Panasonic KV-S6055W Service Manual page 82

to LED1 (D106-D101) status can be available for trouble-shooting.
Scanner CPU checks attached ROM and RAM on MAIN CONTROL Board and on SCSI Board after
power ON. It displays 6 red LED pattern on the MAIN CONTROL Board according to progress of
checking. All LED OFF means the MAIN CONTROL Board's 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 CONTROL Board Error
(Another model MAIN Board is
supplied)
No Error
82
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