HP LC3260N Service Manual page 59

A B
8
7
6
R3405
10K
KTC3875S_Y_RTK
5
4
FROM/TO AV OUT
UNREG+5V
UNREG+4V_M
3
POWER_SW
UNREG+4V
Q3406
KRC103SRTK
AT+5V
3.1
DTV_ON-H
D_GND
+3.3V
+1.8V
+2.6V
2
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
1
A B
H-45
C
POWER2 SCHEMATIC DIAGRAM
R3429
100
4.5
0
SW
0
0
Q3404
2.9
KRC103SRTK
SW
0
Q3403
5.2 5.2
+5V
POWER_SW
Q3407 REG+3.3V
5.3
KRA101SRTK
IC3402 BA00BC0WFP DH
V_C V_IN GND V_OUT V_ADJ
1 2 6 4 5
3.18 4 0 3.3 1.26
5.3
0
CAUTION
:SINCE THESE PARTS MARKED BY
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
C
D E
(DIGITAL PCB)
1.2 1.3
0.8 10.3
3.3 0.1
0 5.4
DC/DC CTL
3.3 0
IC3401
2.9 AL1042 5.1
0 5.2
W808
3.3 5.2
5 5 1.3 1.3
5 6 7 8
4 3 2 1
2.7 1.3 3.5 0
REG+1.8V
IC3403 BD7820FP DH
V_C V_IN GND V_OUT V_ADJ
1 2 6 4 5
3.18 3.25 1.25
0 1.8
ATTENTION
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
L3401
R3427
B3402
CORE_1.2V
0.047 BLM31PG391SN1L
4.7uH
1/4W
ELLCTV4R7N
R3428
0.047
1/4W
REG+2.6V
IC3404 BA7810HFP
EN Vin GND Vout Vadj
6
1 2 3 4 5
0 2.6 1.27
3.18 4
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
TO FRONT END
+3.3V 5
+1.8V
D_GND
4
TO AV OUT
+3.3V
+3.3V
+1.8V
+1.8V
+2.6V
+2.6V
D_GND
3
TO SDRAM
D_GND
+3.3V
+1.8V
+2.6V
2
PCBDH0
CEF169
1
H
H-46