Panasonic KX-TCA285RU Service Manual ▷ View online
45
KX-TCA285RU
11.2. Adjustment (Handset)
This chapter explains the measuring equipment, the JIG connection, and the PC setting method necessary for the measurement in
Troubleshooting Guide
Troubleshooting Guide
11.2.1.
Equipment Required
• Digital multi-meter (DMM): it must be able to measure voltage and current.
• Oscilloscope.
• Frequency counter: It must be precise enough to measure intervals of 1 Hz (precision; ±4 ppm)
• DECT tester: Rohde & Schwarz, CTS 60 is recommended.
• Oscilloscope.
• Frequency counter: It must be precise enough to measure intervals of 1 Hz (precision; ±4 ppm)
• DECT tester: Rohde & Schwarz, CTS 60 is recommended.
11.2.2.
The Setting Method of JIG
<Preparation>
• Serial JIG cable: PSZZ1TD7896M
• PC which has “Flash Program.exe”
• PC which has “Flash Program.exe”
11.2.3.
Connections (Handset)
1. Connect the DC Power or Battery to BATT+ and BATT-.
2. Connect the JIG cable to CN100.
2. Connect the JIG cable to CN100.
R401
DOUT3V
R402
R403
R210
R216 R217
R218
R219
R602
R603
R605
R606
R607
R220
3.0V
CHG+
MIC
-
MIC+
CHG
-
GND_J
C201
C202
C203
C204
TH
RA101
C206
C207
C210
RA301
C211
BT3.0V
C213
C215
C216
C217
C218
C601
C223
C226
SPM
SPP
D203
TCK
URX
TDI
TDO
IC201
IC202
IC203
IC205
IC401
UTX
Q521
Q523
MIC+
Q524
MIC-
Q527
Q528
IC601
Q540
R104
R106
R304
R305
R306
CN100
VIB
BLK
R505
R506
R507
R120
R509
L2
R510
R511
R514
RTCK
R517
CN500
C101
C102
C104
C105
C106
C107
C108
C109
C301 C302
C110
C111
C112
C113
C114
C115
C116
C117
C118
C119
VDDC
TMS
R540
C
RA401
R541
C311
R542
C312
R543
C313
F201
OF1
OF2
D300
D301
BATT
BATT+
2.5A
BATT-
L200
L201
Q601
Q602
IC100
IC101
IC102
CKM
D540
C11
R201
R204
GND
R205
R206
R207
R208
R209
C331
R122
R321
R123
R124 R121
R125
A
RED
DC3.8䌶 Power
or Battery
1
2
* : COM port names may vary
depending on what your PC calls it .
46
KX-TCA285RU
R401
DOUT3V
C21
R402
R403
C23
R210
R216 R217
R218
R219
R602
R603
C30
R605
C31
R606
C32
R607
C33
R220
C34
C35
C36 C37
C39
3.0V
C40
C41
C42
C43
C44
C45
C46
C48
C49
CHG+
MIC
-
MIC+
CHG
-
GND_J
C50
C51
C201
C202
C203
C54
C204
TH
RA101
C206
C207
C210
RA300
RA301
C211
BT3.0V
C213
C215
C216
C217
C218
C601
C223
C226
SPM
SPP
C1
C2
C3
C4
C5
C6
ZA1
C9
VBG
D203
TCK
URX
TDI
L300
L301
2
3
4
5
1
L302
L303
TDO
L304
L305
IC200
IC201
IC202
IC203
IC205
ANT_TP1
ANT_TP2
JP2
IC401
UTX
Q521
SP-PHONE
BLU
JP3
ORG
Q523
MIC+
Q524
MIC-
Q527
Q528
IC601
5.0V
Q540
R104
R106
R300
R301
R302
R303
R304
R305
R306
R308
R309
CN100
VIB
BLK
R505
R506
R507
R120
R314
R509
L1
R316
L2
R317
R510
ANT_BT
R511
R320
R514
RTCK
R517
CN500
C101
C102
C104
C105
C106
C107
C108
C109
D50
D51
L21
C301 C302
C110
IC1
C111
C305
C112
C306
C113
C307
C114
C115
C116
SPI_MISO
C117
C118
C119
