Yamaha-DSP5D-mix-sm 电路图 维修手册.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 RadioFans.CN 收音机爱 好者资料库 101 DSP5D (5) OMNI OUT 1 24 level difference Confi rm the range of difference in the gain measured in item (1) is as follows. Permissible Range Within -1 dBu (6) Crosstalk between adjacent channels (OMNI OUT 1 24) Parameters: Tu
2、rn on only OMNI OUT of one odd number 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 Frequency Output Level (Odd Channel) Permissible Range (Even Channel) 1 kHz+23 dBu-57 dBu or
3、 less Perform the same check on the even number channel side. (7) Maximum output (OMNI OUT 1 24) Parameters: Assign only the built-in oscillator to OMNI OUT 1 24. Input Frequency Output Level Permissible Range Permissible Range (Distortion) 1 kHz+24 dBu+24 0.5 dBu0.006 % or less 2-1-2. CH IN 1 48 ,
4、ST IN 1 4 (L, R) Parameters: Use OMNI OUT 23 to 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 (C
5、H IN 1 48, ST IN 1 4 (L, R) Input FrequencyInput Level Specifi ed Output LevelPermissible Range 1 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 Range 20 Hz
6、-62 dBu-1.5 0.5 dB 40 kHz-62 dBu-1.5 0.5 dB (3) Distortion (CH IN 1 48, ST IN 1 4 (L, R) Input FrequencyOutput Level Permissible Range 1 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 less If th
7、e measured value is out of the above permissible range, confi rm the 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 Range Within 2
8、dBu B. GAIN MIN (1) Gain (CH IN 1 48, ST IN 1 4 (L, R) Input FrequencyInput Level Specifi ed Output LevelPermissible Range 1 kHz+10 dBu+4 dBu+4 2dBu (2) Distortion factor (CH IN 1 48, ST IN 1 4 (L, R) Input FrequencyOutput Level Permissible Range 1 kHz+22 dBu0.007 % or less (3) Noise level (CH IN 1
9、48, ST IN 1 4 (L, R) Parameters: Short CH IN and ST IN to be measured with 150 . Permissible Range -80 dBu or less C. 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 s
10、witch is turned on is as follows. Permissible Range DC 33 V 37 V Also, check that discharging 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 24 Parameters: Input from INPUT (XLR) of CH1. Turn on the channel t
11、o be measured only. Assign CH1 to OMNI 1 24 and set all MIX SEND LEVEL to NOMINAL (0 dB). (1) Distortion (OMNI OUT 1 24) Input FrequencyOutput Level Permissible Range 1 kHz+22 dBu0.015 % or less (2) Residual noise (OMNI OUT 1 24) Parameters: Turn off OMNI 1 24. Permissible Range -86 dBu or less DSP5
12、D 102 2-2-1. 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 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
13、. Set the GAIN to minimum. (1) Distortion factor (CH IN 1 48, ST IN 1 4 (L, R) Input FrequencyOutput Level Permissible Range 1 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 less 2-3. PL
14、L Operating Range of WORD CLOCK IN Parameters: Use System Two. Use OMNI OUT 23 when measuring the L channel. Use 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 oscil
15、lator to 96 kHz +2.5 %. (1) Distortion Input FrequencyOutput Level Permissible Range 1 kHz+22 dBu0.006 % or less B. 44.1 kHz -2.5 % (42.9975 kHz) Parameters: Set the frequency of the oscillator to 44.1 kHz -2.5 %. (1) Distortion Input FrequencyOutput Level Permissible Range 1 kHz+22 dBu0.02 % or les
16、s 2-4. Jitter Measurement Parameters: Use System Two. Select Sec, PK. BW: Select 700 Hz to 100 kHz. Insert MY8-AE96 to the slot 1 and check its CH1 output. A. WORD CLOCK INT Parameters: Select the WORD CLOCK values shown in the following table. (1) Jitter WORD CLOCKPermissible Range INT 44.1 kHz2 ns
17、ec or less INT 48 kHz2 nsec or less INT 88.2 kHz2 nsec or less INT 96 kHz2 nsec or less B. WORD CLOCK EXT Parameters: Select WC IN for 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 CLOCKPer
18、missible Range 44.1 kHz5 nsec or less 48 kHz5 nsec or less 88.2 kHz5 nsec or less 96 kHz5 nsec or less 2-5. Sound Check Check the following items by listening (1) ANALOG INPUT, ANALOG OUTPUT Parameters: Check CH1, CH14, CH25 and CH38 with OMNI OUT 23 (L) and 24 (R). Set WORD CLOCK to INT 96 kHz. (2)
19、 EFFECT function (DSP6 operation check) Parameters: Use the “SERVICE1.PM5” fi le for “sound scene data”. * Download from YAMAHA homepage. Set WORD 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.
20、 Listen to STEREO OUT or PHONES OUT. INSPECTIONS Recall scene 5 (Reverb) and check the signal for at least 15 seconds. Judgment criteria 1: The EFFECT 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 liste
21、ning. The scene numbers and EFFECT types are as follows. Scene No.EFFECT No.EFFECT TYPE 51Reverb 61Symphonic 71HQ Pitch 81Dynamic Filter 92Reverb 103 DSP5D Scene No.EFFECT No.EFFECT TYPE 102Symphonic 112HQ Pitch 122Dynamic Filter 133Reverb 143Symphonic 153HQ Pitch 163Dynamic Filter 174Reverb 184Symp
22、honic 194HQ Pitch 204Dynamic Filter 215Reverb 225Symphonic 235HQ Pitch 245Dynamic Filter 256Reverb 266Symphonic 276HQ Pitch 286Dynamic Filter 297Reverb 307Symphonic 317HQ Pitch 327Dynamic Filter 338Reverb 348Symphonic 358HQ Pitch 368Dynamic Filter 2-6. Fan HIGH, LOW Switch Check Check that the rotat
23、ing 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 to LOW side. 2-7. Power supply unit output voltage check After turning on the power, check the voltage between No. 1 pin (+
24、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 the voltage range with the voltage adjustment volume VR601 of the power supply unit (WE22290). 2-8. Power Supply CAUTIO
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