Sanyo PDP-63XR7HB, Service Manual

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Note: when check N801(CPU) pin10 is low voltage, you may disconnect R616 and test if V603
collector output low voltage first, then output high voltage all the while (the low voltage is CPU reset
signal, it turns to high voltage when working normally), if not, it’s power manage IC problem. Is there
square wave in FLASH pin26? If not, disconnect R851 and test if the square wave output from
N806 pin3, if still not, check N801 pin46-48 and N806. Check N801 pin42, if it has no square wave,
disconnect R856 and has a test again, if it has, perhaps N802(FLASH) is error. When check the
periphery of N801, N802 and N803, besides check the weld of the components, you may test the
pins of the resistance row connect N801, N802 and N803 with oscillograph, if the square wave is
abnormal, it indicates that one of them (N801, N802, N803) works abnormally and the SDL, SCL is
error, N802 in all probability. If RS51/RS52 connect N801 and NS01 is error, it will also cause the
phenomena of no raster, no picture and no sound.
2.With sound but no picture
Note: Please refer to checking procedure (4) to get the methods for checking the phenomenon of no
picture but with sound of HDMI channel.
With sound but no picture.
Display logo?
Check if all other channel
has no picture.
Check the white
balance value of
the factory menu Re-write the
software and
have a test
Check the signal
wave of XS01 with
oscillograph.
Is the panel light or produce the
high voltage when power on
Check the input signal of N301
and N302 and power supply.
Power board
damaged.
The panel
damaged.
Connect the
wire well
Yes No
No
Yes
Normal
Normal Abnormal Abnormal
Abnormal Normal
Follow the input
signal and
check the circuit EEPROM
irritation and
adjust again
No Yes
Is LVDS wire
normal?