Yamaha-DSP-5-D-Service-Manual-part-2电路原理图.pdf
《Yamaha-DSP-5-D-Service-Manual-part-2电路原理图.pdf》由会员分享,可在线阅读,更多相关《Yamaha-DSP-5-D-Service-Manual-part-2电路原理图.pdf(100页珍藏版)》请在收音机爱好者资料库上搜索。
1、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: Turn on only OMNI OUT of one odd number channel for output with OMNI OUT o
2、f 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 less Perform the same check on the even number channel side. (7) Maximu
3、m 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 , ST IN 1 4 (L, R) Parameters: Use OMNI OUT 23 to check CH IN 1 48. For ST
4、 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 Level Specifi ed Output
5、 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-62 dBu-1.5 0.5 dB 40 kHz-62 dBu-1.5 0.5 dB (3) Distortion (CH IN 1 48,
6、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 the measured value is out of the above permissible range, confi rm the equ
7、ivalent 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 dBu B. GAIN MIN (1) Gain (CH IN 1 48, ST IN 1 4 (L, R) Input FrequencyIn
8、put 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 48, ST IN 1 4 (L, R) Parameters: Short CH IN and ST IN to be measured wi
9、th 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 switch is turned on is as follows. Permissible Range DC 33 V 37 V Also, c
10、heck 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 to be measured only. Assign CH1 to OMNI 1 24 and set all MIX SEND LEVEL t
11、o 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 RadioFans.CN 收音机爱 好者资料库 DSP5D 102 2-2-1. CH IN 1 48, ST IN 1 4 (L, R) Parame
12、ters: 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. Set the GAIN to minimum. (1) Distortion factor
13、 (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. PLL Operating Range of WORD CLOCK IN Parameters: U
14、se 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 oscillator to 96 kHz +2.5 %. (1) Distortion Input Fre
15、quencyOutput 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 less 2-4. Jitter Measurement Parameters: Use System
16、 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 nsec or less INT 48 kHz2 nsec or less INT 88.2 kHz
17、2 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 CLOCKPermissible Range 44.1 kHz5 nsec or less 48 kHz5 ns
18、ec 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) EFFECT function (DSP6 operation check) Paramete
19、rs: 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. Listen to STEREO OUT or PHONES OUT. INSPECTIONS
20、 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 listening. The scene numbers and EFFECT types are as
21、follows. Scene No.EFFECT No.EFFECT TYPE 51Reverb 61Symphonic 71HQ Pitch 81Dynamic Filter 92Reverb RadioFans.CN 收音机爱 好者资料库 103 DSP5D Scene No.EFFECT No.EFFECT TYPE 102Symphonic 112HQ Pitch 122Dynamic Filter 133Reverb 143Symphonic 153HQ Pitch 163Dynamic Filter 174Reverb 184Symphonic 194HQ Pitch 204Dyn
22、amic 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 rotating speed of the fans (2
23、 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 V) and No. 15 pin (GN
24、D) 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 CAUTION Inspection Connect the
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- Yamaha DSP Service Manual part 电路 原理图