Sharp BD-HP21H (serv.man2) Service Manual ▷ View 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
BD-HP21U/S/H/A/X/RU/SB,BD-HP50U/X
2 – 6
(BD-HP50 Series)
No picture appears with the component, S-Video or composite signal.
Is the video signal outputted from the component terminal
J2403, S-Video terminal J2404 or composite terminal J2401?
J2403, S-Video terminal J2404 or composite terminal J2401?
YES
NO
* Is the component output sent to the component terminal if
selected?
selected?
Select the component output with the remote controller.
Hold down the HDMI button on the remote controller.
CP-oP: Component output
H-oP: HDMI output
Hold down the HDMI button on the remote controller.
CP-oP: Component output
H-oP: HDMI output
Mount C2301, C2306, C2313, C2317 and C2320 in place.
If no signal comes in, replace IC2301.
(When the 5V signal is fed to pins (7) and (21) of IC2301.)
If no signal comes in, replace IC2301.
(When the 5V signal is fed to pins (7) and (21) of IC2301.)
Are pins (2) (composite, S-Video terminal output mute) and (13)
(component output mute) of IC2301 at "H" level? ("H": Mute)
(component output mute) of IC2301 at "H" level? ("H": Mute)
Disconnect the output coupling capacitors C2302, C2305, C2309,
C2314, C2318 and C2321. If no signal comes out of the IC, replace
this IC.
C2314, C2318 and C2321. If no signal comes out of the IC, replace
this IC.
Check the connected cable and its connection tightness.
Check also the input of connected TV set.
Check also the input of connected TV set.
Disconnect CN2302. Is there the signal at each terminal of SC5601?
Check the PMUTE1, PMUTE2
and F_MUTE lines.
and F_MUTE lines.
Check IC2301 and its
peripheral circuits.
Or replace IC2301 as required.
peripheral circuits.
Or replace IC2301 as required.
NO
YES
Is the video signal inputted to the component terminal J2403,
S-Video terminal J2404 or composite terminal J2401?
S-Video terminal J2404 or composite terminal J2401?
Check each terminal.
Check the line between IC2301 and each terminal.
NO
YES
Are there the following input signals at the CN2302 terminals?
Ԙ Component
Ԙ Component
pin (6)
MAIN_Y
pin (8)
MAIN_PB
pin (10)
MAIN_PR
ԙ Composite and S-Video terminals
pin (2)
SUB_Y
pin (4)
SUB_C
MAIN FLOW CHART No.3
NO
NO
NO
YES
YES
YES
NO
YES
Are there the following input signals at the IC2301 terminals?
Ԙ Component
Ԙ Component
pin (8)
CY_IN
pin (10)
CB_IN
pin (12)
CR_IN
ԙ Composite and S-Video terminals
pin (1)
C_IN
pin (3)
Y_IN
Are there the following output signals at the IC2301 terminals?
Ԙ Component
Ԙ Component
pin (20)
CY_OUT
pin (17)
CB_OUT
pin (15)
CR_OUT
ԙ S-Video terminal
pin (22)
Y_OUT
pin (27)
C_OUT
Ԛ Composite
pin (25)
V_OUT
Check the line between CN2302 and IC2301.
NO
Check the SUB_PC_5V line.
Is the SUB_PC_5V signal fed to pins (7) and (21) of IC2301?
NO
YES
YES
FLOW CHART No.1
BD-HP21U/S/H/A/X/RU/SB,BD-HP50U/X
2 – 7
The reproduced audio signal does not come from each audio output terminal.
Is the audio signal outputted from J2405?
YES
NO
Check the pattern up to J2405.
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 J2405?
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
BD-HP21U/S/H/A/X/RU/SB,BD-HP50U/X
2 – 8
[3] OPERATION
(BD-HP21 Series)
The remote controller does not function.
The main unit controls function, but the remote controller
controls fail to function.
controls fail to function.
YES
YES
Check the line between pin (1) of RMC1201 and pin (25) of IC2504.
Check the remote control codes 1, 2 and 3.
Using the remote controller, is the "L" pulse signal outputted
from pin (1) of RMC1201?
from pin (1) of RMC1201?
Is the "L" pulse signal inputted to pin (25) of IC2504?
Replace RMC1201 or the remote control receiver.
NO
NO
Is the remote control code as specified?
NO
YES
Is the 5V voltage applied to pin (3) of the RMC1201 remote
control receiver?
control receiver?
Check the AT_5V line.
NO
YES
Check IC2504. Replace it as required.
YES
FLOW CHART No.1
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