CCV). PN 32895624 TO PN 3289562-5, VENDOR SERVICE BULLETIN MOS INDICATING/RECORDING SYSTEMS - PHASE 3 DISPLAY UNIT -MODIFICATION (MOD) B TO PHASE 3 DISPLAY UNIT. P51 RECOMMENDED 4091900-931 THRU -934. -941 THRU -944: REPLACE BOTH BACKLIGHT ASSEMBLY. PN 4091896-902. AND BACKLIGHT ELECTRONICS PRINTED BOARD AS