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SIF PRESCALE
SIF
RES
ALE
BACK LIGHT
BA
K LIG
T
ALL COLOR
ISP
NO STANDY
INIT VOLUME
INIT CHANNEL
INIT SRC
EEPROM-MEMORAY
RECALL
3.2 Adjustment for AFT and AGC of IF channel in TV
3.2.1 IF AFT adjustment
Disconnect J601(B face), input 80dB 38.9MHz PAL signal to the pole of J601 near the socket,
adjust L604 to value 1.65V of TP602, enter the factory menu, set TDA4470 from BG to LL and input
80dB 33.9MHz SECAM signal, adjust RP602 to value 1.65V of TP602, then weld J601.
3.2.2 IF AGC adjustment
Input 184.25MHz RF signal of 60dB to RF terminal, adjust RP601 to value 4V of TP604, and there
s s h h o
should be no obvious snowy picture. Increase the input signal to 90dBV and it should be no obvious
ou
e no o vious s s no o wy y p c ure
noisy.
nois
sy
3.3 White balance adjustment
3.3.1 HDMI white balance adjustment
a. Input VG-848 signal to HDMI: TIMING854(800*600/60Hz)of PAT920 8 gray scale signal,
adjust the balance with CA210.
b.
Enter COLOR TEMP sub menu and select color temperature of standard (9300K), the
value of coordinate is recommended.
c. Fixed B GAIN, adjust R GAIN, G GAIN to let the color coordinate of the seventh level be
(285,293); Fixed BOFF, adjust R OFF, G OFF to let the color coordinate of the second level be
(285,293) and the brightness is about 3nit-10nit. Repeat adjust R GAIN, G GAIN, R OFF and G OFF,
until the color coordinate of the two level gray scale be (285,293).
3.3.2 VGA/YPbPr/ AV white balance check and correct
a. Connect VG-848 signal of VGA to VGA terminal and input TIMING854 (800*600/60HZ)
(PATTERN: CROSS), and auto adjust to full screen then input PAT948 white and black signal, enter
submenu of ADC ADJ, select AUTOTUNE and wait for OK display. Input PAT920(8 gray levels),
check if the white balance is normal, if not, set ALL COLOR to 0 and fine adjust according the
method of 3.3.1
b. connect VG-848 YPbPr signal to YPbPr terminal and input TIMING972(1080I/60Hz) PAT908
color bar(include back/white bars), enter submenu of ADC ADJ, select AUTOTUNE and wait for OK
display. Input PAT920(8 gray levels), check if the white balance is normal, if not, set ALL COLOR to
0 and fine adjust according the method of 3.3.2
c c . nput AV
c. Input AV signal(PM5518,8 gray scale) to VIDEO terminal and check if the white balance is
n p
n
nal(PM M 5518 8 gra a y scale) to VIDEO term
000
000
adjus
adjust according the power consumption
28
28
Adj
Adjust according the screen
1
1: white balance of each channel auto offset based on the HDMI white
balance
0: white balance of each channel adjust the offset base separately
0
0: no upgrade on line
1: upgrade on line
00
01: turn on
0-100
Volume when turn on
1-200
Channel when turn on
Program source
Input Source when turn on
>
EEPROM Initialization (operate when EEPROM data chaos)
t acco
wer co
nsum
acc
een
00: memory function of turn on
s
gn
al
to t
90
dB
nd check if the w
4
tion
10: standby
V
an
d
ho o
ul
d b
e
no
ob
vio
ous
s
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