Marantz-SR4300-avr-sb1 维修电路原理图.pdf

Approved by S.NAGAO Written by WQ-19 2 817/additional rule 3 (1st Issue 2003-03-19)Date:31-Oct.-2003Model: SR4300/SR4400Page:1 / 3REF.NBR:MZ03-047Circulation:Application:Subject:Int.ref:PHENOMENON1) The protection circuit does not work when the power transistor was damaged.2) When the power transistor was damaged, about 40 V outputs to speaker out.3) The protection circuit function does not operate, then the unit will not be in POWER STANDBY mode and the speaker output RELAY does not work.REASON 1) When the transistor is damaged before turn on the unit, the micro processor can not detect protection signal (Protect2).2) Turn on the unit, the down edge of a protection signal (Protect2) is undetectable for about 2 seconds after the micro processor resetSOLUTIONThe protection output signal of Protection IC is added to the SPK MUTE signal in hard, andSpeaker MUTE is always set to “ON” when abnormal occur protection 1.SR4300 DIGITAL/AUDIO PCB1) Chip Resistor LS850 (100 ohm 1/16W part no. NN05101610 ) is changed to Silicon Diode(Part no. *HD201810R- 1SS400 POHM: EMD2, EIAJ: SC-79, JEDEC: SOD-523 ).MAIN PCB2) Chip Resistor DN601(Part no.HD20002000-Silicon Diode 1SS254 ROHM) is added between BASE of QN606 SEMICOM.COMP and No.5 pin of JFN101 Connector2.SR4400 DIGITAL/AUDIO PCB1) Chip Resistor RS928 (100 ohm 1/16W part no. NN05101610 ) is changed to Silicon Diode(Part no. *HD201810R- 1SS400 POHM: EMD2, EIAJ: SC-79, JEDEC: SOD-523 ).MAIN PCB2) Chip Resistor DN601(Part no.HD20002000-Silicon Diode 1SS254 ROHM) is added between BASE of QN606 SEMICOM.COMP and No.5 pin of JFN101 ConnectorAs for the details, Please see page2/3 and 3/3REMARKSThe countermeasure apply to this claim only.This problem apply to the Service code number XE00 xxxxxxxxxx.This improvement has been done in the production the Service code number XE01xxxxxxxxx and after.SERVICE BULLETIN The problem of the Speaker protection circuit.x for information customercomplaint in case of servicemandatory.Service code XE00XE00 xxxxxxxxxxRadioFans.CN 收音机爱 好者资料库Approved by S.NAGAO Written by WQ-19 2 817/additional rule 3 (1st Issue 2003-03-19)SR4300/SR4400 SERVICE BULLETIN (REF.NBR:MZ03-047) page2/3 SR4300LS850 is changed toPart no. *HD201810RCautionJFS08 (FPC CONNECTOR) side isCATHODEDIGITAL/AUDIO PCBNo.5 pin of JFN101BASE of QN606Adhesives:SC608LVZ (Sony Chemical Corp. Self-extinguishing adhesive) or the equivalentInsulation tube is usedMAIN PCBDN601Part no. HD20002000CATHODE MARKRadioFans.CN 收音机爱 好者资料库Approved by S.NAGAO Written by WQ-19 2 817/additional rule 3 (1st Issue 2003-03-19)SR4300/SR4400 SERVICE BULLETIN (REF.NBR:MZ03-047) page3/3 SR4400CATHODE MARKRS928 is changed toPart no. *HD201810RCautionJFS08 (FPC CONNECTOR) side isCATHODEDIGITAL/AUDIO PCBNo.5 pin of JFN101BASE of QN606Adhesives:SC608LVZ (Sony Chemical Corp. Self-extinguishing adhesive) or the equivalentInsulation tube is usedMAIN PCBDN601Part no. HD20002000Approved by S.NAGAO Written by WQ-19 2 817/additional rule 3 (1st Issue 2003-03-19)Date:30-June-2003Model: SR4300,SR4400Page:1 / 1REF.NBR:MZ03-025Circulation:Application:Subject:Int.ref:PHENOMENONThe problem occurs in the following operation.1. First, RDS(Radio Data System) in the FM signal is received.2. Then preset memory newly.3. Then press the POWER button on the remote controller , the unit became Standby mode.4. Again, press the POWER button on the remote controller, the volume level becomes “ - ” and Frequency indication becomes the setup of default.