Panasonic KX-NT700RU Service Manual ▷ View online
29
KX-NT700RU
7.2.2.
Key Test
This test mode is checking of KEYs.
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KX-NT700RU
7.2.3.
Hardware Test
Mode that specifies a fault part of hardware.
The test result list is displayed only at Fail.
The test result list is displayed only at Fail.
Hardware test result list
Items
Test content
Confirmation matters
VOIP
Check if VOIP-DSP (IC101) is normal or not.
Verify the state of DSP with built-in VoIP.
Verify the state of DSP with built-in VoIP.
Check the soldering of IC101.
Resolder or replace parts as needed.
Resolder or replace parts as needed.
Sub-CPU Com
Check SIO communication between Sub-CPU (IC1 -
IC101).
IC101).
Confirm the waveform of SIO signal at Pin of IC101.
See the communication waveform(17).*
See the communication waveform(17).*
DSP Com
Check SPI communication between TI-DSP (IC201 -
IC101).
IC101).
Confirm the waveform of SPI signal at Pin of IC101.
See the communication waveform(18).*
See the communication waveform(18).*
DSP
Check on TI-DSP (IC201) diagnosis result.
Verify the internal state of TI-DSP.
Verify the internal state of TI-DSP.
Check the soldering of IC201.
Resolder or replace parts as needed.
Resolder or replace parts as needed.
IO
Register check of PHY (IC505) and RTC (IC406).
Check the soldering of IC505 and IC406.
Resolder or replace parts as needed.
Confirm the waveform of MDIO signal at Pin of IC101and
SIO signal at Pin of IC101.
See the communication waveform(19),(20).*
Resolder or replace parts as needed.
Confirm the waveform of MDIO signal at Pin of IC101and
SIO signal at Pin of IC101.
See the communication waveform(19),(20).*
BATTERY
Check on voltage of lithium battery (BAT401).
Makes a reply about whether the voltage shows the larger
value than the regulated one (2.2V) or not.
Makes a reply about whether the voltage shows the larger
value than the regulated one (2.2V) or not.
Check the soldering of IC407, BAT401 and soldering thick-
ness.
Resolder or replace parts as needed.
ness.
Resolder or replace parts as needed.
SDRAM
Execute RW test of VOIP-CPU SDRAM.
(Partial area of SDRAM)
(Partial area of SDRAM)
Check the soldering of IC103.
Resolder or replace parts as needed.
Resolder or replace parts as needed.
SRAM
Execute RW test of VOIP-CPU SRAM.
(Partial area of SRAM)
(Partial area of SRAM)
Check the soldering of IC410.
Resolder or replace parts as needed.
Resolder or replace parts as needed.
FLASHROM
Execute RW test of VOIP-CPU FLASHROM.
(Partial area of FLASHROM)
(Partial area of FLASHROM)
Check the soldering of IC102.
Resolder or replace parts as needed.
Resolder or replace parts as needed.
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KX-NT700RU
7.2.4.
Beamforming Test
Mode to initialize a beam former function.
When you open the housing, execute “Mic Line Test” and make a confirmation that there is no error in the MIC block. Then, be sure
to execute this “Beamforming Test” to relearn the beam former.
*Execute this by arranging KX-NT700RU on the desk in the room that has no ambient noise.
Since the white noise is output from the speaker three seconds after the execution of the command, do not obstruct the speaker or
MIC with hands or objects.
When you open the housing, execute “Mic Line Test” and make a confirmation that there is no error in the MIC block. Then, be sure
to execute this “Beamforming Test” to relearn the beam former.
*Execute this by arranging KX-NT700RU on the desk in the room that has no ambient noise.
Since the white noise is output from the speaker three seconds after the execution of the command, do not obstruct the speaker or
MIC with hands or objects.
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KX-NT700RU
7.2.5.
Mic Line Test
Mode to confirm breakdown of MIC and the MIC block by the ear.
*Note that this is not the test to judge the quality of the MIC block.
When “Mic Line Test” is executed, the white noise output from the speaker is recorded by each MIC, and the recorded white noise
is output from the speaker one by one.
*Note that this is not the test to judge the quality of the MIC block.
When “Mic Line Test” is executed, the white noise output from the speaker is recorded by each MIC, and the recorded white noise
is output from the speaker one by one.
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