DOWNLOAD Panasonic KX-TU301RUME Service Manual ↓ Size: 1.99 MB | Pages: 46 in PDF or view online for FREE

Model
KX-TU301RUME
Pages
46
Size
1.99 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / EASY USE MOBILE PHONE
File
kx-tu301rume.pdf
Date
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13
KX-TU301RUME
8 Troubleshooting Guide
8.1.
Troubleshooting Flowchart
Cross Reference:
Check Power (P.14)
Check Battery Charge (P.14)
Check Handset Transmission (P.18)
Check Handset Reception (P.18)
Check GSM Link (P.15)
Check GSM RF part (P.17)
Not working
Check Power
Power ON Handset
Battery Charge
GSM Link
GSM Range
Handset Voice Transmission
Handset Voice Reception
Check Battery Charge
Check GSM Link
Check GSM RF Part
Check Handset Transmission
Check Handset Reception
NG
No Link
No voice
No voice
OK
Vibrator
Check Vibrator
No vibrate
OK
OK
OK
OK
OK
No Charge
14
KX-TU301RUME
8.1.1.
Check Power
8.1.1.1.
Handset
Cross Reference:
Power Supply Circuit (P.8)
8.1.2.
Check Battery Charge
8.1.2.1.
Handset
Cross Reference:
Check Power (P.14)
Charge Circuit (P.9)
8.1.2.2.
Charger Unit
Cross Reference:
Power Supply Circuit (P.10)
Is the battery inserted to BAT+ 
and BAT-?
Is the voltage of BAT 3.5V more?
No
Yes
Check the battery and around BAT+ and BAT- 
are not shorted
Is the voltage of VRTC about 
2.0V?
Yes
Is the voltage of VIO about 2.85V?
Check Power Supply Circuit.
No
Is the voltage of VSIM about 
2.85V or 1.8V?
Insert TEST SIM card.
Check Fuse(F1) is shorted
Yes
Yes
Yes
No
No
Replace with a new Circuit Board.
Yes
Is Check Power OK?
Is CDT(R5) about 2V at charge 
state? 
No
Yes
Check Charge Circuit.
No
Check Power
Plug in the AC Adaptor (PNLV226CE).
Charge Handset on Charger Unit.
Check Handset.
Is the voltage of charge contacts about 4.5V or more?
No
Check Charge Contacts at Charger Unit from 
mechanical point of view.
Yes
Check Power Supply Circuit 
of Charger Unit.
Yes
15
KX-TU301RUME
8.1.3.
Check GSM Link
Cross Reference:
Power Supply Circuit (P.8)
NO
YES
YES
YES
NO
NO
NO
Check around Power Supply Circuit.
Is there GSM tester ?
Is the voltage of VRTC about 2.0V?
Refer to Check Point...(A).
Insert TEST SIM card.
Is the voltage of VSIM about 2.85V or 1.8V?
Is the voltage of VIO about 2.85V?
Refer to Check Point...(B).
NO
YES
Does Handset make link with GSM tester?
Refer to Check Point...(G).
...
YES
YES
NO
NO
Replace with a new Circuit Board.
Is the Phase error (RMS) of GSM 900MHz OK?
Refer to Check Point...(K).
Is the transmit power of GSM 900MHz OK?
Refer to Check Point ...(J).
NO
YES
YES
Is the Phase shift error (Peak) of GSM 900MHz OK?
Refer to Check Point...(L).
... Continued to the next page.
16
KX-TU301RUME
NO
YES
YES
YES
NO
NO
NO
Replace with a new Circuit Board.
Is the RX Quality of GSM 900MHz OK?
Refer to Check Point...(P).
Is the RX Level of GSM 900MHz OK?
Refer to Check Point...(M)
Is the BER (Bit Error Rate) of GSM 900MHz OK? 
Refer to Check Point ...(O).
Is the FER (Frame Error Rate) of GSM 900MHz OK? 
Refer to Check Point...(N).
NO
YES
YES
Is the transmit power of GSM 1800MHz OK? 
Refer to Check Point...(Q).
NO
YES
Is the Phase error (RMS) of GSM 1800MHz OK? 
Refer to Check Point...(R).
NO
YES
Is the Phase shift error (Peak) of GSM 1800MHz OK? 
Refer to Check Point...(S).
NO
YES
Is the RX Level of GSM 1800MHz OK? 
Refer to Check Point...(T).
NO
YES
Is the FER (Frame Error Rate) of GSM 1800MHz OK? 
Refer to Check Point...(U).
NO
YES
Is the BER (Bit Error Rate) of GSM 1800MHz OK? 
Refer to Check Point...(V).
NO
Is the RX Quality of GSM 1800MHz OK? 
Refer to Check Point...(W).
...
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