Onkyo-TXSR503-avr-tt2 电路图 维修手册.pdf

_ 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 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 Technical Tip 18 Park Way, Upper Saddle River, NJ 07458 Date: May 25, 2006 _ Model: Sample TX-SR503, HT-R530 Subject: Relay constantly clicks, wont power ON Symptom: The relays click but the set will not power ON. Solution: Check Fuse resistor R9593 for an open condition and replace if necessary. Resolder the terminal lugs on the Main transformers secondary. RadioFans.CN 收音机爱 好者资料库 Tip Ta Tod only Check from pin 11 S3GND to pin 14 and 13 About 10V AC Same as SEC2-1 and SEC2-2 on JL9501A or JL9501B also P9502A and P9502 AC input to D9005 on U05 NAAF-8523 Board. When you lost any AC SEC2-1 or SEC2-2 lost +12V to Reg IC Q5640. Unit will have Tip Ta Tod relay sound . Power will not turn on. Note: When Output transistor Def. short out E,B,C. the F901A B+ B- short and F901A will open. F6901 and F6902 may also open. Lost power supply This time press Standby / on Unit will only sound Ti Ta Ti Ta. . Unit go to Tip Ta Main Relay on and off .on and off in 3 sec after power on. POWERD line and +10S line change up and down. A. If audio output damage power circuit Fuse , fuse resistor open. B+ B- Leaking to gound. B. Power transformer def. or connection from main transformer to power supply circuit open. Apply to most Unit ! Main microprocessor was good. CONFIDENTIALITY NOTICE: The content of this Bulletin is Confidential Information as defined in the applicable Independent Service Center Agreement. It is for the exclusive use of Onkyo Authorized Service Centers. Republication, dissemination or posting of this Bulletin on the internet or in any blog is strictly prohibited. CONFIDENTIALITY NOTICE: The content of this Bulletin is Confidential Information as defined in the applicable Independent Service Center Agreement. It is for the exclusive use of Onkyo Authorized Service Centers. Republication, dissemination or posting of this Bulletin on the internet or in any blog is strictly prohibited. SERVICE TIPS NO: May 25, 2006 MODELS : HT-R330 SUBJECT : Relay constantly clicks, wont power ON only sound TiTaTiTa. Solution: Check do you have +12 V to Reg IC Q5640 , R9593 may open or have bad solder on connection. On T901. lost AC on SEC2-1 or SEC2-2 Check Low voltage supply circuit. RadioFans.CN 收音机爱 好者资料库