Onkyo-DTR4.6-avc-tt维修电路原理图.pdf

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1、 Please Print All pages and give to Service TECH. It will save time repair unit List of info ( If you have problem to find parts number in service manual ! and parts Availability Go to service Web under service Ducumrnts on the unit . click open General information than click open Onkyo Parts Look-u

2、p method ) Thermal Sensor Problem Unit shut down in 3 sec,5 min, 10min.(check page 6, 13 and 14) 1.(2,3) Input work Digital lit on display, No audio output to speakers. (Tips can be use for all Unit) 2.(page 4,5) Switch intermittant. Standby light is ON but set will not power ON ( DVD or Receive) 3.

3、(page 6 )GENERAL CHECK LIST FOR INTERMITTANT operation or NO AUDIO ,VIDEO 4. (Page 7 to Page 10 ) MONITOR OUT NOT WORKING (TXSR603X) 5. (Page 11 to page 12) Relay constantly clicks, wont power ON Only sound TiTa TiTa 6.(13,14)General troubleshooting for Protect problem. (Unit may turn off in 1 sec,3

4、 sec 5 min,10 min,15 min.) 7. ( Page 15 to Page 17) Basic DSP circuit 8. (page 18 to page 21 ) Subject: Troubleshooting tips for the Microprocessor and Audio Select IC 9. (page 22 to page 25 ) Sample : DIGITAL AUDIO WAVE FORM SECTION 10. (page 26 ) Subject: Unit Displays “Auto Speaker Setup” and loc

5、ks up. 11.(page 27 to 34)Service on audio input and DSP board Sample (TXSR504, HTR 540) remove screws at back pannel side and sub power board. front break. Remove bottom chassis set unit as picture you can test and check replace parts.on amp board. RadioFans.CN 收音机爱 好者资料库 _ CONFIDENTIALITY NOTICE: T

6、his document and the information it contains is intended for the exclusive use of Authorized ONKYO Service Centers and their employees. This document may contain information that is privileged, confidential and exempt from disclosure under applicable law and terms of the ONKYO Service Agreement. Any

7、 dissemination, distribution or copying of this document and the information it contains is strictly prohibited. CONFIDENTIAL TIPS & TRICKS 18 Park Way, Upper Saddle River, NJ 07458 No. 20070724 Date: July 24, 2007 _ Model: DTR-4.6 (for ALL unit service info ) Subject: Input work Digital lit on disp

8、lay, No audio output to speakers. Symptom: Use DVD RCA audio input, no audio signal at Pin 4,5,6,7 at P3101B. (Check with Scope should have 2.5 V DC with 0.2 V pp audio * USE SCOPE TO CHECK * Missing Output from pin 8 to pin 15 on P3101B digital out Should be 0 V dc with 0.4 V pp) o v 0.4 v pp Solut

9、ion: First check microprocessor Q701 control signal output. (5 V. ) 5 V R267, R268 VOLSTB and VOLCLK should have 5 V dc with 0 V 5 V pulse down to 0 V when adjust volume control. ( also at P3105B) R659 VOLDAT should have 0 V dc with 5 V pulse when adj volume.If low Remove pin 58,59,60 On Q3003 if pu

10、lse was low. To check control signal back Up to 5 V. If control signal still low Q701 may be def. If yes have 5 V pulse Q3003 was leaking Replace new IC. Next check +7 V and 7 V power supply on Q3003 and Q3009. Remove XM Radio NARF-9688 and VIDEO Board NAVD-8657 . Check R3127 right side Reg Q3005 ou

11、t pin 1 should be + 7 V. If low or +2.5 V Q3003 or Q3009 may be leaking. Remove pin 19 or VCC pin 39 on Q3009 and Check. Same as Q3006 out pin 3 ,Right side R3128 should be 7 V. if low Replace def. Q3003 or Q3009. If control signal is good CD audio signal go in to Q 3003, +7 v And 7 V all good but n

12、o ADRT-,ADRT+ , ADLT- and ADLT+ audio out Replace Q3003 input select IC. 0.2 V pp Check next page ! RadioFans.CN 收音机爱 好者资料库 _ CONFIDENTIALITY NOTICE: This document and the information it contains is intended for the exclusive use of Authorized ONKYO Service Centers and their employees. This document

