![background image](http://html.mh-extra.com/html/panasonic/kx-tca275ce/kx-tca275ce_service-manual_270068047.webp)
47
KX-TCA275CE
[4]-(7) Downloading Complete
If downloading finished, display shows "Download finished successfully!".
Click "OK" then disconnect the serial PC cable.
11.2. Adjustments (Handset and Charger Unit)
11.2.1. Adjustment (Handset)
When you change IC3, you must adjust (A)(F)(H)(I)(K)
Items
Adjustment
Point
Procedure*
Check or
Replace Parts
(
A
)* 1.8V Supply Confirma-
tion
CK17
1. Confirm that the voltage between test point "CK17" and GND is 1.8V±0.02V.
2. Adjust the 1.8V voltage of CK17 executing command "VDD XX" (XX is the
value).
IC3, Q8, R26
(
B
) 3V Supply Confirmation
CK18
1. Confirm that the voltage between "CK18" and GND is 3.0V±0.15V.
IC3, Q10,
R28, R32, R33
(
C
)* Software Confirmation
-
1. BBIC Confirmation (Execute the command "SLF", and “VER”).
2. Confirm the returned checksum value.
Connection of checksum value and software version is shown below.
IC3, X1,
C17
(IC1, IC2)
(
D
) Charge Control Check &
Charge Current Monitor
Confirmation
-
1. Apply 6V between CN3(+) and CN4(-) with current limit of PSU to 200mA.
2. Confirm that the charge current is ON/OFF.
3. SW to decrease current limit of PSU to 100mA.
4. Confirm that the charge current is stable.
IC3, R5,
Q2, Q3, Q4,
L1, L2, R10,
R14, D11,
D13, R15, R16
(
E
)* Charge Detection (OFF)
Confirmation
-
1. Stop supplying 6V to CN3(+) and CN4(-).
2. Execute the command "BTS".
3. Confirm that the returned value is 0x00 (hex).
IC3, R10, R5,
L1, L2, C7
(
F
)* Battery Monitor Confir-
mation
-
1. Apply 3.5V ± 0.02V between BATT(+) and BATT(-).
2. Execute the command "LED 0", then "AD1".
3. Confirm:
20 returned value 38 (Hex)
4. Adjust the Battery Monitor executing command.
(XX=returned value, YY=XX-9(hex))
WB2 XX
WB4 XX
WB3 YY
IC3,
R35, R38
Summary of Contents for KX-TCA275CE
Page 15: ...15 KX TCA275CE 5 Location of Controls and Components 5 1 Handset ...
Page 16: ...16 KX TCA275CE ...
Page 19: ...19 KX TCA275CE 7 Operating Instructions 7 1 Soft Keys ...
Page 20: ...20 KX TCA275CE ...
Page 21: ...21 KX TCA275CE 7 2 Handset Setting Menu Layout ...
Page 23: ...23 KX TCA275CE 7 5 DISPLAY ...
Page 25: ...25 KX TCA275CE 7 7 Function Keys ...
Page 26: ...26 KX TCA275CE 7 8 Flexible Keys ...
Page 27: ...27 KX TCA275CE 7 9 Caller ID ...
Page 28: ...28 KX TCA275CE 7 10 Character Mode Table ...
Page 31: ...31 KX TCA275CE Charger Unit NO Display On the LCD ...
Page 32: ...32 KX TCA275CE 5V Circuit 8 2 Battery Charge Trouble Handset 8 2 1 Charge On ...
Page 33: ...33 KX TCA275CE 8 2 2 Charge Off ...
Page 34: ...34 KX TCA275CE 8 3 LED Trouble Handset 8 3 1 Key Back Light 8 3 2 Charging And Ringing LED ...
Page 36: ...36 KX TCA275CE 8 6 No Voice Transmission ...
Page 37: ...37 KX TCA275CE 8 7 No Voice Reception 8 7 1 Talk Mode ...
Page 39: ...39 KX TCA275CE 9 Service Fixture Tools ...
Page 46: ...46 KX TCA275CE 4 6 Downloading Start After several seconds Display shows Flash Program Start ...
Page 65: ...65 KX TCA275CE 16 2 Cabinet and electrical Parts Location 16 2 1 Handset ...
Page 66: ...66 KX TCA275CE 16 2 2 Charger Unit ...
Page 67: ...67 KX TCA275CE 16 2 3 Accessories and Packing Materials ...