Philips 32MF338B/27, Руководство по обслуживанию

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FUZ2.0U LA 27
P-ON+9V is not output.
FLOW CHART NO.15
Yes
No
Is approximately 13V voltage supplied to the
collector of Q801?
Is approximately 10V voltage supplied to the
base of Q801?
See FLOW CHART No.6
No
See FLOW CHART No.10
Yes
Replace Q801.
+3.0V(1) is not output.
FLOW CHART NO.14
Is approximately 3V voltage supplied to the
cathode of D640?
Check if there is any leak or short-circuit on
the loaded circuit, and service it if defective..
Yes
Check C642, D640 and their periphery circuit, and
service it if defective.
No
When pressing each switches (SW108, SW109,
SW110, SW111, SW112, SW113, SW114) do the
voltage of Pin(1) on CN301 increase?
Yes
No
The key operation is not functioning.
FLOW CHART NO.16
Are the contact point and installation state of the key
switches (SW108, SW109, SW110, SW111,
SW112, SW113, SW114) normal? Re-install the switches (SW108, SW109, SW110,
SW111, SW112, SW113, SW114) correctly or
replace the poor switch.
No
Check the switches (SW108, SW109, SW110,
SW111, SW112, SW113, SW114) and their
periphery, and service it if defective.
Yes
Replace Digital Main Board Unit.