Panasonic KX-NS520RU (serv.man2) Service Manual ▷ View online
25
KX-NS520RU
Phone Call (continued)
26
KX-NS520RU
2
Flash ROM Test NG2
(U-BOOT Error)
SDRAM Address Bus Test NG
SDRAM Data Bus Test NG
SDRAM Memory Cell Test NG
FPGA Diag Test NG / Code Load NG
Check SDRAM Address signals
SDRAM(IC102/103)
DDR_A[**],DDR_BA[2:0]
Check SDRAM Data signals
SDRAM(IC102/103)
DDR_D[15:0]
SDRAM Memory Cell Failure
Repair SDRAM Devices
(IC102/103)
Repair Flash ROM (IC203)
FPGA LSI Failure
Repair FPGA (IC201)
According to the table (LED Check List), please find the failure point.
RED Blink x 2
RED Blink x 3
RED Blink x 4
RED Blink x 5
RED Blink x 6
27
KX-NS520RU
28
KX-NS520RU
9.1.2.
Battery Alarm
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