Sony FWD-50PX3 - 50" Plasma Panel, Service Manual

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3-8
FWD-50PX3
3-9. Plasma Display Panel
3-9-1. Image is not displayed
Image is not displayed.
Yes
No
Connect correctly.
Is there any abnormal state in the
connection of each board?
(Refer to “Disassembly” in
Section 1-3.)
Yes
Is there any abnormal state in
fuse?
.
Y-SUS board (3 positions)
.
Z-SUS board (2 positions)
No
Replace the defective fuse or the
Y-SUS board.
Perform the Va and Vs voltage
adjustments. If trouble persists,
replace the G board.
Yes
Is there any abnormal state in
the output (Va, Vs and 5V) of
the G board?
.
CN807 (From the G board to
the Z-SUS board)
.
CN8 (From the G board to
the Y-SUS board)
No
Is there any abnormal state in
the TIP tube?
Replace the plasma display panel.
Replace the plasma display panel.
n
For the replacement parts, refer to Section 6.
The parts other than those described in Section 6 are
not service parts. When the replacement of those parts
is required, replace them in the assembly unit.
No
No
Yes
Is the symptom improved after
replacing with another Y-SUS
board?
Replace the Y-SUS board.
Yes
Yes
Is the symptom improved after
replacing with another Z-SUS
board?
Replace the Z-SUS board.
No
Yes
Is the symptom improved after
replacing with another CTRL
board?
Replace the CTRL board.
No
n
After replacing the Y-SUS board, perform
the following adjustments.
.
Vsc Voltage Adjustment (Refer to Section 2-4.)
n
After replacing the Y-SUS board, perform
the following adjustments.
.
Vsc Adjustment (Refer to Section 2-4.)
n
After replacing the plasma display panel, perform
the following adjustments.
.
Va Voltage Adjustment (Refer to Section 2-3.)
.
Vs Voltage Adjustment (Refer to Section 2-3.)
.
AD calibration adjustment (Refer to Section 2.)
.
White balance adjustment (Refer to Section 2.)
n
After replacing the plasma display panel, perform the following adjustments.
.
Va Voltage Adjustment (Refer to Section 2-3.)
.
Vs Voltage Adjustment (Refer to Section 2-3.)
.
AD calibration adjustment (Refer to Section 2.)
.
White balance adjustment (Refer to Section 2.)
n
After replacing the G board, perform
the following adjustments.
.
Va Voltage Adjustment (Refer to Section 2-3.)
.
Vs Voltage Adjustment (Refer to Section 2-3.)