Onkyo-TXNR646-avr-sm 电路图 维修手册.pdf

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1、Service Manual 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 APPEAR AS SHOWN IN THIS MANUAL. MAKE LEAKAGE-CURRENT OR RESIS

2、TANCE MESUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. Published by Onkyo & Pioneer Corporation Grobal CS Department TX-NR646 AV RECIEVER Ref.No. : Pre Issue (15-May) Final Issue (15-Jun) CONTENTS Front Cover

3、 (This page) Note for Parts List Panel Reset Amp Diag Mode after Abnormal Conditions Model and Destination Firmware Adjustment ( Unnecessary ) Hookup and Setting Trouble Shoot Disassembly Schematic Diagram Exploded View Appendix 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 Note fo

4、r Parts List COMMON When parts list is EXCEL file, please refer to the following explanation about file name. Destination Look at the rear panel serial number 6 digit. J Model No. Color Voltage Look at the rear panel serial number 5 digit. J Voltage J 100V AC D 120V AC M 220-240V AC P 230V AC U 100-

5、240V AC Speaker System (without AMP.) : 0 Passive Subwoofer F Front Speaker C Center Speaker R Rear Speaker B Back Speaker Color (B) Black (BR) Brown (C) Cherry (G) Gold (GR) Green (H) Gray (K) Black (L) Blue (LB) Light Blue (M) Wood (O) Orange (P) Pink (R) Red (S) Silver (V) Violet (W) White (Y) Ye

6、llow Destination J Japan C North American D USA F Taiwan S Brazil Q Hong Kong R China A Australia B United Kingdom K Korea L Russia P Europe U Worldwide Speaker System (without AMP.) : L Left channel R Right channel 0 Center channel File Name of Parts List File (EXCEL File) PL_TX-SR343(B)MJJ.xlsx Ra

7、dioFans.CN 收音机爱 好者资料库 Panel 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 Front Panel Rear Panel Remote Control Unit Accessory Front Panel / Rear Panel / Remote Control Unit RC-898M Weight : 9.4 kg (20.7 lbs.) (North American and Taiwanese), 9.8 kg (21.6 lbs.) (Others) Dimensions (W H D) : 435 mm 173.5 mm

8、 329 mm, 17-1/8 6-13/16 12-15/16 Indoor FM antenna - (1) AM loop antenna - (1) Remote controller (RC-898M) - (1) Batteries (AA/R6) - (2) Power cord (Taiwanese models) - (1) Speaker setup microphone - (1) The number in parenthesis indicates the quantity. On packaging, the letter at the end of the pro

9、duct name indicates the color. TX-NR646 RadioFans.CN 收音机爱 好者资料库 Reset 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 COMMON How to reset: Step1 While holding down CBL/SAT on the main unit (note that step 2 must be performed with this button pressed down) Step2 Press ON/STANDBY on the main unit. (Clear appe

10、ars on the display and the unit returns to standby.) Do not unplug the power cord until Clear disappears from the display. How to reset the remote controller: Step1 While holding down RECEIVER on the remote controller, press Q until the remote indicator stays lit (about 3 seconds). Step2 Within 30 s

11、econds, press RECEIVER again. 方法 : 1. 本体CBL/SAT押（必押状態2.操作行） 2. 本体ON/STANDBY押（表示部Clear表示状態 戻） 表示部Clear消、絶対電源抜。 方法 : 1. RECEIVER押、点灯Q 3秒以上押 2. 30秒以内RECEIVER一度押 How to Reset the Unit 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 COMMON Protect Mode The unit goes into s

12、tandby automatically when detect the abnormal condition of thermal detection, dc voltage detection or current detection. (e.g. TX-SR343 block diagram below) BACLA-1734 BAAF-1712 BAETC-1713 BAPS-1737 BAPRC-1758 MPU Q7009 VOLTAGE DRIVE SPEAKER - OUT RELAY RL6600 (FL/FR) Power amp. (Front L) Q6050 Q606

