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Red Registration Adjustment; Blue Registration Adjustment - Sony RA-3B Service Manual

Color rear video projector.
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5. Press the 9 button on the remote commander to return to the coarse
adjustment mode. If you need to return to the fi ne mode, just press
the 9 button again, and the cursor will change from white to green
or blue or red.
6. After the green lines are all straight, press "MUTING" and then
"ENTER" to save the adjustment data.

2-12. RED REGISTRATION ADJUSTMENT

RED CENTER, SKEW
1. Cover the blue picture lens with a lens cap to allow green and red to
show (or use the method shown in the note below).
2. Press the 3 button on the remote commander to change the GRN
mode to the RED mode.
3. Select RED CENT or RED SKEW with the 1 and 4 buttons on the
remote commander and adjust while tracking each one alternately.
4. Adjust the red crosshatch lines using the joystick arrow buttons, so
that they are straight vertically and horizontally, and overlap the green
lines.
5. Press "MUTING" and then "ENTER" to save the adjustment data.
Note: If lens caps are unavailable, you can cut off the unnecessary color
beams in the service mode by individually changing the data from "1"
to "0" in category VPNT, item 28 RON (red), item 29 GON (green), or
item 30 BON (blue).
RED SIZE, LINEARITY
1. Alternately select RED SIZE (vertically and horizontally) or RED LIN
(vertically) with the 1 and 4 buttons on the remote commander and
adjust while tracking each one alternately.
2. Adjust the red crosshatch lines with the joystick on the remote
commander until they are straight vertically and horizontally and they
overlap the green lines.
RED KEY, PINCUSHION
1. Select RED KEY or PINCUSHION with the 1 and 4 buttons on the
remote commander and adjust each one while tracking each other.
2. Using the joystick arrow buttons, adjust the red crosshatch lines so
that they are straight horizontally and vertically, and they overlap the
green lines.
Note: These are required when either severe mis-adjustment or data
loss occurred.
3. Press "MUTING" and then "ENTER" to save the adjustment data.
FINE ADJUSTMENT
1. Press the 9 button on the remote commander to shift to the fi ne
adjustment mode; the red cursor appears at the center of the screen.
If the cursor is not red, press the 3 button until it is red.
2. Use the 1 and 4 buttons on the remote commander to move the
cursor to each area of the screen you want to adjust.
3. Press "MUTING" and then "ENTER" to save the adjustment data.

2-13. BLUE REGISTRATION ADJUSTMENT

1. Remove the lens cap from the blue picture lens to show all colors (or
use the method shown in the note above to turn on all 3 CRTs).
2. Press the 3 button on the remote commander to shift the RED mode
to the BLU mode.
3. Adjust BLU CENT, BLU SKEW, BLU SIZE, BLU LIN, BLU KEY and
BLU PIN the same way as the red registration adjustment.
FINAL CHECK- IMPORTANT
This must be performed before leaving the service mode!
1. Store the fi nal adjustment data by pressing MUTING and then
ENTER.
2. Press the FLASH FOCUS button on the front panel.
3. If an error message appears, refer to the following.
If an error code is displayed after the set has been correctly adjusted,
check the following items: position, tilt and sizing. If any of these
adjustments are off, even slightly, the auto-registration pattern will not
hit the four sensors properly. This occurs when the internal generator
patterns are being fl ashed on the screen for the sensors to read.
Therefore, auto registration (called auto-focus) cannot operate properly,
causing an error code to be displayed. In order for this function to operate
properly, position, tilt and size must be adjusted properly.
Note: In case of replacing CRTs, adjust the set-up adjustments (items
2-1 to 2-8) and the registration adjustment (item 2-10). In the case
of replacing multiple CRTs at the same time, replace and adjust them
individually.
— 23 —
KP- 43T90 / 48V90 / 53V90 / 61V90

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