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Date: 28-Aug-2004 |
Model: SR5400, SR6400 |
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SERVICE |
BULLETIN |
Page: |
1 / 2 |
REF.NBR: MZ04-061 |
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Subject: |
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1. Noise from Surround L/R Speaker. |
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Level |
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Application: |
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2. The Sound is MUTE by operation of HDD Recorder. |
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MZ00xxxxxxxxxx |
3. The output level changes. |
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Int.ref: |
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[PHENOMENON]
1.Noise from Surround L/R Speaker.
1)Turn on the unit after 5-second or more standby state.
2)After the relay of the speaker turns on and 2 seconds or more pass.
3)PCM input of CD, Noise can be heard from Surround L/R speakers just before Playback CD.
(Only when other speakers are lengthened on the basis of Surround L/R by setup of “SPEAKERDISTANCE”, phenomenon occurs.)
2.The Sound is MUTE by operation of HDD Recorder.
1)When connect SR5400 / SR6400 to Panasonic or Toshiba HDD Recorder by Digital connection, then operation by HDD Recorder. The Sound is Mute
"Reproducibility "
-Connection with Panasonic model:
HDD Recorder returns to built-in Tuner after operating reservation screen, phenomenon will occur. -Connection with Toshiba model:
Playback Dolby Format recorded on the hard disk, then changes to PCM playback of built-in tuner, phenomenon will occur.
3.The output level changes.
1)When SUBWOOFER is chosen as NONE by SPAKER SETUP and Press the 6.1 CH INPUT button during S-Direct operation, output level will change.
[REASONS]
Fault of DSP CODE and the signal detection method
[SOLUTION]
The software was fixed.
1.Replace the microprocessor IC28 on the DSP PCB. Version to [ V040412 1 ]
2.Replace the DSP IC20 on the DSP PCB. DSP Code ID to [ CD02 02010116 ] Please see to the service manual page 60 about details of “10. SERVICE MODE”.
[NECESSARY PART] |
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1. POS. No. IC28 Part no. 90M-HS27AWH2R |
(HVIHD64F2398F20 programmed flash ROM) |
[OLD part no. * HS27AWH0R ] |
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2. POS. No. IC20 Part no. 90M-HS27AWX2R |
(HVIMX29LV400TTC programmed flash ROM) |
[OLD part no. * HS27AWX0R ] |
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[REMARKS] |
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This improvement has been done in the production the service code MZ02 and after.
Approved by S.NAGAO Written by
WQ-19 2 817/additional rule 3 (1st Issue 2003-03-19)
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