White Balance Adjustment; Text Position Adjustment; Picture Quality Adjustments - Sony KP-EF41ME Service Manual

KP-EF41HK/ME/MN/SN, EF48HK/ME/MN/SN,
KP-EF53HK/ME/MN/SN, EF61HK/ME/MN/SN

5-6. WHITE BALANCE ADJUSTMENT

1. Receive the monoscope signal and adjust the picture qual-
ity with the menu.
2. Adjust service mode S-BRIGHT so that the signal 10 IRE
section barely glows.
3. Receive the all-white pattern signal.
4. Adjust the white balance with service mode G-CUTOFF
and B-CUTOFF.
5. Adjust service mode S-BRIGHT so that the signal 100 IRE
section barely glows.
6. Adjust the white balance with service mode G-DRIVE and
B-DRIVE.
7. Repeatedly adjust the white balance for the minimum and
maximum picture settings.

5-7. TEXT POSITION ADJUSTMENT

1. Receive RF signal with text.
2. Select item 86 (TXH) Text H position adjustment by com-
mander.
3. Adjust H Position of Text.
A

5-8. PICTURE QUALITY ADJUSTMENTS

SUB COLOR ADJUSTMENT (SC1, SC2)
1. Input a PAL color-bar.
2. Set to the following condition:
PICTURE 90%, BRIGHTNESS 50%, COLOR 50%
3. Connect an oscilloscope to the pin 4 (B OUT) of CN405,
AG board.
4. Set to Service Mode and select 35 SC1 with 1 and 4 of the
commander then adjust to VB2=VB3=VB4 with 3 and 6.
→ - of the commander to write the data.
[MUTING]
5. Press
6. Adjust 36 SC2 as step 2 to 5 when receiving NTSC color-
bar.
VB1 VB2
VB2 = VB3 = VB4
RM-871
A = B
B
VB3 VB4
SUB HUE ADJUSTMENT (SH1, SH2)
1. Input a PAL color-bar.
2. Set the following condition:
PICTURE 90%, BRIGHTNESS 50%, COLOR 50%.
3. Connect an oscilloscope to the pin 4 (B OUT) of CN405,
AG board.
4. Select 37 SH1 with 1 and 4 of the commander by setting
to Service Mode and adjust to VB1=VB2=VB3=VB4 with
3 and 6.
5. Select Video1.
6. Input a PAL color-bar, video into video 1.
7. Adjust 38 SH2 as step 2 to 5.
→ - of the commander to write the data.
[MUTING]
8. Press
– 48 –
VB1 VB2 VB3 VB4
VB1 = VB2 = VB3 = VB4