HarmanKardon-AVR10-avr-sb4维修电路原理图.pdf
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HarmanKardon-AVR10-avr-sb4维修电路原理图.pdf
harman/kardon Incorporated 250 Crossways Park Drive, Woodbury New York 11797 (516) 496-3400 harman/kardon Service Bulletin Service bulletin # H/K9905 July 1999Warranty labor rate: MINOR repair To: All harman/kardon Service Centers Models: AVR10, HK3250 Subject: Dead unit, No display In the event you receive an AVR10 or HK3250 Audio/Video receiver with the complaint “unit is dead, no display or output”, follow the test and repair procedure as outlined below: 1) Connect power cord to an AC outlet, and press the power button on front panel. If indicator lights on the front panel do not turn on, unplug the unit. 2) Remove top cover. Check AC main fuse F701; if blown, replace and test unit: AVR10F701 2.5A slow blow (h/k part# 5508302535) HK3250F701 3.15A slow blow (h/k part# 5508302735) 3) If F701 is not blown, replace IC101, the LC7821 FUNCTION SELECTOR IC, (h/k part# 5654-LC7821). IC101 (30 pin DIP) is located in the right rear corner of the MAIN PCB when viewed from the top. To replace IC101, remove bottom cover (14 screws including 4 in the bottom edge of the front panel). 4) Replace both covers and test unit. RadioFans.CN 收音机爱 好者资料库