(This problem occurs only SR4300/N1B/N1G/A1B/A1G and SR4400/N1B/N1S/A1B/A1S)SOLUTIONReplace MICRO PROCESSOR(Flash) ICS18 on the DIGITAL/AUDIO PCB.NECESSARY PART1. SR4300 POS.NO ICS18 Part no. *HS09AWH0R New version no: VER .030527 (H8/3026F Flash Ver.030527 wrote FACTORY PART No. OICH83026F43SV0527) OLD part no. *HU100620R FACTORY PART No. OICH83026F2. SR4400 POS.NO ICS18 Part no. *HS26AWH0R New version no: VER .030515 (HD6433026D04F Mask Ver.030515 FACTORY PART No. OICHD6433026D04F) OLD part no. *HU100620R FACTORY PART No. OICH83026FVersion no can be confirmed with SERVICE MODE, Refer to service manual of SR4300 page56 orSR4400 page52.REMARKS1. The countermeasure apply to this claim only.2. This improvement has been done in the production the serial no.XE000322xxxxxx and after (SR4400)3. The production of SR4300/N1B/N1G/A1B/A1G has been finished.SERVICE BULLETIN FM(with RDS) signal is received, Frequency Indication becomes the setup of default by the remote control operation . (only N and A version occurs)x for information customercomplaint in case of servicemandatory. See BelowApproved by S.NAGAO Written by WQ-19 2 817/additional rule 3 (1st Issue 2003-03-19)Date:30-June-2003Model: SR4300,SR4400Page:1 / 1REF.NBR:MZ03-023Circulation:Application:Subject:Int.ref:PHENOMENONWhen the playback CD-R/RW of Digital that SCMS(Serial Copy Management System) signal was recorded,The sound is interruptedSOLUTIONReplace MICRO PROCESSOR(Flash) ICS18 on the DIGITAL/AUDIO PCB.NECESSARY PART1. SR4300 POS.NO ICS18 Part no. *HS09AWH0R New version no: VER .030527 (H8/3026F Flash Ver.030527 wrote FACTORY PART No. OICH83026F43SV0527) OLD part no. *HU100620R FACTORY PART No. OICH83026F2. SR4400 POS.NO ICS18 Part no. *HS26AWH0R New version no: VER .030515 (HD6433026D04F Mask Ver.030515 FACTORY PART No. OICHD6433026D04F) OLD part no. *HU100620R FACTORY PART No. OICH83026FVersion no can be confirmed with SERVICE MODE, Refer to service manual of SR4300 page56 orSR4400 page52.REMARKSThe countermeasure apply to this claim only.This improvement has been done in the productionthe serial no.XE000323xxxxxx and after (SR4300)the serial no.XE000322xxxxxx and after (SR4400/N1B/N1S)SR4400/A1B/A1S/K1S/K1G/U1B have used New MICRO PROCESSOR.Therefore, this problem doesnt occur.SERVICE BULLETIN The sound is interrupted, when the playback DIGITAL of CD-R/RW of the SCMS signal.x for information customercomplaint in case of servicemandatory. See BelowApproved by H.TAMURAWritten by K.ONOWQ-19 2 817/additional rule3 (1st Issue 2003-03-19)Date:15-May-2003Model SR4300Page:1/1REF.NBR:MZ03-009Circulation:Application:Subject:Int.ref: PHENOMENONNoise (Crackly sound) appears from front Lch and/or surround Lch.SOLUTIONReplace CODEC IC AK4529VQ (ICS08) to new type one ( Parts No. *HC108140R).The countermeasure needs to apply to this claim only.REMARKSNew IC has been applied in the production after the Week code number 0250 and after.