Read Panasonic KX-TG6451RUT / KX-TGA641RUT Service Manual online
39
KX-TG6451RUT/KX-TGA641RUT
(R)
Audio Check
-
(Through Cordless handset)
1. Link with cordless handset.
2. Input -45 dBm (600
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).
(*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,
Q111,Q112,
R110,R112,
R123,R115,
R117,R118,
D117Q131,
C151,R153,
R154,C152,
C154,C155,
R131,C142,
R146,IC501
R154,C152,
C154,C155,
R131,C142,
R146,IC501
-
(Through SP-PHONE)
1. Press Answer key ON.
2. Input -45 dBm (600
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 ± 2 dBm 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 the terminal for SP_Phone receiver of the
Base unit is -12 dBm ± 2 dBm and that distortion level is <5 % (Set Receivr
volume set to 5th position from minimum, On the measurement connection.)
volume set to 5th position from minimum, On the measurement connection.)
Refer to Adjustment Standard (Base Unit) (P.53).
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
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 ± 2 dBm 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 ± 2 dBm and that distortion level is <5 % (Set Receiver volume
to second position from minimum, and load is 150
to second position from minimum, and load is 150
Ω instead of Receiver.)
Refer to Adjustment Standard (Base Unit) (P.53).
In addition to
(through cord-
less handset)
IC201,L221-
L224
R213,R214
C213,C214
C224,C227
R222,R224
C213,C214
C224,C227
R222,R224
Corded-handset
(S)* 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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