Haier HT-2180 Service Manual page 19

2.
Check heater voltage
Normal
Check all
voltages of pins
at X602
Normal
There is
breakdown in
CRT broad
Check the
electrode
V411
V411 is rosin joint or
broken
Normal
Check the horizontal oscillation
circuit of Z280 N201 and N201
No raster
Check if G2 voltage on CRT board is normal
Normal
Abnormal
The heater
resister
broken.
Abnormal
Check circuit
between pin18
pin20 in N201
connector
voltage of
Lower
Check if FBT
V411or C415
leakage of electricity
external
Maintenance Service and Trouble shooting
Check the base electrode voltage of V444
Normal
is
Check the voltage betwecn
bace electrode
connector electrode of v411
Yes
There is breakdown in horizontal
drive grade, Check V444 T401
R437
T402
C416 are
Check if pin 28
voltage
N201 is normal
18
Abnorma
Abnormal
Check
and
between pin 32 at N210
and H drive grade
No
Normal
Rechange
9V at components
remedy
circuit.
Abnormal
Check 9V power
the circuit
Abnormal
bad
or
content