4
BRIEF CIRCUIT DESCRIPTION
107T6 CRT
55
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BRAND :
PHILIPS
1 inch
Monitor
7
CRT
TYPE
:
107T60/00
8639 000 15483
2004-04-19
2004-04-19
4
T
he red, green and blue video signals are amplified by pre
-
amplifier and post
-
amplifier, then A
C
coupled to
CRT
cathodes via
DC
restoration circuits (
L
M
24
8
0
).
T
hree cut
-
off adjustments are provided to set the video black level at
cathode for all three guns.
T
hree individual gain adjustments are also provided to adjust the white balance.
B
oth cut
-
off
and gain controls are digital control via micro
-
controller (included in
D
emic
IC
).
A spot
-
killer circuit (
7502
, etc) is also provided to prevent the
CRT
damage due to spot burn
-
out when the set is
switched off.
DDC 2B:.
Via
SD
A and
SCL
, the data about the information of the monitor, including the serial number, production codes,
CRT
type and applicable timings, are stored in the
EEPRO
M.
T
o avoid picture interference, the reading and writing
processes are executed during vertical blanking which is informed by the vertical
S
Y
NC
.
D
. M
ICRO-CONTROLLER
GENERAL DESCRIPTION:
T
he micro
-
controller (included in
D
emic
IC
) is used to control all required functions of monitors.
T
he preset data
are stored in
EEPRO
M M
24C16
.
T
he most important point is using
interrupt
to do the fast detect of mode
change.
T
hen the M
CU
, through the deflection part of
D
emic
IC
, delivers a good protection behavior for
horizontal output transistor during mode change.
HARDWARE DEFINITIONS:
a) K
E
Y
BO
A
RD
T
here is a keypad with five keys at the front of monitor for
P
ower
-
on
/
off ,
L
ight
F
rame on
/
off,
and the
OSD
control.
- P
ower
-
on
/
off
T
o switch on
/
off the set.
- L
ight
F
rame on
/
off
T
o enable
/
disable the
L
ight
F
rame function
- OSD
function keys:
- E
nter (
O
K)
P
ush it, to confirm the entrance or exit from the
OSD
window.
-
+ (
DO
W
N/RI
G
HT/INCRE
A
SE/BRI
G
HTNESS
)
T
o select downward or rightward the parameters which are chosen from
OSD
.
T
o increase the scale of the selected parameter.
T
o call for brightness adjustment.
-
(
UP/LEFT/DECRE
A
SE/CONTR
A
ST
)
T
o select upward or leftward the parameters which are chosen from
OSD
.
T
o decrease the scale of the selected parameter.
T
o call for contrast adjustment.
b)
OSD
will disappear and
S
AV
E
A
UTO
MA
TIC
A
LL
Y after non
-
operation.
c)
S
oftware will control the
DP
M
S
according to the
S
Y
NC
status.
Содержание 107T6
Страница 9: ...Go to cover page Electrical Instructions 107T6 CRT 9 ...
Страница 11: ...Go to cover page Electrical Instructions 107T6 CRT 11 ...
Страница 33: ...33 107T6 CRT Go to cover page Wiring Diagram ...
Страница 36: ...Go to cover page 36 107T6 CRT Main Board C B A 1 ...
Страница 37: ...37 107T6 CRT Go to cover page Main Board C B A 2 ...
Страница 39: ...39 107T6 CRT Go to cover page Video Board C B A 1 ...
Страница 40: ...Video Board C B A 2 Go to cover page 40 107T6 CRT ...
Страница 41: ...41 107T6 CRT Go to cover page Control Schematic Diagram C B A ...
Страница 45: ...Exploded View 107T6 CRT Go to cover page 45 ...