Panasonic KX-TCD816UAS, Service Manual

Page: 29 / 101

Items Check
Point
Procedure Check or
Replace Parts
( O )* RSSI Level
Confirmation
- Follow steps 1 to 6 of (I) .
7.Execute the command “readrssi”.
8. Confirm that the returned value is 22 ± A (hex).
IC2, IC8, R124,
R125, C153,
C140, C141,
DA1, C142,
C143, C144, L3,
L4, R118, R119,
C135, R115,
R116, Q6,
C145, C147,
C149, C151,
C157, R123,
C158, C159,
C160, C161,
C162, C163,
C164, C136,
R117, R127,
C156, C154,
C155
(
P
) Power RAMP
Confirmation
- Follow steps 1 to 6 of
(I)
.
7.Confirm that Power RAMP is matching.
IC2, IC8, R124,
R125, C153,
C140, C141,
DA1, L10, L11,
C57, C134,
C144, L3, L4,
R118, R119,
C135, R115,
R116, Q6,
C145, C147,
C149, C151,
C157, R123,
C158, C159,
C160, C161,
C162, C163,
C164, C136,
R117, R127,
C156, C154,
C155
( Q )* Audio Check - 1. Link with Handset.
2. Input -45dBm/1kHz to MIC ofHandset.
Measure the Level at Line I/F and distortion level.
3. Confirm that the level is -10.5dBm ± 2dBm and that the distortion level is <
5% at TEL Line (600
Ω
Load).
4. Input -20dBm/1kHz to Line I/F.
Measure the level at Receiver ofHandset and distortion level
(*Receive volume set to second position from minimum).
5. Confirm that the level is -20.5dBm ± 2dBm and that the distortion level is <
5% at Receiver (Volume Middle, 150
Ω
Load).
IC8, CN1,SA1,
L6, L7, D3, Q4,
Q5, R23, R25,
R26, R28
( R ) Charging Check - 1. Connect Charge Contact 12
Ω
/2W resistor between and charge-.
2. Measure and confirm voltage across the resistor is 3.10V ± 0.2V.
R4, R5, D6,
C107, C180,
C181, D1
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KX-TCD816UAS / KX-TCD816U AT / KX-TCA181UAS / KX-TCA181UAT