— 24 —
KV-24FV12/25FV12/25FV12A/25FV12C
5. Adjust the values of SBRT with
and
to obtain a faintly
visible crosshatch.
6. Press
then
to save into the memory.
Sub Hue, Sub Color Adjustment (SHUE, SCOL)
1. Input a color-bar signal and set level to 75%.
2. Activate the Service Adjustment Mode.
3. Select the DCOL item and set the value to “0”.
4. Connect an oscilloscope probe to CB Board, CN705
Pin
(Blue Out).
5. Select the SHUE and SCOL item with
and
.
6. While showing the SHUE item, adjust the waveform with
and
until the second and third bars show the same level
(V2 = V3 < 0.1 Vp-p).
7. While showing the SCOL item, adjust the waveform with
and
until the first and fourth bars show the same level (V1
= V4 < 0.1 Vp-p).
8. Input RF PAL-M and PAL-N color-bar and repeat steps 1-7
for each. (KV-25FV12A ONLY).
V1
V2
V3
V4
8. Select the DCOL item and reset to 1.
9. Press
then
to save into the memory.
V. Size Adjustment (VSIZ)
1. Input a crosshatch signal.
2. Activate the Service Adjustment Mode.
3. Select the VSIZ item with
and
.
4. Adjust value of VPOS with
and
for the best vertical
center.
5. Press
then
to save into the memory.
V. Center Adjustment (VPOS)
Perform this adjustment after performing H. Frequency
(Free Run) Check.
1. Input a crosshatch signal.
2. Activate the Service Adjustment Mode.
3. Select the VPOS item with
and
.
4. Adjust value of VPOS with
and
for the best vertical
center.
5. Press
then
to save into the memory.
4. Set both GON and BON items. Using
and
;
set each to the following values. Leave RON set to “1”.
SERVICE RON 1
1: ON
0: OFF
R ON:
ON
(1)
G ON:
OFF (0)
B ON:
OFF (0)
5. Select the DCOL item and set it to “0”.
6. Connect an oscilloscope probe to CB Board, J701 pin
(KR) (RED OUT).
7. Select RDRV with
and
.
8. Adjust the value of RDRV with
and
for
92.0 ± 2 VDC.
90.2 ± 2 VDC
9. Reset the item DCOL to “1”.
10. Reset GON and BON values to “1”.
R ON:
ON
(1)
G ON:
ON
(1)
B ON:
ON
(1)
11. Reset Picture and Color to normal values:
PICTURE:
MAX
COLOR:
CENTER
12. Press
then
to save into the memory.
Display Position Adjustment (DISP)
1. Input a color-bar signal.
2. Set to Service Adjustment Mode.
3. Select DISP with
and
.
4. Adjust values of DISP with
and
to adjust characters
to the center.
5. Write to memory by pressing
then
.
6. Check to see if the text is displayed on the screen.
SERVICE DISP 15
Sub Bright Adjustment (SBRT)
1. Input a monoscope signal.
2. Activate the Service Adjustment Mode.
3. Set the PICTURE and BRIGHTNESS to minimum.
4. Select the SBRT item with
and
.
