Marantz-PM5003-int-mz08043 电路图 维修手册.pdf

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1、 100 Corporate Drive Mahwah, NJ 07430 Service Bulletin No. : MZ08-043 Date: September 4, 2008 _ Model: PM5003 Subject: The protection operation cannot be deactivated. Symptom: The protection operation cannot be deactivated by the Power Switch being turned OFF/ON. If a problem is detected while the A

2、MP is in operation, the STANDBY LED starts flickering and the operation is ceased. If the problem is no longer detected, the protection operation can be normally deactivated by turning the power OFF and then ON. However, in this case, the STANDBY LED cannot be stopped from flickering, depending on t

3、he timing of the power switch being turned OFF/ON. Solution: As a remedy for this phenomenon, either of the following two measures can be taken. Please check the situation and determine which to take. Clear the protection operation procedure in the RAM by shorting the backup capacitor C620. After de

4、activating the protection operation, ensure that none of “DC Offset”, “DC Balance” and “Over current” (Speaker Short- out) is detected. If no abnormality is found with the amp, the protection operation may have been activated by over current caused by a shot-out of the speaker cable. Before returnin

5、g the repaired unit, please be sure to check how it was used to a customer. _ CONFIDENTIALITY NOTICE: The information contained in this document is intended for the exclusive use by MARANTZ Authorized Service Centers and their employees. This document may contain information that is privileged, conf

6、idential and may be protected from disclosure under applicable laws and terms of the MARANTZ Service Agreement. Any distribution, disclosure, dissemination or copying of this document and the information it contains is prohibited. No responsibility will be accepted by MARANTZ for any damage, injury

7、or loss resulting from the misuse of the information contained in this document. RadioFans.CN 收音机爱 好者资料库 The backup capacitor is capable of storing data in the RAM for up to one week. If the unit comes in for repairs more than one week after the phenomenon has occurred, please understand that no per

8、tinent data may be available for the phenomenon. _ CONFIDENTIALITY NOTICE: The information contained in this document is intended for the exclusive use by MARANTZ Authorized Service Centers and their employees. This document may contain information that is privileged, confidential and may be protect

9、ed from disclosure under applicable laws and terms of the MARANTZ Service Agreement. Any distribution, disclosure, dissemination or copying of this document and the information it contains is prohibited. No responsibility will be accepted by MARANTZ for any damage, injury or loss resulting from the

10、misuse of the information contained in this document. RadioFans.CN 收音机爱 好者资料库 Change the U-PRO & TONE PWB “POS.NO. IC61” from 943243004080M to 943243004510M. The version label will be changed from 3 to 4. 943243004510M has a version 4 microprocessor designation. _ CONFIDENTIALITY NOTICE: The informa

11、tion contained in this document is intended for the exclusive use by MARANTZ Authorized Service Centers and their employees. This document may contain information that is privileged, confidential and may be protected from disclosure under applicable laws and terms of the MARANTZ Service Agreement. A

12、ny distribution, disclosure, dissemination or copying of this document and the information it contains is prohibited. No responsibility will be accepted by MARANTZ for any damage, injury or loss resulting from the misuse of the information contained in this document. RadioFans.CN 收音机爱 好者资料库 Parts: F

13、ORMER NEW Ref # Description Part Number Description Part Number IC61 Microprocessor 943243004080MMicroprocessor943243004510M Serial Number Range: Applicable range: up to and including MZ000833000400 _ CONFIDENTIALITY NOTICE: The information contained in this document is intended for the exclusive us

14、e by MARANTZ Authorized Service Centers and their employees. This document may contain information that is privileged, confidential and may be protected from disclosure under applicable laws and terms of the MARANTZ Service Agreement. Any distribution, disclosure, dissemination or copying of this document and the information it contains is prohibited. No responsibility will be accepted by MARANTZ for any damage, injury or loss resulting from the misuse of the information contained in this document.