Panasonic KX-TCD460UA / KX-A146UA-1 / KX-A146UA Service Manual ▷ View online
15.3. Adjustment (Charger Unit)
Items
Adjustment
Point
Procedure
Check or
Replace Parts
(A)
Charging Check
-
1.
Connect Charge Contact 12
Ω
/2 W resistor between charge+ and charge-.
2.
Measure and confirm voltage across the resistor is 2.7 V ± 0.2 V.
D1,R1,R2
Note:
After the measuring, sock up the solder of TP.
The connection of the adjustment equipment is as shown in Adjustment Standard (Charger Unit) (P.49).
15.4. Adjustment Standard (Charger Unit)
When connecting the Simulator Equipment for checking, please refer to below.
15.4.1. Flow Solder Side View
PbF
R1
R2
TP4
TP1
TP2
TP3
Digital Volt Meter
12
Ω
/2W
(A)
Note:
(A) is referred to Adjustment (Charger Unit) (P.49)
49
KX-TCD460UA / KX-A146UA-1 / KX-A146UA
16 ADJUSTMENTS (HANDSET)
If your unit have below symptoms, adjust or confirm each item using remedy column from the table.
Symptom
Remedy*
The movement of Battery Low indicator is wrong.
Make confirmation in item (A)~(C), (F)~(G)
The handset does not respond to a call from base unit.
Make adjustments in item (A)~(C), (H), (J)~(N)
The handset does not transmit or the transmit frequency is off.
Make adjustments in item (A)~(C), (H)~(K), (M)
The transmit frequency is off.
Make confirmation in item (A)~(C), (H)~(K), (M)
The transmit power output is low, and the operating distance between base unit and handset is
less than normal.
less than normal.
Make confirmation in item (I), (L)
The reception sensitivity of base unit is low with noise.
Make confirmation in item (L)
Does not link between base unit and handset.
Make confirmation in item (A)~(C), (H)~(N)
The reception level is high or low.
Make adjustments in item (O)
The transmit level is high or low.
Make adjustments in item (P)
*: Refer to Adjustment (Handset) (P.50)
16.1. Adjustment (Handset)
Please follow the items below when BBIC or EEPROM is replaced.
Items
Procedure
Check or
Replace Parts
(A)
4.0 V Supply
Confirmation
1.
Confirm that the consumption current is < 200 mA, that is, there is no short circuit.
2.
Confirm that the voltage between TP4V and GND is 3.9 V ± 0.2 V.
IC1,F1,R21,
R4,C33,L2,
D1,C15,C2,
C14,Q1,R3,
R2,D2,R22,
C14,Q1,R3,
R2,D2,R22,
C26,X1,C16,
C17
(B)
VBACK Status
Confirmation
1.
Confirm that the voltage between TPVBACK and GND is 0 V ± 0.4 V.
IC1,R11
(C)
BBIC Confirmation
1.
BBIC Confirmation (Execute the command “getchk”).
2.
Confirm the returned checksum value.
Connection of checksum value and program number is shown below.
IC1,X1,C16,
C17
(D) Charge Control Check &
Charge Current Monitor
Confirmation
1.
Apply 6V between TPCHG(+) and TPCHG(-) with current limit of PSU to 250 mA.
2.
Confirm that the charge current is ON/OFF.
3.
SW to decrease current limit of PSU to 100 mA.
4.
Confirm that the charge current is stable.
IC1,L4,
L5,Q2,Q3,
R6,D2,R22,
C26,F1,R21,
R4,C33
(E)* Charge Detection (OFF)
Confirmation
1.
Stop supplying 6 V to TP20(+) and TP21(-).
2.
Execute the command “charge”.
3.
Confirm that the returned value is 0x00 (hex).
IC1,L4,
L5,Q2,Q3,
R6,D2,R22,
C26,F1,R21,
R4,C33
(F)*
Battery Monitor
Confirmation &
Adjustment (Important)
1.
Apply 2.3 V ± 0.005 V between TP BATT(+) and TP BATT(-) with DC power.
2.
Execute the command “deactmac” to stabilize the value.
3.
Then, execute the command “readbatt”. The returned value is XX.
4.
Confirm that XX is between 98 and A8.
98 < XX < A8 (Hex)
(If XX is out of range, change BBIC)
IC1,L4,
L5,Q2,Q3,
R6,D2,R22,
C26,F1,R21,
R4,C33
(G) Battery low Confirmation
(Important)
1.
Apply 2.40 V between TPBATT(+) and TPBATT(-).
2.
Confirm that there is no Speaker sound (Battery low alarm).
3.
Apply 2.20 V between TPBATT(+) and TPBATT(-).
4.
Confirm that there is Speaker sound (Battery low alarm).
IC1,F1,R21,
R4,C33
(H)* BBIC Clock Adjustment
(Important)
1.
Apply 2.6 V between TP BATT(+) and TP BATT(-) with DC power.
2.
Execute the command “deactmac”
3.
Execute the command “conttx”
4.
Input Command “rdeeprom 00 01 01”, then you can confirm the current value.
5.
Adjust the frequency of TPMCLK executing the command “setfreq 00 xx (where xx is the
value)” so that the reading of the frequency counter is 10.368000 MHz ± 10 Hz.
value)” so that the reading of the frequency counter is 10.368000 MHz ± 10 Hz.
IC1,L3,C57,
IC3,X1,C16,
C17
50
KX-TCD460UA / KX-A146UA-1 / KX-A146UA
Items
Procedure
Check or
Replace Parts
(I)*
Transmitted Power
Confirmation
Remove the Antenna before starting steps from 1 to 5.
