Toshiba 42HP66 Service Manual page 54

A B
8
7
6
5
4
3 SW
5
Q2277
KTA1504S_Y_RTK
5
0.4
IR PASS THROUGH
B2271
J2275
MSJ-035-12A_PC
BLM18BB600SN1
L
2
R
3
1
2
1
A B
H-15
C
IR PASS SCHEMATIC DIAGRAM
FROM/TO AV SWITCH2
CP2251 (CP4202_1)
A2001WR2-6P
1 IR-THROUGH
2 REMOCON IN
3 GND
4 AT+5V
5 STANDBY LED
6 P.ON LED
L2275
47uH
R2281
R2286
10K
5
330
R2282
R2284
SW
5 1.2K
5 220
0 C2280
Q2276
2SA2048 SW
0.3
0.01 B
Q2275
0
KTC3875S_Y_RTK
C
D E
(AV PCB)
(REMOCON PCB)
BUFFER 5.2
Q2252
KTC3875S_Y_RTK
2.8
W917
1 Vout
2 GND
R2252
3 B+
47 1/4W
OS2251
ROM-V338TAO
STANDBY/POWER
D2251
LTL-1BEFJ-002A
OPE AMP
IC2275 NJM4580V(TE1)
+VS
C2275
0.01 B
R2277
220K
-VS
or BA10358F-E2
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
D E
F G
R2253
270
5
PIN PHOTO DIODE
Q2251
0.5
C2256 HPI6FGR4F2
3.5
1 B
W848
PCBDA0
CEF179
FROM/TO AV SWITCH2
IR-THROUGH
FROM/TO POWER
AT+5V
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.
F G
H
8
7
6
5
4
3
2
1
PCBD20
CMF083
H
H-16