Onkyo-HTR280-avr-sm维修电路原理图.pdf
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1、HT-R280 SERVICE MANUAL AV RECEIVER MODEL HT-R280(B) Ref. No. 4212 072010 SAFETY-RELATED COMPONENT 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 APPEA
2、R AS SHOWN IN THIS MANUAL. MAKE LEAKAGE-CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. RC-762M HT-R280(B) in HTiB “AVX-280(B)” : 120V, 60Hz, Canadian model Black model RadioFans.CN 收音
3、机爱 好者资料库 TX-SR308/ /508/ 578/ 608 HT-R280/ 380/ 538/ 580/ 680/ 980/ C230/ C260 DTR-20.2/ 30.2 TROUBLE SHOOT-1 No Power TX-SR308/ /508/ 578/ 608 HT-R280/ 380/ 538/ 580/ 680/ 980/ C230/ C260 DTR-20.2/ 30.2 No Power YES NO YES YESNO NO YES BAETC-0376/0390 (Power supply) BADG-0364 (MPU Board) JL901 4pin
4、 +12V 2pin +10V BAETC-0376/0390 (Power supply) Replace Power Supply Board orRepair Sub Transformer T902 and itsperipheral circuit. BAETC-0376/0390 (Power supply) BADG-0364 (MPU Board) After Power on, Voltage atJL901_1pin is changed from +12V t o 0V? BADG-0364 (MPU Board) Replace Q701 and also repair
5、its peripheral circuit. BAETC-0376/0390 (Power Supply) F901 is blown out? BAAF-0355(AF Board) BADG-0346 (MPU Board) After Power on, Voltage at P2001 22/21pin +5V 17/18pin +12V BAETC-0359/0352/0345/ (trans teminal Board) BAVD-0375/0389 (Video board) This is just for general reference and does not inc
6、luding every single case. Replacing F901 will not improve the unit. After replacing F901 on BAETC-0376/0390(Power supply) either of F901 on Power supply Board or F6901/F6902 on BAAF-0341(AF Board) blows out? Replace “AF Board”. or “D6901 (Power supply diode)” “Power AMP(Final_TR and A_Class AMP) ” a
7、nd also repair their peripheral circuit. After Power on, Voltage at JL952 AC10V Replace Power Transformer or Repair its peripheral circuit. Replace Video Board or Repair D901/Q9023/Q9031 and their peripheral circuit. YES YES NO NO NO RadioFans.CN 收音机爱 好者资料库 TX-SR308/ /508/ 578/ 608 HT-R280/ 380/ 538
8、/ 580/ 680/ 980/ C230/ C260 DTR-20.2/ 30.2 TROUBLE SHOOT- 2 No Display A 1 2 3 4 5 BCDEFGH FLD_CLKFLD_SDD(DATA) FLD_CS V:1V/cm H:02Msec/cm V:1V/cm H:10sec/cm V:1V/cm H:1sec/cm No Display YES YES NONO NO NO YES YES NO YES Timing of Serial Communication This is just for general reference and does not
9、include every single case. The above waveforms are got by Oscilloscope of Maximum Horizontal Sensitivity: 100MHz. The results depend on the oscilloscope. Fluorescent Display Tube is not working? Replace Fluorescent Display Tube or BADIS-0373/0387(Display Board). BAPS-0342/0349/0356(-VP Board) JL953
10、between 2pin-4pin: AC3.3V BAPS-0342/0349/0356 (-VP Board) JL951 1pin-2pin AC3.3V BAPS-0342/0349/0356 (-VP Board) R950(8.2 ) is disconnected? BAPS-0342/0349/0356 (-VP Board) Replace R950 (8.2 ) or -VP Board Replace Power transformeror Repair its peripheral circuit. BAPS-0342/0349/0356 (-VP Board) Rep
11、lace -VP Board or Check for signal line damage etc. and fix any damages. BAPS-0342/0349/0356 (-VP Board) JL953 3pin -33V 1pin and 5pin +3.3V BAPS-0342/0349/0356(-VP Board) JL951 3pin-4pin AC40V BAPS-0342/0349/0356 (-VP Board) Replace -VP Board or Repair Q960/D960/D962/R961 and their peripheral circu
12、it. BADIS-0373/ 0387 (Display Board) P701 26pin FLD_SDD 27pin FLD_CLK 28pin FLD_CS Transmission of each of the signals is correct? BADG-0413(MPU Board) Replace or Repair Q701 and their peripheral circuit. MPU Board. Replace Display Board or repair Q7003 and their peripheral circuit. 1 byte data addr
