Color television receiver Samsung CL15K5MNFX/XAP – Schematic, Service mode adjustments

K15D Chassis, CL15K5MNFX/XAP Model – How to enter the factory mode, adjustments, Schematic

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.
 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.

When CRT Is Replaced
1. Make the following adjustments AFTER setting up after setting up purity and convergence
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).

Procedure for the “Adjustment” Mode

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 components: ADJUST, OPTION , G2-ADJUST and RESET.
3. Access the Adjustment Mode by pressing the
“VOLUME” keys ( Up or Down). The adjustment parameters are listed in the accompanying table, and selected by pressing the CHANNEL keys Up/Dn.

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.

Cathode Voltage Adjustment (Screen Adjustment)
1. Connect CRT socket pin GK to an oscilloscope probe.
2. Input a gray scale pattern. (Use a pattern generator, PM5518)
3. Use the P mode key (on the remote control) for the STANDARD picture.
4. Adjust the Screen VR (on the FBT) so that the voltage on the oscilloscope becomes 125+2.5V

White Balance Adjustment

Warm up the TV for at least 30 minutes in the
Aging Mode (OSD White). This mode is displayed by entering the following sequence:
DISPLAY →FACTORY → FACTORY
2. Input a Toshiba pattern.
(b) Low-Light Adjustment
1. Set SBT to 1.2 fL in the Factory Service
Mode with using CA100.
2. Adjust RG,BG so that the levels are suitable to each local area.
(c) High-Light Adjustment
1. Set SCT to 50FL(13V : 60FL) in the Factory Service Mode with using CA100.

Schematic full