Sony KV-27FS120 - FD Trinitron WEGA Flat Screen TV, Service Manual

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KV-27FA310/27FS120/29FA310/29FS120
KV-27FA310/27FS120/29FA310/29FS120
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 20
IRE mark, after that in3 steps.
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 CW Board, JW7408 (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 + 2 Step.
V1 V2 V3 V4
8. Press MUTING then ENTER 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 1 and 4 .
4. Adjust value of VSIZ with 3 and 6 for the best vertical size.
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.
H. Size Adjustment (HSIZ)
1. Input a monoscope signal.
2. Activate the Service Adjustment Mode.
3. Select HSIZ with 1 and 4 .
4. Adjust with 3 and 6 for the best horizontal size.
5. Press MUTING then ENTER to save into the memory.
V. Linearity (VLIN), V. Correction (SCOR), PIN
Amp (PAMP), and Horizontal Trapezoid
(HTRP) Adjustments
1. Input a crosshatch signal.
2. Activate the Service Adjustment Mode.
3. Select VLIN, SCOR, PAMP, and HTRP with with 1 and 4 .
4. Adjust with 3 and 6 for the best horizontal size.
5. Press MUTING then ENTER to save into the memory.
V LINEARITY (VLIN)
V CORRECTION (SCOR)
PIN AMP (PAMP)
HORIZONTAL TRAPEZOID (HTRP)