the same time to the L R input, but in reverse phase to the R input (180�). t t t These 2 tone bursts are repeated continuously during 2 minutes. Principle description decoded signal spots in Center/Surround channel - In case of 20 msec time delay mode the results are shown in fig. 1 in Center and Surround channel. The center spots in Center channel can be used as ìMarkerî spots (trigger signal) � repeated every 40 msec. The delayed surround spots occur at the same time as the center spots (markers) - When time delay mode is changed to 15 msec the delayed surround spots move to the left with respect to the centre mark spots. - When time delay mode is changed to 25 msec or 30 msec the delayed surround spots move to the right with respect to the center spots. - In case of no time delay ! (faulty condition) the surround spots fall just between 2 center markers spots (20 msec) How to check with a double beam scope WARNING: Be sure that the ground connection (-) of each instrument is not connecteded with the safety earth � connection. To avoid damage to output amplifiers (balance type) Use only cinch (input) ground connection Select Pro Logic size �LARGE� or �SMALL� (phantom in case of no Center output.) Select 20 msec time delay in Surround channel. Adjust scope at 5 msec/division and trigger at A input Connect input A to Center channel (or L or R in case of phantom mode) Connect input B to Surround channel Adjust trigger level and the X position to set pulse A in the middle of the scope . see fig.2 (if L or R used in phantom mode choose the largest (amplitude) pulse. see fig 3 Select track 24: Pulse A = 20 msec marker Pulse B = delayed surround signal pulse marker = A (adjust with X position) marker = A

A B

A B

20msec time delay
Fig 2 Fig 3

20msec in case of phantom mode

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