Panasonic KX-TG5581RUB / KX-TGA551RUB Service Manual ▷ View online
33
KX-TG5581RUB/KX-TGA551RUB
9.1.5.
Check Handset Transmission
Cross Reference:
Signal Route (P.14)
9.1.6.
Check Handset Reception
Cross Reference:
How to Check the Handset Speaker or Receiver (P.56).
Signal Route (P.14)
Signal Route (P.14)
9.1.7.
Check Caller ID
Cross Reference:
Signal Route (P.14)
OK
Check MIC of Handset.
Check CDL TX (HANDSET) in Signal Route.
Check Handset Speaker in How to check the Handset
Speaker or Receiver.
Speaker or Receiver.
OK
Check CDL RX (HANDSET) in Signal Route.
Check Caller ID in Signal Route.
34
KX-TG5581RUB/KX-TGA551RUB
9.1.8.
Bell Reception
9.1.8.1.
Base Unit
9.1.8.2.
Handset
Cross Reference:
Telephone Line Interface (P.10)
Check Link (P.26)
How to Check the Handset Speaker or Receiver (P.56)
Check Link (P.26)
How to Check the Handset Speaker or Receiver (P.56)
Check around C54, C55, R36, R37.
When bell signal is coming, is there bell sound
signal at BBIC (IC7: 17,19)?
signal at BBIC (IC7: 17,19)?
NO
YES
When bell signal is coming, is there bell sound
signal at BBIC (IC7: 14)?
signal at BBIC (IC7: 14)?
Check around C3, C4, C5, C6, R3, R4, R5, R6,
C136, C137, R32, R33, R34, R35, C52, C53,
P1, C168, C42, C43,R42,R43
C136, C137, R32, R33, R34, R35, C52, C53,
P1, C168, C42, C43,R42,R43
NO
Does the bell sound from SPEAKER?
Check around SP+, SP- .
When bell signal coming, is there bell sound signal
at BBIC (IC1: 33, 35)?
at BBIC (IC1: 33, 35)?
NO
NO
YES
When bell signal coming, is there bell sound signal
at SP+, SP- ?
at SP+, SP- ?
YES
Check BBIC (IC1), C78, C79, C73, C72, D13,
D14, R208, R209
D14, R208, R209
NO
Check cable of SPEAKER and resistance value
of SPEAKER.
of SPEAKER.
35
KX-TG5581RUB/KX-TGA551RUB
9.2.
Troubleshooting by Symptom (Base Unit and Charger Unit)
If your unit has below symptoms, follow the instructions in remedy column. Remedies depend on whether you have DECT tester
(*1) or not.
(*1) or not.
Note:
(*1) A general repair is possible even if you don’t have the DECT tester because it is for confirming the levels, such as Acoustic
level in detail.
(*2) Refer to Check Point (Base Unit) (P.35)
level in detail.
(*2) Refer to Check Point (Base Unit) (P.35)
9.2.1.
Check Point (Base Unit)
Please follow the items below when BBIC or EEPROM or FLASH is replaced.
Note:
After the measuring, suck up the solder of TP.
*: The Setting Method of JIG (Base Unit) (P.46) is required beforehand.
The connections of simulator equipment are as shown in Adjustment Standard (Base Unit) (P.48).
*: The Setting Method of JIG (Base Unit) (P.46) is required beforehand.
The connections of simulator equipment are as shown in Adjustment Standard (Base Unit) (P.48).
You have DECT Tester.
(Model Number : CMD60)
Check item (A)-(I),(T).
Check item (A)-(I), (J)-(P),(T).
Check item (A)-(G),(Q),(T).
Check item (A)-(G), (J)-(P), (Q),(T).
-
Check item (J)-(P).
Check item (Q).
Check item (Q).
Check item (Q).
Check item (Q).
Check item (A)-(I), (S).
Check item (A)-(P), (S).
You cannot dial.
You cannot hear the caller's voice.
