Av Switch1 - HP LC3260N Service Manual

A B
8
SW2_G/Y
SW_G/SW_Y
7
SW2_B/CB
SW_B/SW_CB
6
SW2_R/CR
SW_R/SW_CR
5
FROM/TO MICON
C_SYNC
SD_SW1
FROM/TO SCALER
SW_VIDEO_Y
4
SW_R/SW_CR
SW_G/SW_Y
SW_B/SW_CB
SW2_R/CR
SW2_G/Y
SW2_B/CB
SW_CVBS
3
FROM/TO ADC1
SW_Y/G
SW_PB/B
SW_PR/R
2
GND
FROM/TO REGURATER
P.CON+9V
P.CON+5V
1
A B
H-27
C D
AV SWITCH1 SCHEMATIC DIAGRAM
W840
R8105
150
R8142
R8122
150
150
R8149
150
R8124
150
C8112
C8109
1 B
1 B
C8113
C8110
1 B
1 B
C D
E
(SCALER PCB)
5.0
BUFFER
R8148
Q8106
0.7 2SA1530A
100
0
5.0
BUFFER
R8145
Q8105
0.7 2SA1530A
100
0
SCART2 OUT CVBS SW
IC8103 MM1501XNRE
8.9
SYSNC_SEPA
VCC
H
5.1 Q8101
5.1
2SA1530A
C8128 R8116
4.4
0
5.5
BUFFER 1 B 1K
1.5
R8125
R8113
0
L
5.1 12K
100K
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
E
F G
SW_Y/G
SW_PB/B
SW_PR/R
NLCV32T
L8105
P.CON+5V
22uH
P.CON+5V
SYSNC_SEPA
Q8103
1.0
C_SYNC
2SC3052
R8129 R8130
0.7
3.3K 4.7K
0
SYSNC_SEPA
Q8102
2SC3052
3.1
C8146 0.3
B 1
0
PCBDS0
CEF156
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
H
H-28