6-96 DNW-A100/A50/A45DNW-A100P/A50P/A45P(16) Stop the playback of the alignment tape CR5-1B/CR5-1B PS, and eject it.(17) To operate the maintenance mode, press the MENU button once.(18) To exit A37 : TBC VR, press the MENU button once again.Data save [to step (22)]:Perform the data save only when VISC PHASE’s data value of A37 : TBC VR is changed.(19) To exit A37 : TBC VR, press the MENU button once.(20) Enter A3F : NV-RAM CONTROL of the maintenance mode, then execute “SAVE ALL ADJUSTDATA”.(21) Check that the message “Save Complete” is displayed on the video monitor.(22) To exit A3F : NV-RAM CONTROL, press the MENU button once.(23) To exit the maintenance mode, press the MENU button three times.6-8. TBC-24 Board ReplacementThe electrical adjustments are essential after the TBC-24 board is replaced.To perform the electrical adjustment, the following equipment and fixtures are required.nSome adjustments are different according to the board number suffix (XX of 1-648-542-XX) of TBC-24board.Be sure to check the suffix of board number before replacement. The board number is indicated on theleft margin (A-6) of A side of TBC-24 board.. Component video signal generator: TEKTRONIX TSG-300 or equivalentnIt is required that the component video signal generator is able to output the 50% bowtie signal.. Composite video signal generatorFor DNW-A100/A50/A45: TEKTRONIX TSG-170A or equivalentFor DNW-A100P/A50P/A45P: TEKTRONIX TSG-271 or equivalent. Component waveform monitor: TEKTRONIX WFM300 or equivalent. Composite waveform/vector monitorFor DNW-A100/A50/A45: TEKTRONIX 1750, 1780R, or equivalentFor DNW-A100P/A50P/A45P: TEKTRONIX 1751, 1781R, or equivalent. Composite video monitor. Extension board: EX-377 (SONY part No. J-6269-810-A). 75 Z terminators (5 pcs.). Cleaning tape: BCT-5CLN (SONY standard products). Alignment tapesFor DNW-A100/A50/A45: CR5-1B (SONY part No. 8-960-096-41) andCR5-2A (SONY part No. 8-960-097-44)For DNW-A100P/A50P/A45P: CR5-1B PS (SONY part No. 8-960-096-91) andCR5-2A PS (SONY part No. 8-960-098-44)6-7. TBC-23 Board Replacement6-8. TBC-24 Board Replacement