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41

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 (Base Unit) (P.41)

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

After the measuring, suck up the solder of TP.
*: The Setting Method of JIG (Base Unit) (P.53) is required beforehand.
The connections of simulator equipments are as shown in Adjustment Standard (Base Unit) (P.55).

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).

Check item (A)-(P).

Remedy (*2)

Symptom

You don't have DECT Tester.

Items

Check 

Point

Procedure

Check or 

Replace Parts

(A)

3.0 V Supply 
Confirmation

VBAT

1. Confirm that the voltage between test point VDD3 and GND is 3.0 V ± 0.2 V.

C304, C310, 
C303, D301, 

C341, F301, 
Q301, L301, 

Q302, IC301, 

R301, R303, 

R308, R306

(B)

1.2 V Supply 
Confirmation

VDDC

1. Confirm that the voltage between test point VDDC and GND is 1.2 V ± 0.1 V.

IC501

(D) Charge Pump 3.0V

Supply Confirmation

+3.0V

1. Confirm that the voltage between test point +3.0V and GND is 3.0 V ± 0.2 V. 

IC601, C504, 

C521

(E)*

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.

IC501, X501, 

RA504, R505

(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/

SUM” in Software_Version_Table.xls).

IC661, IC501, 

R612, R606, 

R605

(G)* BBIC Clock Adjustment

CLK

1. Input Command “ sendchar sfr”, then you can confirm the current value.
2. Check X’tal Frequency. (13.824 MHz ± 100 Hz).
3. If the frequency is not 13.824 MHz ± 100 Hz, 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 13.824 MHz ± 7 Hz.

IC501, X501, 

C508, C509

(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.

P101, D101, 
R141, R142, 

Q142, R144, 
R145, D141, 
R162, R165, 
Q161, R161, 
R164, R163, 
R167, R651, 

R152

checksum value

82D2

program number

DC01EN

ex.)

42

(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 -3.0 ± 2dBm.
5. Confirm that the low Group is -6.0 ± 2dBm.

R181, C184, 

Q161, D141

(J)*

Transmitted Power 

Confirmation

-

ANT 1

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
• PACKET: PP32Z
• RF LEVEL = -70 dBm.

* Do the sequence 2 to 5 is 14 second.

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

RFPI”.

5. Initiate connection from Dect tester (“set up connect”)
6. Execute the command “ANT1”.
7. Confirm that the NTP value at ANT is 18.5 dBm ~ 23.5 dBm.

IC501, C805, 

C806, C810, 

C814, C811, 

C813, C812, 

L809, C825, 
C895, L897, 

C894, R806, 
C859, C896, 

DA801, DA802, 

C891, R891 

(K)*

Modulation Check

-

ANT 1

Follow steps 1 to 6 of (J).

7.Confirm that the B-Field Modulation is -330 ± 30/ +330± 30 kHz/div &
Modulated width   620 kHz using data type Fig31.

IC501, C805, 

C806, C810, 

C814, C811, 

C813, C812, 

L809, C825, 
C895, L897, 

C894, R806, 
C859, C896, 

DA801, DA802, 

C891, R891

(L)* Frequency Offset Check

-

ANT 1

Follow steps 1 to 6 of (J).

7.Confirm that the frequency offset is < ± 50 kHz.

IC501, C805, 

C806, C810, 

C814, C811, 

C813, C812, 

L809, C825, 
C895, L897, 

C894, R806, 
C859, C896, 

DA801, DA802, 

C891, R891, 
X501, C508, 

C509 

(M)*

Frequency Drift 

Confirmation

-

ANT 1

Follow steps 1 to 6 of (J).

7.Confirm that the frequency drift is < ± 35 kHz/ms.

IC501, C805, 

C806, C810, 

C814, C811, 

C813, C812, 

L809, C825, 
C895, L897, 

C894, R806, 
C859, C896, 

DA801, DA802, 

C891, R891

(N)*

Sensitivity Receiver 

Confirmation

-

ANT 1

Follow steps 1 to 6 of (J).

7.Set DECT tester power to -90 dBm.
8.Confirm that the BER is < 1000 ppm.

IC501, C805, 

C806, C810, 

C814, C811, 

C813, C812, 

L809, C825, 
C895, L897, 

C894, R806, 
C859, C896, 

DA801, DA802, 

C891, R891, 
C820, C863, 
C826, C822, 
C827, R807, 

R892, C852 

Items

Check 

Point

Procedure

Check or 

Replace Parts

43

After the measuring, suck up the solder of TP.
The connection of adjustment equipment is as shown in Adjustment Standard (Charger Unit) (P.56).

(O)*

Timing Confirmation

-

ANT 1

Follow steps 1 to 6 of (J).

