Mpi Card Circuit - Zenith H19F34DT Series Service Manual

1 2
G
F
E
This schematic refers to
CL Chassis models
H19F34DT
H20F34DT
H25F34DT
H25F39DT
D
H27F34DT
H27F39DT
H25F36DT
H27F36DT
H32F36DT
C
B
A
SR25-3828VD0171B
3 4
11E1
+11V
58-661
1 +11V
2 GND
MPI_DATA_IN
3
4 MPI_DATA_OUT
5
6
+5V
SBF
7
8
GND
9
10 IR_DATA
C4946 +5V
100uF SBF
11
16V
R4982
470K
6E2
58-661
1 BUFFER_IR_DATA
2
RJ11_PIN4
3 CLONESENSE_PTY_SELECT
4 MPI_DATA_IN_BUFFERED
5
6 MPI_DATA_OUT_BUFFERED
7
8
9
10
11
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER "X" IN THEIR
COMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.

MPI Card Circuit

5 6
+5V
SBF
R4995M
10K
R4996
470 Q4906
121-1310A
C
R4993
B
10K
E
C4967
R4994M
220pF
22K
50V
R4992
Q4905
220
121-1310A
C
R4991
B
4.7K
E
R4990
4.7K
R4984
1K
R4985M R4987
470 3.3K
R4983
1M
E
Q4903
121-1311A
B
R4989M
C
220
C
B
Q4904
121-1310A
E
R4986M
PROV
22K
W12VRJ11
6-7
7 8
+5V
SBF
R4997
10K
MPI
078-3481-01
1
2
C4966
220pF 3
50V
4
5
6
C4965
220pF
50V
+11V
ALL SYMBOLS WITH "M" ON THE DESIGNATOR
INDICATE SURFACE MOUNTED COMPONENT.
9 10