13、 may contain information that is privileged, confidential and exempt from disclosure under applicable law and terms of the ONKYO Service Agreement. Any dissemination, distribution or copying of this document and the information it contains is strictly prohibited. CONFIDENTIAL PLEASE Print ALL Page I

14、t will save Tech time Fix unit. Technical Tip 18 Park Way, Upper Saddle River, NJ 07458 Date: September 12, 2005 _Switch Problem May find in any DVD ? Receiver too !_ Model: DV-CP701/CP702 ( Info May use on other DVD ) Subject: Standby is light is ON but set will not power ON (power on Tray move its

15、elf) Symptom: The Standby light is ON but the set will not power ON when the Standby button is pressed. (some unit power on or play disc T ray will open close itself) (Check Voltage with Scope int leaking switch May not show on ohm test ) Solution: Check and verify the power supply voltages at conne

16、ctor CN2. Check the Reset circuit to confirm that it is operating normally and crystal OSC (X801) to verify that it is on frequency and supplying 2.5V to 5V pk to pk. If these items are normal check the voltages on the DISPLAY board at KEY0, KEY1, KEY2 and KEY3. The voltage at KEY0 through KEY3 shou

17、ld read 4.9V 5VDC. If any of the KEY voltages read low check the associated momentary KEY switch to see if it is stuck in a closed position. If the switches check good, check the DISPLAY board capacitors C827, C828, and C829, to see if any are shorted or leaky. Replace any defective parts and re-tes

18、t. If Switch is leaking replace the Bad switch. ( 25035718 ) NPS-111-S6 81 go to nex t page. Voltage reading at CN2 Pin # & Desc. Standby Unit with power ON Remove CN2 cable 10 EV +12V +12 V +12V 12 V 1 P-con - - 1.5 V 11 GND - - - 7 SW +8V 0 +8V 3.3 V 8 SW +8V 0 +8V 0 V 9 GND - - 0 V 4 SW+5V 0 +5V

19、4.4 V 2 EV+5V +5V +5V 5.22 V 6 SW+3.3V 0 +3.3V 3.42 V 3 GND - - - 5 GND - - - 12 EV-12 -12V -12V -12 V 13 EV+30V -29V -30V -28 V 14 FLAC -22V -22V -21 V 15 FLAC -22V -24.5V -21 V When Power board was good Standby Lit Unit can not turn on power. Use scope check Display board U3 P804A When K0,K1 or K2

20、 Voltage much lower than 5 V. Microprocessor lock up Unit will have no function. If K0,K1 or K2 line Lower than 5 V. First check all switch not lock in. Remove U8 and U9 PCB from U3 Display board . If K0,K1 and K3 Voltage low than 5V.(2V to 4V) Replace display board.U3 NADIS-7808. When you have 5 V

21、after U8,U9 removed check any K0,K1 or K3 line Voltage lower than 5 V when you connect U9 orU8 (U7) board back to U3. Replace that board. Or check out Def. Push switch and replace. 25035718 NPS-111-S681 If SW was leaking P804B Good Unit Bad Unit no power on TRAY in and out Standby Lit power on Stand

22、by lit only When playDisc USE Scope to check 702 701 Y ellow KEY 0 + 5 V + 5 V + 5 V + 4 V + 5 V Blue 0 V 0 V 0 V 0 V 0 V Blue E of f Q906 0 V 4 .3 0 . 5 V 0V or 2.8V +2. 8 V Blue 0 V + 5 V 0 V 0 V 0 V Blue KE Y 1 + 5 V + 5 V + 5 V + 5V Int. + 5 V to 4V back 5 V & 4V ( Show on Scope Change Voltage )

23、 P805B U9 Standby SW PC KE Y 2 + 5 V + 5V + 4V or lower remove one side solder on switch one by one and check that line scope show lower than 5 v. when the voltage will back to 5 v DC. the switch was bad change this switch . test play and check again. * When the Push SW intermitter leaking. Unit may

24、 turn power on itself, change function. Any K0,K1,K2.voltage lower than 5 V Unit microprocessor will lock up. Waitting the Voltage back to 5 V ! ! pressor switch will not work! READ ALL INFO IT WILL Help Y ou Save Time GENERAL CHECK LIST FOR INTERMITTANT operation or NO AUDIO ,VIDEO 1. What is idlin

25、g current on each channel? Adjust and test. (If Idling adj. not change ! replaces surrounding transistors and idling adj. resistor. 2. What was customer setup on speakers level? If too high reset unit and test. (It will over drive amp. When input signal go high unit will go protection) 3. What is ea

