Yamaha-DSP5D-mix-sm 维修电路原理图.pdf
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1、RadioFans.CN 收音机爱 好者资料库RadioFans.CN 收音机爱 好者资料库101DSP5D(5) OMNI OUT 1 24 level differenceConfi rm the range of difference in the gain measured in item (1) is as follows.Permissible RangeWithin -1 dBu(6) Crosstalk between adjacent channels (OMNI OUT 1 24)Parameters: Turn on only OMNI OUT of one odd nu
2、mber channel for output with OMNI OUT of the other channels turned off and measure the noise level of even number channels on both sides next to the odd number channel.Input FrequencyOutput Level(Odd Channel)Permissible Range (Even Channel)1 kHz+23 dBu-57 dBu or lessPerform the same check on the eve
3、n number channel side.(7) Maximum output (OMNI OUT 1 24)Parameters: Assign only the built-in oscillator to OMNI OUT 1 24.Input FrequencyOutput LevelPermissible RangePermissible Range (Distortion)1 kHz+24 dBu+24 0.5 dBu0.006 % or less2-1-2. CH IN 1 48 , ST IN 1 4 (L, R)Parameters: Use OMNI OUT 23 to
4、check CH IN 1 48. For ST IN 1 4 (L, R) inspection, set PAN of L channel fully to the L side and PAN of the R channel fully to the R side. Use OMNI OUT 23 when measuring the L channel and OMNI OUT 24 when measuring the R channel.A. GAIN MAX(1) Gain (CH IN 1 48, ST IN 1 4 (L, R)Input FrequencyInput Le
5、velSpecifi ed Output LevelPermissible Range1 kHz-62 dBu+4 dBu+4 2 dBu(2) Frequency characteristic (CH IN 1 48, ST IN 1 4 (L, R)Parameters: 1 kHz is used as the reference of the permissible range.Input FrequencyInput LevelPermissible Range20 Hz-62 dBu-1.5 0.5 dB40 kHz-62 dBu-1.5 0.5 dB(3) Distortion
6、(CH IN 1 48, ST IN 1 4 (L, R)Input FrequencyOutput Level Permissible Range1 kHz+22 dBu0.02% or less(4) Noise level EIN (CH IN 1 48, ST IN 1 4 (L, R)Parameters: Short CH IN to be measured with 150 .Permissible Range-61 dBu or lessIf the measured value is out of the above permissible range, confi rm t
7、he equivalent level is as follows.Measured value - (gain at 1 kHz) = -127(5) Level difference (CH IN 1 48, ST IN 1 4 (L, R)Confi rm the range of difference in the gain measured in item (1) is as follows.Permissible RangeWithin 2 dBuB. GAIN MIN(1) Gain (CH IN 1 48, ST IN 1 4 (L, R)Input FrequencyInpu
8、t LevelSpecifi ed Output LevelPermissible Range1 kHz+10 dBu+4 dBu+4 2dBu(2) Distortion factor (CH IN 1 48, ST IN 1 4 (L, R)Input FrequencyOutput Level Permissible Range1 kHz+22 dBu0.007 % or less(3) Noise level (CH IN 1 48, ST IN 1 4 (L, R)Parameters: Short CH IN and ST IN to be measured with 150 .P
9、ermissible Range-80 dBu or lessC. Phantom voltage (CH IN 1 48, ST IN 1 4 (L, R)With No. 2 and No. 3 pins of XLR shorted and 10 k load con-nected between No. 2 and No. 1 pins, confi rm the voltage when the phantom switch is turned on is as follows.Permissible RangeDC 33 V 37 VAlso, check that dischar
10、ging starts quickly when the phantom switch is turned off.2-2. Inspection of ANALOG IN/OUT when WORD CLOCK INT is at 48 kHz.2-2-1. OMNI OUT 1 24Parameters: Input from INPUT (XLR) of CH1. Turn on the channel to be measured only. Assign CH1 to OMNI 1 24 and set all MIX SEND LEVEL to NOMINAL (0 dB).(1)
11、 Distortion (OMNI OUT 1 24)Input FrequencyOutput Level Permissible Range1 kHz+22 dBu0.015 % or less(2) Residual noise (OMNI OUT 1 24)Parameters: Turn off OMNI 1 24.Permissible Range-86 dBu or lessDSP5D1022-2-1. CH IN 1 48, ST IN 1 4 (L, R)Parameters: Use OMNI OUT 23 to check CH IN 1 48. For ST IN 1
12、4 (L, R) inspection, set PAN of L channel fully to the L side and PAN of the R channel fully to the R side. Use OMNI OUT 23 when measuring the L channel and OMNI OUT 24 when measuring the R channel. Set the GAIN to minimum.(1) Distortion factor (CH IN 1 48, ST IN 1 4 (L, R)Input FrequencyOutput Leve
