Orion 21MT9A Service Manual page 29

A B
8
7
6
TO IF/CHROMA/SOUND AMP
(CP851A)
CP851B
IMSA-9130S-06L
1 SYNC
2 TEXT-B
5
3 TEXT-G
4
TEXT-R
5 GND
6 TEXT-Y
4
3
FROM/TO IF/CHROMA/SOUND AMP
CP852B (CP852A)
IMSA-9130S-05L
1 AV_VIDEO_2
2 SDA
3 SCL
4 T_TEXT_RESET
5 AT+5V
2
1
A B
G-17
C D
T'TEXT SCHEMATIC DIAGRAM
4.6
SYNC BUFFER
C870
2.1
Q852
2SC2412K
16V 100 YK
1.46
4.9
B850
R854
BUFFER 0
Q851
330 LFP3A-M3R2TA
2SC1815Y
0.3 C861
0.01 B
R864
100
R865
100
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C D
E F
(T'TEXT PCB)
W864
W857
DECORDER IC
IC850 ET106
1.1 1.0
FLAG2 TEST5
NC
W861
1.1 3.5
FLAG1 SYNC
C855
R875 0.022 F R885
2.2 3.5
REF. VIDEO
56K 10K
2.2
4.9
RGB SET AVCC
4.9
0 W860
AGND RSTB
W854
0 0
RED CLK.IN
0 0
GREEN DGND
W853
4.9 0
DVCC TEST1
0 4.9
BLUE TEST4
W859
0 0
BLANK TDATA
4.2
0
SDA TCLK.
4.0 4.5
SCL CSB
4.9 4.9
TEST3 NC
0 0
WIND TEST2
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.
E F
G
W868
R870
1K
W851
C887
56P CH
DATA SLICER IC
IC851 ET317
0
C886
1.8
SCAN-0 TSIG
0.022 B
1.7
W865 4.5 W870
SYNC SSIG
C879
0 0
DGND CSIG
220P B
0 0
WIND AGND
30
X850
4.9 2.2
DVCC OSC1
13875KHz
C884
2.2 2.5
OSC OUT OSC2
15P CH
0 4.9
DGND AVCC
0 0
TDATA CREF.
0 0
TCLK. AGND
R879
0 1.6
TSTAPLB BIAS
1K
W867
PCB150
TE9A15
G
H
8
7
6
5
4
3
2
1
H
G-18