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23
(6) NTSC channel no picture
(7) ATSC channel no picture
Note :
The I2C bus line control of TUNER is switch through the bus line of N228, so after checking the power
supply and peripheral circuit of TUNER226, it is still no picture in NTSC and ATSC channel, please
check N228 emphatically.
Check if pin4 of TUN1 output
signals?
Yes
No
Yes
Check if CB154 outputs
signals?
Check TUN1 power supply and
the peripheral circuit.
Check N100
and its
periphery circuit
Check if pin20/21 of TUN1
output signals?
Yes
No
Yes
No
Check if the crystal is
normal? If output signal?
Check TUN1 power supply and
the peripheral circuit.
Check socket N100 and the
periphery.
Check the crystal and
periphery circuit.
Summary of Contents for PH-50HA31
Page 1: ...PDP TELEVISION PH 50HA31...
Page 14: ...12 IC block diagram 1 ZR39760...
Page 16: ...14...
Page 27: ...602 L37HA37 01 11...
Page 28: ...602 32HA37 01 602 32HA37 01 602 32HA37 01 602 L37HA37 01 11...
Page 29: ...602 L37HA37 01 11...
Page 30: ...602 L37HA37 01 11...
Page 31: ...602 L37HA37 01...
Page 32: ...602 L37HA37 01 11...
Page 33: ...602 L37HA37 01 11...
Page 34: ...602 L37HA37 01 11...
Page 35: ...602 L37HA37 01...
Page 36: ...602 L37HA37 01 11...
Page 37: ......
Page 38: ......
Page 40: ...APPENDIX EXPLODED VIEW PH50X31...
Page 42: ...9350HA3110 Ver 1 0...