10, Y Fm Carrier Frequency Adjustment (Vs-93 Board); Deviation Adjustment (Vs-93 Board) -:+++++++Ss+Eeeeeeeeee - Sony Video8 Handycam CCD-TR71 Service Manual

10. Y FM Carrier Frequency Adjustment (VS-93 board)
[Signal __[Nosignal —S—S—*d
PAdjutnentPage [DS
Adjustment Address | 4F (Y FM CARRIER)
| 4.38 + 0.04 MHz
Specified Value
Adjusting method:
1) Release the protect.
Page: 1, address: 00, data: 01
2) Change the data of page: D, address: 4F, and adjust so that
the Y FM carrier frequency becomes the specified value.
3) Press the PAUSE button of the adjusting remote control
unit.
4) Perform "Deviation Adjustment".
Pin © of IC003 waveform
4.38 + 0.04 MHz
wii
Approximately
400 mVp-p
me
a = 0.228 usec
Fig. 9-17.
11. Deviation Adjustment (VS-93 board)
[Mode ____—_—(Resordand payback
Padhwsinen Page [DS
Note: Check that "Emphasis Input Level Adjustment", "PB Y
Level Adjustment" and "Y FM Carrier Frequency
Adjustment" have been completed.
Adjusting method:
1) Release the protect.
Page: 1, address: 00, data: 01
2) Record the color bar signal.
3) Playback the recorded signal.
4) Check the playback signal level (A).
Specification:A=0.50 + 0.025V
5) If the specification is not satisfied, change the data of page:
D, address: 51, and repeat steps 2) to 4).
Playback signal level Changing the data
When smaller than the specified value | —sTIncrease
When bigger than the specified value
6) Press the PAUSE button of the adjusting remote control
unit.
6 White (100%)
Fig. 9-18.
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