System Error - Marantz SR7400 Service Manual
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Also See for SR7400:
- User manual (178 pages) ,
- Specification (17 pages) ,
- Specifications (1 page)
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11. SYSTEM ERROR
When the microcomputer detects a trouble, the following
information is displayed on the FLD.
• After the error contents indication, Surround Mode is
initialized and returned Factory mode.
• The contents of the ERROR indication are the followings.
1. Trouble in DSP.
If communication with DSP is troubled more than 2 seconds
C
H
E
C
K
Indication is keep and sound is mute.
2. Trouble in DSP Code.
The trouble of DSP Code was found.
C
H
E
C
K
3. Trouble in ADC.
When ADC input was chosen and CAL signal continued
High about 2 seconds after the ADC Calibration start.
C
H
E
C
K
4.Trouble in EEP-ROM
If data from EEPROM does not match.
C
H
E
C
K
5. Trouble in EEP-ROM IF
If communication with EEPROM is troubled more than 2
seconds.
C
H
E
C
K
6. Trouble in RS-232C.
If communication of Panja with RS232C is troubled more
than 2 seconds.
C
H
E
C
K
7. Trouble in 5V Supply
If 5V supply to DATA DIR is troubled.
C
H
E
C
K
8. Trouble in Protection
CPU turns off the speaker output
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A
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2
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2
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F
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2
C
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O W
5
T
11. SYSTEM ERROR
C
H
E
C
K
C
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E
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K
C
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E
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K
C
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E
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K
C
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K
C
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K
C
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P
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60
D
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2
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2
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5
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M
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