8-2
A0CN0TR
P-ON+5V is not output.
FLOW CHART NO.6
Yes
Yes
No
Is approximately 6V voltage supplied to the base of
Q616?
AL+3.3V is not output.
FLOW CHART NO.5
Yes
No
Is approximately 5V voltage supplied to the collector
of Q605?
Check D637, C628 and their periphery circuit, and
service it if defective.
Check D637, C628 and their periphery circuit, and
service it if defective.
Check Q607, Q610, D653, P-ON-H2 line and their
periphery circuit, and service it if defective.
Yes
No
Is approximately 4V voltage supplied to the base
of Q605?
Check D634 and their periphery circuit, and
service it if defective.
Replace Q605.
Is approximately 7.5V voltage supplied to the collector
of Q616?
Replace Q616.
No
AL+33V is not outputted.
FLOW CHART NO.7
Yes
No
Check if there is any leak or short-circuit on the
loaded circuit, and service it if defective.
Check D619, D623, C616 and their periphery circuit,
and service it if defective.
Is approximately 33V voltage supplied to the cathode
of D619?
AL+15V is not outputted.
FLOW CHART NO.8
Yes
No
Check if there is any leak or short-circuit on the
loaded circuit, and service it if defective.
Check D612, D620, C613 and their periphery circuit,
and service it if defective.
Is approximately 15V voltage supplied to the cathode
of D612?
Summary of Contents for LH850-M19
Page 13: ...4 2 A0CN2DC 2 Rear Cabinet 1 Stand Assembly S 3 S 2 S 2 S 2 S 2 S 2 S 4 S 4 S 1 Fig D1...
Page 36: ...10 4 A0CN2SCM2 Main 2 Schematic Diagram...
Page 37: ...10 5 A0CN2SCM3 Main 3 Schematic Diagram...
Page 38: ...10 6 A0CN2SCM4 Main 4 Schematic Diagram...
Page 39: ...10 7 A0CN2SCF Function Schematic Diagram...
Page 71: ...LH850 M19 LH851 M19 A0CN2EP A0CN3EP 2010 09 15...
