Sharp BD-HP16U Service Manual page 16

BD-HP16U
FLOW CHART No.2
The reproduced audio signal does not come from each audio output terminal.
Is the audio signal outputted from J2401?
Are there the following input audio signals at CN2301?
pin (16) AUD_MAIN_L
pin (18) AUD_MAIN_R
Does the mute circuit function?
Is the audio signal inputted to J2401?
Check each terminal.
3. OPERATION/LCD UNIT
FLOW CHART No.1
The main unit controls function, but the remote controller
controls fail to function.
Is the remote control code as specified?
Is the 5V voltage applied to pin (3) of the RMC1101 remote
control receiver?
Using the remote controller, is the "L" pulse signal outputted
from pin (1) of RMC1101?
Is the "L" pulse signal inputted to pin (23) of IC2503?
Check IC2503. Replace it as required.
NO
YES
NO
YES
The remote controller does not function.
YES
YES
YES
YES
YES
YES
Check the connected cable and its connection tightness.
Check also the input of connected TV set or amplifier.
MAIN FLOW CHART No.4
NO
Disconnect CN2301. Is there the audio signal at SC5601?
Check the pattern up to R2212 and R2213.
Check the mute circuit and the AUDIO_MUTE signal lines.
YES
Muting occurs when AUDIO_MUTE signal are at "H" level.
NO
Check the pattern up to J2401.
NO
Check the remote control codes 1, 2 and 3.
NO
Check the AT_5V line.
NO
Replace RMC1101 or the remote control receiver.
NO
Check the line between pin (1) of RMC1101 and pin (23) of IC2503.
4 – 5
NO
YES