Toshiba 26HF66 Service Manual page 47

A B
8
7
6
R3405
2.9
10K
SW
Q3403
2SC3928A
5
4
FROM/TO AV OUT
UNREG+5V
3
UNREG+4V_M
POWER_SW
UNREG+4V
Q3406
RT1N241C
AT+5V
DTV_ON-H
D_GND
+3.3V
+1.8V
+2.6V
2
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
1
A B
G-31
C
POWER2 SCHEMATIC DIAGRAM
R3416
100
4.5
0
SW
0
0
Q3404
RT1N241C
0
+5V
POWER_SW
Q3407
REG+3.3V IC
RT1P431C
IC3402 BA00BC0WFP
V_C V_IN GND V_OUT V_ADJ
1 2 6 4 5
3.18 4 0 3.3 1.26
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED CAUTION
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
C
D E
(DIGITAL PCB)
DC/DC CTL IC
IC3401 AL1042
W808
L3401
R3427
0.047
4.7uH
1/4W
ELLCTV4R7N
5 6 7 8
R3428
0.047 1/4W
4 3 2 1
REG+1.8V IC REG+2.6V IC
IC3403 BD7820FP IC3404
V_C V_IN GND V_OUT V_ADJ EN Vin
1 2 6 4 5 1 2
3.18 3.25 1.25
0 1.8 3.18 4
ATTENTION
:SINCE THESE PARTS MARKED BY ARE :LES PIECES REPAREES PAR UN
CRITICAL FOR SAFETY,USE ONES DANGEREUSES AN POINT DE VUE SECURITE
DESCRIBED IN PARTS LIST ONLY N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
D E
F G
B3402
CORE_1.2V
BLM31PG391SN1L
BA7810HFP
GND Vout Vadj
6
3 4 5
0 2.6 1.27
+3.3V
+1.8V
+2.6V
CAUTION: DIGITAL TRANSISTOR CAUTION: DIGITAL TRANSISTOR
ETANT
F G
H
8
7
TO ASIC
CORE_1.2V 6
+1.8V
+3.3V
D_GND
TO FLASH
+3.3V
D_GND
FROM/TO FRONT END
5
+3.3V
+1.8V
D_GND
TO VIDEO DECODER
+3.3V
+1.8V
D_GND
TO HDMI
+3.3V 4
+1.8V
+5V
D_GND
TO AV OUT
+3.3V
+1.8V
+2.6V
D_GND
3
TO SDRAM
D_GND
+3.3V
+1.8V
+2.6V
2
PCBDH0
CEF151
1
H
G-32