Akai PDP42Z5TA - 42" Plasma TV, Service Manual

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Trouble Shooting Manual of PDP
1 Do not power on
1.1 Please check the AC cable if connect to AC plug.
It is true that the connector doesn’t connect to AC plug. Please connect it.
1.2 Please check the AC cable if connect to AC power.
It is true that the AC cable doesn’t connect to AC power. Please connect it.
1.3 Please check the power board of fuse if broken.
If the F101 fuse is broken, firstly please pull out the AC cable from AC power. Secondly please
check whether the AC L power and the AC N ground have shortened, the multimeter read
number is infinite, and the fuse is broken. Then look over power board if the Output whether is
normal. Please change the power board.
2 The LED (indicator light) is extinguished
2.1 The LED (indicator light) is green or red; to put the power switch when the indicator light is
worked. It is true that the Power DC Output have somewhere short circuit.
Please check the connector J2, J11. If not, please connect the direction whether is wrong, or
the main board somewhere of power short circuit.
3 The power is normal worked, but doesn’t show screen
3.1 The indicator light worked normal (green light).
Please check the main board of transistor Q2 whether rights, if not, it doesn’t have +5V voltage.
It is true Q2 Collector haven’t +5V, to check Q2 if fail. Or to check Q2 of base if not low (low is
working, high doesn’t working).
Please refer to the attached sheet a circuit diagram.
4 The remote control doesn’t be control.
4.1 To check the batteries of remote control if it runs out of.
4.2 To check the main board of connector J3 of wire connects fastness and the connector if broken.
Please refer to the attached sheet a circuit diagram.
5 The sound doesn’t output
5.1 To check the main board +24V voltage of connector J2, it’s not +24V voltage. Then to check the
power main board +24V.
Please refer to the attached sheet a circuit diagram
6 Picture abnormity
Please change the PDP model panel when the picture displays horizontal or vertical level line or
flash spots.
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