Read Panasonic KX-NSX1000 / KX-NSX2000 Service Manual online
21
KX-NSX1000/KX-NSX2000
9.4.
FPGA
Start
16.384MHz
Clock signal
is OK ?
Open the top cover
Power on
Use a digital oscilloscope
Power on
Use a digital oscilloscope
Preparation
Reset signal
is inactive ?
FPGA Boot has
been completed ?
End
Repair IC19,X1
related circuit
Yes = Clock signal appears on R691
(See waveform No.033)
No
Repair IC2
related circuit
Yes = IC2-4pin
(BUF_PCIE_RSTn_FPGA) is High Level
(BUF_PCIE_RSTn_FPGA) is High Level
No
Yes = CN1 - A85pin(FPGA_INIT_DONE) is High Level
No
Check SPI Flash Interface circuit
Power OFF to ON
IC20-16pin
DCLK output OK?
Repair IC17
IC20-7pin
CS output OK?
IC20-8pin
Data output OK?
No
No
Yes
Yes
Repair IC20
(See waveform No.071~No.074)
The following signals, can be
observed only immediately after
the power is turned on.
observed only immediately after
the power is turned on.
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