Focus Adjustment; G2 (Screen) Adjustment; White Balance Adjustment; Sub Bright Adjustment - Sony TRINITRON KV-HW21M80 Service Manual

KV-HW21M80/HW21M83/HW21M80J
2-3.

FOCUS ADJUSTMENT

FOCUS adjustment should be completed before the W/B
adjustment:
1. Receive digital monoscope pattern.
2. Set picture mode: DYNAMIC.
3. Adjust focus VR to obtain a just focus at the center of
the screen.
4. Change receiving signal to white pattern and blue
back.
5. Confirm MAGENTA RING is not noticeable. Incase
magenta ring is obvious, then adjust FOCUS VR to
balance magenta ring and FOCUS.
FOCUS
SCREEN
FLYBACK TRANSFORMER (T802-14")
FLYBACK TRANSFORMER (T801-21")
2-4.

G2 (SCREEN) ADJUSTMENT

1. Set the PICTURE & BRIGHTNESS to STANDARD.
2. Put the Video input mode signal.
3. Connect R,G,B of the C board cathode to
oscilloscope.
4. Adjust Brightness to obtain the cathode value to
value below.
5. Adjust G2 (screen) on the FBT until picture shows
the point before cut off.
RM-W101
165 ± 2VDC
2-5.

WHITE BALANCE ADJUSTMENT

1. Set to Service Mode (Refer Section 3-1:
ADJUSTMENTS WITH COMMANDER)
2. Input white raster signal.
3. Set Picture to <DYNAMIC mode>
4. Select RDRV (02) with
to 25 with and
3
5. Adjust WHBL GDRV (03) and BDRV (04) with
and adjust the data with
4
balance in Highlight condition.
6. Write into the memory by pressing [MUTING] then
7. Adjust WHBL BKOR (00) and BKOG (01) with
and adjust the level with
4
balance cut-off condition.
8. Write into memory by pressing [MUTING] then
9. US model need to apply only for colour temperature
in Neutral.
2-6.

SUB BRIGHT ADJUSTMENT

1. Set to service mode.
2. Brightness set to 50%, Picture....Minimum
3. Select WHBL SBRT (10) with
SBRT (10) data with
from right dimly lit.
4. Write into the memory by pressing [MUTING] then
5. GA models C/O: 20 IRE
S/G: 30 IRE
– 12 –
and and fixed the value
1 4
.
6
and for best white
3 6
and for best white
3 6
and and adjust
1 4
and so that the third stripe
3 6
and
1
.
-
and
1
.
-
.
-