Emerson LD195EM8, Service Manual, Page: 33 / 90

9-5 A84N0TR
LCD+3.3V is not output.
FLOW CHART NO.21
Is approximately 3.3V voltage supplied to the
emitter of Q917?
P-ON+9V is not output.
FLOW CHART NO.19
Is approximately 20V voltage supplied to the
collector of Q918?
Is approximately 10V voltage supplied to the
base of Q918?
Is approximately 7V voltage supplied to the
collector of Q901?
No
Yes
Yes
Yes
Check Q916, Q923, P-ON-H1 line and there
periphery circuit, and service it if defective.
Check P-ON-H1 line and there periphery
circuit, and service it if defective.
Check C942, D932 and there periphery
circuit, and service it if defective.
No
Check IC905 and there periphery circuit, and
service it if defective.
Yes
See FLOW CHART No.17
See FLOW CHART No.17
No
No
See FLOW CHART No.20
No
No
AL+3.3V is not output.
FLOW CHART NO.20
Is approximately 22V voltage supplied to the
Pin(1) of IC905?
Yes
Is "H" signal (approximately 0.7V) inputted to
the base of Q928?
Yes
Check Q917, Q928 and there periphery circuit,
and service it if defective.
Check IC909, Q901 and there periphery circuit,
and service it if defective.
Replace Q918.
Replace Q934.
Is approximately -9V voltage supplied to the
base of Q934?
Yes
No
See FLOW CHART No.7
No
LCD-6.8V is not output.
FLOW CHART NO.22
Is approximately -10V voltage supplied to the
Anode of D932?
Yes