Shivaki STV-22LED3, Service Manual

Page: 52 / 57

PC Channel
8.Function Trouble 8.Function Troubleshooting (PC) (PC)
PC Channel
Picture is
not in center
Color fade
Image
Dithering
No signal
Check if the R,G,B input signals
of U1_PIN152~156 are normal?
Check if the VS,HS input signals
of U1_PIN150,151 are normal?
Y N Y N
Do ‘Auto adjust’
process
The data of
white balance is
wrong,
Check the
circuit between
U1 PIN152~1
Check the circuit
between
U1 PIN150,151
OSD setting
doesn’t match,
reset again or
Check the circuit
between
U1 PIN150,151
process
wrong,
initial EEPROM
setting
U1_PIN152 1
56 and R.G.B
signals of
CN24
U1_PIN150,151
and VS.HS
signals of CN24
input
mode doesn’t
support.
_ ,
and VS.HS
signals of CN24
第 52 页，共 57 页