Toshiba 20HL85 Service Manual page 33

A B
TO INVERTER
CP3801
8
A2001WV2-14P
14
GND(B.L)
13 NC
I-PWM
12
LCD ON/OFF
11
ANALOG DIMMING
10
GND(B.L)
9
GND(B.L)
W834
8
GND(B.L)
W833
7
GND(B.L)
6
GND(B.L)
5 V IN
4
V IN
7
3
V IN
2
V IN
1
V IN
CD3801
C3854
8 7 6 5
C32E3801
1 F
0.5
TR3801 R3865
0.7
4.7K
0
W5T29X7.5X19 SW
Q3819
1 2 3 4
KTC3875S_Y_RTK
6
R3862
22K
B3805
R3811
W5RH3.5X5X1.0
5A 125V
2.2 1W
F3801
20N_5000FS
5 5A 125V
8 7 6 5
4
3
2 1
1 2 3 4
R3854
0
22K
0.8
4
C3831
SW 0
0.01 B
Q3816
KTC3875S_Y_RTK
C3819
330P CH
R3805 R3806
120K 15K R3807 SW
Q3803
33K
3 2SJ650
23.9
17.6
14 13 12 11 10 9 8
23.9
18.6
SW
Q3801
17.6
2SC2411K
1 2 3 4 5 6 7
17.6
18.6 SW
R3849
2
Q3802
2SA1036K
3.3K
1/4W 0.3
CAUTION
:FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
REPLACE ONLY WITH THE SAME TYPE FUSE
5A 125V
(F3801).
ATTENTION
:POUR UNE PROTECTION CONTINUE LES RISQUES D'INCEIE
1
N'UTILISER QUE DES FUSIBLE DE MEME TYPE
(F3801).
CAUTION
:F3801 IS MANUFACTURED BY SKYGATE
CO.,LTD,TYPE 20N.
A B
G-7
C
R3859
4.7K
5.1
SOUND+B_REG IC
R3858
IC3806 BA00BC0WFP
0 4.7K
0
SW
Q3817
KTC3875S_Y_RTK
AT+5V REG IC
CTL IN GND OUT ADJ
IC3803 BA00BC0WFP
1 2 6 4 5
5.1 12.5 0 9.7 1.3
C3830
0.1 B
CTL IN GND OUT ADJ
1 2 6 4 5
11.6 13.1 0 5.0 1.3
R3866
4.7K
B3812
BLM18PG181SN1D
B3814
BLM18PG181SN1D
R3816
B3807 B3811
13.1 3.3 3.3
4 5 6
BLM18PG181SN1D 0.047 1/10W +-1% L3805
R3817
BLM18PG181SN1D
47uH
0.047 1/10W +-1%
C3816
SBPSC
AT3.3V CONTROL IC
16V 220 YK
AL1010 IC3802
C3817 3 2 1
13.1 13.1
VIN CS 13.1 3.3 3.3
0.1 B 4.5 13.1
V5/PWON EXT
C3815 1.2 0
Vref/SS GND
1.2 1.2
0.047 B
CC FB
R3820 R3824
1.5K 180
+-1% +-1%
15.9
L3804
R3822
B3801
L3802
W5RH3.5X5X1.0
22uH 0.047 1/10W +-1%
TSL0808 R3823
13.1
15uH
0.047 1/10W +-1%
SBPSC
C3824 R3821
1/10W +-1%
0.047
16V 680 FM
C3825
12.7
0.1 B 3.8V CONTROL IC
IC3805 AL1010
C3823
13.9
13.9
VIN CS
D3805 0.047 B
4.5 13.1
V5/PWON EXT
1SS355 1.2 0
Vref/SS GND
1.3 1.3
CC FB
5A 125V
CAUTION
:SINCE THESE PARTS MARKED BY
5A 125V
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
C
D E
POWER SCHEMATIC DIAGRAM
P.CON+12V_SW
P.CON+9V_REG IC
Q3804
IC3804 PQ090RDA1SZH
KTA1281_Y
12.5
13.0
11.6
IN OUT GND ADJ
1 2 3 4
13.0 9.1 0 5.0
0.1
3.7
POWER ON SW
Q3805
0
KRC102SRTK
L3807
B3813 R3835
BLM18PG181SN1D 0.047 1/10W +-1%
22uH
R3834
TSL0808
+-1%
0.047 1/10W
C3840
5V CONTROL IC
16V 680 FM
AL1010 IC3809
C3843 13.2
13.2
VIN CS
D3810
0.1 B 4.5 13.1
V5/PWON EXT
1.2
1SS355 0
C3842
Vref/SS GND
1.4
1.2
CC FB
0.047 B
D3806
1SS355
L3806
15.9 15.9 15.9
B3802
8 7 6 5
W4BRH3.5X6X1.0
47uH
SBPSC
POWER ON SW
1 2 3 4
Q3806
12.7 12.7 11.7 KRC103SRTK
4.5
0
C3834
0
270P CH 0
R3826 R3828 3.7
POWER ON SW
18K +-1% 4.7K +-1%
Q3807
KRC102SRTK
0
ATTENTION
ARE :LES PIECES REPAREES PAR UN ETANT
DANGEREUSES AN POINT DE VUE SECURITE
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
D E
F G
(AV PCB)
C3859
0.47 F
D3818
5.0 4.2 0 0 0 17.8 33.7 W849
14 13 12 11 10 9 8
10ERB20-TA1B2
CVCC COSC NC NC NC CP3 CP3
CP1 CP1 GND CP2 CP2 CREG COUT
1 2 3 4 5 6 7
9.4 5.1 0 17.0 9.5 30.9 30.6
C3851 C3855
0.47 0.47 F
F
13.2 5.0 5.0
4 5 6
L3808
B3803
W4BRH3.5X6X1.0
47uH
SBPSC
3 2 1
13.1 5.0 5.0
NC
R3839 R3842
3K +-1% 180 +-1%
D3817
1SS355
0.1
0.1
SW
SW
Q3811
Q3809
KTC3875S_Y_RTK
KRA104SRTK 0
0.1
R3843
0.8
12.5 12.5
SW
Q3810
22K
KTC3875S_Y_RTK
0
0
0.7 0
SW
Q3808
KTC3875S_Y_RTK
0
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.
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
F G
H
8
TO STEREO/SOUND AMP
SOUND+B
P.CON+5V
P.CON+8V
7
SOUND_GND
GND
TO AV SWITCH
AT+3.3V
AT+5V
P.CON+5V
P.CON+9V
GND
GND_2
6
FROM/TO TUNER/JACK
LCDON
LIGHT_CTL
HP_MUTE
P.CON+32V
P.CON+9V
P.CON+5V
POWER_ON-H
LCD-H
POWER_FAIL
5
GND
4
TO REGULATOR
CD3804 (CP3201)
C32B1801
P.CON+12V
P.CON+12V 1
P.CON+9V
P.CON+9V 2
P.CON+5V
P.CON+5V 3
AT+3.3V
AT+3.3V 4
P.CON+3.8V 5
P.CON+3.8V
P.CON+3.8V 6
GND 7
GND
GND 8
GND 9 3
D3803
P.CON+5V
HDMI+5V 10
21DQ04N
AT+5V 11
2
CAUTION: DIGITAL TRANSISTOR
PCBD20
CME030
CAUTION: DIGITAL TRANSISTOR
1
H
G-8