Samsung VP-A30 Service Manual page 45

5-2-4 (b) ADJUSTMENT
Note :
1. From this point forward, the structure of every adjustment is as follows.
2. See page 5-26 for the location of test points and adjustments.
Step Adjustment Item
1. Mode and input signal
2. Test point
3. Result and Remarks
1. PLL
1) Color bar
2) Connect an oscilloscope probe to PLL
3) Press the "DATE/TIME(MODE UP)/TITLE
(MODE DOWN)" button so that the OSD state
is "8 PLL EPR:XX EVR:XX"
4) Adjust the "C/RESET(DATA UP)/Z/RTN
(DATA DOWN)" button so that RPD level is
DC1.8+-0.1Vp-p.
5) Be sure to press the "MENU/ENTER(CON-
FIRM)" button to memorize setting.
6) The OSD shows "OK"
2. Brightness
1) Color bar.
2) G-OUT.
3) Connect an oscilloscope probe to G-OUT.
4) Press the "DATE/TIME(MODE UP)/TITLE
(MODE DOWN)" button so that the OSD state
is "2 BRIGHT EPR:XX EVR:XX"
5) Adjust the "C/RESET(DATA UP)/Z/RTN
(DATA DOWN)" button so that bright(Green)
level is 8.0Vp-p (pedestal to pedestal).
6) Be sure to press the "MENU/ENTER(CON-
FIRM)" button to memorize setting.
7) The OSD shows "O.K"
Samsung Electronics
ADJ. point
1.8V
3. R-Sub Brightness
1) Color bar
2) R-OUT
3) Connect an oscilloscope probe to R-OUT.
4) Press the "DATE/TIME(MODE UP)/TITLE
(MODE DOWN)" button so that the OSD state
is "4 R SUB EPR:XX EVR:XX"
5) Adjust the "C/RESET(DATA UP)/Z/RTN
(DATA DOWN)" button so that R-OUT(Red)
level is 8.0Vp-p (pedestal to pedestal).
6) Be sure to press the "MENU/ENTER(CON-
FIRM)" button to memorize setting.
7) The OSD shows "O.K"
Alignment and Adjustment
8.0V
(PEDESTAL TO
PEDESTAL)
8.0V
(PEDESTAL TO
PEDESTAL)
5-27