PDP-R03U
52.
Power-on failure (Front LED indicator stays off.)
NO
YES
Is the power cable
connector properly
connected with the set?
Reinsert the power cable
connector and turn on the
power again.
NO
YES
Are F701 and F702 intact
in place?
Replace F701 or F702 and
turn on the power again. If
the fuse blows out again,
replace VA701, Q701, Q703
and IC702 and check the
performance again.
NO
YES
Does the BACK5V line
function?
Check the BACK5V line. Is
there any defective part or
short-circuit?
Check the set's wire
harnesses, FFCs and other
parts for their connections.
YES
Repair the defective
part or short-circuit.
Check the
performance again.
NO
Check IC701,
T702, PC703 and
their peripheral
circuits.
Power switch on, but no power
(Front LED indicator does not change from red to green, but remains in red.)
NO
YES
Are the MDR and DVI cable connectors (white
and gray) properly connected with the PDP
and the set as well?
NO
YES
YES
YES
Is the impedance of the M+10V line
as specified? (Measure the resistance
between F1702 and GND.)
NO
NO
YES
Are there voltage
fluctuations along the OVP
line (pin (12) of P1502)?
NO
Check the M+10V line as well
as its circuit parts.
YES
Are the DC/DC converter output
lines and MOS-FET (Q1712,
Q1716, Q1726 and Q1718) as
specified?
NO
Chekc the D_POW and
B+2.5V_POW lines (pins (6)
and (7) of IC1503).
YES
NO
Check the DC/DC converter output
lines and replace the MOS-FET
(Q1712, Q1716, Q1726 and Q1718).
NO
YES
Is the PS_ON terminal (pin (1) of CN703) at HI
(3.5V)?
Check the internal parts of the power
unit (Q703, Q704, Q708, Q709, D717,
D710 and D711).
Are the D_POW and B+2.5V_POW
settings (pins (30), (32), (33) and (34)
of IC1701) at HI?
NO
YES
Do the +5V line (pin (10) of P1703),
+2.5V line (pins (5) and (6) of P1702),
and +3.3V line (pin (8) of P1702) all
function?
Check the set's wire harnesses,
FFCs and other parts for their
connections.
Replace IC1701.
Check the PS_ON line.
Is the M+10V line as specified?
Is the PDP's power switch on?
Reinsert the connectors, and turn on the
power again.
Turn on the PDP's power switch.