Service Adjustments
Important Notice:
Do not attempt to adjust service adjustments not listed below otherwise it may cause loss of performance and for
correct operation.
3.Decide one item in three items to a fixed value
AGC Adjustment
(Example, let 58 Black BalR be fixed value), select
item of other 2 colors (Example59 Blac, k BalG or
1.Receive PAL-N colour bar pattern.
60 Black BalB) with 2 or 1 key, and adjust to
(ANT Input Level:?62dBV 75 ohms terminated)
produce a normal black and white picture in dark gray
2.Connect a Digital Volt Meter to Tuner-AGC terminal areas with VOLUME + or -key.
(TP-A) and the ground.(Note:At this time, Adjust the other 2 colors data less
than fixed data.)
3.Enter the Service Mode, and select item TDA9885
After adjustment, confirm white balance again by
with 2 or 1 key.
normal picture.
4.Select item Write 1of TDA9885 with 2 or 1 key.
White Balance Adjustment
5.Adjust voltage of Tuner-AGC to become 3.2V?0.3V DC
[ Setting ]
with VOLUME + or -key.
1.Connect a color-bar generator to the external
(composite) video input terminal (AV1 or AV3), and
input a White Pattern (90%).
TDA9885FE
2.Set the television to following conditions:
Picture Mode: Dynamic
Write110
Pre-heating Time: More than 10 minutes
Item No.Data Value [ White Balance Adjustment ]
1.Enter the Service Mode, and select item Other�O
Black Balance Adjustmentwith 2 or 1 key, then press the VOLUME + or - key
to enter the Sub menu.
[ Setting ]
1.Connect a color-bar generator to the external
Adjustment Item:
(composite) video input terminal (AV1 or AV3 terminal),
No. 55 White Balance R
and input a dark gray pattern (10% white).
No. 56 White Balance G
No. 57 White Balance B
2.Set the television to following conditions:
Picture Mode: Dynamic2.Set 55 White BalR, 56 White BalGand 57 White BalB
Pre-heating Time: More than 10 minutesvalue to O32� Vwith OLUME + or - key.
[ Black Balance Adjustment ]
1.Enter the Service Mode, and select item Other�O
55White BalR32
with 2 or 1 key, then press the VOLUME + or - key to
enter the Sub menu.
Adjustment Item:
Item No.ItemData Value
No. 58 Black Balance R
No. 59 Black Balance G3.Decide one item in three items to a fixed value
No. 60 Black Balance B(Example, let 55 White BalR be fixed value), select
item of other 2 colors (Example56 White , BalG or57
2.Set 58 Black BalR, 59 Black BalG and 60 Black
White BalB) with 2 or 1 key, and adjust to produce a
BalB value to O255� with VOLUME + or - key.
normal black and white picture in highlight areas with
VOLUME + or - key.
(Note:At this time, Adjust the other 2 colors data less
58Black BalR255than fixed data.)
After adjustment, confirm white balance again by
normal picture.
Item No.ItemData Value
-13- |
ACEC
SANYO
