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Date: 15-May-2003 |
Model: SR5200/SR6200/SR7200 |
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SERVICE |
BULLETIN |
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1/2 |
REF.NBR: MZ02-033 |
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Hum noise can be heard from Headphone out. |
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x for information |
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customer complaint |
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See below |
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in case of service |
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mandatory |
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Int.ref: |
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[ PHENOMENON] |
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Hum noise can be heard from Headphone out |
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[REASONS] |
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Caused by ground loop of the headphone out. |
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[SOLUTION] |
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Please apply the following solution. |
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Cut a jumper J118
Connect the GND (at J118) to the chassis
by the earth rug.
Main PCB
Approved by H.TAMURA |
Written by K.ONO |
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WQ-19 2 817/additional rule3 (1st Issue 2003-03-19) |
MZ02-033 Page 2/2
[REMARKS]
This solution has already been applied in the production after the serial numbers below.
SR5200/N2B |
MZ020149006031 and after |
SR5200/N2G |
MZ020149004426 and after |
SR5200/U2B |
MZ020149003041 and after |
SR5200/K2G |
MZ020149003041 and after |
SR6200/N2B |
MZ020149003531 and after |
SR6200/N2G |
MZ020150002446 and after |
SR6200/U2B |
MZ020149004311 and after |
SR6200/K2G |
MZ020150001666 and after |
SR7200/N2B |
MZ010148002426 and after |
SR7200/N2G |
MZ010148002781 and after |
SR7200/U2B |
MZ010148008211 and after |
SR7200/K2G |
MZ010149000681 and after |
Approved by H.TAMURA |
Written by K.ONO |
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WQ-19 2 817/additional rule3 (1st Issue 2003-03-19) |
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Date: 15-May-2003 |
Model: SR5200/SR6200/SR7200 |
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SERVICE |
BULLETIN |
Page: |
1/6 |
REF.NBR: MZ02-032 |
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Subject: |
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Pop noise |
Circulation: |
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Application: |
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x for information |
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customer complaint |
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See below |
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in case of service |
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mandatory |
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Int.ref: |
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[ PHENOMENON] |
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Pop noise appears when stop playing or track skip on CD playback with Digital connection. Pop noise appears in the condition of the Main volume is changed 74dB to 75dB(Mute) .
[SOLUTION]
Please apply the modifications as mentioned in page 2 to page 6.
[Caution] Modifications are deferent with version of the P.C.Board. Please confirm the version of the P.C.Board
*Version 1 P.C.Board (7020 06076 001-0) : Please apply the modification mentioned on Page2 to 4.
*Version 2 P.C.Board (7020 06076 001-3) : Please apply the modification mentioned on Page5 to 6.
[REMARKS]
This solution has already been applied in the production after the serial numbers below.
SR5200/N2B |
MZ020149006031 and after |
SR5200/N2G |
MZ020149004426 and after |
SR5200/U2B |
MZ020149003041 and after |
SR5200/K2G |
MZ020149003041 and after |
SR6200/N2B |
MZ020149003531 and after |
SR6200/N2G |
MZ020150002446 and after |
SR6200/U2B |
MZ020149004311 and after |
SR6200/K2G |
MZ020150001666 and after |
SR7200/N2B |
MZ010148002426 and after |
SR7200/N2G |
MZ010148002781 and after |
SR7200/U2B |
MZ010148008211 and after |
SR7200/K2G |
MZ010149000681 and after |
Approved by H.TAMURA |
Written by K.ONO |
WQ-19 2 817/additional rule3 (1st Issue 2003-03-19)
MZ02-032 Page 2/6
* Version 1 P.C.Board (7020 06076 001-0) : Please apply the modification mentioned below (Page2 to 4).
Version1 P.C.B.
Replace R582 (7 pcs) 470k ohm to 68k ohm (Parts #: NN05683610).
Replace R549 (7pcs) 470k ohm to 100k ohm (Parts #: NN05104610).
Approved by H.TAMURA |
Written by K.ONO |
WQ-19 2 817/additional rule3 (1st Issue 2003-03-19)
MZ02-032 Page 3/6
Replace/change the condenser C502 (7pcs) 100pF to the resister 100k ohm (Parts #: NN05104610)
Remove R543/R544/R545/R546/R547 and C505.
Approved by H.TAMURA |
Written by K.ONO |
WQ-19 2 817/additional rule3 (1st Issue 2003-03-19)
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