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25

(F)* Hookswitch Check with

DC Characteristics

-

1. Connect J1 (Telephone Socket) to Tel-simulator which is connected with 600

Ω.

2. Set line voltage to 48V at on-hook condition and line current to 40mA at off-

hook condition of normal telephone.

3. Execute the command “hookoff”.
4. Confirm that the line current is 40mA ± 5mA.
5. Execute the command “hookon”.
6. Confirm that the line current is 0mA + 2mA.

Career mod-
ule. C30, C31,
D2, Q3, Q2,
R26, R22,
R18, R15

(G)* DTMF Generator Check -

1. Connect J1 (Telephone Socket) to DTMF tester.
2. Execute the command “hookoff” and “dtmf_up”.
3. Confirm that the high frequency (1477.06Hz) group is -3 ± 2 dBm.
4. Execute the command “dtmf_lo”.
5. Confirm that the low frequency (852.05Hz) group is -6 ± 2 dBm.

Career mod-
ule, R2, C4,
C5, R7, R9,
R10, C9, R11,
R13, R12, R6,
Q1, D10, D1,
Q3, R26, R22,
Q2, R18, D2,
C30, C31

(H)* Transmitted Power Con-

firmation

-

Remove the Antenna before starting steps from 1 to 5.

1. Configure the DECT tester (CMD60) as follows;

<Setting>

• Test mode: FP
• Traffic Channel: 5
• Traffic Slot: 4
• Mode: Loopback
• PMID: 00000

2. Execute the command “testmode”.
3. Initiate connection from DECT tester. (“set up connect”)
4. Execute the command “ANT”.
5. Confirm that the NTP value at ANT is 14dBm ~ 20dBm.

Career mod-
ule, C4, C6,
C2, C3, C25,
C8, C1, C12,
C13, C7, L1,
L2, C18, C19,
D1, C17, R2,
C23, BASE
module. R43,
R44, L2, C38,
C42, D6, C39,
C41

(I)* Modulation Check and

Adjustment

ANT

Follow steps 1 to 3 of (H).

4. Confirm that the B-Field Modulation is 340kHz/div ~ 402kHz/div using data
type Fig31.
5. Adjust the B-Field Modulation if required. (Execute the command “readmod”
and “wrtmod xx”, where xx is the value.)

Career mod-
ule, C4, C6,
C2, C3, C25,
C8, C1, C12,
C13, C7, L1,
L2, C18, C19,
D1, C17, R2,
C23, BASE
module. R43,
R44, L2, C38,
C42, D6, C39,
C41

(J)* Frequency Offset Check -

Follow steps 1 to 3 of (H).

4. Confirm that the frequency offset is -50kHz ~ +50kHz.

Career mod-
ule, C4, C6,
C2, C3, C25,
C8, C1, C12,
C13, C7, L1,
L2, C18, C19,
D1, C17, R2,
C23, BASE
module. R43,
R44, L2, C38,
C42, D6, C39,
C41

(K)* Sensitivity Receiver

Confirmation

-

Follow steps 1 to 3 of (H).

4. Set DECT tester power to -84dBm.
5. Confirm that the BER is < 1000ppm.

Career mod-
ule, C4, C6,
C2, C3, C25,
L3, L4, C15,
C20, R1, C21,
D1, C17, C20,
R1, C21, D1,
C17, BASE
module, R43,
R44, L2, C38,
C42, D6, C39,
C41

Items

Adjustment 

Point

Procedure

Check or 

Replace Parts

26

After the measuring, suck up the solder of TP.
The connection of adjustment equipment are as shown in Adjustment Standard (Charger Unit) (P.36).

(L)* Timing Confirmation

-

Follow steps 1 to 3 of (H).

4. Confirm that the Timing accuracy is < ± 2.0ppm.

Career mod-
ule, C4, C6,
C2, C3, C25,
C8, C1, C12,
C13, C7, L1,
L2, C18, C19,
D1, C17, R2,
C23, BASE
module. R43,
R44, L2, C38,
C42, D6, C39,
C41

(M)* RSSI Level Confirmation -

Follow steps 1 to 3 of (H).

