Panasonic KV-S2065L Service Manual page 78

Scanner CPU checks attached ROM and RAM on main control and
on SCSI I/F board after power ON. It displays 6 red LED patterns on
main board according to progress of checking. All LED OFF means
main board check is finished normally. If some errors are detected,
some LED remains to light.
Main Board LED display
: Lighting, : Not Lighting
LED 6 5 4 3 2 1
Requirement after parts replacement
Following adjustments are required when print circuit board or part is replaced.
Error Detail
LCD No Response Error
Flash-ROM check Error
SRAM check Error
Internal SRAM ( Inside of CPU )
check Error
GA_SENSOR shading check Error
GA_SENSOR line correction RAM
check Error
EEPROM check Error
MAIN Board Error (Another model
MAIN Board is supplied.)
No Error
78
Check Point
Replace MAIN Control Board
Replace MAIN Control Board
Replace MAIN Control Board
Replace MAIN Control Board
Replace MAIN Control Board
Replace MAIN Control Board
Replace MAIN Control Board
Replace MAIN Control Board