No. 51797B
AV-27D502
3
SERVICE ADJUSTMENTS
ADJUSTMENT STEP
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PIP VCO [
ADDITION
]
Item
Measuring
instrument
Test point
Adjustment part
Description
PIP VCO
adjustment
PIP VCO transf.
(T111)
[PIP]
1. Set the PIP mode.
2. Receive the ordinary broadcast signal.
3. Select “TU2 VCO” of the SERVICE MENU.
4. Confirm [SYNC] to “YES”.
5. Turn the PIP VCO transformer to where “REFERENCE LEVEL”
characters are yellow.
✻
When finished, confirm [SYNC] to “YES” again.
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FOCUS [
CHANGE
]
Item
Measuring
instrument
Test point
Adjustment part
Description
FOCUS
adjustment
Signal
generator
FOCUS VR
[HVT]
!
Set the VIDEO STATUS to “STANDARD”.
!
When makes difference by FOCUS adjustment, should be
recommending CONVERGENCE and PURITY adjustments.
1. Receive a crosshatch signal.
2. White looking at the screen center, adjust the FOCUS VR so that
be clear and in fine detail.
3. Make sure that the picture is in focus even when the screen gets
darkness.
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V POSITION & V SIZE [
CHANGE
]
Item
Measuring
instrument
Test point
Adjustment part
Description
V POSITION &
V SIZE
adjustment
Signal
generator
V CENTER SW
(S421)
No.71 : V POSI
No.66 : V SIZE
No.78 : TRAPEZ
No.65 : V LIN
1. Receive a crosshatch signal.
2. Set the No.71: V POSI to “0”.
3. Adjust the V CENTER SW and No.66: V SIZE to the vertical size
is 92%.
4. Confirm the vertical lines to be straight. If it is not straight, adjust
to be straight at the No.78: TRAPEZ.
5. Confirm upper and lower of the screen. If it is not symmetrical,
adjust to be symmetrical at the No.65: V LIN.
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SUB COLOR [
CHANGE
]
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SUB TINT [
CHANGE
]
Model
A [V
W-B
]
Model
B [V
W-B
]
AV-27D502
/AS
+6V
AV-27D502
/AS
+9V
AV-27D502
/AR
+7V
AV-27D502
/AR
+13V
TU2 VCO
HIGH LEVEL
REFERENCE LEVEL
LOW LEVEL
SYNC :
YES
PIP SCREEN
These models (with A mark) were changed chassis from AV-27D502 (AC chassis).
This content describes only items which differ from those of the base models SERVICE MANUAL.
Please refer to the AV-27D502 SERVICE MANUAL (No.51797 issued Mar. 2001).
Содержание AV 27D502
Страница 62: ...AV 27D502 AV 27D502 No 51797 No 51797 TOP FRONT AV SELECTOR PWB PATTERN 2 20 2 19 ...
Страница 63: ...AV 27D502 AV 27D502 No 51797 No 51797 CRT SOCKET PIP TOP FRONT TOP CRT SOCKET AND PIP PWB PATTERNS 2 21 2 22 ...
Страница 84: ...AV 27D502 No 51797 43 ...
Страница 130: ...Troubleshooting 46 ...
Страница 135: ...Specifications 51 Specifications subject to change without notice ...