Onkyo-TX8270-rec-sm 电路图 维修手册.pdf

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1、Service Manual Published by Onkyo it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. Improperly performed repairs can adversely

2、affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician. Ref.No. : 4642 Pre Issue (2017-Mar) Final Issue

3、(2017-Mar) TX-8270 NETWORK STEREO RECEIVER Title Page CONTENTS Title Page (This page) Note for Parts List Panel Reset Amp Diag Mode after Abnormal Conditions Model and Destination WiFi 5GHz Setting Firmware Check Idling current Hookup and Setting Trouble Shoot Disassembly Schematic Diagram Exploded

4、View Appendix (European models) RadioFans.CN 收音机爱 好者资料库 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 COMMON D 120V AC G 220230V H 220230240V J 100V AC M 220240V AC P 230V AC U 100240V AC V 110240V W 120V220240V Z 1 Speaker System (without AMP.) : 0 Passive Subwoofer F Front Speaker C Center Speaker R Rea

5、r Speaker B Back Speaker A Australia B United Kingdom C North American D USA F Taiwan J Japan K Korea L Russia P Europe Q Hong Kong R China S Brazil T Thai U Worldwide Speaker System (without AMP.) : L Left channel R Right channel 0 Center channel Voltage（電圧記号） Destination（仕向地記号） When parts list is

6、EXCEL file, please refer to the following explanation about file name. P L _ T X S R 3 4 3 ( B ) M J J . x l s x Model No. Color (X) Not related to color (B) Black (M) Wood (BR) Brown (O) Orange (C) Cherry (P) Pink (G) Gold (R) Red (GR) Green (S) Silver (H) Gray (V) Violet (K) Black (W) White (L) Bl

7、ue (Y) Yellow (LB) Light Blue Destination（仕向地記号） Look at the rear panel serial number 6 digit. J Voltage（電圧記号） Look at the rear panel serial number 5 digit. J Color（色記号） Note for Parts List File Name of Parts List File (EXCEL File) 1 There is a charge function and a power supply (adapter) is needed,

8、 but an adapter isnt bundled. （充電機能、電源（）要、付属） RadioFans.CN 收音机爱 好者资料库 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 TX-8270 Panel Front Panel Rear Panel Remote Control Unit Accessory Panel RC-903S Dimensions (W x H x D) : 17-1/8” x 5-7/8” x 12-15/16” (435 mm x 149.5 mm x 329 mm) Weight : 18.1 lbs/8.2 kg (

9、North American), 8.7 kg/19.2 lbs (Others) 1. Remote controller (RC-903S) (1) 2. Batteries (AAA/R03) (2) 3. Power cord (1) 4. FM indoor antenna (For North American models only) (1) 5. AM indoor antenna (For North American models only) (1) 6. DAB/FM antenna (For European models only) (1) (European mod

10、els) (European models) RadioFans.CN 收音机爱 好者资料库 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 TX-8270 / DTM-7 Reset 【STORE】 SETUP + ENTER x 2 【RESET】 1. Volume 40 2. MEMORY + ON/STANDBY RETURN x 2 3. Unplug the power cord from AVR after the disappeared All Clear of FL tube and AVR goes standby. 【RECALL】 SE

11、TUP + RETURN x 2 Reset Amp Diag Mode after Abnormal Conditions 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 TX-8270 Protect Mode The unit goes into standby automatically when detect the abnormal condition of thermal detection, dc voltage detection or current detection. (e.g. TX-NR555 block diagram below)

12、 BACLA-2398 BAAF-2388 BAETC-2390 BAPS-2399 BAPRC-2387 MPU Q7009 VOLTAGE DRIVE RELAY RL6501 (FL/FR) Power amp. (Front L) Q6001 Q6021 SPRLF THERMAL DETECT Q6800 POWER TRANS. T901 CURRENT DETECT Power Supply AC IN PON_MAIN PON_MAIN Relay RL9001 FUSE F9002 SEC-1 (HIGH) SEC-1 (LOW) FUSE F6901 F6902 RELAY

13、 RL6911 RL6912 Power Supply (H) (L) (H) or (L) SEC1H IPRO DC DETECT VPRO IPROTECT VPROTECT VOLTAGE DETECT VOLH VOLH THERMAL P6800A P9002 P8002 P2800B SUB TRANS. Power Supply for STANDBY VPRO: DC voltage detection IPRO: Current detection SPEAKER - OUT Amp Diag Mode after Abnormal Conditions 5 4 3 2 1

14、 6 D C A B D C A B 5 4 3 2 1 6 TX-8270 Self-diagnostics This function is for avoiding the rupture of electrolytic capacitors with amplifier circuit failure during power-ON. Operation of Self-diagnostic Self-diagnostic will start at the timing of next power on, after goes to the protect mode by Curre

15、nt detection or DC voltage detection. Only On/Standby key could work in this mode. Also remote control does not work. However, the CLEAR operation is enabled. During Self-diagnostic, the power supply for amplifier circuit become low voltage state(SEC1-LOW), and the speaker relay will be turned off.

