Sanyo DP26670 Service Manual page 56

A B
8
7
FROM/TO POWER1
AT+6V
AT12V
SW+12V
INV_SW+24V
P.CON+30V
GND
6
SW+12V
5
W838
FROM/TO REGULATOR3
LIGHT_CTL GND
INVERTER_H
LCD+B
POWER_ON_H
SW+12V
P.CON+5V_A AT12V
GND
4
POWER_ON_H
3
2
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
1
A B
G-35
C
W814
D3905
1SS133
C3922
25V 0.15 B
DC-DC CONVERTER D3903
32V_SW IC3903
Q3906 LA5797M-TE-L-E 1SS133
21.0
KRA103SRTK
D3906
11.68
V_IN VRET
C3923
0
11.8 9.2 1SS133
CPOUT
EN
0
0 1.2
25V 0.15 B
NC GND
NC
D3904
0
0
NC
NC FB
1SS133
0
1.2
R3920 R3921
3.3
32V_SW 0
220K +-1% 22K +-1%
Q3905
KRC103SRTK
R3901
POWER_ON_H
100
NC
0 0 2.6
3 2 1
ON/OFF GND NC
5V REG
IC3902
RP131H501D-T1-F
VIN VOUT
4 5
5.8 5.0
AT+6V P.CON+5V_A
GND
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.
C
D E
POWER2 SCHEMATIC DIAGRAM
(POWER PCB)
SW+12V
LCD+B
P.CON+30V
GND
CAUTION
:SINCE THESE PARTS MARKED BY ARE
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
ATTENTION
: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
INV_SW+24V
R3910
INVERTER_H
1K W819
1/4W
R3909
LIGHT_CTL
100 1/4W
GND
CAUTION: DIGITAL TRANSISTOR CAUTION: DIGITAL TRANSISTOR
F G
H
8
CP3906
A2001WR-14A
+24V 1
+24V 2
+24V 3
+24V 4
+24V 5
7
GND 6
GND 7
GND 8
GND 9
GND 10
NC Analog/Dimming 11
12
ON/OFF
PWM/Dimming 13
NC N.C(open) 14
6
14PIN
CD3906
CP2E1202
5
4
3
2
PCB240
CEJ508
1
H
G-36