– 14 –
KV-DA29M81
RM-W105
5-3. FOCUS ADJUSTMENT
Note
Focus adjustment should be completed before W/B adjustment.
1. Receive digital monoscope pattern.
2. Set PIC MODE to "STANDARD".
3. Adjust FOCUS VR so that the center of the screen becomes
just focus.
4. Change the receiving signal to white pattern and blue back.
5. Confirm MAGENTA RING is not noticeable. In case
MAGENTA RING is obvious, adjust FOCUS VR to balance
between MAGENTA RING and FOCUS adjustment.
5-4. NECK ASSY TWIST ADJUSTMENT
1. Receive dot/hatch pattern DRC-MF, DRC1250, DYNAMIC.
2. Turn FOCUS VR fully counter-clockwise.
3. Confirm the dot shape at the screen center. (Fig. 5-4)
4. Resume FOCUS VR.
Note
In case of turning NECK ASSY, loosen the screw 3 turns. Do not
move the position.
5-5. G2 (SCREEN) AND WHITE BALANCE
ADJUSTMENT
1. G2 (SCREEN) ADJUSTMENT
1. Set the PICTURE and BRIGHTNESS to normal.
2. Put to any signal input mode without signals.
MCP : 001 RON
3. Connect R, G and B of the C board cathode to the
oscilloscope.
4. Adjust BRIGHTNESS to obtain the cathode voltage to the
value below.
5. Whilst watching the picture, adjust the screen VR [RV9002]
located on the flyback transformer to the point just before the
retrace lines disappear (to the point before cut-off).
2. WHITE BALANCE ADJUSTMENT
1. Set picture to Dynamic Mode.
2.
[SADJ]
COL 60
t
00.
3. Fixed RDRV
t
41.
4. Fixed RCUT
t
31.
5. Adjust for highlight GDRV & BDRV.
6. Adjust for cut-off GCUT & BCUT.
1. Set picture to Dynamic Mode.
2. SADJ COL 00
t
100.
3. Adjust for cut-off CBOF & CROF.
Set back SADJ COL
t
60 (original condition).
FLYBACK TRANSFORMER (T6803)
Focus
G2 Adjustment
Lead Assy,
Focus
0 V
170v
±
2 (VDC)
Fix a Permaloy Assy Correction
to the misconverged areas
a to d : Permaloy Assy Correction
OK
Turn NECK ASSY clockwise.
Turn NECK ASSY counter clockwise.
Fig. 5-4
a
b
c
d
Permalloy assembly