Toshiba 27D46 Service Manual page 31

A B
8
DIGITAL/ANALOG TUNER W/NTSC_MPX
TU001
ENG36A49KF
7
C001 0.1 B
C002
6.3V 220
L001
22uH 0305
C040
6
0.1 B
FRON/TO MICON
5
AFT_MAIN
DTV_TX
DTV_RX
AFT_0[L/H]
AFT_1[L/H]
SD-H
DTV_POWER_ON-H
DTV_RESET
4
DTV_POWER_ON-H
DTV_POWER_ON-H
TO AV SW/SOUND AMP/TONE CTL
SPDIF_OUT
TUNER_AUDIO[L]
TUNER_AUDIO[R]
3
FROM CHROMA/IF
TUNER_P.CON+5V
AT+5V
FROM POWER
P.CON+9V
2
UN_REG.3V
UN_REG.6V
1
TUNER+30V
C005
GND
10V 2200
1
A B
G-9
C
TUNER SCHEMATIC DIAGRAM
0 4.9 0 31.45 3.36 0 3.36 3.36
NC NC 4.9 1.37
C004
0.1 B
L003
YK 100uH 0305
C007
0.1 B
4 3 2 1
5 6 7 8
5.01
SW
Q004
0
KRC103SRTK
0
REG.+3.3V IC
IC002 BA00BC0WFP
4.8 5.0
DTV.P.ON_SW
4.2 Q003
KTA1271_Y
V_C V_IN GND V_OUT V_ADJ
1 2 6 4 5
3.3
4.2 5.0 0.2
3.2
0
DTV.P.ON_SW C010
3.2
Q002
0
KRC102SRTK 10V 100 YK
C006
R005
0.33 B
C011
1K
0.1 B
C015
D003 10V 470 YK
1N4005-EIC
W817
1K
R002 R004 R007
1 3W 1 3W
3W
YK
C
D E
(MAIN PCB)
1.69 2.37 4.96 4.96 0 4.9 0 0 0.6 0
L004
22uH 0305
C024
0.01 B
R019 R022
390K 4.7K
R031
5.0
0.5 82K
IF AMP
2.4 0.5
Q005
2SC3841-T1B_T63
IF AMP 0.0
1.8
Q006
2SC3841-T1B_T63
1.8
C027
0
0.0022 B IF AMP
0
Q007
2SC3841-
T1B_T63
ACIC. 1.8V IC
REG. +2.6V IC
IC004 PQ070VK02FZH
IC003 BA00BC0WFP
V_IN CTL V_OUT ADJ GND
V_IN
V_C V_IN GND V_OUT V_ADJ
1 2 3 4 5
1 2 6 4 5
2.6 2.6 0 1.3 1.3
3.1 4.2 0 2.6 1.2
C023 C012
10V 100 YK 10V 470 YK
C033
C021
0.33 B
C034
0.33 B
C025
10V 470 YK
0.1 B C035
C026
0.1 B
R038
10V 1000 YK
82
R018
HS001
1/4W
763WAA0309
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
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
W844
5.0
5.0
SW
0
0.0
Q009
KRA102SRTK 3.2
SW
0
Q010
KRC103SRTK
F/E 1.8V IC
IC005 PQ070VK02FZH
V_IN CTL V_OUT ADJ GND
1 2 3 4 5
2.6 2.6
0 1.8 1.3
C036
10V 470 YK
C037
C038
0.33
B
10V 470 YK
C039
0.1 B
R042
68
HS002
763WAA0309
D_Y_OUT
D_C_OUT
CAUTION
:SINCE THESE PARTS MARKED BY
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
ATTENTION
:LES PIECES REPAREES PAR UN
DANGEREUSES AN POINT DE VUE SECURITE
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
CAUTION: DIGITAL TRANSISTOR
CAUTION: DIGITAL TRANSISTOR
F G
H
8
TO CHROMA/IF
A_TUNER_CVBS
7
6
5
4
3
TO COMB/FILTER
D_Y_OUT
D_C_OUT
2
ARE
ETANT
PCB070
CME077
1
H
G-10