VDDC
TMS
R540
C310
RA401
R541
L30
C311
R542
L32
C312
C507
R543
L33
C313
L34
C314
L35
C315
C316
C317
R14
C318
L39
C319
L40
C320
L41
F201
C321
C322
C323
C324
C325
C326
C327 C328
SPI_MOSI
R3 R6
R7
R8
R9
OF1
OF2
D300
D301
D302
D303
BATT
D304
D305
BATT+
2.5A
BATT-
L200
L201
Q601
Q602
IC100
IC101
IC102
CKM
L601
SPI_CSB
X1
D540
C10
C11
C12
C13
C14
C15
R201
C16
R203
C17
R204
C18
GND
R205
C19
R206
R207
R208
R209
SPI_CLK
L38
L42
C53
R501
C502
C331
R122
R321
CN301
L31
C52
C55
L36
C47
L22
R123
R124 R121
R125
PbF
A
JP1
RED
TP-CKM
TP-BATT-
TP-BATT+
TP-GND
How to "clock adjust"
When you change X1, you must adjust the following.
First, operate the PC setting according to The
Setting Method of JIG
1. Handset Power ON
Supply 3.8V DC power between BATT+ and BATT-.
Press power key for 3 seconds or more for power supply ON.
2. Connect Frequency counter to TP-CKM
3. Execute "SFR xx xx" command
xx xx is the adjustment value.
4. Adjust the value until within 13.824000MHz +7Hz
5. Handset Power OFF
47
KX-TCA285RU
How to “RF Measurement”
<Check points using CTS60 >
Items
Procedure
Transmitted Power
Confirmation ( *1)
Confirmation ( *1)
Remove the Antenna before starting setp from 1 to 4.
1. Configure the DIGITAL RADIO TESTER(CTS60) as follows;
<Setting>
TEST MODE: PP
RFPI:0102030405
Traffic Carrier:5
Traffic Slot:4
Mode: Loopback
RF LEVEL = -70dBm
PACKET:PP32Z
RFPI:0102030405
Traffic Carrier:5
Traffic Slot:4
Mode: Loopback
RF LEVEL = -70dBm
PACKET:PP32Z
Carrier No. offset : 0
2. Handset Power On.
3. Execute the command "TST 01 02 03 04 05".
4. Initiate connection from DECT tester.
5. Confirm that the NTP value at ANT is 19dBm - 25dBm.
3. Execute the command "TST 01 02 03 04 05".
4. Initiate connection from DECT tester.
5. Confirm that the NTP value at ANT is 19dBm - 25dBm.
Modulation
Confirmation
Confirmation
Follow steps 1 to 4 of ( *1).
5. Confirm that the B-Field Modulation is -340±30 / 340±30 kHz/div.
& Modulated width
660kHz using data type Fig31.
Frequency Offset
Confirmation
Confirmation
Follow steps 1 to 4 of ( *1).
5. Confirm that the frequency offset is < ±15kHz.
Frequecy Drift
Confirmation
Confirmation
Follow steps 1 to 4 of ( *1).
5. Confirm that the frequency Drift is < ±20kHz/ms.
Sensitivity Receiver
Confirmation
Confirmation
Follow steps 1 to 4 of ( *1).
5. Set DECT tester power to -88 dBm.
6. Confirm that the BER is < 1000ppm.
6. Confirm that the BER is < 1000ppm.
Power RAMP
Confirmation
Confirmation
Follow steps 1 to 4 of ( *1).
5. Confirm that Power RAMP is matching.
48
KX-TCA285RU
12 Miscellaneous
12.1. Terminal Guide of the ICs Transistors and Diodes
12.1.1.
Handset
12.1.2.
Charger
Click on the first or last page to see other KX-TCA285RU service manuals if exist.