Samsung CT20F3FNT, Service Manual

Page: 16 / 36

Alignment and Adjustments
Samsung Electronics 4-1
4. Alignment and Adjustments
4-1 Preadjustment
4-1-1 Factory Mode
1. Do not attempt these adjustments in the Video
Mode.
2. The Factory Mode adjustments are necessary
when either the EEPROM (IC902) or the CRT
is replaced.
3. Do not tamper with the “Adjustment” screen
of the Factory Mode menu. This screen is
intended only for factory use.
4-1-2 When EEPROM (IC902) Is Replaced
1. When IC902 is replaced all adjustment data
revert to initial values. It is necessary to
re-program this data.
2. After IC902 is replaced, warm up the TV for
10 seconds.
4-1-3 When CRT Is Replaced
1. Make the following adjustments AFTER set-
ting up after setting up purity and conver-
gence :
White Balance
Sub-Brightness
Vertical Center
Vertical Size
Horizontal Size
Fail Safe (This adjustment must be the last
step).
2. If the EEPROM or CRT is replaced and set SC
as 20(factory mode).
4-2 Factory/Service Mode
4-2-1 Procedure for the “Adjustment” Mode
1. This mode uses the standard remote control.
The Service Mode is activated by entering the
following remote-control sequence :
(1) DISPLAY
→
FACTORY.
(2) STAND-BY
→
MUTE
→
1
→
8
→
2
→
POWER ON.
2. The “SERVICE (FACTORY)” message will be
displayed. The Service Mode has four compo-
nents: ADJUST, OPTION , G2-ADJUST and
RESET.
3. Access the Adjustment Mode by pressing the
“VOLUME” keys ( Up or Down). The adjust-
ment parameters are listed in the accompany-
ing table, and selected by pressing the CHAN-
NEL keys ( , ).
4. Selection sequences for the all system:
DOWN or UP key:
SCT>SBT>BLR>BLB>RG>GG>BG>VSL>VS>
VA>HS>SC>CDL>STT>AKB>FS>NDL>
LBS>NSR>SCBT>VOL>CAP>HBS>RP00>
RP01>FMWS>AGC1>OMD>SCL>PWL>
MUS>AGC>DSK>DVDB
5. The VOLUME keys increase or decrease the
adjustment values (stored in the
non-volatile memory) when Adjustment Mode
is cancelled.
6. Cancel the Adjustment Mode by re-pressing
the “FACTORY” or “Power OFF” keys.