Sony DCR-TRV10 Service Manual - Page 130

VIDEO SYSTEM ADJUSTMENTS, 4-1. Base Band Block Adjustments, Chroma BPF fo Adjustment VC-217 board - pass through

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3-4. VIDEO SYSTEM ADJUSTMENTS Before perform the video system adjustments, check that the specified value of "36 MHz Origin Oscillation Adjustment" of "CAMERA SYSTEM ADJUSTMENT" is satisfied. 3-4-1. Base Band Block Adjustments 1. Chroma BPF fo Adjustment (VC-217 board) Set the center frequency of IC1402 chroma band-pass filter. Mode VTR stop Signal No signal Measurement Point CH1: Chroma signal terminal of S VIDEO jack (75 Ω terminated) CH2: Y signal terminal of S VIDEO jack (75 Ω terminated) Measuring Instrument Oscilloscope Adjustment Page C Adjustment Address 2B Specified Value A = 100mVp-p or less B = 200mVp-p or more Switch setting: DISPLAY (Menu display V-OUT/LCD DISPLAY (CK-84 board ON Adjusting method: 1) Check that the burst signal (B) is output to the chroma signal terminal of S VIDEO jack. 2) Select page: 0, address: 01, and set data: 01. 3) Select page: 3, address: 0C, set data: 04, and press the PAUSE button of the adjustment remote commander. 4) Select page: C, address: 2B, and change the data for minimum amplitude of the burst signal level (A). (The data of address: 2B, should be "00" to "07".) 5) Press the PAUSE button of the adjustment remote commander. 6) Select page: 3, address: 0C, set data: 00, and press the PAUSE button of the adjustment remote commander. 6) Check that the burst signal level (B) is satisfied the specified value. 7) Select page: 0, address: 01, and set data: 00. When the data pf page: 3, address: 0C, is 04: A CH1 2. S VIDEO OUT Y Level Adjustment (VC-217 board) Mode Subject Measurement Point Measuring Instrument Adjustment Page Adjustment Address Specified Value Camera Arbitrary Y signal terminal of S VIDEO jack (75 Ω terminated) Oscilloscope C 25 A = 1000 ± 14mV Adjusting method: 1) Select page: 0, address: 01, and set data: 01. 2) Select page: 2, address: 35. After note down the data of this address, set data: 01 to the address. 3) Select page: 3, address: 0C, set data: 02, and press the PAUSE button of the adjustment remote commander. 4) Select page: C, address: 25, change the data and set theY signal level (A) to the specified value. 5) Press the PAUSE button of the adjustment remote commander. 6) Select page: 3, address: 0C, set data: 00, and press the PAUSE button of the adjustment remote commander. 7) Select page: 2, address: 35. and set the data that is noted down at step 2). 8) Select page: 0, address: 01, and set data: 00. Center of luminance line A H Fig. 5-3-7. CH2 H Fig. 5-3-5. When the data pf page: 3, address: 0C, is 04: CH1 B H Fig. 5-3-6. 5-44

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5-44
3-4.
VIDEO SYSTEM ADJUSTMENTS
Before perform the video system adjustments, check that the
specified value of “36 MHz Origin Oscillation Adjustment” of
“CAMERA SYSTEM ADJUSTMENT” is satisfied.
3-4-1. Base Band Block Adjustments
1. Chroma BPF fo Adjustment (VC-217 board)
Set the center frequency of IC1402 chroma band-pass filter.
Mode
VTR stop
Signal
No signal
Measurement Point
CH1: Chroma signal terminal of
S VIDEO jack (75
Ω
terminated)
CH2: Y signal terminal of S VIDEO
jack (75
Ω
terminated)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
2B
Specified Value
A = 100mVp-p or less
B = 200mVp-p or more
Switch setting:
DISPLAY (Menu display)
............................
V-OUT/LCD
DISPLAY (CK-84 board)
............................................
ON
Adjusting method:
1)
Check that the burst signal (B) is output to the chroma signal
terminal of S VIDEO jack.
2)
Select page: 0, address: 01, and set data: 01.
3)
Select page: 3, address: 0C, set data: 04, and press the PAUSE
button of the adjustment remote commander.
4)
Select page: C, address: 2B, and change the data for minimum
amplitude of the burst signal level (A).
(The data of address: 2B, should be “00” to “07”.)
5)
Press the PAUSE button of the adjustment remote commander.
6)
Select page: 3, address: 0C, set data: 00, and press the PAUSE
button of the adjustment remote commander.
6)
Check that the burst signal level (B) is satisfied the specified
value.
7)
Select page: 0, address: 01, and set data: 00.
2. S VIDEO OUT Y Level Adjustment (VC-217 board)
Mode
Camera
Subject
Arbitrary
Measurement Point
Y signal terminal of S VIDEO jack
(75
Ω
terminated)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
25
Specified Value
A = 1000 ± 14mV
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2)
Select page: 2, address: 35. After note down the data of this
address, set data: 01 to the address.
3)
Select page: 3, address: 0C, set data: 02, and press the PAUSE
button of the adjustment remote commander.
4)
Select page: C, address: 25, change the data and set the Y signal
level (A) to the specified value.
5)
Press the PAUSE button of the adjustment remote commander.
6)
Select page: 3, address: 0C, set data: 00, and press the PAUSE
button of the adjustment remote commander.
7)
Select page: 2, address: 35. and set the data that is noted down
at step 2).
8)
Select page: 0, address: 01, and set data: 00.
Fig. 5-3-7.
CH1
CH2
A
H
H
CH1
B
Fig. 5-3-5.
Fig. 5-3-6.
H
Center of luminance line
A
When the data pf page: 3, address: 0C, is 04:
When the data pf page: 3, address: 0C, is 04: