Bose 321 tg pages23 39

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24 Figure 3. 3
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1 Bass Module Test Setup Diagram Figure 4. 3
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1 and 3
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1 GS Satellite Speaker Wiring Diagram Bass Module Audio signal generator Distortion meter dB meter Bass module test cable AC mains cable Driver 1 + terminal Driver 1 - terminal Driver 2 - terminalDriver 2 + terminal

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25 Console Procedures CAUTION: The DVD drive mechanism should not be closed by pushing it shut with no power applied to the console. Doing so could damage the drive. It must be closed with power applied so that the locking mechanism inside the drive will engage properly when the drawer is closed. Equipment required: Audio signal generator Digital multimeter Analog to S/PDIF converter S/PDIF to optical converter AM/FM signal generator Video signal generator or DVD player Abex test DVD (TDV-540A) Video monitor DC power supply or bass module w/cable Composite Video cable S-Video cable Optical cable Test Setup Set up the unit under test as shown in Figure 2 for the following tests. 1. Analog Audio Test 1.1 Apply a 1 Vrms, 1 kHz signal to the left and right VIDEO 1 audio analog inputs. 1.2 On the console, select the VIDEO 1 input. 1.3 Measure the output level at the audio outputs on the console rear panel. It should be 470 mVrms + 10%. 1.4 Repeat steps 1.1 to 1.3 for the VIDEO 2 and AUX audio analog inputs. 2. Coaxial Digital Audio Test 2.1 Connect the audio signal generator to the input of the analog to S/PDIF converter.2.2 Connect the output of the S/PDIF con- verter to the VIDEO 1 coaxial digital input. 2.3 Apply a 500 mV, 1 kHz signal to the analog input of the S/PDIF converter. 2.4 On the console, select the VIDEO 1 source. 2.5 Measure the output level at the line outputs on the console rear panel. It should be 300 mVrms + 10%. 2.6 Repeat steps 3.1 to 3.5 for the VIDEO 2 digital coaxial input. 2.7 Repeat steps 3.1 to 3.5 for the AUX digital coaxial input. 3. Optical Digital Audio Test 3.1 Connect the audio signal generator to the input of the analog to S/PDIF converter. 3.2 Connect the output of the S/PDIF con- verter to the input of the S/PDIF to optical conver ter. 3.3 Connect the output of the optical con- verter to the VIDEO 1 optical input. 3.4 Apply a 250 mV, 1 kHz signal to the analog input of the S/PDIF converter. 3.5 On the console, select the VIDEO 1 source. 3.6 Measure the output level at the line outputs on the console rear panel. It should be 150 mVrms + 10%. 4. Video Tests 4.1 Connect the video generator or DVD player to the COMPOSITE VIDEO INPUT only. 4.2 Connect the video monitor to the COM- POSITE VIDEO OUTPUT. TEST PROCEDURES