29
LC-13
AV6
U
TROUBLE SHOOTING TABLE
Check IC7701 and its
peripheral parts.
Is T7701 primary
switching waveform at
pin (1) of IC7701
normal?
Check all output voltage
line for short or open
circuit.
Are T7701 secondary
output at C7734, C7735
voltage normal?
Check the voltage at
C7006, C7008, C7010
and C7012 are normal.
Check the primary side
of T7001, IC7301 and
their peripheral circuit.
Is F7701 specified?
And be function?
Disconnect F6700 or
F6702. Is the load
short-circuited?
Are F6700 and F6702
as specified?
Are there DC 18V input
at F6700 and F6702?
Is the pin (187) of
IC1004 in "H" state?
No video and audio output (No po
wer)
No fluorescent lamp light-up
Yes
Yes
No
No
No
No
No
No
No
No
Is Q7751 base v
oltage at
"L" state?
Replace F7701.
Accord specified.
Remove F7701 and
check the load side. Is
there any short-circuit in
T7701 primary side and
periphery?
Yes
Yes
Are the outputs of
Q3601 and Q3602 in the
"L" state?
Yes
Are the waveform of pins
(2) and (4) of T6701-
T6704 normal?
Yes
Is the waveform of pin
(10) of T6701-T6704
normal?
Yes
Check the error amp
circuit
D6705, D6707, D6710,
D6712, D6715, D6716,
Q6706, Q6713 and their
peripheral parts.
Yes
Yes
Check IC7701/T7701
and its peripheral
parts.
Check the OFL 1/2
line, IC1004 and its
peripheral parts.
Check the OFL line,
Q3601/Q3602 and its
peripheral parts.
Check Q6700-Q6702,
Q6707-Q6709 and its
peripheral parts.
Replace the backlight
lamp with new one
and check again.
Check Q6700-Q6702,
Q6707-Q6709 and its
peripheral parts.
Yes
Yes
No
No
No
Summary of Contents for LC-13AV6U
Page 8: ...LC 13AV6U 8 DIMENSIONS Unit inch mm ...
Page 35: ...LC 13AV6U 37 36 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H OVERALL WIRING DIAGRAM ...
Page 37: ...LC 13AV6U 39 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM ËR C LED Unit ...
Page 38: ...LC 13AV6U 41 40 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H ËSUB Unit 1 4 ...
Page 39: ...LC 13AV6U 43 42 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H ËSUB Unit 2 4 ...
Page 40: ...LC 13AV6U 45 44 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H ËSUB Unit 3 4 ...
Page 41: ...LC 13AV6U 47 46 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H ËSUB Unit 4 4 ...
Page 42: ...LC 13AV6U 49 48 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H ËMAIN Unit 1 5 ...
Page 43: ...LC 13AV6U 51 50 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H ËMAIN Unit 2 5 ...
Page 44: ...LC 13AV6U 53 52 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H ËMAIN Unit 3 5 ...
Page 45: ...LC 13AV6U 55 54 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H ËMAIN Unit 4 5 ...
Page 46: ...LC 13AV6U 57 56 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H ËMAIN Unit 5 5 ...
Page 47: ...LC 13AV6U 58 6 5 4 3 2 1 A B C D E F G H ËOPERATION Unit ...
Page 49: ...61 LC 13AV6U 60 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SUB Unit Wiring Side QPWBFD368WJN1 ...
Page 51: ...65 LC 13AV6U 64 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H MAIN Unit Side A ...
Page 53: ...69 LC 13AV6U 68 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H MAIN Unit Side B ...
Page 66: ...83 LC 13AV6U PACKING OF THE SET S4 S2 X2 X3 X4 X5 X6 X1 S3 S5 S3 S1 R L ...