
EN 17
3139 785 30981
5.
Upgrade Software & Repair Chart
5.2.7 No Video In Only
Check Supply on digital board
Check Clock At
T432 & T461 = 14.318MHz
Replace VIP (7401) IC
Check Video Input
T524, T526, T527, T528, T529, T530, T531,
T532 T533 T535
Check respective i/p test point
of video in at analog board
Replace Crystal 1461
NO
OK
OK
OK
NO
Replace Digital Board
NO
5.2.8 Tuner Not Functioning
Check Voltage
I119 = 33V
F101 = 5V
Check I100 & I102 On I2C
F104 for AFT signal = DC level
Scan direct –changing of tuner
1 8 V-3 6V
Direct access tuner to any channel.
If there are video and no audio. Check MSP Xtal
Replace Tuner
Alignment Out.
Replace Tuner
NO
NO
OK
OK
OK