Toshiba 27AFX54 Service Manual page 29

A B
8
TO CHROMA
V_IN[YUV]
U_IN[YUV]
Y_IN[YUV]
C_V_OUT_SW
Y_V_OUT_SW
7
FROM TUNER/STEREO
J_AUDIO_OUT_R
J_AUDIO_OUT_L
EXT_AUDIO_L
EXT_AUDIO_R
TUNER_VIDEO
6
FROM/TO MICON
EXT_MUTE
SCL
5
SDA
KTC3875S_Y_RTK
FROM/TO REGULATOR
C740
4 16V
SW_VIDEO_OUT
COMB_OUT_Y
COMB_OUT_C
3
2
FROM/TO POWER
P.CON+9V
GND
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
1
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
A B
G-13
C
AV SCHEMATIC DIAGRAM
L702
47uH 0305
C710
16V 47 KANP
BUFFER 8.9
R731
Q703
IC701
5.2
KTC3875S_Y_RTK
1K
3.8 NC
D_SW_1
5.1
Cout
C708
5.3
16V 100 YK
Vcc
8.9
BUFFER 8.9
R732
Yout
Q702
5.5
5.4
1K
C702
4.9
C744
BIAS
4.4
16V 22 KA
56P CH 8.9
C745
R737
W844
R712 Vout
6dB
68P CH
5.3 5.4
1K
1K R702 4.8
BUFFER
Lout
Q701
1K 6.4
KTC3875S_Y_RTK
C726
Yin
5.5
16V 10 KA
10 KA C743 Rout
6.4
16V 10 KA
C739
Cin
5.0
0.1 B
0
GND
SCL
4.9
SDA
4.9
Sin2
0
C703
5.0
1 F
C704
6.3
1 B
C723
D705
5.3
16V 10 KA
C705
1SS133
1 F 6.3
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
C
D E
(MAIN PCB)
29
C711
R708
C707 R704
16V 10 KA 1K
16V 10 KA 1K
0
R703 R711
0
2.2K 1K
5.2
4.6 BUFFER
Q709
KTA1504S_Y_RTK
0
AV SW IC
AN15853B-E1
0
D_L1_Vin
C715
5.4
6dB
D706
16V 10 KA
6.3
C722
1SS133
+ 1 B
C733
4.9
6dB
16V 10 KA
C725
6.3
1 B
C734
5.1
0.1 B
0
0
C701
5.4
D710 R738
16V 10 KA
6.3
C719
1SS133 75
1 B
C706
4.9
16V 10 KA
C720
6.3
1 B
C716
5.1
0.1 B
Sin1
0
C724
4.4
0.1 B
C717
5.3
16V 10 KA
C727
4.4
0.1 B
Vref
C714
4.7
0.1 B
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
D E
F G
YUV_IN(REAR)
J704
MSP-213V1-652_NI
28
A/V_OUT(REAR)
J708
MSP-213V2-432_NI
C728
MUTE R721
Q711
16V 470 YK 68
KTC3875S_Y_RTK
MUTE
0
Q712
0 R710
KTC3875S_Y_RTK
0
1K
0
LINE2(REAR)
J703
MSP-213V2-432_NI
R734
R728
3.9K
3.9K
LINE1(REAR)
J701
MSP-213V2-432_NI
R733
R726
3.9K
3.9K
REAR-S-JACK
J702
YKF51-5503
R745
3.9K
R746
3.9K
YKF51-5503
AUDIO SIGNAL(REC)
F G
H
8
7
6
5
4
FRONT-VIDEO
J705
HTJ-032-03AY
LINE3_V_IN
FRONT-AUDIO.L
J706
HTJ-032-03AW
LINE3_A_IN_L
3
FRONT-AUDIO.R
J707
HTJ-032-03AR
LINE3_A_IN_R
FRONT-S-JACK
J709
2
PCB010
TMC566
1
H
G-14