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41

(F)* Battery Monitor Check

-

1. Apply 2.35 V between BATT+ and BATT-.
2. Execute the command 

sendchar VBA
It assumes that the return value is XX.
a) XX < 0A: No need to adjust

b) XX   0A : Reject

IC1, F1, C2, 

R45, C15, C80

(G)

Battery Low Confirma-

tion

-

1. Apply 2.40 V between BATT+ and BATT-.
2. Confirm that there is no flashing of Battery Icon.
3. Apply 2.35 V ± 0.08 V between BATT+ and BATT-.
4. Confirm that there is flashing of Battery Icon.

IC1, F1, C2, 

R45, C15, C80

(H)* BBIC Clock Adjustment

CLK

1. Apply 2.6 V between BATT+ and BATT- with DC power.
2. Input Command “sendchar sfr”, then you can confirm the current value.
3. Check X’tal Frequency. (13.824000 MHz ± 100 Hz).
4. If the frequency is not 13.824000 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 13.824000 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” “5” “7” “#” clears the registration.
Register to it on Base Unit after measurement. 

IC1, X1, C8, 

C9, R64

 

(I)* Transmitted Power Con-

firmation

-

Remove the Antenna before starting step from 1 to 4.

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

<Setting>

• Test mode: PP
• RFPI: 0102030405
• Traffic Carrier: 5
• Traffic Slot: 4
• Mode: Loopback
• RF LEVEL = -70 dBm
• PACKET: PP32Z

2. Execute the command “sendchar TST 01 02 03 04 05".
3. Initiate connection from DECT tester.
4. Confirm that the NTP value at ANT is 19 dBm ~ 25 dBm.

IC1, 

C802~C806, 
C808~C814, 
C819, C822, 
C825~C827, 
C834, C860, 

C861, L801, 

L803, DA801, 

R801, R802, 

R805~R807

(J)*

Modulation Check

-

Follow steps 1 to 3 of (I).

4.Confirm that the B-Field Modulation is -340±30/ +340±30 kHz/div & Modulated
width   660 kHz using data type Fig 31.

IC1, 

C802~C806, 
C808~C814, 
C819, C822, 
C825~C827, 
C834, C860, 

C861, L801, 

L803, DA801, 

R801, R802, 

R805~R807

(K)* Frequency Offset Confir-

mation

-

Follow steps 1 to 3 of (I).

4.Confirm that the frequency Offset is < ± 50 kHz.

IC1, 

C802~C806, 
C808~C814, 
C819, C822, 
C825~C827, 
C834, C860, 

C861, L801, 

L803, DA801, 

R801, R802, 

R805~R807

(L)* Frequency Drift Confir-

mation

-

Follow steps 1 to 3 of (I).

4.Confirm that the frequency Drift is < ± 35 kHz/ms.

IC1, 

C802~C806, 
C808~C814, 
C819, C822, 
C825~C827, 
C834, C860, 

C861, L801, 

L803, DA801, 

R801, R802, 

R805~R807

Items

Check 

Point

Procedure

Check or 

Replace Parts

<

=

42

(M)*

Sensitivity Receiver 

Confirmation

-

Follow steps 1 to 3 of (I).

4.Set DECT tester power to -88 dBm.
5.Confirm that the BER is < 1000 ppm.

IC1, 

C802~C806, 
C808~C814, 
C819, C822, 
C825~C827, 
C834, C860, 

C861, L801, 

L803, DA801, 

R801, R802, 

R805~R807

(N)* Power RAMP Confirma-

tion

-

Follow steps 1 to 3 of (I).

4.Confirm that Power RAMP is matching.

IC1, 

C802~C806, 
C808~C814, 
C819, C822, 
C825~C827, 
C834, C860, 

C861, L801, 

L803, DA801, 

R801, R802, 

R805~R807

(O) Audio Check and Confir-

mation

-

1. Link to BASE which is conected 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 -7 dBm ± 2 dBm and that the distortion level is < 5% at

TEL Line (600 

Ω Load).

5. Input -20 dBm (600 

Ω)/1 kHz 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 -23 dBm ± 2 dBm and that the distortion level is < 5%

at Receiver (34 

Ω Load).

IC1, C12, C96,

C97, R25, L3, 

C86, R24, 
CN4, L72, 

C14, R306, 

L74, C17, 

C110, C185, 

C82, C83, 

C152, R152, 

C188, R27, 

RA4, C11, 
C13, R28, 

MIC, C113, 

R34

(P) SP phone Audio Check 

and Confirmation

-

1. Link to Base which is connected to Line Simulator.
2. Set line voltage to 48 V and line current to 50 mA.
3. Set the handset off-hook using SP-Phone key.
4. Input -25 dBm (600 

Ω)/1KHz to Line I/F and measure Receiving level at SP+

and SP-.

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

(vol = 3)

IC1, C12, C73, 

D13, D14, 
R73, R74, 

MIC, C11, 

C13, RA4, 

R27, R28, 

C96, C97, L13, 

R24, R152, 
C188, R34, 

C113

(Q)

DouBout 3.0V Supply 

Confirmation

3.0V

1. Confirm that the voltage between testpoint 3.0V and GND is 3.0V ±0.2V.

C30

Items

Check 

Point

Procedure

Check or 

Replace Parts

43

Ԙ

ԙ

Ԛ

 Cabinet cover

Ԙ

4 screws

Tapes and solders

ԙ

Ԛ

Parallel wire

Main P.C. board

44

ԛ

Operational P.C. board

ԛ

4 screws