Marantz-SR4500-avr-sb2 维修电路原理图.pdf

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1、Approved by S.NAGAO Written by WQ-19 2 817/additional rule 3 (1st Issue 2003-03-19) Date:27-Sep-2004 Model: SR4500 Page:1 / 1 REF.NBR: MZ04-065 Level Application: Subject: Int.ref: PHENOMENON A reading leak occurs in the continuation code of the Remote Controller. (It is especially UP / DOWN of the

2、Volume.) REASONS The protection circuit operates by Impulse Noise. SOLUTION 1. POS.NO R564 RESISTOR (47K OHM) is changed to RESISTOR 15K OHM +-5% 1/6W (Part no. 00MGD05153160 ) on the VIDEO PCB. NECESSARY PART POS.NO R564 00MGD05153160 (15K OHM +-5% 1/6W) This is “nsp” part, MARANTZ will not supply

3、this part. REMARKS 1. This problem apply to the following serial number. SR4500/N1S MZ000426000001 to MZ000426000520 SR4500/N1G MZ000426000001 to MZ000426000628 2. This improvement has been done in the production serial number MZ000430 xxxxxx and after. 3. The following model has improved from the top of mass production. SR4500/A1B/A1S, SR4500/N1B, SR4500/U1B/U1S, SR4500/K1G and SR4500/L1G. SERVICE BULLETIN The reading accuracy improvement of the continuation code of the Remote Controller. See below R564 RadioFans.CN 收音机爱 好者资料库