Sharp Aquos LC-32AX3X, Руководство по обслуживанию

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LC-32AX3H/M/X
LC-37AX3H/M/X
27
TROUBLE SHOOTING TABLE
(Continued)
No audio hear
d (2)
No HDMI sound hear
d.
No sound fr
om the HDMI SOUND input terminal.
No HDMI sound heard (Exter
nal input sound heard in UHF/VHF reception)
NO
YES
Ref
er to "<INPUT 4> in No e
xter
nal image onscreen (HDMI)".
Does the HDMI image appear onscreen?
Are there the SDO
,
WS
, SCK, MCLKIN and MCLK
OUT signals at pins (84), (85), (86), (87) and (88) of
IC1904 (HDCP SLI), respectiv
ely?
NO
YES
YES
Chec
k IC1904 and its per
ipher
al circuits
.
NO
Chec
k IC1905 and its per
ipher
al circuits
.
Is there the audio signal output at pins (10) and (11) of IC1905 (D
A
C)?
YES
Is there the L-ch audio signal input from pin (3) of e
xter
nal input ter
minal J1900 (HDMI SOUND IN) to
pin (3) of IC1906? Is there the R-ch audio signal input from pin (2) of e
xter
nal input ter
minal J1900 (HDMI SOUND IN) to
pin (7) of IC1906?
NO
YES
Chec
k the control signal at pin (2) of IC1906 and its per
ipher
al circuits
.
Are there the L-ch and R-ch audio signal outputs at pins (7) and (1) of IC2505 (AMP), respectiv
ely?
NO
YES
Chec
k IC2505 and its per
ipher
al circuits
.
Are there the L-ch and R-ch audio signal inputs at pins (47) and (48) of IC2501, respectiv
ely?
YES
*A:
Go bac
k to "No audio heard (1)".
Are there the L-ch and R-ch audio signal outputs at pins (15) and (11) of IC1906 (SELECT
OR), respectiv
ely?