13、ess data 1 byte data data to be YES BADIS-0373/ 0387 (Display Board) NO NO YES TX-SR308 HT-280/ 380/ 538/ C230TX-SR308 HT-R280/ 380/ 538/ C230 TROUBLE SHOOT-3 No Sound A 1 2 3 4 5 BCDEFGH 6 7 8 IJK Y NNN Y YYNN NY Y N N N NN Y Y Y Y N N YY N Y N NNN Y NN YY N Y Y Y DIR_FLRDIR_LRCKDIR_BCKDIR_MCK DSP_
14、FLR/SLR/CSWCX_LRCKCX_SCLKHDMI_MCK HDMI_FLRHDMI_LRCKHDMI_BCK V:1V/cm H:0.1/cmV:1V/cm H:5/cmV:1V /cm H:0.1v/cmV:1V/cm H:0.1v/cm HDMI_SPDIF V:1V/cm H:0.1/cm BAAF-0341(AF Board) AUDIO-SEL_OUT SR-J4083 FR-J4081 C-J4093 FL-J4095 SL-J4175 SW-J4082 refer to a figure (AMP_OUT) SR-R6064 FR-R6061 C-R6062 FL-R6
15、060 SL-R6063 SW-R6067 R6302 or 6322 +22V refer to a figure BCAF-0341 (AF Board) P6901(+49V) P6902(-49V) BAAF-0341(AF Board) Q4170 3pin +15V Q4171 3pin -15V D4172 anode +7V D4171 cathode -7V BAHDM-0403(HDMI Board) DIR_OUT P8001 3pin DIR_BCK 5pin DIR_LRCK 7pin DIR_FLR P8002 23pin DIR_MCK BADG-0364 (MP
16、U Board) DSP_OUT P8002 24pin DSP_FL/R P8001 8pin DSP_SL/R , 10pin DSP_CSW , 4pin CX_SCLK . 6pin CX_LRCLK BADG-0364(MPU Board) BADG-0364(MPU Board) DAC_OUT BADG-0401(HDMI Board) JL801 2pin and 4pin +12V BAETC-0359(torans terminal) JL952 1-3pin AC10V BADG-0364(MPU Board) P2001 21 22pin +5V BADG-0364(M
17、PU Board) P2001 21 22pin +5V BAETC-0352(torans terminal) JL952 1-3pin AC10V BAVD-0375(Video Board) BAHDM-0401(HDMI Board) P8001 16pin HDMI_SPDIF . 15pin HDMI_MCK 13pin HDMI_BCK 11pin HDMI_LRCK 9pin HDMI_FLR BAHDM-0401 (HDMI Board) JL801 1&4pin +12V BAETC-0352(torans terminal) JL952 1-3pin AC10V Note
18、: This is just for general reference and does not include every single case. The above waveforms are got by Oscilloscope of Maximum Horizontal Sensitivity: 100MHz. The results depend on the oscilloscope. No Sound from HDMI input Waveforms are no problem? BAVD-0375(Video) Replace Video Board or Repai
19、r Repair D9011/R9013/R9012 and their peripheral circuit. Replace Power transformer or Repair its peripheral circuit. BAHDM-0401(HDMI Board) Make sure that JL801 3pin is 12V Replace HDMI Board or Replace Q8101(HDMI_4RX) or Repair its peripheral circuit. No Sound from COASXL/OPT input Waveforms are no
20、 problem? Waveforms are no problem? Analog signal outputs from 4-9 pins of P5502? 4pin-FR 5pin-FL 6pin-SW 7pin-C 8pin-SR 9pin-SL Replace MPU Board or Replace U131/132 Q301 Q131 or Repair their peripheralcircuit. Replace Video Board or Repair Q9031/D9011/R9013/R9012 and their peripheral circuit. BAVD
21、-0382/0389(Video Board) Replace Video Board or Repair D9011/9013/R9012 and their peripheral circuit. BAHDM-0401(HDMI Board) Make sure that JL801 2pin & 4pin is 12V. Replace HDMI Board or Replace Q201(DSP-IC) or Repair its peripheral circuit. BAETC-0352(torans terminal) JL952 1-3pin AC10V BADG-0364(M
22、PU Board) Replace MPU Board or Replace Q302 or Repair its peripheral circuit. Replace Power transformer or Repair its peripheral circuit. BAVD-0382/0389(Video Board) Replace Video Board or Repair Q9031/D9011/R9013/R9012 and their peripheral circuit. No Sound from ANALOG input Signal output is no pro
23、blem? Signal output is no problem? BCAF-0341(AF Board) Replace AF Board or Repair R4160/4166 D4300/4301/4302/4303 and their peripheral circuit. BADG-0364(MPU Board) P5503 3pin (SEC1H) Voltage changes from 0V to 3V about 2 or 3 seconds after power-on? P5504 2pin, 4pin, 5pin Voltage changes from 0V to
24、 3V about 3 or 4 seconds after power-on? BADG-0364(MPU Board) P5503 6pin(I-pro):0V 5pin(V- pro):0V JL501 3pin(THE): +1V or lower 8pin(V-olh):0V Replace AF Board or Repair Q6053/6055/6052/6051 R6057, and their peripheral circuit. BADG-0364(MPU Board) Replace MPU Board or Replace Q701 and repair its p
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