MITSUBISHI LT2220
Instrukcja Serwisowa

MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
3-A (P*)

3-A (P*) YES Is the signal below available at pins 5, 6 of J711 (control signals of IC701 and IC710 and IC100 ) and 10 of J711 (control signals of IC710) and 28, 31 of IC300 (control signals of TU1A0) ? 5, 6 of J711, 3Vp-p NO IC300 (and peripheral circuits) are out of order.(PWB-MAIN)

v

28, 31 of IC300 10 of J711 YES

3Vdc

Is sound signal outputted correctly at the pins 10, 12 ,8 of J710 connector? ? It checks that a certain signal is outputting in the voltage range of 1V. YES IC701 and IC710 and IC711 and IC712 (and peripheral circuits) are out of order. (PWB-MAIN)

NO

IC100 (and peripheral circuits) are out of order.(PWB- SET(SUB))