TROUBLESHOOTING: High Audio Speaker Test (Continued)
High Audio Speaker Test (Continued)
No
Measure the output of SPKR+
to ground and SPKR- to
ground(C795,C740,C771,C728)
Output should be 210mVrms
Check continuity between
E700 to TP_RIGHT_P,E701
toTP_RIGHT_N,E702 to
TP_LEFT_P,E703 to
TP_LEFT_N
Correct Voltage
from both Plus and
Minus outputs?
Yes
Check the circuit around
Audio PA circuit( U700)
Continued
from previous
Page
A
Check if input
signals from C788
C789
No
Yes
Check RX Clock
test points for a
digital signal.
Are RX and
Clock signals
correct?
Replace
ROADRUNNER
(U700B7) and retest.
No
Check ZEUS-U804
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