Xoceco LC42 – HC63 E LCD TV How to enter the factory mode, software upgrading, adjustments, power board and audio amplifier schematic

 

Method for entering factory menu:

Press “INPUT”, “2”, “5”, ”8” and “0” in turn to enter factory menu; press “CH+” or “CH-” to select adjustment items and press “VOL+” or “VOL-” to adjust value items, press “MENU” repeatedly to exit. Set AGING MODE of the factory menu to ON,
AGING MODE icon will display on the top left of the screen, now you can press “NR” button to enter the factory menu.

Method for software upgrading:

Prepare the software upgrade program and set the software upgrade tool correctly, press CONNECT then power on, the program will upgrade automatically.
After system prompts upgrade success, press EXIT to exit. When REALTEK appear, it means the upgrade is complete, then restart the unit.
Write HDCP KEY
Turn on the PC and set the software tool correctly, click HDCP then turn on the unit, the program will be written automatically. It needs about 5s and after finish, system will prompt upgrade success.
Note: HDCP button can only be pressed one time for one unit.
The power should be off and 5V-STB disappear for 5s then start writing.
Initialization
Enter factory menu, press “CH+” or “CH-” to select adjustment items and press “VOL+” or “VOL-” to enter the sub menu or adjust value items, adjustment items are shown in table

White balance adjustment
white balance adjustment of HDMI
a. Input VG-848 signal to HDMI port: TIMING854 (800x600/60Hz) and 16-level gray scale signal of PAT920. Use color analyzer CA210 to adjust white balance. BBY model should be adjusted from BBY channel first. The unit must be working for above 30 mins to be in a stabler state for adjustment.
b. Enter factory submenu of TEMP ADJUST, Select NORMAL color temperature (9300k), fixed value of G OFF, adjust R OFF and B OFF, let the color coordinate of the third level be (285±8, 293±12) and the brightness be about 3~5nit. Fixed value of G GAIN, adjust R GAIN and B GAIN, let the color coordinate of the converse third level be (285+/-4, 293+/-6). Adjustment R OFF, B OFF, R GAIN and B GAIN repeatedly until the value of the two levels gray-scale are about (285, 293), then set ALL COLOR to ON.

For BBY model, select COOL color temperature (12000k), fixed value of G OFF, adjust R OFF and B OFF, let the color coordinate of the third level be (272 À5, 278 À5) and the brightness be about 3~5nit. Fixed value of G GAIN, adjust R GAIN and B GAIN, let the color coordinate of the converse third level be (272+/-2, 278+/-2). Adjustment R OFF, B OFF, R GAIN and B GAIN repeatedly until the value of the two levels gray-scale are about (272, 278), then set ALL COLOR to ON.
VGA/YPBPR/AV white balance check and correction
a. Input VG-848 signal of VGA to VGA terminal: TIMING854(800x600/60Hz) (PATTERN:CROSS) and auto adjust to full screen, then input PAT948 black/white signal, enter factory menu ADC ADJ, select AUTO COLOR and the system will correct automatically, after finish, it will return to AUTO COLOR menu. Please check the picture and data, if they are abnormal, then the correction is failure and needs to correct again. (abnormal symptom: certain of the data are greatly different from other data or exceed or near 1000).
Input PAT920(16 gray levels), check if the white balance is normal, if not, enter TEMP ADJUST menu and set ALL COLOR to OFF and fine adjust according the method of 3.5.1b)
b. YPBPR check and correction
SD correction: input VG-848 signal of YPBPR to YPBPR terminal and input TIMING968 (480i) PAT968 color bar (see fig2), (color from left to right are white- yellow- cyan- green- purplered- blue- black), enter ADC ADJ submenu, select AUTO COLOR the system will correct automatically, after finish, it will return to AUTO COLOR menu. Please check the picture and data, if they are abnormal, then the correction is failure and needs to correct again.
HD correction: input VG-848 signal of YPBPR to YPBPR terminal and input TIMING976 (720P/60Hz) PAT968 color bar (color from left to right are white- yellow- cyan- green- purple- redblue- black), enter ADC ADJ submenu, select AUTO COLOR the system will correct automatically, after finish, it will return to AUTO COLOR menu. Please check the picture and data, if they are abnormal, then the correction is failure and needs to correct again.

Performance check
TV function
Enter tuning menu → auto search, connect RF-TV terminal with central signal source and check if the picture is normal, if there are channels not found. Check CCD and V-CHIP (for America).
4.2 AV/S, YPbPr jacks Input AV/S, YPbPr/YCbCr HD signal, check if it is normal.
4.3 VGA jack
Connect VGA jack, input 640 x 480/60Hz standard signal and check if the display is normal.
4.4 HDMI jack
Connect HDMI jack, input 640 x 480/60Hz standard signal and check if the display is normal.
Check if HDCP is normal?
4.5 Check sound channel
Check the speaker and earphone output of each channel.
4.7 Other function check
Check the ON/OFF timer, sleep timer, picture/sound mode, OSD, freeze/mute, USB(option),
MAG.G feature, etc.
4.8 Presetting before ex-factory
Table2 ex-factory setting

Input PAT920(16 gray levels), check if the white balance is normal, if not, enter TEMP ADJUST menu and set ALL COLOR to OFF and fine adjust according the method of 3.5.1b)
c. Input AV signal (PM5518, 8 gray levels, PAL for China and NTSC for America) to VIDEO terminal, check if the white balance is normal, if not, set ALL COLOR to OFF and fine adjust according the method of 3.5.1b)

Software instruction
Table3 software instruction

No.	Code No.	Type	Function	Written before paste	Method	Remarks
NS3	5272540001	PM25VF040	Main CPU program	Yes
NB1	5272402002	24C02N-10SI27	VGA EDID	Ye

Written with instrument like ALL11
Item Setting Item Setting Item Setting

PICTURE MODE	NAUTRAL
SOUND SYSTEM	DK (China), or others (depending the local area)
SOUND MODE	NEWS
NR	WEAK
ZOOM	FULL

 

LANGUAGE	English
TRANSPARENCY	2	VGA/HDMI COLOR TEMP	STANDARD
OSD TIME	10	ANTENNA	CATV

4.6 Check AV channel
Check if AV OUT is normal?
Enter factory menu and select RESET, then the unit will be preset before ex-factory. The process must be executed after the whole adjustment in factory.
Setting as follow without specified requirement.

Power supply (SMPS) schematic

Audio amplifier schematic