16、Then, MPU will check each amplifier circuits Internally by entering the test signal (20 kHz,-20 dBFS sine wave) to each channel from DSP. MPU will judge the amplifier circuit is good or not from VOLH value. The normal range of VOLH value is 0.04 V VOLH 0.20 V. If VOLH value is in the out of this ran

17、ge, it will be judged as NG (No good). No problem found When protected by current detection, and no problem found, CHECK SP WIRE“ will be displayed. In this State, Only the On/Standby key is effective. And if do not anything for 3 minutes, unit goes into standby automatically. When protected by a DC

18、 voltage detection, and no problem found, unit goes into normal operation. Problem found When judged as there is a problem on any channel, the information of channel that has a problem will be displayed as in the right figure. In this State, Only the On/Standby key is effective. Also remote control

19、does not work. If do not anything for 3 minutes, unit goes into standby automatically. This state will keep also after unit turn on/off, or AC unplugged. the power supply for amplifier circuit become low voltage state(SEC1-LOW), and the speaker relay will be turned off. Display of during Self-diagno

20、stics A M P D i a g M o d e 2 Line FL tube type “Mode” This part display the channel which is currently checked. (E.g. FL, etc.) A M P D i a g M o d e 1 Line FL tube type Display of when problem found N G C H : L C R S L S R B L B R N G : L C R S L S R B L B R 2 Line FL tube type 1 Line FL tube type

21、 L C R S L S R B L B R Front L channel Center channel Front R channel Surround L channel Surround R channel Surround back R channel Surround back L channel Amp Diag Mode after Abnormal Conditions 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 TX-8270 Repair Process and How to Confirm Confirmation of the pr

22、otect cause While NG channel is displayed, You can confirm the protect cause by following the step below. 1. Press the Enter button 2. The protect cause are displayed for 5 seconds. Please check the around of those amplifier circuit and repair it. Clear of NG CH information After repair, you can cle

23、ar NG CH information by following the steps below. 1. Press the On/Standby key while pressing the Enter key. 2. Display as in the right figure appears. 3. Unit goes into Standby automatically after 5 seconds. Self-diagnostic will start again at the timing of next power on. By this, You can verify wh

24、ether repair was properly or not. If problem found after repair, please re-check the around of its circuit. Cancel of Self-diagnostic You can cancel this mode by clear operation (press Standby key while pressing CBL/SAT key). After cancel this mode, receiver will be started as normal operation. Manu

25、al Execution of Self-diagnostic 1. DIMMER + ON/STANDBY x 2 Main Firmware Version will appear on the main units display. 2. SETUP or HOME Service information will appear on the main units display 3. ENTER Display as in the right figure appears. 4. STANDBY/ON Unit will go into standby. 5. STANDBY/ON U

26、nit will turn on. Then self-diagnostic will start automatically. Protected by current detection Protected by DC Voltage detection D E T . P R O T E C T : I D E T . P R O T E C T : V N G C H C L E A R Clear of NG CH information A M P D I A G T E S T O N Manual Execution of Self-diagnostic 5 4 3 2 1 6

27、 D C A B D C A B 5 4 3 2 1 6 TX-8270 Model and Destination 1. TUNING UP + ON/STANDBY 2. DIMMER 3. Rotate BASS x5 Model Name Destination FL Display TX-8270 DC 8 2 7 0 D C 0 0 0 0 TX-8270 xx 8 2 7 0 x x 0 0 1 0 WiFi 5GHz Setting 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 TX-8270 / DTM-7 Wireless LAN 5GHz

28、 Setting IMPORTANT! Back Ground: It is totally different from Radio Law at the each country on 5GHz band. It means it is totally different from enabled Channel of 5GHz band at the each country. We define the “Country Code” for 5GHz band. You must set up the appropriate country code to the product. E

29、xample; Case1: When you use the “P” destination products and bring move to Russia or Israel, If you did not setup change country code and use in Russia and Israel, You will be on the illegal Radio Law in Russia and Israel. Case2; When you use “C” or “D” destination product bring move to Japan or Tai

30、wan, If you did not setup change country code and use in Japan and Taiwan, You will be on the illegal Radio Law in Japan and Taiwan. Service Parts information: The default country code is set on “Processing Circuit Board(PRC board)”. You must make sure and set up the “Country Code“ when you replace

31、the processing circuit pc board. Otherwise You and your customer should be on the illegal Radio Law and IT HAS POSSIBILITY TO HAVE A RISK OF PUNISHMENT FROM EACH COUNTRY GOVERNMENT. If you did not make sure country code and no setup code and face any trouble, We does not have any responsibility. For

