Troubleshooting Guide - Toshiba 17HLV85 Service Manual

(LCD SECTION)
POWER DOES NOT TURN ON
IS F3801 BROKEN ?
NO
IS THERE VOLTAGE
OF 2 PIN OF IC3803
AT11.8V AND 4 PIN
AT5V ?
YES
IS CD2200
CONNECTED ?
YES
IS THERE VOLTAGE
AT PINS 1~6, 10 AND
11 OF CD3804 ?
YES
AT STATE OF POWER
KEY PUSHING, IS THERE
LOW AT PIN 93 OF IC101 ?
NO
CHANGE SCALER PCB.

TROUBLESHOOTING GUIDE

YES
NO
NO
NO
YES
E-1
CHANGE F3801.
CHECK IC3803, AND AT 5V
LINE.
CONNECT CD2200
CHECK Q3804, IC3804, IC3805,
IC3806 AND IC3809.
CHECK IC101.