System Error - Marantz SR-12S1 Service Manual

12. SYSTEM ERROR

The CPU inside the unit monitors peripheral interfaces and if a trouble is detected the following information is displayed on the
FLD.
1. Trouble in DSP1
If communication with DSP1(Q610) is troubled more than 2 seconds, FLD shows below.
E R R
* This display stays and sound is muted.
2. Trouble in DSP2
If communication with DSP2(Q640) is troubled more than 2 seconds, FLD shows below.
E R R
* This display stays and sound is muted.
3. Trouble in ADC
If CAL signal from A/D converter(QK51, QK52) keeps high more than 2 seconds, FLD shows below.
E R R
* In analog input mode, this display stays and sound is muted.
4. Trouble in EEPROM
If data from EEPROM(QU70) does not match, FLD shows below.
E R R
* After displaying it, Back-up Data is reset to default.
5. Trouble in EEPROM I/F
If communication with EEPROM(QU70) is troubled more than 2 seconds, FLD shows below.
E R R
6. Trouble in 5V Supply
If 5V supply to P604(DSP/CPU PCB) is troubled, FLD shows below.
E R R
All manuals and user guides at all-guides.com
O R D S P
O R D S P
O R A D C
O R E 2 P
O R E 2 P
O R P O W
1 R O M
2 R O M
I F
5
73