80
KX-TGP500B04/KX-TPA50B04
10.2. Failure Analysis of DSP, FLASH ROM and RAM (Base Unit)
It is difficult to find the defective parts causing operation failure in this unit because DSP, FLASH ROM and RAM are connected
to the same bus line.
This unit has two ports as the means to watch the operation of DSP, FLASH ROM, RAM, etc. during the start-up process. The
following conditions can be confirmed with these two ports.
1. The FLASH ROM in which the Program is written is working correctly.
2. RAM is working correctly.
3. The Boot of DSP is working correctly.
4. Being connected to another Bus line, the FLASH ROM in which Data is written is working correctly.
The operation from turning ON to the final judgment with a normal unit is given below.
OK Waveform
Note:
(*1) Refer to
Circuit Board (Base Unit_Main)
(P.113).
Summary of Contents for KX-TGP500B04
Page 2: ...2 KX TGP500B04 KX TPA50B04 ...
Page 23: ...23 KX TGP500B04 KX TPA50B04 4 12 Signal Route ...
Page 55: ...55 KX TGP500B04 KX TPA50B04 9 4 IP Reset ...
Page 65: ...65 KX TGP500B04 KX TPA50B04 10 1 4 3 1 Switching Hub Check ...
Page 66: ...66 KX TGP500B04 KX TPA50B04 10 1 4 3 2 Repeater Hub Check ...
Page 67: ...67 KX TGP500B04 KX TPA50B04 10 1 4 4 Router Check ...
Page 68: ...68 KX TGP500B04 KX TPA50B04 10 1 4 5 Modem Check ...
Page 69: ...69 KX TGP500B04 KX TPA50B04 10 1 4 6 IP Duplication Check ...
Page 75: ...75 KX TGP500B04 KX TPA50B04 10 1 6 5 RF DSP Interface Signal Wave Form FP Base ...
Page 76: ...76 KX TGP500B04 KX TPA50B04 PP Handset ...
Page 77: ...77 KX TGP500B04 KX TPA50B04 ...
Page 78: ...78 KX TGP500B04 KX TPA50B04 ...
Page 81: ...81 KX TGP500B04 KX TPA50B04 ...
Page 83: ...83 KX TGP500B04 KX TPA50B04 NG Examples Program Flash IC503 NG Wave RAM IC505 NG Wave ...
Page 84: ...84 KX TGP500B04 KX TPA50B04 Data Flash IC502 NG Wave ...
Page 86: ...86 KX TGP500B04 KX TPA50B04 11 1 2 Handset ...
Page 87: ...87 KX TGP500B04 KX TPA50B04 11 1 3 Charger Unit ...
Page 88: ...88 KX TGP500B04 KX TPA50B04 11 2 How to Replace the Handset LCD ...
Page 89: ...89 KX TGP500B04 KX TPA50B04 ...
Page 116: ...116 KX TGP500B04 KX TPA50B04 Note ...