13、0 P6080 SPRLF THERMAL DETECT Q6300 POWER TRANS. T901 CURRENT DETECT Power Supply AC IN M POWER M POWER Relay RL9001 FUSE F9001 SEC-1 (HIGH) SEC-1 (LOW) FUSE F6401 F6402 RELAY RL6430 RL6440 Power Supply (H) (L) (H) or (L) SEC1H IPRO DC DETECT VPRO IPROTECT VPROTECT VOLTAGE DETECT VOLH VOLH THERMAL P5

14、01 P9002 P8002 P9011 SUB TRANS. Power Supply for STANDBY VPRO : DC voltage detection IPRO : Current detection 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 COMMON Self-diagnostics This function is for avoiding the rupture of electrolytic capacitors with amplifier ci

15、rcuit 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 Current detection or DC voltage detection. Only On/Standby key could work in this mode. Also remote control does not work. However, the CLEAR opera

16、tion 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. 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

17、will judge the amplifier circuit is good or not from VOLH value. The normal range of VOLH value is 0.04 V VOLH ALL_D” will be displayed. 6. Select “USB - ALL_D” by PRESET(left/right) cursors and TUNING(up/down) cursors, then press ENTER button, updating will begin. 7. Wait until update is completed.

18、 When the update ends, “Completed!” is displayed. (If you leave it, it automatically turns standby mode. ) 8. Press ON/STANDBY button, and the unit turns on. 9. Check the new FW version number. If the procedure might not be successful, please select “USB - ALL_M”. Hookup and Setting 5 4 3 2 1 6 D C

19、A B D C A B 5 4 3 2 1 6 No Sound No sound from connected player Chose input selector which is assigned to connected input terminal ? Isnt muting on ? No sound from connected TV Chose wrong input selector ? Connect to this models HDMI OUT terminal from TV by HDMI cable ? When TV supports ARC function

20、, connect to his models HDMI OUT terminal from TVs HDMI input terminal for ARC function ? When TV doesnt support ARC function, connect TV to this model with optical cable etc. ? Isnt muting on ? No sound from some connected loudspeaker(s) No sound loudspeaker(s) config is enabled ? No sound from all

21、 connected TV or Blu-ray player etc. After chose loudspeaker volume level setting, test tone is OK ? No problem about above items Unplug power cord After 10 seconds, connect power cord again Reset this model COMMON Hookup and Setting 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 No Picture In general Conn

22、ection cable is bent , twisted or damaged ? Input is switched on TV ? No picture from connected player by HDMI input terminal Chose input selector which is connected to player ? Listening mode is not Pure Audio ? Dont use HDMI-DVI adaptor. From personal computer ? No picture from connected player by

23、 component video terminal Output to TV connected to component video out terminal from players picture connected to the composite video input terminals ? No problem about above items Unplug power cord After 10 seconds, connect power cord again Reset this model COMMON Hookup and Setting 5 4 3 2 1 6 D

24、C A B D C A B 5 4 3 2 1 6 No Power In general Doesnt be connection cable bent, be it twisted and be it damaged? There is time when indication on the front panel doesnt just light up. Please check the connecting cord of a DISPLAY PCB. No problem about above items Unplug power cord After 10 seconds, c

25、onnect power cord again Reset this model COMMON TX-NR545/646/747 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 Trouble Shoot Each voltage is shown as the reference value. 各電圧実測標準値 Here the trouble shoot which focuses on the hardware troubles regarding PCB assembly is explained. Of course, with actual repa

26、ir there are also troubles due to damaged Power Transformer, Wiring, soldering etc. in addition to PCB assembly. 故障基板特定。 見故障基板原因、電源接続 線結線付不具合考 Process Check Point Damaged PCB 1 J6718 (BAAF-1720) : +23V BAAF-1720 2 P7003B (BADG-1742) No.1 pin : +15V No.3 pin : -15V BAAF-1720 3 P801B (BAPRC-1760) No.5

27、 pin : +15V BATRM-1754 4 P8003A (BADG-1742) No.20 pin : +3.3V BAPRC-1760 5 P8003A (BADG-1742) No.5 pin : Check signal No.7 pin : Check signal BAPRC-1760 6 Q1501 (BADG-1742) No.7 pin : Check signal BADG-1742 7 J6615 (BAAF-1720) : Check signal BAAF-1720 8 Q6050,Q6060 (BAAF-1720) Base : Check signal Ba

