Specifications

73
TPF1.3A LA
1.No Work/LED is off
Check if
power switch
is normal
No
Replace power switch
Yes
Check if AC
adaptor output
=16V
No
Replace power adaptor
Check the inverter board
Yes
2.No raster/picture
too dim
Check if 1001 on
scaler board
pin1,2,3=16V
pin 5=0~4.7V
Check working
voltage, backlight
control signal and
brightness control
signal on scaler board
No
Yes
Check if 1302 on
scaler board
pin3=3.3V
No
Check IR board
Check if working voltage
pin3=3.3Vof7303
3307=3.3V 3313=5V
1304 Pin1=5V
Check circuit around
each regulator and
eliminate short and
open situation
3.No picture/LED
is green
No
Check if clock source
1401,1301,1621
Replace 1401,1301,1621
No
Ye
s
No
Check if scaler 7401
RGB,clk,H/V and
DE signal output
48 bits TTL
Try to replace
CPUorCPU'Sflash Rom
CPU'S EEPROM
Painter
Painter's EEPROM
Yes
No
Check resistors-
network
Replace bad resistors-
network
Yes
Replace LVDS cable
Replace LCD panel
No
4.No D-Sub picture
Check if H/V
signals input to
schmitt trigger
7201
No
Check input path
Yes
Check if schmitt
trigger 7201
output H/V signals
to JAGASM
No
Replace 7201
Yes
Go to 3.No picture/LED is green
Repair Flow Chart
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