You cannot use handset a little away from base unit
even if the handset is within range of the base unit.
even if the handset is within range of the base unit.
The acoustic transmit level is high or low.
The acoustic reception level is high or low.
Base unit and handset do not link each other.
The unit cannot charge.
Check item (T).
Check item (T).
Remedy (*2)
Symptom
You don't have DECT Tester.
Items
Check
Point
Procedure
Check or
Replace Parts
(A)
3.0 V Supply
Confirmation
Confirmation
VDD3
1. Confirm that the voltage between test point VDD3 and GND is 2.85 V ± 0.2 V. IC2, C32, C36,
C86, C88, R91,
R93, L3, C602,
C38, R605,
R607, R608,
R609, R610,
R609, R610,
R612, Q602
(B)
1.8 V Supply
Confirmation
Confirmation
VDD1
1. Confirm that the voltage between test point VDD1 and GND is 1.8 V ± 0.02 V.
2. Execute the command “VDD”, then check the current value.
3. Adjust the 1.8V voltage of VDD1 executing command “VDD XX“(XX is the
2. Execute the command “VDD”, then check the current value.
3. Adjust the 1.8V voltage of VDD1 executing command “VDD XX“(XX is the
value).
Q8, C75, C614,
C61, IC7, R611
(C) Charge Pump 3.0V
Supply Confirmation
VDD5
1. Confirm that the voltage between test point VDD5 and GND is 3.0 V -0.1/+0.3
V.
IC7,C625
(D) Charge Pump 3.0V
Supply Confirmation
VDD4
1. Confirm that the voltage between test point VDD4 and GND is 3.0 V ± 0.2 V. IC7,C616, R620
(E)*
BBIC Confirmation
-
1. BBIC Confirmation (Execute the command “getchk”).
2. Confirm the returned checksum value.
2. Confirm the returned checksum value.
Connection of checksum value and program number is shown below.
IC7, X1, R77,
RA80
(F)* EEPROM Confirmation
-
1. EEP-ROM Confirmation (Execute the command "sendchar EPV").
2. Confirm the returned Value (Value for reference is written at "EEPROM C/
2. Confirm the returned Value (Value for reference is written at "EEPROM C/
SUM” in Software_Version_Table.xls).
IC7, RA402,
C51, R657,
IC401
(G)* BBIC Clock Adjustment
CLK
1. Confirm that the voltage between testpoint VDD4 and GND is less than 1.0 V.
2. Input Command “sendchar sfr”, then you can confirm the current value.
3. Check X’tal Frequency. (10.368 MHz ± 100 Hz).
4. If the frequency is not 10.368MHz ± 100Hz, adjust the frequency of CLK
2. Input Command “sendchar sfr”, then you can confirm the current value.
3. Check X’tal Frequency. (10.368 MHz ± 100 Hz).
4. If the frequency is not 10.368MHz ± 100Hz, adjust the frequency of CLK
executing the command “sendchar sfr xx xx (where xx is the value)” so that
the reading of the frequency counter is 10.368000 MHz ± 5 Hz.
the reading of the frequency counter is 10.368000 MHz ± 5 Hz.
X1, IC7, R430,
C305
checksum value
65DF
program number
DCQ1EN
ex.)
36
KX-TG5581RUB/KX-TGA551RUB
(H)* Hookswitch Check with
DC Characteristics
-
1. Connect Telephone Socket to Tel-simulator which is connected with 600
Ω.
2. Set line voltage to 48 V and line current to 40mA at off-hook condition of
normal telephone.
