Marantz-SR-7300-Service-Bulletin 电路图 维修手册.pdf

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1、Approved by H.TAMURAWritten by K.ONO WQ-19 2 817/additional rule3 (1st Issue 2003-03-19) Date:15-May-2003Model SR7300 Page:1/1REF.NBR:MZ03-003 Circulation:Application: Subject: Int.ref: PHENOMENON Broken Volume or Selector knob by transportation. REASONS A clearance between the front panel and knob

2、were a little large and get stress to the volume shaft. SOLUTION Add the spacer to the front panel as follows. ( Spacer : parts No. 03AJ118010) REMARKS This improvement has been done in the production line after the LOT number 14 and later (The LOT number is # of serial number MZxxxxxx#xxxx.) SERVIC

3、E BULLETIN Broken Knob x for information customer complaint in case of service mandatory . MZxxxxxx01xxxx to MZxxxxxx13xxxx Spacer Parts# 03AJ118010) Peel off the sheet Stick the spacer and push it strongly. RadioFans.CN 收音机爱 好者资料库 Approved by H.TAMURAWritten by K.ONO WQ-19 2 817/additional rule3 (1

4、st Issue 2003-03-19) Date:15-May-2003ModelSR7300 Page:1/2REF.NBR:MZ03-006 Circulation:Application: Subject: Int.ref: PHENOMENON High tone noise can be heard a little from speaker. SOLUTION Please apply the modification of Solution 1 and Solution 2 to the units Lot 01 to Lot 15. Please apply the modi

5、fication of Solution 2 to the units Lot 16 and after. (Solution 1 has already applied to the units lot 16 and later.) * The lot number is mentioned in the Serial number label on the rear panel. ( ex. MZxxxxxx01xxxx : 01 lot) Solution 1 ( For lot 01 to 15) 1) Cut a jumper wire U304 on the PS04 board.

6、 2) Add a capacitor between the pin 3 of the Q681 and the “-“side of the CU80 as follows. SERVICE BULLETIN Improvement of high tone noise x for information customer complaint in case of service mandatory . ALL Cut the Jumper wire U304 Solder to the pin 3 of Q681 Add and solder a capacitor 1000uF/16v

7、. Solder “+” side of the capacitor to the pin 3 of Q681. And “-“ side to the CU80( “-“ side ) Add tube and fix the cap by glue.Solder to the “-“ side of CU80 RadioFans.CN 收音机爱 好者资料库 Approved by H.TAMURAWritten by K.ONO WQ-19 2 817/additional rule3 (1st Issue 2003-03-19) MZ03-006 Page 2/2 Solution 2

8、( For all lot) 1) Add a wire (Length approx. 23cm : Wire size #18 or #20) as follows. (GND to GND) Note: Wiring must be done as following and fixed by glue (burn-resistant type). Add 23cm wire Solder to GND plate Solder to GND pin RadioFans.CN 收音机爱 好者资料库 Approved by S.NAGAO Written by WQ-19 2 817/ad

9、ditional rule 3 (1st Issue 2003-03-19) Date:15-May.-2003Model: SR7300,SR6300 Page:1 / 1REF.NBR:MZ03-018 Circulation:Application: Subject: Int.ref: PHENOMENON When learning and memorizing the remote control codes used by Set-top Box of Time Warner Inc., A part of cursor button cant be learned. SOLUTI

10、ON RC7300SR is exchanged for the improvement the remote controller RC7300SRa. NECESSARY PART Improvement the remote controller part no. ZK03AJ0012 (SR6300: old remote controller part no. ZK15AW0010 FACTORY PART NO.8300030010010) (SR7300: old remote controller part no. ZK03AJ0010) REMARKS The counter

11、measure apply to this claim only. This solution has already been applied in the production line after the Lot number “MZxxxxxx27xxxx” and later. The production of SR6300 has been finished. SERVICE BULLETIN The problem that the remote controller cant lean other the remote controller . x for informati

12、on customer complaint in case of service mandatory . See Below Model name RC7300SRa Approved by S.NAGAO Written by WQ-19 2 817/additional rule 3 (1st Issue 2003-03-19) Date: 10-July-2003 Model: SR7300.SR7300F Page:1 / 1REF.NBR:MZ03-030 Circulation:Application: Subject: Int.ref: PHENOMENON The change

13、 of CPUs software. The specifications of the Set become the same as SR9300. SOLUTION 1. Update the CPU(QU01) firmware version to “ V030502_1 ” 2. Please refer to the service manual SR7300/SR7300F/PS7300 page53 about details of “10.UPDATE FIRMWARE” “Download Firmware for CPU(Mode2). 3. Update the fir

14、mware is attached to the e-mail.(file name: SR7300_H8_030502_1.zip) Attention This update is the same as REF.NBR: MZ03-022. (Subject: The output of Subwoofer is delayed) Therefore, RS232C control becomes “new protocol ” which has been updated of REF.NBR: MZ03-022. Update software has been sent with

15、MZ03-022 on July 2. Please use it. SERVICE BULLETIN RS232C control is changed to “ new protocol ”. x for information customer complaint in case of service mandatory . MZxxxxxx01xxxx to MZxxxxxx16xxxx “ SR7300_0305021.mot Approved by S.NAGAO Written by WQ-19 2 817/additional rule 3 (1st Issue 2003-03

16、-19) Date:28-Sep-2003Model: SR7300/K1G Page:1 / 1REF.NBR:MZ03-041 Circulation:Application: Subject: Int.ref: REASON It depends on the Chinese safety standard requirement. SOLUTION The following parts are changed. 1. MAINS CORD is changed from (Z011) part no. ZC01803090 to (W001) part no.YC01800880 .

17、 2. MAINS CORD BUSH ( 915G ) part no. 450H259010 ( NIFCO #2271) is added. 3. REAR PANEL ( 901G ) is changed.(This is not supply of the service spare part) 4. AC IN socket is deleted. SERVICE BULLETIN The MAINS CORD changed from AC IN socket type to fixed type. (/K1G version only) x for information customer complaint in case of service mandatory . From MZxxxxxx30 xxxx Changed Fixed type MAINS CORD Part no. YC01800880 L= about 1800mm