28、se : Check signal BACLA-1746 9 P801B (BAPRC-1760) No.3 pin : +3V BAAF-1720 10 P6080 (BAAF-1720) : Check signal BAAF-1720 11 BATRM-1754 No Sound (HDMI in) No Good OK No Good OK No Good OK No Good OK No Good OK No Good OK No Good OK No Good OK No Good OK No Good OK BAPRC-1760 BADG-1742 BACLA-1746 BATR

29、M-1754 BAAF-1720 TX-NR545/646/747 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 Trouble Shoot Each voltage is shown as the reference value. 各電圧実測標準値 Here the trouble shoot which focuses on the hardware troubles regarding PCB assembly is explained. Of course, with actual repair there are also troubles due

30、to damaged Power Transformer, Wiring, soldering etc. in addition to PCB assembly. 故障基板特定。 見故障基板原因、電源接続 線結線付不具合考 Process Check Point Damaged PCB 1 J6718 (BAAF-1720) : +23V BAAF-1720 2 P7003B (BADG-1742) No.1 pin : +15V No.3 pin : -15V BAAF-1720 3 P801B (BAPRC-1760) No.5 pin : +15V BATRM-1754 4 P8003A

31、 (BADG-1742) No.20 pin : +3.3V BAPRC-1760 5 P8003A (BADG-1742) No.15 pin : Check signal BADG-1742 6 P8003A (BADG-1742) No.5 pin : Check signal No.7 pin : Check signal BAPRC-1760 7 Q1501 (BADG-1742) No.7 pin : Check signal BADG-1742 8 J6615 (BAAF-1720) : Check signal BAAF-1720 9 Q6050,Q6060 (BAAF-172

32、0) Base : Check signal Base : Check signal BACLA-1746 10 P801B (BAPRC-1760) No.3 pin : +3V BAAF-1720 11 P6080 (BAAF-1720) : Check signal BAAF-1720 12 BATRM-1754 No Good OK No Sound (Opt in) No Good OK No Good OK No Good OK No Good OK No Good OK No Good OK No Good OK No Good OK No Good OK No Good OK

33、BAPRC-1760 BADG-1742 BACLA-1746 BATRM-1754 BAAF-1720 TX-NR545/646/747 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 Trouble Shoot Each voltage is shown as the reference value. 各電圧実測標準値 Here the trouble shoot which focuses on the hardware troubles regarding PCB assembly is explained. Of course, with actual

34、 repair there are also troubles due to damaged Power Transformer, Wiring, soldering etc. in addition to PCB assembly. 故障基板特定。 見故障基板原因、電源接続 線結線付不具合考 No Sound (Analog in) Process Check Point Damaged PCB 1 J6718 (BAAF-1720) : +23V BAAF-1720 2 P7003B (BADG-1742) No.1 pin : +15V No.3 pin : -15V BAAF-1720

35、 3 J6615 (BAAF-1720) : Check signal BAAF-1720 4 Q6050,Q6060 (BAAF-1720) Base : Check signal Base : Check signal BACLA-1746 5 P801B (BAPRC-1760) No.3 pin : +3V BAAF-1720 6 P6080 (BAAF-1720) : Check signal BAAF-1720 7 BATRM-1754 No Good OK No Good OK No Good OK No Good OK No Good OK No Good OK BAPRC-1

36、760 BADG-1742 BACLA-1746 BATRM-1754 BAAF-1720 TX-NR545/646/747 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 Trouble Shoot Each voltage is shown as the reference value. 各電圧実測標準値 Here the trouble shoot which focuses on the hardware troubles regarding PCB assembly is explained. Of course, with actual repair

37、 there are also troubles due to damaged Power Transformer, Wiring, soldering etc. in addition to PCB assembly. 故障基板特定。 見故障基板原因、電源接続 線結線付不具合考 No Picture (HDMI in/ out) Process Check Point Damaged PCB 1 P801B (BAPRC-1760) No.5 pin : +15V BATRM-1754 2 BAPRC-1760 No Good OK BAPRC-1760 BATRM-1754 TX-NR54