26、ch channel voltage from ID+ to chasses ? Good Unit about 0.04V If a channel ID+ voltage much higher than other. Replace the two input transistors (use same transistor) at driver circuit. It will drop this voltage down. 4. Use scope check do you have DC in any audio line ? ( When adj. volume up or do

27、wn. Press and change input bottom) If yes find def. parts IC mutting transistors. 5. What is voltage on IPRO ( PROTECT) Use scope ? Check transistors it may leak. 6. What is voltage on THERMAL line ? Check transistors it may leak ( delay act. Some unit 5 sec, some unit act in 5 min. some 10 min or m

28、ore. To turn unit to Thermal protection) Unit use TXSR XXX LM61CIZ Thermal Sensor. THRM line about 0.95V if unit turn on and 1.5V. Unit will go Thrmal protiction in 15 min. replace this sensor ! 7. Check power supply to all DSP IC . Use scope check voltage and noise! a. If unit audio work intermitte

29、nt .Warm up lost audio. Check +5V,+3.3V and +2.5V if Low down and noise! Check Rag IC . Some unit is in amp board. Not in DSP board. Add more thermal joint compound and test. 8. When you have audio signal go in to a IC but no output. a. check you have good power DC supply to this IC ? b. do you have

30、 good control data from microprocessor to the IC ? c. If good on a. and b. than this IC is bad. (If problem a,b Repair a. or b. before replaces the ICs) 9. Video board problem? Check power supply to IC in board and Control signal from microprocessor! a. If power and control signals all good. Switch

31、IC not working .replace this IC. b. If control signals bad! No video control signals from microprocessor ? Replace microprocessor. ( If microprocessor not available than replace PCB. some unit in DSP board ,some in input pre amp. or Microprocessor board.) 10. When you need help ! please give us all

32、info power Voltage and where you lost signal ? an 11. Digital all channel work but volume control not working. Analog volume work. In set up Speaker o db volume not work and some channel no sound. Use scope to check input sel IC at time adj volume V.CLK V DATA V.STB Good unit have 5V pluse. If V.DAT

33、A only have 3 V The input sel IC Damage. volume may work when unit cool. after IC heat up no control of volume. _CONFIDENTIALITY NOTICE: This document and the information it contains is intended for the exclusive use of Authorized ONKYO Service Centers and their employees. This document may contain

34、information that is privileged, confidential and exempt from disclosure under applicable law and terms of the ONKYO Service Agreement. Any dissemination, distribution or copying of this document and the information it contains is strictly prohibited. 11 Please print out circuit which you work on wri

35、te down voltage you check. TechEmail to us all info When you need us to help ! Give us model # and Ser:# Customer info and problem. ( Always use scope to check) When THRM line Voltage too low 0.1V or too high over 2.5V.Unit go Thermal protection in 3 sec. NEXT PAGE = WITH OUT VIDEO INPUT SIGNAL, = W

36、ITH VIDEO INPUT SIGNAL._ CONFIDENTIALITY NOTICE: This document and the information it contains is intended for the exclusive use of Authorized ONKYO Service Centers and their employees. This document may contain information that is privileged, confidential and exempt from disclosure under applicable

37、 law and terms of the ONKYO Service Agreement. Any dissemination, distribution or copying of this document and the information it contains is strictly prohibited. CONFIDENTIAL TIPS FOR SERVICE 18 Park Way, Upper Saddle River, NJ 07458 No. Date: _ Model: Subject: TX-SR 603X Symptom: MONITOR OUT NOT W

38、ORKING Cause: Procedure for service: INITIAL SETUP ON COMPONENT VIDEO DVD IN 1 VIDEO 1 IN 2 VIDEO 2 IN 3 VIDEO 3 VIDEO VIDEO 4 VIDEO CHECK VIDEO SECTION DIAGRAMS-8 COMPONENT VIDEO SELECT DVD VIDEO 1 VIDEO 2 VIDEO 3 VIDEO 4 R- S1 PIN 2 9 Q2111 + 5 V 0 V + 5 V 0 V 0 V R- S 2 PIN 2 8 Q2111 + 5 V + 5 V 0 V 0 V 0 V S2 PIN 28 Q2111 + 5 V + 5 V 0 V 0 V 0 V