Karaoke Circuit - Hitachi DV-P250U Service Manual

KARAOKE CIRCUIT

(Only available at DVD-5500/DVD-5300 models)
24
NO MIC SOUND
IS THERE DISC
S O U N D ?
Yes
A R E
SIGNAL AT IC2401
1 7 ?
Yes
A R E
SIGNAL AT IC2404
5 8
?
Yes
CHECK IC2404,
IC1201, IC1505 ETC.
NO ECHO/KEY
C O N T R O L E F F E C T
R E M O T E
C O N T R O L A C T I O N
O K ?
Yes
CHECK IC1201 ETC.
N O S O U N D O U T P U T
No


C H E C K R O U T E
FROM MIC JACK
No
J1763/1764 TO
IC2401 3 5


CHECK IC2401 ETC.
CHECK MIC
No
VOLUME RV1762,
RV1763 ETC.
C H E C K R E M O T E
C O N T R O L L E R A N D
No
R E C E I V E C O N T R O L
CIRCUIT ETC.
Chapter 1