Akai ATV-350R, Руководство по обслуживанию

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AKAI ATV-350R Maintenance Manual
3. With Sound, With Light and Black Screen
Check whether power supply of LA76810
(25) (18) pins is normal or not
Whether the earthing resistance of
LA76810 (29) pin is normal or not.
Check power
supply
Check whether LA76810 (13) (12)
(11) pins are normal or not
Yes
No
Yes
Yes
No
No
Check whether line field pulse
of CPU is normal or not.
Check whether the copper sheet of line field synchronous
pulse loop is open or short-circuited or not.
Change 3Y26
Whether change
CPU is OK.
Change the resistance
Yes
No
No
Check the LA76810 line field
synchronous circuit.
No
Check LCD screen