Sony CCD-TR918E, CCD-TR717E, CCD-TR417E, CCD-TR427E, CCD-TR617E, Service Manual, Page: 160 / 214

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7-3. REC AFM Current Adjustment (VC-234 board)
Set the recording levels of the REC AFM signal. If the level is too
low, the audio S/N will be deteriorated. If too high, color beets will
be produced on the self-recording / playback image.
Mode VTR recording (SP mode)
Signal No signal
Measurement Point Pin
0
of CN982 (REC RF)
Measuring Instrument Oscilloscope
(20 MHz BW LIMIT: OFF)
Adjustment Page F
Adjustment Address 71
Specified Value A= (REC Chroma signal level)
×
0.309
± 0.9mV (Note2)
Note1: Only for the STEREO model, do not insert any plug into the
AUDIO (R) terminal.
Note2: REC Chroma signal level is noted down at step 7) of “REC C
Current Check”.
Adjusting method:
1)
Insert a Hi8 ME tape, and set to recording mode.
2) Select page: 0, address: 01, and set data: 01.
3) Select page: E, address: FB, set data: 07, and press the PAUSE
button of the adjustment remote commander.
4) Select page: F, address: 71, change the data and set the REC
AFM signal level (A) to the specified value.
5) Press the PAUSE button of the adjustment remote commander.
6) Select page: E, address: FB, set data: 04, and press the PAUSE
button.
7) Select page: 0, address: 01, and set data: 00.
8) Perform “Processing after completed adjustment only for the
PLAYER model”.
7-4. Processing after completed adjustment only for
the PLAYER model
1) Select page: 0, address: 01, and set data: 01.
2) Only for the PLAYER model, select page: D, address: 14, and
set the data memorized at step 2) of “Preparations only for the
PLAYER model”.
3) Press the PAUSE button.
4) Only for the PLAYER model, select page: D, address: 15, and
set the data memorized at step 3) of “Preparations only for the
PLAYER model”.
5) Press the PAUSE button.
6) Select page: 0, address: 01, and set data: 00.
A
0.67
µ
sec
Center of the luminance line width
Fig. 5-3-13.