2-12. Service Mode Operation
[Reference]
If the input of synchronization signal to the PR LSI or RC LSI is abnormal, the connection check between PR LSI and RC LSI also detects the abnor- mality.
RC LSI relation check is carried out only when the digital output of DXC- D35/D35P is used for connecting
DSP COM
The details of check result for the communication between each LSI and microcomputer are displayed.
004H: The communication between RC LSI and microcomputer is abnormal. (IF IC520)
002H: The communication between PR LSI and microcomputer is abnormal. (PR IC411)
001H: The communication between PP LSI and microcomputer is abnormal. (PR IC405)
[Reference]
The RC LSI communicates with the microcomputer by six pins of pin26(CS), pin25(SCK), pin24(SDA0), pin23(SDA1), pin22(SDA2) and pin21(SDA3).
The PR LSI communicates with the microcomputer by six pins of pin58(CS), pin57(SCK), pin56(SDA0), pin55(SDA1), pin54(SDA2) and pin53(SDA3).
The PP LSI communicates with the microcomputer by six pins of pin41(CS), pin40(SCK), pin39(SDA0), pin38(SDA1), pin37(SDA2) and pin36(SDA3).If the communication between LSI and the microcomputer is abnormal, the abnormality of other item may be detected at the same time.
MEMORY
The details of check result for the communication between each EEPROM and microcomputer are displayed.
080H: The communication between EEPROM of ES and microcom- puter is abnormal.
040H: The communication between EEPROM of IF and microcomput- er is abnormal.
020H: The communication between EEPROM of TG and microcom- puter is abnormal.
010H: The communication between EEPROM of MB and microcom- puter is abnormal.
[Reference]
The corresponding display for the data of each EEPROM on the service menu becomes a blank column, when the EEPROM on the TG, IF, ES and MB boards is abnormal.