7.Confirm that the Timing accuracy is

• ± 5.0 ppm (When adjust the frequency of CLK in item (G)).
• ± 15 ppm (When do not adjust the frequency of CLK in item (G)).

IC501, C805, 

C806, C810, 
C814, C811, 
C813, C812, 

L809, C825, 
C895, L897, 

C894, R806, 
C859, C896, 

DA801, DA802, 

C891, R891, 

X501

(P)*

Power RAMP 

Confirmation

-

Follow steps 1 to 6 of (J).

7.Confirm that Power RAMP is matching.

IC501, C805, 

C806, C810, 
C814, C811, 
C813, C812, 

L809, C825, 
C895, L897, 

C894, R806, 
C859, C896, 

DA801, DA802, 

C891, R891

(Q)

Audio Check

-

1. Link with Handset which is connected to Line Simulator.
2. Set line voltage to 48V and line current to 50mA.
3. Input -45dBm(600

Ω)/1kHz to MIC of Handset. Measure the Level at Line I/F

and distortion level.

4. Confirm that the level is -1dBm±2 dBm and that the distortion level is <5% at

TEL Line (600

Ω Load).

5. Input -20dBm(600

Ω)/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 -25dBm±2 dBm and that the distortion level is <5% at

Receiver (110

Ω Load).

P101, D101, 
R141, R142, 

Q142, R144, 
R145, D141, 
R162, R165, 
Q161, R161, 
R164, R163, 
R167, R651, 

R152, IC501, 

C805, C806, 
C810, C814, 
C811, C813, 

C812, L809, 

C825, C895, 

L897, C894, 

R806, C859, 

C896, DA801, 
DA802, C891, 

R891, C173, 
Q171, C178, 
R178, IC501 

(R)

Charging Check

-

1. Connect Charge Contact 12 

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

2. Measure and confirm voltage across the resistor is 3.3 V ± 0.3 V.

R55, R56, D22, 

D23, D24, C623, 

C624

(S)

2.4V Supply 

Confirmation VDD2 

VDD2

1. Confirm that the voltage between test point VDD2 and GND is 2.5V ± 0.2V.

IC7, Q9, C617

Items

Check 

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 3.1 V ± 0.3 V.

R1, F1

Items

Check 

Point

Procedure

Check or 

Replace Parts

44

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.44)

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

After the measuring, suck up the solder of TP.
*: Connections (P.57) is required beforehand.
The connections of adjustment equipments are as shown in Adjustment Standard (Handset) (P.59).

Items

Check 

Point

Procedure

Check or 

Replace Parts

(A)* 1.8 V Supply Adjustment

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

value).

IC1, Q2, C48, 

D1, C1, C44, 

R45, C40, 

C45, F1

(B)*

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, RA61, 

R64, R66

(C)* EEP-ROM Confirmation

-

1. EEP-ROM Confirmation (Execute the command "sendchar EPV").
2. Confirm the returned Value. (Value for reference is written at "EEPROM C/

SUM” in Software_Version_Table.xls).

IC1, IC3, 

RA40, C172

(D) Charge Control Check & 

Charge Current Monitor 

Check

-

1. Apply 3.5 V between CHG(+) and CHG(-) with DC power supply and set

current limit to 250 mA.
Confirm the indication of “charging” on LCD.

2. Confirm that the current limit LED of DC power supply is ON/OFF.

Confirm it after waiting over 1 minute at least.

3. Decrease current limit of DC power supply to 100 mA.
4. Confirm that the current limit LED of DC power supply is stable. (Current limiter

is ON.)

(If charge control cannot be confirmed by this procedure, please use battery to
handset power supply and try again.)

IC1, Q4 Q9, 

D7, R6, R7, 

F1, C1, R2, 

R30, R31, R8, 

R45

(E)* Charge Detection (OFF) 

Check

-

1. Stop supplying 3.5 V to CHG (+) and CHG (-).
2. Confirm the indication of “charging” has been cleared.

IC1, Q4 Q9, 

D7, R6, R7, 

F1, C1, R2, 

R30, R31, R8, 

R45

You have DECT Tester. 

(Model Number : CMD60)

Check item (A)-(D), (E)-(G).

Check item (A)-(D), (E)-(G).

Check item (A)-(C), (H),(O).

Check item (A)-(C), (H-(M))-(O)

-

Check item (I)-(N).

Check item (A)-(C), (H).

Check item (A)-(C), (I)-(N).

Check item (O).

Check item (O).

Check item (P).

Check item (P).

Remedy (*2)

Symptom

You don't have DECT Tester.

checksum value

program number 

ex.)

E74A

DBS2RN