Trouble Shooting
Trouble
Analysis
Solution
Frequent Trouble Analysis after Opening Player
Signal lamp is dark or not on,
when power is on.
It maybe occur in power supply
circuit.
See power examination and
reparation procedure
Picture is ok, but the sound is
too low or broken or noisy or
even without sound
It maybe occur in audio
simulative amplify output and
mute circuit.
See audio output examination
and reparation procedure
Sound is ok, but the picture is
without calor or not synchronous
with sound or even without
picture.
It maybe occur in video output
and video program circuit.
See simulative video output
examination and reparation
procedure
The launch device of remote
control is ok, but we can not
control the player.
It maybe occur in remote control
receive circuit.
See remote control system
examination and reparation
procedure.
Remote control is useful, but the
player
¡¯
s keys are not sensible.
It maybe in front control board
program circuit.
See front control board power
examination and reparation
circuit.
Start
To test AV video output and
s-video is ok or not, wave
form is ok or not?
To test inductance L1, L2,
L3, L4, output waveform is
ok or not?
To test IC (BT864)
¡¯
s Feet
8, 10, 12, 13, the waveform
is ok or not?
Repair BT864 program block and
peripheral accessory, to test 16Hz
transistor is ok or not? To test BT
864
¡¯
s feet 49, 50 has synchronous
signal input or not?
To check the connection
status between audio line
and TV
L1, L2, L3, L4 output connect
to s-video peripheral device
and copper foil with open
circuit and short circuit
Examination & Reparation Procedure for Simulative Video
BT864-8: Component Video output A
BT864-10: Component Video output B
BT864-12: Chroma Signal Output
BT864-13 Brighten Signal Output
OK
OK
DVDP480
