HarmanKardon-AVR10-avr-sb4维修电路原理图.pdf

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1、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

2、 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, u

3、nplug 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