Sharp Aquos LC 15B2UA, Руководство по обслуживанию

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27
LC-15B2UA
LC-15B2UB
TROUBLE SHOOTING TABLE
(Continued)
No sound fr
om
speaker
s
Yes
No
Is pin (53) of IC2001 at
L
?
Check all the settings on the microprocessor
s adjust process menu.
No sound
No
Are outputs at pins (1) and (7) of IC3301 as specified?
Yes
No
Are inputs at pins (2) and (4) as well as outputs at pins (8) and (12), all of IC3305, as specified?
Muting ef
fect is
on. Check the FSMUTE line.
Check IC3301, IC3302, IC3303 and their peripheral parts.
Check the line in question, IC3301 and its peripheral parts.
Yes
Check the speakers and their peripheral parts.
No sound fr
om
headphone
Yes
No
Is pin (55) of IC2001 at
L
?
Check the headphone and its peripheral parts.
Check Q2007, J3500, harness and their peripheral parts.
No sound fr
om output
line
Yes
No
Is pin (58) of IC2001 at
L
?
No
Are outputs at pins (14) and (15) of IC3501 as specified?
Yes
Check the line in question.
Check the LMUTE line.
Check IC3501, IC3304 and its peripheral parts.
TV sound failure
Yes
No
Is output at pins (15) and (16) of tuner as specified?
No
Is input at pin (67) of IC3304 as specified?
Yes
Check IC3304, X3301 and their peripheral parts.
Check the tuner and its peripheral parts.
Check Q3201, Q3202 and their peripheral parts.
Yes
No
Are input and output of IC3304 as specified?
Check IC3304 and its peripheral parts.