Read Sharp BD-HP21H (serv.man2) Service Manual online
BD-HP21U/S/H/A/X/RU/SB,BD-HP50U/X
2 – 5
The reproduced audio signal does not come from each audio output terminal.
Is the audio signal outputted from J2401?
YES
NO
Check the pattern up to J2401.
Check the connected cable and its connection tightness.
Check also the input of connected TV set or amplifier.
Check also the input of connected TV set or amplifier.
Disconnect CN2302. Is there the audio signal at SC5601?
Does the mute circuit function?
Is the audio signal inputted to J2401?
Check the mute circuit and the F_MUTE and AUDIOMAINMUTE
signal lines. Muting occurs when both the F_MUTE and
AUDIOMAINMUTE signals are at "H" level.
signal lines. Muting occurs when both the F_MUTE and
AUDIOMAINMUTE signals are at "H" level.
YES
NO
Are there the following input audio signals at CN2302?
pin (12)
AUD_MAIN_L
pin (14)
AUD_MAIN_R
MAIN FLOW CHART No.4
NO
NO
YES
YES
Check the pattern up to R2212 and R2213.
NO
Check each terminal.
YES
FLOW CHART No.2
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