4. Set DECT tester power to -70dBm.
5. Execute the command “readrssi”.
6. Confirm: 25 < returned value < 43 (hex) (0E ± A (hex))

Career mod-
ule, C4, C6,
C2, C3, C25,
L3, L4, C15,
C20, R1, C21,
D1, C17, C20,
R1, C21, D1,
C17, BASE
module, R43,
R44, L2, C38,
C42, D6, C39,
C41

(N) Charging Check

-

1. Connect Charge Contact 12

Ω/2W resistor between charge+ and charge-.

2. Measure and confirm voltage across the resistor is 2.3V ± 0.2V.

F1, D5, R39,
D8, D9, C40

(O)* Audio Check

-

1. Link with Handset.
2. Set line voltage to 48V and line current to 40mA.
3. Input -45dBm/1kHz to MIC of Handset.

Measure the Level at Line I/F and distortion level.

4. Confirm that the level is -9.5 ± 3dBm and that the distortion level is < 5% at TEL

Line (600

Ω Load).

5. Input -20dBm/1kHz to Line I/F.

Measure the level at Receiver of Handset and distortion level
(*Receive volume set to second position from minimum). 

6. Confirm that the level is -21.5 ± 3dBm and that the distortion level is < 5% at

Receiver (Volume Middle, 150

Ω Load).

Items

Adjustment 

Point

Procedure

Check or 

Replace Parts

(A) Charging Check

-

1. Connect Charge Contact 10

Ω/2W resistor between charge+ and charge-.

2. Measure and confirm voltage across the resistor is 2.75 V ± 0.3 V.

R1, D1, F1

Items

Adjustment 

Point

Procedure

Check or 

Replace Parts

27

If your unit has below symptoms, follow the instructions in remedy column. Remedies depend on whether you have DECT tester
(*1) or not. 

(*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 (Handset) (P.27)

Please follow the items below when BBIC or EEPROM is replaced.

After the measuring, suck up the solder of TP.
*: The Setting Method of JIG (Handset) (P.37) is required beforehand.
The connections of simulator equipments are as shown in Adjustment Standard (Handset) (P.39).

Items

Adjustment 

Point

Procedure

Check or 

Replace Parts

(A) Battery Supply Confir-

mation

-

1. Confirm that the consumption current is < 200mA, that is, there is no short cir-

cuit.

C143, R102,
L104, C145,
C132, C131,
C140, C146,
L103, IC101,
C141, C102,
C103, C120,
D107, C109,
C125

(B) 3.3V Supply Confirma-

tion

-

1. Confirm that the voltage between 3.3V and GND is 3.3V ± 0.3V.

L103,  IC101,
C141, C102,
C103, R107,
Career module

(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.

Career mod-
ule, X101,
C122, C123

(D) Charge Control Check &

Charge Current Monitor
Check

-

1. Apply 6V between TP5(+) and TP6(-) with current limit of PSU to 250mA.
2. Confirm that the charge current is ON/OFF.
3. SW to decrease current limit of PSU to 75mA.
4. Confirm that the charge current is stable.

C100, Q101,
Q102, R101,
C142, R108,
Career module

(E)* Charge Detection (OFF)

Check

-

1. Stop supplying 6V to TP5(+) and TP6(-).
2. Execute the command “charge”.
3. Confirm that the returned value is 00 (hex).

C100, Q101,
Q102, R101,
C142, R108,
Career module

(F)* Battery Monitor Check &

Adjustment (Important)

-

1. Apply 2.3V ± 0.005V between BATTERY (+) and BATTERY (-) 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 90 and A0.

