8-2
A0C70TR
P-ON+5V is not output.
FLOW CHART NO.6
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?
No
AL+7.5V 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 D637, C628 and their periphery circuit, and
service it if defective.
Is approximately 7.5V voltage supplied to the cathode
of D637?
AL+15V(1) 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 A0C72EP
Page 13: ...4 2 A0C72_73DC 2 Rear Cabinet 1 Stand Assembly S 3 S 2 S 2 S 2 S 2 S 2 S 4 S 5 S 1 Fig D1...
Page 36: ...10 4 A0C72SCM2 Main 2 Schematic Diagram...
Page 37: ...10 5 A0C72SCM3 Main 3 Schematic Diagram...
Page 38: ...10 6 A0C72SCM4 Main 4 Schematic Diagram...
Page 39: ...10 7 A0C72SCF Function Schematic Diagram...
Page 40: ...10 8 Jack Schematic Diagram A0C72SCJ...
Page 50: ...10 18 Jack CBA Function CBA Top View Function CBA Not Used Jack CBA BA0C70F01021...
Page 51: ...10 19 Jack CBA Function CBA Bottom View BA0C70F01021 Function CBA Not Used Jack CBA...
Page 75: ...LH850 M22 LH851 M22 A0C72EP A0C73EP 2010 07 31...
