KX-TG6461RUT, KX-TGA641RUT - Panasonic Telephone Service Manual (repair manual). Page 40

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40
KX-TG6461RUT/KX-TGA641RUT
(R)
Audio Check
-
(Through Cordless handset)
1. Link with cordless handset.
2. Input -45 dBm (600
Ω)/1KHz to MIC of cordless handset.
Measure the Level at Line I/F and distortion level.
3. Confirm that the level is -5 dBm ± 2 dBm and that the distortion level is < 5 %
at TEL Line (600 
Ω Load).
4. Input -20 dBm (600
Ω)/1KHz to Line I/F.
Measure the level at Receiver of cordless handset and distortion level
(*Set Receive volume to first position from minimum). 
5. Confirm that the level is -20 dBm ± 2 dBm and that the distortion level is < 5 %
at Receiver (150 
Ω Load).
P101,D101,
Q111,Q112,
R110,R112,
R123,R115,
R117,R118,
D117Q131,
C151,R153,
R154,C152,
C154,C155,
R131,C142,
R146,IC501
-
(Through SP-PHONE)
1. Press Answer key ON.
2. Input  -45 dBm (600
Ω)/1KHz to the terminal for SP_Phone MIC on the Base
unit.
3. Measure and check the level at line I/F is -1.5 dBm ± 2dBm and that the dis-
tortion level is < 5% at TEL Line (600 
Ω).
4. Input -20 dBm (600
Ω)/1KHz to Line I/F.
5. Measure and check the level at the terminal for SP_Phone receiver of the
Base unit is -12 dBm ± 2dBm and that distortion level is <5% (Set Receivr vol-
ume set to 5th position from  minimum, On the measurement connection.)
Refer to Adjustment Standard (Base Unit) (P.54).
In addition to
(through Cord-
less handset)
IC201,L203,
L204,L201,
L201,SP,
Mic,R233,
R234,C232-234
D235,R232,
C235,R236
-
(Through Corded-Handset)
1. Set the Hook Switch to OFF-HOOK.
2. Input  -45 dBm (600
Ω)/1KHz to the terminal for Corded-handset MIC on the
Base unit.
3. Measure and check the level at line I/F is -13 dBm ± 2dBm and that the distor-
tion level is < 5% at TEL Line(600
Ω)
4. Input -20 dBm (600
Ω)/1KHz to Line I/F.
5. Measure and check the level at terminal for Corded-Handset receiver on Base
unit is -23 dBm ± 2dBm and that distortion level is <5% (Set Receiver volume
to second position from minimum, and load is 150
Ω instead of  Receiver.)
Refer to Adjustment Standard (Base Unit) (P.54).
In addition to 
(through cord-
less handset)
IC201,L221-
L224
R213,R214
C213,C214
C224,C227
R222,R224
Corded-handset
(S)*
TAM Operation 
Confirmation
-
1. TAM Confirmation (Execute the command “sendchar_VPI”)
2. Confirm the returned Value (Value is “DAS7RN 02”).
IC201,IC541
Q541
(T)* Power RAMP Confirma-
tion
-
Follow steps 1 to 6 of (K).
7.Confirm that Power RAMP is matching.
Items
Check 
Point
Procedure
Check or 
Replace Parts
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