Magnavox 19MF301B Wartungshandbuch PDF herunterladen (Seite 38)

8-7 FL11.0BTR

Check Q202, Q203, D203, P-ON-H1 line and their

peripher

y circuit, and service it if defec

tive.

PANEL+24.5V is not output.

FLOW CHART NO.6

Is approximately +30V voltage supplied to the collector

of Q205?

Ye s

See FLOW CHART No.5 <INV+31V is not output.>

Replace Q201.

Is approximately +13V voltage supp

lied to the

base of Q201?

Ye s

Check Q202, Q203, D201, D202, D210 and their

periphery circuit, and ser

vice it if defective.

PANEL+13V is not output.

FLOW CHART NO.7

Is approximately

+15V voltage supp

lied to the

collector of Q201?

Ye s

Check C631, D

631, D668 and their periphery circuit,

and service it if de

fective.

P-ON+7V is not output.

FLOW CHART NO.8

Is approximately +

7V voltage supplied to the

cathode of D641?

Check C641, D641 and their periphery circuit,

and service it if de

fective.

Ye s

Check if there is any leak or short-circuit on

the loaded circuit, and service it if defective.

See FLOW CHAR

T No.8 <P-ON+7V is not output.>

P-ON+5V is not output. (PANEL+13V is outputted normally.)

FLOW CHART NO.9

Is approximately +

6.8V voltage supplied to the

collector of Q635?

Is approximately +6V voltage supp

lied to the

base of Q635 and the ba

se of Q636?

Ye s

Check D659 and

their periphery circuit, and service

it if defective.

Replace Q635 and Q636.

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