A11
PCB_KR8AC
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 (sec-
ondary circuit) at the same time.
2. 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.
POWER (SIDE:A)
POWER (SIDE:B)
H
H
H
H
H H
H
H
H
H
H
H
H
H
H
H
H
H
H
H H
H
H
H
H
H
H
H
1LG4B10W0330A_A
*** ???
T6.3AH250V
F601
+
-
SW601
SW602
LF601
C601
D611
C611
C612
C613
R614
C614
F601A
F601B
L631
IC631
F631
R635
6
1
12
7
T651
C651
D661
C661
D662
C664
C665
VA601
Q643
D633
J604
J603
J606
J605
J602
L612
Q611
C615
L601
PTH611
+
-
DB611
L611
1
11
K6R
L613
L614
L615
L616
J642
J643
J645
J638
J640
L610
C604
C603
J644
J641
C605
C606
J601
C632
J607
SW602_1
SW602_2
SW601_2
SW601_1
C607
A30C5
L612H1
T651H5
L601H4
DB611H3
C615H1
PTH611H1
L601H1
DB611H1
T651H11
DB611H2
T651H12
Q611HD
L612H2
T651H7
DB611H4
LF601H1
Q611HS
C615H2
T651H1
PTH611H2
L601H2
L601H3
LF601H2
Q611HG
1LG4B10W0330A_A
*** ???
T6.3AH250V
F601
+
-
1
2
3
4
4
3
1
2
3
4
1
2
SW602
SW601
LF601
C601
D611
C611
C612
C613
R614
C614
F601A
F601B
L631
IC631
F631
R635
1
6
7
12
T651
C651
D661
C661
D662
C664
C665
VA601
Q643
D633
J604
J603
J606
J605
J602
L612
Q611
C615
L601
PTH611
DB611
L611
1
11
K6R
L613
L614
L615
L616
J642
J643
J645
J638
J640
L610
C604
C603
J644
J641
C605
C606
J601
C632
J607
SCB2
SCB3
SCB5
SCB6
SW602_1
SW602_2
SW601_2
SW601_1
C607
D663
D664
R662
IC671
R671
R629
R633
R613
R627
R626
R642
R634
R628
R648
R624
R651
R646
R622
C671
C662
R643
R636
R625
C663
R644
R641
R631
C653
C634
Q642
Q641
C641
Q651
R683
R674
C633
R675
C626
R684
R672
C625
C627
C622
C621
R676
C631
C623
R673
R611
R652
R612
D613
R616
R615
C644
D634
D632
D651
PTH641
R691
Q691
R692
R621
D631
R602
R601
1
4
8
5
IC621
R623
C642
PC661
PC663
PC662
R632
L612H1
T651H5
L601H4
DB611H3
C615H1
PTH611H1
L601H1
DB611H1
T651H11
DB611H2
T651H12
Q611HD
L612H2
T651H7
DB611H4
LF601H1
Q611HS
C615H2
T651H1
PTH611H2
L601H2
L601H3
LF601H2
Q611HG
A30C5
R/C ( SIDE:A)
R/C (SIDE:B)
1LG4B10W0330B_A
A2901
1
6
K29D
A30C5
MAIN
“K8D”
1LG4B10W0330B_A
*** ???
A2901
1
6
K29D
SC2902
R8855
C2902
C8843
+
C2903
R8856
SC2901
R2903
R2901
C2901
1
4
5
8
IC8811
MAIN
“K8R
R”
LAMP BALLAST
UNIT
AUDIO JACK ( SIDE:A)
AUDIO JACK (SIDE:B)
1LG4B10W0590B
??? ***
A_Side
K30A
K30B
A30C5
??? ***
1LG4B10W0590
B
B_Side
K30
A
K30
B
1
7
K8
M
A30C5
MAIN
“K8L”
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