38、5/646/747 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 Trouble Shoot Each voltage is shown as the reference value. 各電圧実測標準値 Here the trouble shoot which focuses on the hardware troubles regarding PCB assembly is explained. Of course, with actual repair there are also troubles due to damaged Power Transfo

39、rmer, Wiring, soldering etc. in addition to PCB assembly. 故障基板特定。 見故障基板原因、電源接続 線結線付不具合考 No Picture (Component in/ HDMI out) Process Check Point Damaged PCB 1 P801B (BAPRC-1760) No.5 pin : +15V BATRM-1754 2 P2800B (BAPRC-1760) No.9 pin : +5V BAPRC-1760 3 P2800B (BAPRC-1760) No.3 pin : Check signal No

40、.5 pin : Check signal No.7 pin : Check signal BATRM-1754 4 BAPRC-1760 No Good OK No Good OK No Good OK BAPRC-1760 BATRM-1754 TX-NR545/646/747 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 Trouble Shoot Each voltage is shown as the reference value. 各電圧実測標準値 Here the trouble shoot which focuses on the hardw

41、are troubles regarding PCB assembly is explained. Of course, with actual repair there are also troubles due to damaged Power Transformer, Wiring, soldering etc. in addition to PCB assembly. 故障基板特定。 見故障基板原因、電源接続 線結線付不具合考 No Picture (Composite in/ HDMI out) Process Check Point Damaged PCB 1 P801B (BAP

42、RC-1760) No.5 pin : +15V BATRM-1754 2 P2800B (BAPRC-1760) No.9 pin : +5V BAPRC-1760 3 P2800B (BAPRC-1760) No.7 pin : Check signal BATRM-1754 4 BAPRC-1760 No Good OK No Good OK No Good OK BAPRC-1760 BATRM-1754 TX-NR545/646/747 5 4 3 2 1 6 D C A B D C A B 5 4 3 2 1 6 Trouble Shoot Each voltage is show

43、n as the reference value. 各電圧実測標準値 Here the trouble shoot which focuses on the hardware troubles regarding PCB assembly is explained. Of course, with actual repair there are also troubles due to damaged Power Transformer, Wiring, soldering etc. in addition to PCB assembly. 故障基板特定。 見故障基板原因、電源接続 線結線付不

44、具合考 BAPRC-1760 BACLA-1746 BATRM-1754 BAAF-1720 BAPS-1743 BADIS-1740 P7001 No Power Process Check Point Damaged PCB 1 C9001 (BAPS-1743) : AC100240V BAPS-1743 2 F9002 (BAPS-1743) BAAF-1720 and BACLA-1746 3 F6401, F6402 (BAAF-1720) BAAF-1720 and BACLA-1746 4 ANY PARTS (BAAF-1720) BAAF-1720 and BACLA-17

45、46 5 P7001(FFC) (BAPRC-1760) P7001(FFC) 6 P9011B (BAPRC-1760) No.4 pin : +12V (StandBy) +15V (PowerOn) BAPS-1743 7 P9011B (BAPRC-1760) No.1 pin : +3V BAPRC-1760 8 P701A (BAPRC-1760) No.1 pin : +5V BAPRC-1760 9 RL9001 (BAPS-1743) BAPS-1743 10 P9002 (BAPS-1743) : AC100240V BATRM-1754 11 P7001(FFC) (BA

46、DIS-1740) P7001(FFC) 12 BADIS-1740 No Good OK No Good OK No Good OK No Good OK No Good OK No Good OK No Good OK No Good OK No Good OK No Good OK 1. When being not turned on with remote control unit only, BADIS-1740(TX)/ BADIS-1747(DTR) is abnormal. 2. When being not turned on with button on the main unit only, BADIS-1740(TX)/ BADIS-1747(DTR) is abnormal. No Good OK ANY PARTS on BAAF-1720 / BACLA-1740 Check damage parts Normal(OK) or Damage (No good) Check the damage in the red framework part as shown with visual inspe