(The Week code number is # of serial number MZxx#xxxxxx.)SERVICE BULLETINNoise from Front Lch and/or Surround Lchx for informationcustomer complaintin case of servicemandatory.BeforeXExx0250 xxxxxxxApproved by S.NAGAO Written by WQ-19 2 817/additional rule 3 (1st Issue 2003-03-19)Date:30-June-2003Model: SR4300Page:1 /3REF.NBR:MZ03-026Circulation:Application:Subject:Int.ref:PHENOMENONNoise is conspicuous PREAMP OUTPUTS and SPEAKER OUTPUTS by the conditions.SOLUTIONthe change of the following part. On the DIGITAL/AUDIO PCB 1. Replace RS387, RS388, RS390, RS391, RS392, RS393 (2.4 k ohm) to 8.2 k ohm (part no. NN05822610)2. Replace RS389 (1 k ohm) to 2.7 k ohm (part no. NN05272610) On the 6.1CH/PRE OUT PCB 3. Cut a pattern. (please see Fig.1)4. Add a wire. (please see Fig.1)5. Twist the wire 5 times. (please see Fig.2) The 9pin wires are connected to JFS05(DIGITAL/AUDIO PCB) from JFK1(6.1CH/PRE OUT PCB) As for the details, please see page2/3 and page3/3.REMARKSThe countermeasure apply to this claim only.This improvement has been done in the production the serial no.XE000327xxxxxx and after (SR4300).( But, Item 3, 4 are excluded.)SERVICE BULLETIN Noise is conspicuous by the conditions.x for information customercomplaint in case of servicemandatory. See BelowSR4300 SERVICE BULLETIN page 2/3Fig.1Pattern Cut Add a wirePattern CutSR4300 SERVICE BULLETIN page 3/3Fig.2FRONT SIDETwist the wire 5 timesTwist the wire 5 timesApproved by S.NAGAO Written by WQ-19 2 817/additional rule 3 (1st Issue 2003-03-19)Date:28-Aug-2003Model: SR4300Page:1 / 1REF.NBR:MZ03-033Circulation:Application:Subject:Int.ref:PHENOMENON1. The power shut-down suddenly, and STANDBY indicator turned off.2. No response of the unit even if the POWER button is pressed.3. The unit returned normally when connect the power plug to the outlet again. Or, When it is left alone for a while, the unit may be returned normally.REASONWhen the unit warms up, CPU clock stops, and the unit becomes a perfect stop.The capacitor (0.1uF) was mounted instead of resistor RS870(10 k ohm) .(When the PCB is repaired, it has the possibility that a capacitor (0.1uF) was used.) * Though occurrence probability is low, information is provided as REPAIR HINT.SOLUTION1. Confirm whether RS870 on DIGITAL/AUDIO PCB is 10 k ohm Chip resistor.2. The part which isnt right, changed to 10 k ohm Chip resistor (Part no. NN05103610). REMARKSThe countermeasure apply to this claim only.This problem apply to the week code number MZ000331xxxxxx.This solution has already been applied in the production after the week code number MZ000332xxxxxx.SERVICE BULLETIN There is a case that the power shut-down suddenly.x for information customercomplaint in case of servicemandatory. See BelowRS870 (10 k ohm)RS870 is this side of DIDITAL/AUDIO PCBApproved by S.NAGAO Written by WQ-19 2 817/additional rule 3 (1st Issue 2003-03-19)Date:18-Mar.-2004Model: SR4300Page:1 / 1REF.NBR:MZ04-032Circulation:Application:Subject:Int.ref:PHENOMENONTreble is slightly distorted when the level of TruBass is increased in CSII mode. (only in case of Rch)It occurs when “Speaker Size setup” is setas the right figure.SOLUTIONReplace IC (ICS14) on the DIGITAL/AUDIO CIRCUIT BOARD.NECESSARY PART Factory part no.POS.NO ICS14 Part no. *HS09AWX2R MX29LV040QC-90 OICMX29LV040QC90 OLD part no. *HS09AWX0R Factory part no. OICMX29LV040QC90 REMARKSThe countermeasure apply to this claim only1) This problem apply to the following serial number. SR4300 apply to XE000252xxxxxx.2) This improvement has been done in the production serial number XE000301xxxxxx and after.SERVICE BULLETIN Treble is slightly distorted in CS II mode. (only in case of Rch)x for information customercomplaint in case of servicemandatory.See BelowICS14