13、l Permissible Range1 kHz+22 dBu0.015 % or less(2) Noise level (CH IN 1 48, ST IN 1 4 (L, R)Parameters: Short CH IN and ST IN to be measured with 150 .Permissible Range-82 dBu or less2-3. PLL Operating Range of WORD CLOCK INParameters: Use System Two. Use OMNI OUT 23 when measuring the L channel. Use
14、 OMNI OUT 24 when measuring the R channel. Select WC IN for WORD CLOCK. Input from CH1 IN. Set the GAIN to minimum.A. 96 kHz +2.5 % (98.400 kHz)Parameters: Set the frequency of the oscillator to 96 kHz +2.5 %.(1) DistortionInput FrequencyOutput Level Permissible Range1 kHz+22 dBu0.006 % or lessB. 44
15、.1 kHz -2.5 % (42.9975 kHz)Parameters: Set the frequency of the oscillator to 44.1 kHz -2.5 %.(1) DistortionInput FrequencyOutput Level Permissible Range1 kHz+22 dBu0.02 % or less2-4. Jitter MeasurementParameters: Use System Two. Select Sec, PK. BW: Select 700 Hz to 100 kHz. Insert MY8-AE96 to the s
16、lot 1 and check its CH1 output.A. WORD CLOCK INTParameters: Select the WORD CLOCK values shown in the following table.(1) JitterWORD CLOCKPermissible RangeINT 44.1 kHz2 nsec or lessINT 48 kHz2 nsec or lessINT 88.2 kHz2 nsec or lessINT 96 kHz2 nsec or lessB. WORD CLOCK EXTParameters: Select WC IN for
17、 WORD CLOCK. When testing, set the frequency of the oscillator as given in the table below.(1) Jitter (all of WORD CLOCK IN and 2TR IN DIGITAL 1, 2, 3)WORD CLOCKPermissible Range44.1 kHz5 nsec or less48 kHz5 nsec or less88.2 kHz5 nsec or less96 kHz5 nsec or less2-5. Sound CheckCheck the following it
18、ems by listening(1) ANALOG INPUT, ANALOG OUTPUTParameters: Check CH1, CH14, CH25 and CH38 with OMNI OUT 23 (L) and 24 (R). Set WORD CLOCK to INT 96 kHz.(2) EFFECT function (DSP6 operation check)Parameters: Use the “SERVICE1.PM5” fi le for “sound scene data”. * Download from YAMAHA homepage. Set WORD
19、 CLOCK to INT 96 kHz. Input the music signal from ANALOG INPUT CH1 and adjust the GAIN knob so that the STEREO METER OVER does not light up for any scene. Listen to STEREO OUT or PHONES OUT.INSPECTIONSRecall scene 5 (Reverb) and check the signal for at least 15 seconds.Judgment criteria 1:The EFFECT
20、 sounds must be output.Judgment criteria 2:The output should be free from noise.In the same manner, recall scenes 6 through 36 and inspect by listening.The scene numbers and EFFECT types are as follows.Scene No.EFFECT No.EFFECT TYPE51Reverb61Symphonic71HQ Pitch 81Dynamic Filter 92Reverb 103DSP5DScen
21、e No.EFFECT No.EFFECT TYPE102Symphonic 112HQ Pitch 122Dynamic Filter 133Reverb 143Symphonic 153HQ Pitch 163Dynamic Filter 174Reverb 184Symphonic 194HQ Pitch 204Dynamic Filter 215Reverb225Symphonic235HQ Pitch245Dynamic Filter256Reverb266Symphonic276HQ Pitch286Dynamic Filter297Reverb307Symphonic317HQ
22、Pitch327Dynamic Filter338Reverb348Symphonic358HQ Pitch368Dynamic Filter2-6. Fan HIGH, LOW Switch CheckCheck that the rotating speed of the fans (2 pcs.) increases when the FAN HIGH, LOW switch on the rear panel is set to HIGH side and that the rotating speed of the fans (2 pcs.) decreases when set t
23、o LOW side.2-7. Power supply unit output voltage checkAfter turning on the power, check the voltage between No. 1 pin (+24 V) and No. 15 pin (GND) of the DC POWER INPUT terminal.Voltage value: +25.0 0.5 V* If the output voltage value is out of the above voltage range, adjust the value to be within t
24、he voltage range with the voltage adjustment volume VR601 of the power supply unit (WE22290).2-8. Power Supply CAUTION InspectionConnect the network terminal of the DSP5D and PC with an Ether cable. Start the DSP5D EDITOR from PC. Connect the PW800W to the DSP5D, turn on the power of the both and ch
25、eck the following:q Power Supply CAUTION Inspection of the Unit Check that “CAUTION” is shown on the PC when the power of only the DSP5D is turned off.w Power Supply CAUTION Inspection of the PW800W Check that “CAUTION” is shown on the PC when the pow-er of only the PW800W is turned off.DSP5D1041. 準
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