Chroma - Toshiba 27AFX54 Service Manual

A B
8
FROM AV
V_IN[YUV]
U_IN[YUV]
Y_IN[YUV]
C_V_OUT_SW
Y_V_OUT_SW
7
6
TO TUNER/STEREO
TUNER+5V
5 P.CON+5V
P.CON+8V[B]
TO SOUND
P.CON+8V[B]
FROM/TO POWER
4
UNREG+8V
UNREG+12V
AT+5V
GND
3
FROM/TO DEFLECTION
P.CON+8V[A]
V_OUT
EW_OUT
H_SYNC
H.OUT
ABCL
2
1
A B
G-3
C
CHROMA SCHEMATIC DIAGRAM
R603
330 1/2W
R602
P.CON 5V REG
Q606
15 3W
KTC3209_Y
3.5 0
R644
7.2 5.0
48 47 46
5.5
C641
6.8 3W 3.1
C IN(Y/C)
0.1 B
0
5.0 7.2
NC(GND)
R643
5.5 C642
2.8
Y IN(Y/C)
P.CON 5V REG
6.8 3W
Q602 50V 2.2 KA
8.7
5.0 7.2 KTC3209_Y
VREG VCC
P.CON 5 VREG C601
1.9
Q604 CVBS4
5.5
KTC3209_Y 0.1 B
R610
5.7
5.7V VREG OUT
100 1/4W
3.3
fsc OUT
0
NC NC
0
FAST YUV
BUFFER
5.0
R639
3.1
Q608 3.0
DELAYDE Y OUT
KTC3875S_Y_RTK
100 1/4W
2.4
4.8
EW OUT
C604 2.0
VIDEO LINE OUT
0.1 B
8.7
8.7 VREG OUT
3.9
VRAMP AGC CAP
4.2
V OUT
R642 11.3
7.9
4.1
VRAMP CAP
18 1/2W
P.CON 8V REG
1 2 3
8.5 Q611
R601
KTC3209_Y 3.1 3.8
18 1/2W
P.CON 8V REG
Q601
KTC3209_Y
7.9
11.3
8.5
R609
100
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C
D E
(MAIN PCB)
R616
8.8 4.9
150 1/2W
AT 5V REG
5.5
Q607
KTC3203_Y
R617
100
1.9 0 3.3 0 1.9 5.0 3.4 0 2.0 5.6 3.1 0 3.5 0
45 44 43 42 41 40 39 38 37 36 35 34 33
3.6
Y SW OUT
0
NC NC
4.9
MCU RESET
MCU CLOCK OUT NC
3.5
47 NC(GND) 33 V/C GND P_CON CONT
48 Y IN(YUV) 34 XTAL 3.58 R627
SCL
4.9
100
SDA
4.9
R604

CHROMA

CLK CONT
IC601 4.7
10K 1/4W
M61283FP R70T
FAST BLK
4.1
R IN
3.6
1 HVCO F/B 15 G OUT
G IN
2 AFC FILTER 16 B OUT
3.6
B IN
4.0
V PULSE OUT
4.9
INV.FBP OUT
4.9
MONITOR OUT
4.9
ACL
3.3
4 5 6 7 8 9 10 11 12 13 14 15 16
0
0 0 0 5.5 0.3 3.9 8.0 8.0 8.0 8.0 4.4 4.4 4.4
NC NC
D605
1SS133
R636
D606
R635 1.5K
1SS133
D607
120K
1SS133
R620
C633
0.0082 B
4.4
R608 BUFFER
C623
Q603
1.4
3.3K 1/4W 16V 47 KANP
KTC3875S_Y_RTK
0.8
SVM OFF
Q605
KTC3875S_Y_RTK
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
D E
F G
R628
100
C613
0.1 B
C620
0.1 B
C621
0.1 B
R629 D608
33K 11E1-EIC
R623
100
R626
100
100
C635
100P CH
0.1
R634
0
4.7K
0
F G
H
8
TO REGULATOR
P.CON+5V
FSC_OUT
7
AT+5V
FROM/TO MICON
P.CON+5V
AT+5V
SW_Y_OUT
6
RESET
POWER
SCL
SDA
5
OSD_BLK
OSD_R
OSD_G
OSD_B
VD
HD
SYNC_OUT
VM_SW 4
H_CTL
CLAMP_OFF
TO CRT/SVM
CP802A (CP802B) CD802
3
B2013H02-7P
CU275101
P.CON+8V 1
GND(SIGNAL) 2
R.OUT 3
G.OUT 4
B.OUT 5
CLAMP_OFF 6
VM COIL 7
2
PCB010
TMC566
1
H
G-4