SYMPHONIC CSTL20D6
Service Manual

FIRMWARE RENEWAL MODE
1. Turn the power on and press [EJECT] button on the remote control unit to put the LCD TV/DVD into DVD mode. Then remove the disc. 2. To put the LCD TV/DVD into F/W version up mode, press [9], [8], [7], [6], and [SEARCH MODE] buttons on the remote control unit in that order. Fig. a appears on the screen.
"*******" differs depending on the models.

5. After programming is finished, the disc will be ejected automatically. Fig. e appears on the screen and the checksum will be shown in (*2).
"*******" differ depending on the models.

F/W Version Up Mode VERSION : Completed (*2) SUM : 7ABC

Model No : ******* VERSION : *.** ************.ab7

F/W Version Up Mode

Model No : ******* VERSION : *.**

Please insert a DISC for F/W Version Up.

Fig. e Completed Program Mode Screen
EXIT: SELECT

Fig. a Version Up Mode Screen

6. 7. 8. 9.

3. Insert the disc for version up into the disc slot. 4. The LCD TV/DVD enters the F/W version up mode automatically. Fig. c appears on the screen. If you enter the F/W for different models, �Disc Error� will appear on the screen, then the disc will be ejected automatically.
"*******" differ depending on the models.

At this time, no button is available. Remove the disc. Press [CH. o / p] button on the unit to go to TV mode, or press [POWER] button on the unit to turn the power off. Press [EJECT] button on the remote control unit to put the LCD TV/DVD into DVD mode again. Press [1], [2], [3], [4], and [DISPLAY] buttons on the remote control unit in that order. Fig. g appears on the screen.
"*******" differs depending on the models.

F/W Version Up Mode VERSION : Reading...

Model No : ******* VERSION : *.** ************.ab7

(*1)

MODEL : ******* Version : *.** Region : *

EEPROM CLEAR : CLEAR

EXIT: SELECT

Fig. c Programming Mode Screen

Fig. g

The appearance shown in (*1) of Fig. c is described as follows:
No. 1 2 3 Appearance Reading... Erasing... State Sending files into the memory Erasing previous version data

10.Press [CLEAR] button on the remote control unit. Fig. h appears on the screen.
"*******" differs depending on the models.

Programming... Writing new version data

MODEL : ******* Version : *.** Region : * EEPROM CLEAR : OK

EEPROM CLEAR : CLEAR

EXIT: SELECT

Fig. h

When �OK� appears on the screen, the factory default will be set. Then the firmware renewal mode is complete. 11.To exit this mode, press [CH. o / p] or [SELECT] button to go to TV mode, or press [POWER] button to turn the power off.

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L2550FW