When MUSIC fails 4 times while the machine is turned ON.MUSIC error The results of MUSIC pattern reading failed 4 times while the machine is turned ON. The leading edge LD1 synchronization detection signal of the corresponding color was not output within 100 ms while the polygon mirror motor was operating at normal speed. Leading Edge: LD1 synchronization detection error: Ye. Adjust SP2-184-006 through 009 while checking the images until the values of SP2-102-001,007 become 123 ± 30.Synchronization detection board defective.The interface harness to the synchronization detection unit damaged or not connected correctly.After the polygon turned on, the CPU monitored for error flags in 100 ms cycles and detected an error flag.When a synchronization detection error flag is asserted to VTEC status register.Leading Edge: LD1 synchronization detection error: Bk. Power or signal harness loose, broken, defective.White roller behind the CIS damaged, dirty, or not installed correctly.The first, second detections trigger initial/feed jam alerts, the third detection issues this SC code. The shading peak values are to low due to damage to the dual array of the CIS LED (this is confirmed by the gray balance check for CIS scan control). Dual array CIS LED is defective, so there is a large difference between the averaged value in the area of the leading edge in the main scan direction and the average value in the area of the trailing edge. The average value in the area at the leading edge in the main scan direction was lower than the value prescribed for shading peak data at initialization and original feed. There was a problem with the light source mounted in the CIS device at initialization. Harness defective Replace the following harnesses. Scanner carriage defective Replace the scanner carriage. If the white guide plate is in an unusual state, replace the white guide plate. Check the white guide plate attached to the exposure glass. Check the white guide plate (exposure glass). SBU – LEDB connector (SBU side connector on the scanner carriage).Check if the SC reoccurs by cycling the power after each step.
If the SC occurs again, do the following steps.
Error detection timing During the scanner adjustment (detecting the lighting error) at the time of applying power source for scanner (when the main power is turned ON). Lamp Error (Detecting the lighting error) The white level peak did not reach the prescribed threshold when the white guide plate was scanned.