32、 setting up the Country Code, Please ask the procedure of changing country code to your distributer or our sales. It is no described the procedure of changing Country Code on this Service Manual If you have any trouble of unclear procedure for update country code, Please contact our sales department

33、. PRC Board Default Value of Country Code The PRC board is already set default Country Code by the representative destination. To confirm the default country code, Please refer to the How to read PRC Board part number and Default value of Country Code section. Figure Country List (need to set up) Wi

34、Fi 5GHz Setting 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 TX-8270 / DTM-7 Wireless LAN 5GHz Setting IMPOTANT! Make sure and Setup Country Code You have to make sure country code for using or replacing “Processing Circuit PC Board”. It means that you have to make sure country code between using Process

35、ing Circuit PC board( PRC Board) and your customers country code. When it is not match PRC board default country code and customers country, you have to setup Country Code. Case3; When you repair the “P” destination products and replace “P” destination PRC Board and the customer live in UK, It is no

36、 necessary to setup Country Code Because “P” destination PRC board already setup “EU” country code. Match Country code NO NECESSARY TO SETUP COUNTRY CODE Case4; When you repair the “P” destination products and replace “P” destination PRC board and the customer live in Russia, It is necessary to setu

37、p Country Code Because “P” destination PRC Board already setup “EU” country code. However, the customers country code is “RU”. It means no match PRC Board code and Customers code. No Match Country code NECESSARY TO SETUP COUNTRY CODE Case5; When you repair the “C” destination products and replace “C

38、” destination PRC board and the customer live in US, it is no necessary to setup Country Code Because “C” destination PRC board already setup “US” country code. Match Country code NO NECESSARY TO SETUP COUNTRY CODE Case6; When you repair the “C” destination product and replace “C” destination PRC bo

39、ard and the customer live in Taiwan, It is necessary to setup Country Code. Because “C” destination PRC Board already setup “US” country code as default. However, the customers country code is “TW”. It means no match PRC Board code and the customers country code No Match Country code NECESSARY TO SE

40、TUP COUNTRY CODE Customer: UK: EU PRC Board: EU Customer: Russia: RU PRC Board: EU Customer: US: US PRC Board: US Customer: Taiwan: TW PRC Board: US WiFi 5GHz Setting 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 TX-8270 / DTM-7 Wireless LAN 5GHz Country Code 1/2 Region Country Code America USA US Canada

41、US Mexico US Brazil US Chile CL Guatemala US Puerto Rico US Trinidad TT Dominican Rep US Argentina AR Ecuador US Paraguay PY Colombia US Guam US Panama US Costa Rica US Uruguay UY Peru PE Region Country Code Asia / Oceania Japan JP China CN Hong Kong EU Korea KR Taiwan TW Singapore SG Malaysia MY Ph

42、ilippines EU Vietnam EU Indonesia ID Sri Lanka EU Australia AU New Zealand AU Thailand EU India IN Pakistan PK Region Country Code Middle East UAE EU Bahrain BH Kuwait KW Oman EU Qatar QA Lebanon EU Jordan JO Saudi Arabia EU WiFi 5GHz Setting 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 TX-8270 / DTM-7 W

43、ireless LAN 5GHz Country Code 2/2 Region Country Code Europe / Africa Germany EU UK EU France EU Netherlands EU Italy EU Switzerland EU Denmark EU Sweden EU Austria EU Belgium EU Spain EU Norway EU Finland EU Czech EU Israel IL Ukraine EU Hungary EU Slovakia EU Luxembourg EU Turkey EU Portugal EU Ma

44、lta EU Latvia EU Poland EU Region Country Code Europe / Africa Cyprus EU Estonia EU Slovenia EU Bulgaria EU Greece EU Romania EU Lithuania EU Serbia EU Croatia EU Ireland EU Macedonia EU Moldova EU Russia RU Andorra EU Armenia EU Azerbaijan EU Belarus EU Bosnia and Herzegovina EU Northern Cyprus(Tur

45、key) EU Georgia EU Iceland EU Kazakhstan EU Region Country Code Europe / Africa Liechtenstein EU Monaco EU Montenegro EU San Marino EU Vatican City EU Kosovo EU Kaliningrad(Russia) RU Gibraltar(UK) EU Canary Islands(Spain) EU Ceuta EU Melilla EU Morocco MA Algeria EU Tunisia TN Egypt EG Mauritius US

46、 South Africa EU WiFi 5GHz Setting 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 TX-8270 / DTM-7 How to read PRC Board part number and Default value of Country Code 1B5142387-1J270MDC Board No. 270 : TX-8270 TM7 : DTM-7 PRC Board Default setting Country Code Dst Code Main Country C US North America D US United State S US Brazil P EU Europe B EU United Kingdom Q EU Hong Kong T EU Thai L RU Russia A AU Australia / New Zealand R CN China F TW Taiwan K KR Kore