Panasonic KX-TCD450 Series Service Manual page 46

KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT
Items
(M)* RSSI Level
Confirmation
(N)* Receive Audio Check
and Adjustment
Adjustment
Point
- Follow steps 1 to 3 of (H) above.
4..Set DECT tester power to -88dBm.
5.Execute the command "readrssi".
6. Confirm: 23 < returned value < 45 (hex)
ANT 1. Configure the DECT tester (CMD60) as follows;
J1
<Setting>
· Test mode: FP
· Mode: Normal
· PMID: 0000
2. Execute the command "testmode".
3. Initiate connection from DECT tester.
4. Execute the command "hookoff".
5. Execute the command "openau".
6. Connect J1 (Telephone Socket) to Tel-simulator which is connected with 600
Ω.
7. Set line voltage to 48V and line current to 40mA.
8. Connect DECT tester to Tel-simulator.
9. Input audio signal (200mVrms/1kHz tone) to Tel-simulator.
<DECT tester setting>
· Scramble: On
· AF Gen to ADPCM: Off
· AF Meter Input: ADPCM
· AF Gen Frequency: 1000Hz
· AF Gen Level: 200mVrms
10. Confirm hearing tone: 390mVrms ± 85mVrms
11. Adjust audio level if required. (Make sure current value using "getmicgain". And
then execute the command "setmicgain xx", where xx is the value.)
12. Confirm that the B-field audio distortion with DECT tester is < 5 %.
Procedure
46
Check or
Replace Parts
IC2,IC3,L1,
C43,C61,C68,
C69,C48,C72,
C66,C67,C65,
C57,C73,L3,
DA1,R66,R67,
C55,C56,R78,
R79,C54,C58,
C80,R38,C81,
C82,C83,C84,
C85,L8,C91,
C47
IC2,C21,R31,
C20,C11,R18,
R16,D3,R12,
Q2,R7,R8,
Q3,R9,R10,
D2,C1,C2,
R77,IC3,L1,
C43,C61,C68,
C69,C48,C72,
C66,C67,C65,
C57,C73,L3,
DA1,R66,R67,
C55,C56,R78,
R79,C54,C58,
C80,R38,C52,
C81,C82,C83,
C84,C85,C91,
L8,C47