Onkyo-TXSR-507-Service-Manual(1) 电路图 维修手册.pdf
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1、TX-SR507 SERVICE MANUAL RC-737M AV Receiver MODEL TX-SR507(B/S/G) Ref. No. 4121 04, 2009 TX-SR507 Black, Silver and Golden models 120V AC, 60Hz 230V AC, 50Hz 220/230-240V AC, 50/60Hz B MDC, B MDD, S MDD, B MDF, G MDF B MPP, B MPB, S MPP, S MPB B MPA, S MPA B MMO, S MMO, B MMQ, G MMR SAFETY-RELATED C
2、OMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK ON THE SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE THESE COMPONENTS WITH ONKYO PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL. MAKE LEAKAGE-CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE T
3、HAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. RadioFans.CN 收音机爱 好者资料库 TX-SR507/SR577/DTR-20.1 DEBUG MODE-1 DSP DEBUG MODE-1/3 0A48K0N/0FFPo0 14256871039 The operations of DSP and DIR etc are able to be checked by the information di
4、splayed on FL with this debug mode. This information will help to analyse no sound trouble of digital audio. To set in Debug Mode and exit 1. Press and hold down DISPLAYDISPLAY button, then press ON/STANDBYON/STANDBY button while the unit is powered on. The version number of microprocessor will be d
5、isplayed. 2. Then press + + (TONE) button, the version number of DSP will be displayed. 3. Press DISPLAYDISPLAY button while the DSP version is displayed. The status of DSP and DIR etc will be displayed. 4. Press ON/STANDBY button to exit. Content of Display DIR Input Lock / Unlock E = UNLOCK = LOCK
6、 DIR Input RX 0 = None 1 = COAXIAL 1 2 = COAXIAL 2 3 = OPTICAL 1 4 = OPTICAL 2 5 = FRONT OPTICAL 8 = HDMI 1 9 = HDMI 2 DIR/ ADC Fix Mode D = Digital(SPDIF) A = Analog M = Analog Multich p = PCM Fixed d = DTS Fixed 1 2 Sampling Frequency, Emphasis 32K = 32 kHz without Emphasis 44K = 44.1 kHz without
7、Emphasis 48K = 48kHz without Emphasis 64K = 64 kHz 88K = 88.2 kHz 96K = 96 kHz 176 = 176.4 kHz 192 = 192 kHz 32e = 32 kHz with Emphasis 44e = 44.1 kHz with Emphasis 48e = 48 kHz with Emphasis DIR Detect Type 0 = Analog 1 = PCM 2 = Not PCM 3 = Data 4 = DTS CD (Not used) 5 = Multichannel 6 = Not Decid
8、ed CODEC Clock Mode N = Normal U = Up Sampling H = High Sampling (Double Rate) D = Down Sampling Q = Quad Rate 4 5 3 6 11 D:1.01/09227a67 FL Display Version of Main Microprocessor F/W *Number depends on the version. Version of DSP F/W *Number depends on the version. M:1.04/09323a RadioFans.CN 收音机爱 好
9、者资料库 DEBUG MODE-2 DSP DEBUG MODE-2/3 TX-SR507/SR577/DTR-20.1 DSP Port Status This figure is displayed in hexadecimal form. If this is transformed to binary form, each bit indicates the following DSP port status. Refeo to . 7 Mute output device This figure is displayed in hexadecimal form. If this is
10、 transformed to binary form, each bit indicates the IC which outputs error to microprocessor, which output Audio Mute. Refer to . 11 DSP Sequence 00 - FE = Not Free 2D = Mute control FF = Free 8 bit 0: Selector IC (Q5501) bit 1: Effector bit 2: DSP (Q201) bit 3: DIR (Q301) 0 = 0 0 0 0 1 = 0 0 0 1 2
11、= 0 0 1 0 4 = 0 1 0 0 8 = 1 0 0 0 HexadecimalBinary DSP Detect Format P = PCM (Analog) D = Dolby Digital d = DTS A = AAC S = DSD p = Dolby Digital+ T = TrueHD H = DTS-HD High Resolution M = DTS-HD Master Audio ? = Unknown Format DSP Decode o = Decode OK x = Decode NG 9 10 Transform bit 0 = NIC bit 1
12、 = DEC bit 2 = BUSY bit 3 = Exec Wait (Normal state) (Abnormal state) Troubleshoot by DSP DEBUG MODE 1. This debug mode will be useful in digital audio no sound or sound drop-out trouble. 2. Check information on FL display, then identify bad parts, and replace or resolder it. 3. Remdies Written belo
13、w are of typical case. So, more detailed check may need in actual cases. 4. Before replace ICs below, resolder the pins first to save resources. NOTE Function MPU (Main microprocessor) DSP DIR and DAC Flash ROM SDRAM Audio processor (Selector/ Volume) Content of Display (Continued) No input signal t
14、o DIR. No input signal to DIR. No input signal to DIR. E E is displayed Displayed sampling frequency is different from input signal. Displayed audio format is different from input signal. Digit No. on FL Symptom on FL DisplayCause of TroubleRemedy 1 4 9 1. Find out which digital input does not work.
