3-6
FWD-42PX2
Button failure
Yes
No
Connect correctly.
(
*
)
Feedback voltage (in the normal state)
Check R12 voltage while pressing each button.
.
DC POWER: 0.07 V
.
ENTER:
0.38 V
.
UP:
0.85 V
.
DOWN:
1.23 V
.
MENU:
1.61 V
.
INPUT:
2.05 V
.
NO KEY:
3 V
Is there any abnormal state in
the connection between CN3
on the A board and the H2 board?
Yes
Is there any abnormal state in
the following items?
.
Resistance of the H1 board
.
R12 on the A board (
*
)
No
Replace the A board.
Replace the defective parts.
n
After replacing the A board, perform the following
adjustments.
.
AD calibration adjustment (Refer to Section 2.)
.
White balance adjustment (Refer to Section 2.)
.
EDID data input
.
S-init Goods (Refer to Section 2.)
n
For the replacement parts, refer to Section 4.
The parts other than those described in Section 4 are
not service parts. When the replacement of those parts
is required, replace them in the assembly unit.
3-7. Other Trouble
DC fan operation failure
Yes
No
Connect correctly.
Is there any abnormal state
in the connection CN23 and
CN24 on the A board.?
Yes
Replace the DC fan.
Is there any abnormal state in
the following items of the fan
assembly? (
*
)
.
1 to 8-pins of CN23
.
1, 2-pins of CN24
No
Replace the A board.
n
After replacing the A board, perform the following
adjustments.
.
AD calibration adjustment (Refer to Section 2.)
.
White balance adjustment (Refer to Section 2.)
.
EDID data input
.
S-init Goods (Refer to Section 2.)
n
For the replacement parts, refer to Section 4.
The parts other than those described in Section 4 are
not service parts. When the replacement of those parts
is required, replace them in the assembly unit.
(
*
)
In the normal state
.
1 to 8-pins of CN23: 9 V
.
1, 2-pins of CN24:
9 V
