Sharp LC-20S5E-BK Service Manual page 47

A B
8
7
6
FROM/TO POWER1
5
AT+3.3V
P.CON+8V
AT+6V
AT+14V
4
3
2
CAUTION
:SINCE THESE PARTS MARKED BY ARE
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
1
A B
H-17
C
REGULATOR SCHEMATIC DIAGRAM
P.CON+5V REG
IC3400 BA00BC0WFP
V_C V_IN GND V_OUT V_ADJ
1 2 6 4 5
7.0 6.2 0 5.0 2.4
R3415
10K R3401
8.2K
D3401
+-1%
EC31QS04
ATTENTION
:LES PIECES REPAREES PAR UN ETANT
DANGEREUSES AN POINT DE VUE SECURITE
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
C
D E
(MAIN PCB)
AT+1.8V REG
IC3401 BD7820FP
V_C V_IN GND
1 2 6
AT+3.3V
2.0 2.6 0
R3404
1K
D3402 D3403
AT+3.3V
EC31QS04 EC31QS04
GND
AT+1.8V REG
IC3402 BD7820FP
V_C V_IN GND
1 2 6
P.CON+5V
2.0 2.6 0
R3408
1K
D3404 D3405
EC31QS04 EC31QS04
GND
GND
VOLTAGE CTL
IC3205 KIA78D05F
IN GND
1 2
12.0 0 5.0
D3200 D3201 D3208
EC11FS2-TE12L EC11FS2-TE12L EC11FS2-TE12L
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
F4
V_OUT V_ADJ
4 5
1.8 0.9
R3405
2.2K
+-1%
AT+1.8V_1
F4
V_OUT V_ADJ
4 5
1.8 0.9
R3409
2.2K
+-1%
AT+1.8V_2
OUT
3
AT+5V
GND
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
F G
H
8
7
FROM/TO AV JACK/SWITCH
AT+5V
GND
6
FROM/TO SCALER
P.CON+5V
AT+1.8V_1
AT+1.8V_2
5
FROM/TO 21PIN
AT+5V
FROM/TO TUNER
P.CON+5V
4
FROM/TO SOUND AMP
P.CON+5V
AT+5V
3
2
PCBF40
CMF102 1
H
H-18