Haier 29T9D, Service Manual, Page: 32 / 73

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10. Maintenance Service and Trouble Shooting
a. TROUBLESHOOTING PROCESS
Grating off
Abnormal Normal
Normal
Abnormal None
Check +B
Disconnect R214 to
check main voltage
Check lamp filament,
release and grating voltages
Check R415, R505
and R526
Check V403, T401
Check V402
Check pin 33 of
N201 for output
Check CRT
cathode voltage
Check N201 for
R, G and B
signal output
Check TDA6107Q
and peripheral circuit
Check TDA9373
voltage
Check for short between
output voltage and ground
Check for 300V voltage
Check N801 for
peripheral circuit
Maintenance Service and Trouble Shooting