15、 2. Confirm where the digital waveform stops between the digital input and DIR. 3. Resolder pins of the bad part or replace it with new one. The same as above. The same as above. Schematic Diagram PART-5 PART-13 PART-5 PART-13 PART-13 PART-3 Circuit No. Q701 Q201 Q301 Q282 Q281 Q5501 RadioFans.CN 收音
16、机爱 好者资料库 DEBUG MODE-3 DSP DEBUG MODE-3/3 TX-SR507/SR577/DTR-20.1 Troubleshoot by DSP DEBUG MODE (Continued) Interface between DSP and MPU is no good. Connection from DIR to DSP is no good. Interface between DSP and MPU is no good. DSP Sequence is no good. Communication between DSP and MPU is no good
17、. Writing from MPU to DSP is no good. DSP program does not run properly. Flash ROM or SDRAM is no good. The unit was powered off during DSP firmware updating. DSP program does not run properly. Flash ROM or SDRAM is no good. DSP program does not run properly. Or audio clock to DSP is no good. DSP se
18、tting is failured. Input signal to DSP is no good. a. No input signal to DSP. b. Interface between DSP and MPU is no good. The IC outputs error to MPU. Continue to display 1 1 Continue to display 2 2 Continue to display 3 3 to7 7 Continue to display 8 8 to F F Continue to display 0303 Continue to di
19、splay 0505 Continue to display 0909 to 0C0C Continue to display 1717 Display 2121, then return and signal format indicator is flashing. Continue to display 2222 to 2424, or 3030 to 3333. Continue to display 2626 to 2F2F Displayed audio encoding format is different from input signal. x x is displayed
20、. This identifies IC which outputs error to microprocessor. 7 10 9 11 The same remedy as 10 -b. The same remedy as 9 . The same remedy as 10 -b. Check 8 items. 1. The same remedy as 10 -b. 2. Check the voltage of the power supply pin of DSP. 3. Check the reset port and clock input of DSP by oscillos
21、cope, and find out bad part. 4. Flash ROM firmware is no good. Update. 5. DSP or MPU is broken. Replace MPU. DSP is impossible to replace, so replace with a new PC board. 1. Flash ROM firmware is no good, update. 2. Check DSPSDO pin of MPU by oscilloscope. If no signal, find out bad part connected.
22、3. Flash ROM or SDRAM is no good, replace. 4. DSP or MPU is broken, replace it by the same method as above 5. 1. Flash ROM firmware is no good, update. 2. Flash ROM or SDRAM is broken, replace. Initialize the unit. (Press ON/STANDBY button while pushing VCR/DVR button when the unit is powered on.) 1
23、. Flash ROM firmware is no good, upgrade. 2. Flash ROM or SDRAM is broken, replace. 1. Flash ROM program is no good, upgrade. 2. Flash ROM or SDRAM is broken, replace. 3. Check DSP drive clock freq. by oscilloscope. If no signal, find out bad part connected. 4. Check audio clock to DSP by oscillosco
24、pe. If no signal, find out bad part connected. 1. Flash ROM firmware is no good, upgrade. 2. Flash ROM or SDRAM is broken, replace. 1. Confirm where the digital waveform stops between DIR and DSP by oscilloscope. 2. P8001, P8002 may relate. 3. Resolder pins of the bad part or replace it with new one
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