Sony TRINITRON KV-20FS120 Service Manual page 35

Display Position Adjustment (DISP)
1. Input a color-bar signal.
2. Set to Service Adjustment Mode.
3. Select DISP with 1 and 4 .
4. Adjust values of DISP with 3 and 6 to adjust characters to the
center.
5. Press MUTING then ENTER to save into the memory.
6. Check to see if the text is displayed on the screen.
Mode
Category
service micro
Signal
Type
ntsc
vchp
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 1 and 4 .
5. Adjust the values of SBRT with 3 and 6 to obtain a faintly visible
crosshatch.
6. Press MUTING then ENTER to save into the memory.
Sub Hue, Sub Color Adjustment
(SHUE, SCOL)
1. Input color-bar signal at 75%.
2. Activate the Service Adjustment Mode.
3. Set (PIC) to Max and (COL) to 50%.
4. Connect an oscilloscope probe to CV Board, CN301Pin 4 Blue Out.
5. Select the SHUE and SCOL item with 1 and 4 .
6. While showing the SHUE item, adjust the waveform with 3 and 6
until the second and third bars show the same level
(V2 = V3 < 0.15Vp-p). Set Sub Hue -2 Step.
7. While showing the SCOL item, adjust the waveform with 3 and 6
until the fi rst and fourth bars show the same level
(V1 = V4 < 0.15Vp-p). Set Sub Col +3 Step.
V1 V2 V3 V4
8. Press MUTING then ENTER to save into the memory.
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
Display Item
Item Data
disp 48
00000000 00000000
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
V. Size Adjustment (VSIZ)
1. Input a crosshatch signal.
2. Activate the Service Adjustment Mode.
3. Select the VSIZ item with 1 and 4 .
4. Adjust value of VPOS with 1 and 4 for the best vertical center.
5. Press MUTING then ENTER 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 1 and 4 .
4. Adjust value of VPOS with 3 and 6 for the best vertical center.
5. Press MUTING then ENTER to save into the memory.
H. Center Adjustment (HPOS)
Perform this adjustment after performing H. Frequency
(Free Run) Check.
1. Input a crosshatch signal.
2. Activate the Service Adjustment Mode.
3. Select the HPOS item with 1 and 4 .
4. Adjust the value of HPOS with 3 and 6 for the best horizontal
center.
5. Press MUTING then ENTER to save into the memory.
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