1.
1.
Configure the DECT tester(CMD60) as follows;
<Setting>
·
Test mode: PP
·
RFPI: 0102030405
·
Traffic Channel: 5
·
Traffic Slot: 4
·
Mode: Loopback
2.
Execute the command “testmode”.
3.
Execute the command “regcmd60”
4.
Initiate connection from DECT tester.
5.
Confirm that the NTP value at ANT is 20 dBm ~ 25 dBm
IC1,IC3,C54,
C66,C60,
L3,C57,C55,
C56,C62,
R23,C63,C64,
C65,R18,
L6,C67,C202,
C208,C209
(J)
Modulation Check and
Adjustment
Follow steps 1 to 4 of (I) above.
5. Confirm that the B-Field Modulation is 340 kHz/div ~ 402 kHz/div using data type Fig31.
6. Adjust the B-Field Modulation if required. (Execute the command “Readmod” and
“Writemod xx”, where xx is the value.)
“Writemod xx”, where xx is the value.)
IC1,IC3,C54,
C66,C60,
L3,C57,C55,
C56,C62,
R23,C63,C64,
C65,R18,
L6,C67,C202,
C208,C209
(K)
Frequency Offset
Confirmation
Follow steps 1 to 4 of (I) above.
5. Confirm that the frequency offset is -50 kHz ~ +50 kHz.
IC1,IC3,C54,
C66,C60,
L3,C57,C55,
C56,C62,
R23,C63,C64,
C65,R18,
L6,C67,C202,
C208,C209
(L)
Sensitivity Receiver
Confirmation
Follow steps 1 to 4 of (I) above.
5. Set DECT tester power to -88 dBm.
6. Confirm that the BER is < 1000 ppm.
IC1,IC3,C54,
C66,C60,
L3,C57,C55,
C56,C62,
R23,C63,C64,
C65,R18,
L6,C67,C202,
C208,C209
(M)
Timing Confirmation
Follow steps 1 to 4 of (I) above.
5. Confirm that the Timing accuracy is < ± 10ppm.
IC1,IC3,C54,
C66,C60,
L3,C57,C55,
C56,C62,
R23,C63,C64,
C65,R18,
L6,C67,C202,
C208,C209
(N)*
RSSI Level
Confirmation
Follow steps 1 to 4 of (I) above.
5. Set DECT tester power to -70 dBm.
6. Execute the command “readrssi”
7. Confirm: 52
returned value
72 (hex) (0 × 62 ± 0 × 10 (hex))
IC1,IC3,C54,
C66,C60,
L3,C57,C55,
C56,C62,
R23,C63,C64,
C65,R18,
L6,C67,C202,
C208,C209
51
KX-TCD460UA / KX-A146UA-1 / KX-A146UA
Items
Procedure
Check or
Replace Parts
(O)*
Receive Audio Check
1.
Configure the DECT tester (CMD60) as follows;
<Setting>
·
Test mode: PP
·
Mode: Normal
·
RFPI: 0102030405
2.
Execute the command “testmode”.
3.
Execute the command “regcmd60”
4.
Initiate connection from DECT tester.
5.
Execute the command “openaudio”.
6.
Confirm that the value of EEPROM address “F3F” is “02”. (If the value is not “02 (by
User)”, set “02” and power off and power on, and return to clause 2.)
User)”, set “02” and power off and power on, and return to clause 2.)
7.
Input audio signal (50 mVrms/1 kHz tone) from DECT tester.
<DECT tester setting>
·
Scramble: On
·
AF Gen. to ADPCM: On
·
AF Meter Input: AF Voltm
·
AF Gen. Frequency: 1000 Hz
·
AF Gen. Level: 50 mVrms
8.
Confirm hearing tone: 300 mVrms ± 250 mVrms (Just check Audio path)
9.
Confirm that the audio distortion with DECT tester is < 5 %.
IC1,R17,R20,
D7,D6,
C12,C31,C115
(P)
Transmit Audio Check 1.
Configure the DECT tester (CMD60) as follows;
<Setting>
·
Test mode: FP
·
Mode: Normal
·
RFPI: 0102030405
2.
Execute the command “testmode”.
3.
Execute the command “regcmd60”.
4.
Initiate connection from DECT tester.
5.
Execute the command “openaudio”.
6.
Confirm that the value of EEPROM address “F3F” is “02”. (If the value is not “02 (by
User)”, set “02” and power off and power on, and return to clause 2.)
User)”, set “02” and power off and power on, and return to clause 2.)
7.
Input audio signal (30 mVrms/1 kHz tone) to DECT tester.
<DECT tester setting>
·
Scramble: On
·
AF Gen. to ADPCM: Off
·
AF Meter Input: ADPCM
·
AF Gen. Frequency: 1000 Hz
·
AF Gen. Level: 30 mVrms
8.
Confirm hearing tone: 300 mVrms ± 250 mVrms (Just check Audio path)
9.
Confirm that the audio distortion with DECT tester is < 5 %.
IC1,C8,R7,
R8,C6,
C7,C5,R5,
R1,C4
Note:
After the measuring, sock up the solder of TP.
*: PC Setting (P.42) is required beforehand.
The connections of the adjustment equipment are as shown in Adjustment Standard (Handset) (P.53).
52
KX-TCD460UA / KX-A146UA-1 / KX-A146UA
Click on the first or last page to see other KX-TCD460UA / KX-A146UA-1 / KX-A146UA service manuals if exist.