3. Execute the command “hookoff”
4. Confirm that the line current is 40 mA ± 5 mA.
5. Execute the command “hookon”.
6. Confirm that the line current is less than + 0.8 mA.
4. Confirm that the line current is 40 mA ± 5 mA.
5. Execute the command “hookon”.
6. Confirm that the line current is less than + 0.8 mA.
P1, Q3, R14,
R15, Q4, R16,
R17, D3,
R18~R24, D21,
Q5, R27, IC7
(I) DTMF Generator Check
-
1. Connect Telephone Socket to DTMF tester. (Load=600
Ω)
2. Link Handset and push dial key.
3. Confirm DTMF character.
4. Confirm that the high Group is -1 dBm ~ -5 dBm.
5. Confirm that the low Group is -4 dBm ~ -8 dBm.
3. Confirm DTMF character.
4. Confirm that the high Group is -1 dBm ~ -5 dBm.
5. Confirm that the low Group is -4 dBm ~ -8 dBm.
IC7, R116, R29,
C22, Q5, D21
(J)*
Transmitted Power
Confirmation
-
ANTI_TP
Remove the Antenna before starting step from 1 to 7.
1. Configure the DECT tester (CMD60) as follows;
<Setting>
• Test mode: FP
• Traffic Carrier: 5
• Traffic Slot: 4
• Mode: Loopback
• PMID: 00000
• RF LEVEL = -70 dBm.
• Traffic Carrier: 5
• Traffic Slot: 4
• Mode: Loopback
• PMID: 00000
• RF LEVEL = -70 dBm.
2. Execute the command ”sendchar TST”.
3. Execute the command “sendchar dmv 2 2”.
4. Check that “Signalling Status” has been set to “Locked”, then press “ACCEPT
3. Execute the command “sendchar dmv 2 2”.
4. Check that “Signalling Status” has been set to “Locked”, then press “ACCEPT
RFPI”.
5. Initiate connection from Dect tester (“set up connect”)
6. Execute the command “ANT1”.
7. Confirm that the NTP value at ANT is 19.0 dBm ~ 25.0 dBm.
6. Execute the command “ANT1”.
7. Confirm that the NTP value at ANT is 19.0 dBm ~ 25.0 dBm.
IC7,
C802~C806,
C809~C813,
C820, C837,
C822, C823,
C825, C863,
C826, C864,
C851, C853,
C809~C813,
C820, C837,
C822, C823,
C825, C863,
C826, C864,
C851, C853,
DA801, DA802,
L802, L803,
C855~C858,
R806, R807,
R106, R109,
R806, R807,
R106, R109,
Q9, C617,R71
(K)*
Modulation Check
-
ANTI_TP
Follow steps 1 to 6 of (J).
7.Confirm that the B-Field Modulation is -350±50/+350±50 kHz/div using data
type Fig31.
type Fig31.
IC7,
C802~C806,
C809~C813,
C820, C837,
C822, C823,
C825, C863,
C826, C864,
C851, C853,
C809~C813,
C820, C837,
C822, C823,
C825, C863,
C826, C864,
C851, C853,
DA801, DA802,
L802, L803,
C855~C858,
R806, R807,
R106, R109,
R806, R807,
R106, R109,
Q9, C617,R71
(L)* Frequency Offset Check
-
ANTI_TP
Follow steps 1 to 6 of (J).
7.Confirm that the frequency offset is < ± 50 kHz.
IC7,
C802~C806,
C809~C813,
C820, C837,
C822, C823,
C825, C863,
C826, C864,
C851, C853,
C809~C813,
C820, C837,
C822, C823,
C825, C863,
C826, C864,
C851, C853,
DA801, DA802,
L802, L803,
C855~C858,
R806, R807,
R106, R109,
R806, R807,
R106, R109,
Q9, C617,R71
(M)*
Frequency Drift
Confirmation
-
ANTI_TP
Follow steps 1 to 6 of (J).
7.Confirm that the frequency drift is < ± 35 kHz/ms.
IC7,
C802~C806,
C809~C813,
C820, C837,
C822, C823,
C825, C863,
C826, C864,
C851, C853,
C809~C813,
C820, C837,
C822, C823,
C825, C863,
C826, C864,
C851, C853,
DA801, DA802,
L802, L803,
C855~C858,
R806, R807,
R106, R109,
R806, R807,
R106, R109,
Q9, C617,R71
Items
Check
Point
Procedure
Check or
Replace Parts
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