A11
PCB_KR7AL
Printed Wiring Board Diagrams
!
cAutIoN
This projector is isolated from AC line by using the internal converter transformer.
Please pay attention to the following notes in servicing
1. Do not touch the part on hot side (primary circuit) or both parts on hot and cold
sides (secondary circuit) at the same time.
. Do not shorten the circuit between hot and cold sides.
3. The grounding lead must be connected to the ground of the same circuit when
measuring of voltages and waveforms.
1AA4B10C6240C
A SIDE
A30C
5
SeNSor (SIde:A)
SeNSor (SIde:B)
B SIDE
IC1899
3
1
K18X
R1898
R1899
C1801
A30C5
MAIN
“K8D”
A SIDE
1AA4B10C6240B
A30C5
D
C
coNtroL (SIde:A)
B SIDE
DOWN
LEFT
RIGHT
UP
SELECT
LENS
ON/STAND-BY
MENU
INPU
T
SHUTTER
SW6877
D687
2
SW6871
SW6878
SW6876
SW6879
SW6873
SW6872
SW6874
D687
3
1
10
K68A
SW6875
SW6880
D6874
D6875
D6878
D687
7
D687
1
D6895
D687
6
D6879
D6880
C6871
C687
2
C687
3
C687
4
C687
5
C687
6
C687
7
C6878
R687
1
R6872
R687
3
R6874
R6875
R687
6
R6877
R687
8
A30C5
D
C
coNtroL (SIde:B)
MAIN
“K8J”
1AA4B10C6250B
A SIDE
AU2801
NTH11
D2851
R2853
D2852
C2854
R2851
D2853
C2852
C2853
R1691
1
8
K28B
C1691
R1692
C1692
R1693 C1693
IC1692
1
4
5
8
R2852
C2851
A30C5
r/c FroNt (SIde:A)
MAIN
“K8X”
B SIDE
NTH11
A30C5
2
3
r/c FroNt (SIde:B)
1AA4B10C6250C
A SIDE
LAMP
SW1861
1
3
K18S
A30C5
coVer SW (SIde:A)
MAIN
“K8B”
B SIDE
LAMP
A30C5
coVer SW (SIde:B)
POWER
LAMP
LAMP
REPLACE
WARNING
WARNING
FILTER
TEMP.
1AA4B10C6250D
A SIDE
SHUTTER
D688
2
D688
3
D688
4
D688
5
D688
6
D688
7
D688
8
D688
9
D689
1
D689
2
R689
1
C689
1
R689
2
R689
3
R689
4
R689
5
D688
1
9
1
K68B
D689
0
R6896
A30C5
Led (SIde:A)
MAIN
“K8H”
B SIDE
A30C5
Led (SIde:B)
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