Sony DCR-IP45 - Micromv Digital Camcorder, Service Manual

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5-58
DCR-IP45/IP45E/IP55/IP55E
3-4. VIDEO SYSTEM ADJUSTMENTS
Before perform the video system adjustments, check that the
specified value of “54MHz/66MHz Origin Oscillation Adjustment”
of “CAMERA SYSTEM ADJUSTMENT” is satisfied.
And check that the data of page: 0, address: 10 is “00”. If not, set
data: 00 to this address.
Note: NTSC model: DCR-IP45/IP55
PAL model: DCR-IP45E/IP55E
Switch setting:
POWER .................................................................. CAMERA
DEMO MODE (Menu setting) ........................................ OFF
1. Chroma BPF fo Adjustment (DI-085 Board)
Set the center frequency of the chroma band-pass filter of IC2401.
Mode Camera
Subject All black (Cover the lens with the lens
cap)
Measurement Point CH1: Chroma signal terminal of S
VIDEO plug of A/V jack (75
Ω
terminated)
CH2: Y signal terminal of S VIDEO
plug of A/V jack (75
Ω
terminated)
Measuring Instrument Oscilloscope
Adjustment Page C
Adjustment Address 3C
Specified Value A = Minimum
Note1:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data Procedure
1 0 01 01 Set the data.
2 3 00 12 Set the data, and press PAUSE
button.
3 C 3C Change the data for minimum
amplitude of the burst signal
level (A).
(The data should be “00” to “07”.)
4 C 3C Press PAUSE button.
5 3 00 00 Set the data, and press PAUSE
button.
6 0 01 00 Set the data.
2. S VIDEO OUT Y Level Adjustment (VC-291 Board)
Mode Camera
Subject Arbitrary
Measurement Point Y signal terminal of S VIDEO plug of
A/V jack (75
Ω
terminated)
Measuring Instrument Oscilloscope
Adjustment Page C
Adjustment Address 94
Specified Value A = 714
±
14mV (NTSC)
A = 700
±
14mV (PAL)
Note1:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data Procedure
1 0 01 01 Set the data.
2 3 02 FE Set the data.
3 3 00 07 Set the data, and press PAUSE
button.
4 3 07 Check that bit1 of the data
changes to “1”. (Note2)
5 C 94 Change the data and set the Y
signal level (A) to the specified
value.
6 C 94 Press PAUSE button.
7 3 00 00 Set the data, and press PAUSE
button.
8 3 02 00 Set the data.
9 0 01 00 Set the data.
Note2: For the bit values, refer to “5-4. SERVICE MODE”, “4-3. 3. Bit
value discrimination”.
Fig. 5-3-5.
Fig. 5-3-6.
CH1
CH2
A
H
H
Center of luminance line
A