Specification - Sampo SME-32DL5 Service Manual

SERVICE MODE ADJUSTMENT
RGB MODE
(1)
ITEM
1. adjustment
(VR731)
2. High voltage adjustment
(VR691)
3. H-Center adjustment
(VR601)
4. Trapezoid adjustment
(under factory adjustment mode)
5. Geometry adjustment
(under factory adjustment mode)
6. V-Linear adjustment
(under factory adjustment mode)
7. H-size adjustment (RGB mode)
(under factory adjustment mode)
ADJUSTMENT PROCEDURE.
1. Set to RGB mode.
2. Receive all white pattern (H:31.47K V:60Hz 640X480
mode).
3. Connect DC Volt-meter between cathode of D753 and
ground.
Adjust VR731 for 210V± ± ± ± 0.5V output.
4.
1. Connect HV meter.
2. Set to RGB mode. (H:31.47K V:60Hz 640X480 mode).
3. Receive CROSS HATCH pattern.
4. Set contrast and bright to standard.(Recall value)
Adjust VR691 to let the high voltage be 31± ± ± ± 0.5KV.
5.
1. Set to RGB mode.
2. Receive CROSS HATCH pattern (H:43.27K V:85Hz 640X480
mode).
3. Adjust VR601 to let the raster be located at center of CRT.
1. Set to RGB mode.(have nine mode)
2. Receive CROSS HATCH pattern
3. Entry the second item of factory adjustment.
4. Find the trapezoid item and adjust the trapezoid to be
best.
1. Set to RGB mode. .(have nine mode)
2. Receive CROSS HATCH pattern
3. Entry the item 2 of factory setting to select parallelogram
item to adjust the parallelogram to be best.
1. Set to RGB mode.
2. Receive CROSS HATCH pattern (H:31.47K V:60Hz 640X480
mode).
3. Entry item 2 and find V-Linearity adjustment of factory
setting to adjust the V-linearity to be best.
1. Set to RGB mode.
2. Receive CROSS HATCH pattern (we have nine main
modes, please see the specification of CHROMA-2135
generator pattern).
3. Entry the factory adjustment item 2 to choice the H-size
adjustment.
4. Use the adjustment to let the H-size meet the specification
( 620mm for all main modes )
3-7
VER1.0