90 < XX < A0 (Hex)
(If XX is out of range, change BBIC)

Career mod-
ule, D107,
C109, C125

28

(G) Battery Low Confirma-

tion (Important)

-

1. Apply 2.40V between BATTERY (+) and BATTERY (-).
2. Confirm that there is no Speaker sound (Battery low alarm).
3. Apply 2.1V between BATTERY(+) and BATTERY(-).
4. Confirm that there is Speaker sound (Battery low alarm).

Career mod-
ule,D107,
C109, C125,
R117, R116,
C125, R117,
R116, Q104,
Q105, D104,
R115,
BUZZER

(H)* BBIC Clock Adjustment

(Important)

P1.0
CLK

1. Apply 2.6V between BATTERY (+) and BATTERY (-) with DC power.
2. Execute the command “EnableClockOutput”.
3. Input Command “rdeeprom 00 00 02", then you can confirm the current value.
4. Check X’tal Frequency. (10.368 MHz ± 100 Hz).
5. If the frequency is not 10.368 MHz ± 100 Hz, adjust the frequency of CLK exe-

cuting the command “setfreq sfr xx xx (where xx is the value)” so that the read-
ing of the frequency counter is 10.368000 MHz ± 5 Hz.
Note:
Clear the registered information for Base Unit before measurement, because
the Frequency will not possibly get stable due to the registered information.
Pressing the button of “3” “7” “9” “#” clears the registeration. Register to it on
Base Unit after measurement.

C127, C122,
C123, X101

(I)* Transmitted Power Con-

firmation

ANT

Remove the Antenna before starting steps from 1 to 5.

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 “regcmd60”.
3. Initiate connection from DECT tester.
4. Confirm that the NTP value at ANT is -19dBm ~ 25dBm.

Career mod-
ule, R1, R2,
C21, C23, L3,
L4, C15, C20,
D2, C17

(J)* Modulation Check

ANT

Follow steps 1 to 4 of (I).

4. Confirm that the B-Field Modulation is 340kHz/div ~ 402kHz/div using data
type Fig31.

Career mod-
ule, R1, R2,
C21, C23, L3,
L4, C15, C20,
D2, C17

(K)* Frequency Offset Confir-

mation

-

Follow steps 1 to 4 of (I).

4. Confirm that the frequency offset is -50kHz ~ +50kHz.

Career mod-
ule, R1, R2,
C21, C23, L3,
L4, C15, C20,
D2, C17

(L)* Sensitivity Receiver

Confirmation

-

Follow steps 1 to 4 of (I).

4. Set DECT tester power to -85dBm.
5. Confirm that the BER is < 1000ppm.

R1, R2, C21,
C23, C1, C8,
C7, C12, C13,
L1, L2, C18,
C19, D1, C17

(M)* Timing Confirmation

-

Follow steps 1 to 4 of (I).

4. Confirm that the Timing accuracy is < ± 2.0ppm.

R1, R2, C21,
C23, C1, C8,
C7, C12, C13,
L1, L2, C18,
C19, D1, C17

(N)* RSSI Level Confirmation -

Follow steps 1 to 4 of (I).

4. Set DECT tester power to -70dBm.
5. Execute the command “readrssi”.
6. Confirm: 9 < returned value < 13 (hex) (0E ± 5 (hex))

R1, R2, C21,
C23, C1, C8,
C7, C12, C13,
L1, L2, C18,
C19, D1, C17

(O) Audio Check and Confir-

mation

-

1. Link to BASE which is connected to Line Simulator.
2. Set line voltage to 48V and line current to 40mA.
3. Input -45dBm/1KHz to MIC and measure Line output level.
4. Confirm that the level is -9.5 ± 3dBm and that the distortion level is < 5% at TEL

Line (600

Ω Load).

5. Input -20dBm/1KHz to Line I/F and measure Receiving level at SP+ and SP-.
6. Confirm that the level is -21.5 ± 3dBm and that the distortion level is < 5% at

Receiver. (vol = middle, 150

Ω Load)

Items

Adjustment 

Point

Procedure

Check or 

Replace Parts