Service Manuals, User Guides, Schematic Diagrams or docs for : BOSE Audio AV-3-2-1 SM TG_pages23-39

<< Back | Home

Most service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.




Image preview - the first page of the document
TG_pages23-39


>> Download TG_pages23-39 documenatation <<

Text preview - extract from the document
                                         Composite
                                                             Video
                                         or S-Video
                                                             Monitor
                                               input
            Audio Signal
            Generator




                                                                                     Figure 2. 321 Console Test Setup Diagram
         SPDIF converter
                                                          dB meter
                            Audio,
        Optical converter   SPDIF
                                                         Audio output
                            or Optical
                            input




                                                                                                                                23
                                                                           IBM
                                                                        compatible
 +15V                                                                       PC
            Console DC power
            test cable                   3-2-1 Console
                                                            TAP cable
DC power
supply                                   RF input
                    RF Signal
                    Generator
                            Audio signal
                             generator


                        Bass
                     module                           Distortion
                   test cable                           meter




                                                       dB meter
Bass Module



         AC mains cable


      Figure 3. 321 Bass Module Test Setup Diagram




    Driver 1 + terminal                    Driver 2 + terminal

     Driver 1 - terminal                   Driver 2 - terminal




Figure 4. 321 and 321 GS Satellite Speaker Wiring Diagram
                                24
                              TEST PROCEDURES
Console Procedures                                      2.2 Connect the output of the S/PDIF con-
                                                        verter to the VIDEO 1 coaxial digital input.
CAUTION: The DVD drive mechanism should
not be closed by pushing it shut with no power          2.3 Apply a 500 mV, 1 kHz signal to the
applied to the console. Doing so could damage           analog input of the S/PDIF converter.
the drive. It must be closed with power applied
so that the locking mechanism inside the drive          2.4 On the console, select the VIDEO 1
will engage properly when the drawer is                 source.
closed.
                                                        2.5 Measure the output level at the line
 Equipment required:                                    outputs on the console rear panel. It should
                                                        be 300 mVrms + 10%.
 Audio signal generator
 Digital multimeter                                     2.6 Repeat steps 3.1 to 3.5 for the VIDEO 2
 Analog to S/PDIF converter                             digital coaxial input.
 S/PDIF to optical converter
 AM/FM signal generator                                 2.7 Repeat steps 3.1 to 3.5 for the AUX
 Video signal generator or DVD player                   digital coaxial input.
 Abex test DVD (TDV-540A)
 Video monitor                                         3. Optical Digital Audio Test
 DC power supply or bass module w/cable
 Composite Video cable                                  3.1 Connect the audio signal generator to
 S-Video cable                                          the input of the analog to S/PDIF converter.
 Optical cable
                                                        3.2 Connect the output of the S/PDIF con-
 Test Setup                                             verter to the input of the S/PDIF to optical
                                                        converter.
 Set up the unit under test as shown in
 Figure 2 for the following tests.                      3.3 Connect the output of the optical con-
                                                        verter to the VIDEO 1 optical input.
1. Analog Audio Test
                                                        3.4 Apply a 250 mV, 1 kHz signal to the
 1.1 Apply a 1 Vrms, 1 kHz signal to the left           analog input of the S/PDIF converter.
 and right VIDEO 1 audio analog inputs.
                                                        3.5 On the console, select the VIDEO 1
 1.2 On the console, select the VIDEO 1                 source.
 input.
                                                        3.6 Measure the output level at the line
 1.3 Measure the output level at the audio              outputs on the console rear panel. It should
 outputs on the console rear panel. It should           be 150 mVrms + 10%.
 be 470 mVrms + 10%.
                                                       4. Video Tests
 1.4 Repeat steps 1.1 to 1.3 for the VIDEO 2
 and AUX audio analog inputs.                           4.1 Connect the video generator or DVD
                                                        player to the COMPOSITE VIDEO INPUT
2. Coaxial Digital Audio Test                           only.

 2.1 Connect the audio signal generator to              4.2 Connect the video monitor to the COM-
 the input of the analog to S/PDIF converter.           POSITE VIDEO OUTPUT.



                                                  25
                              TEST PROCEDURES
 4.3 Set the video generator to display a test          6.3 On the 3-2-1 system remote control,
 pattern. If using a DVD player, load a DVD             press the CD/DVD button to start playback
 disc into the tray and start playback.                 of the DVD disc.

 4.4 On the console, select the VIDEO 1                 6.4 Verify that the audio plays.
 source.
                                                       7. CD Playability Tests
 4.5 Confirm that the test pattern or DVD
 video appears on the video monitor and that            Test discs required:
 there are no obvious video problems.                   ABEX TCD-714R
                                                        ABEX TCD-721R
 4.6 Connect the video generator or DVD                 ABEX TCD-725R
 player to the S-VIDEO input only.                      ABEX TCD-732R
                                                        Philips TS4
 4.7 Connect the video monitor to the
 S-VIDEO output.                                        7.1 Insert the ABEX TCD-725R test disc
                                                        into the console CD/DVD tray.
 4.8 Set the video generator to display a test          



◦ Jabse Service Manual Search 2019 ◦ Jabse Pravopis ◦ Other service manual resources online : FixyaeServiceinfo