LabGruppen Service_Bulletin_2008_no_4_SGW_Failures电路图.pdf

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1、 Document type: Created: Page: SERVICE BULLETIN (2008-09-24) Page 1 of 2 THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF LAB.GRUPPEN AB AND TC Electronic A/S 2005 Lab.gruppen AB, Faktorvgen 1, S-434 44 KUNGSBACKA, SWEDEN |. Technical Service Bulletin Created

2、 by: Lab.gruppen AB Service Department Date: 080924 Reference no: SGW Failure Affected models Following models are affected by this technical service bulletin: FP 6000Q FP 7000 FP 10000Q FP 13000 Affected boards/modules MIS130, SP130F. Symptom When the SGWs has failed there can in some cases cause o

3、ther component failures which can be hard to find. This bulletin describes how to check and fix an amplifier that have been subjected for SGW failures. Solution 1: Exchange the faulty SGWs. 2: If soft start resistor R2 on MIS130 is defect, exchange this. 3: Check 2R2 gate resistors R2 R4. 4: Check D

4、4 and Q4 5: Check so that the voltage regulation works normally. If not exchange U3 and C10 and also check PWMF1. 6: If above measures does not solve the problem, contact Lab.gruppen Service Department. Note - RadioFans.CN 收音机爱 好者资料库 Document type: Created: Page: SERVICE BULLETIN (2008-09-24) Page 2

5、 of 2 THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF LAB.GRUPPEN AB AND TC Electronic A/S 2005 Lab.gruppen AB, Faktorvgen 1, S-434 44 KUNGSBACKA, SWEDEN |. Part numbers Model Part number to be ordered FP 6000Q - FP 7000 - FP 10000Q - FP 13000 - History Date Created By Status Bulletin no. Comment 080924 PB SHARP 4 RadioFans.CN 收音机爱 好者资料库