Sony DNW-A100 Maintenance Manual page 48

1-16. Installation of BKDW-505/506
2. Frequency Response Check
(1) Set the output signal of the signal generator to the multi-burst signal.
(2) Check using the waveform monitor that the level of each frequency component is uniform.
If the level is not uniform, perform steps (3) to (8).
0.5 1 2
BKDW-505 (Multi-burst signal/NTSC)
(3) Push S1101 on the SS-63 board so as to enter the maintenance mode.
(4) Select "VIDEO FREQ COMP" of A25: DEC VR.
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Proceed to A25: DEC VR according to page 1-35.
(5) Turn the search dial slowly while pressing the JOG button on the lower control panel until the level
of each frequency component is uniform.
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The data value displayed on the video monitor screen changes.
Turn the search dial while monitoring the change in a level.
(6) After completing the adjustment, push the MENU button once so as to exit "VIDEO FREQ COMP"
of A25: DEC VR.
(7) Select A2F:NV-RAM CONTROL and save the adjusted data in NV-RAM (execute "SAVE ALL
ADJUST DATA").
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Proceed to A2F: NV-RAM CONTROL according to page 1-35.
Check that "Save Complete" is displayed on the video monitor screen.
(8) Push the MENU button on the lower control panel several times so as to exit the maintenance mode.
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3 3.58 4.2 MHz
0.5 1 2 4 4.8 5.8 MHz
BKDW-506 (Multi-burst signal/PAL)
DNW-A100/A50/A45
DNW-A100P/A50P/A45P