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and overviews
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Fault finding trees, diagrams and overviews
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Remark : In normal operation the Red LED lights in half intensity and in standby-mode the LED lights in full intensity
L9.1E
17
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Fault finding trees, diagrams
Connect a pattern generator to the arial input. Set Patt.gen. to 475,25 MHz, colourbar, stereosound, PAL B/G (for France SECAM l). Put the Mainsswitch : on. In normal conditions the set will start with the Red LED blinking for one second in full intensity, one time then after a few seconds more in half intensity while the picture and sound will appear.
1 1 1 1 Does the red LED blink for one second in full intensity, one time ?
Yes Yes No
Does the red LED light in full intensity continuously ?
No
Is the Power supply hicking ?
No
Any secondary voltage present ?
No
(A1); present?
Yes
No
Check/Replace (A1); SW0231,F1500,D6505 Note: If F1500 is defective, then also check R3503
Yes
1 7 1 3
1 1 1 D Do picture and sound appear properly ?
No
A
Yes
Yes
Ensure communication with the RC, Check/Replace (A8);IC7680 Put the set into the Service Default Mode either via the DST or by pressing the buttons on the RC in the following order :062596