Adjustments (Base Unit And Charger Unit); Adjustment (Base Unit) - Panasonic KX-TCA151AXM Service Manual

13 ADJUSTMENTS (BASE UNIT AND CHARGER UNIT)

If your unit has below symptoms, adjust or confirm each item using remedy column from the table.
The base unit does not respond to a call from cordless handset.
The base unit does not transmit or the transmit frequency is off.
The transmit frequency is off.
The transmit power output is low, and the operating distance between base unit and cordless
handset is less than normal.
The reception sensitivity of base unit is low with noise.
The transmit level is high or low.
The reception level is high or low.
The unit does not link.
* : Refer to Adjustment (Base Unit) (P.59)

13.1. Adjustment (Base Unit)

Please follow the items below when BBIC or EEPROM or FLASH ROM is replaced.
Items Adjustment Point
(A) 4.0V Supply
Confirmation
(B) 4.0V Supply
Confirmation
(C) 3.2V Supply
Confirmation
(D)* 1.8V Supply
Confirmation
(E)* BBIC Confirmation
(F)* EEP-ROM
Confirmation
(G)* BBIC Clock
Adjustment
(H)* Hookswitch Check
with DC
Characteristics
Symptom
TP14 1. Confirm that the voltage between TP14 and GND is 4.0V ± 0.2V.
TP3 1. Confirm that the voltage between TP3 and GND is 4.0V ± 0.2V.
TP22 1. Confirm that the voltage between TP22 and GND is 3.15V ± 0.2V.
TP15 1. Confirm that the voltage between TP15 and GND is 1.8V ± 0.02V.
2. Adjust the 1.8V voltage of TP15 executing the command
"bandgap XX" (XX is the value).
- 1. BBIC Confirmation (Execute the command "getchk").
2. Confirm the returned checksum value.
Connection of checksum value and program number is shown below.
- 1. EEP-ROM Confirmation (Execute the command).
2. Confirm the returned checksum value.
Connection of command and checksum value is shown below.
TP49 1. Execute the command "Conttx".
2. Input Command "rdeeprom 02 86 01", then you can confirm the current
value.
3. Adjust the frequency of TP49 executing the command "setfreq xx (where xx
is the value)" so that the reading of the frequency counter is 10.368000MHz
± 10Hz.
- 1. Connect CN1 (Telephone Socket) to Tel-simulator which is connected with
600 Ω.
2. Set line voltage to 48V at on-hook condition and line current to 40mA at off-
hook condition of nomal telephone.
3. Execute the command "sethooksw 01".
4. Confirm that the line current is 40mA ± 5mA.
5. Execute the command "sethooksw 00".
6. Confirm that the line current is 0mA + 0.2mA.
Make adjustments in item (A)~(H), (J)~(P).
Make adjustments in item (A)~(G), (J)~(P).
Make adjustments in item (A)~(G), (J)~(P).
Make confirmation in item (J), (M).
Make confirmation in item (M).
Make confirmation in item (Q)~(S).
Make confirmation in item (Q)~(S).
Make adjustments in item (A)~(P).
Procedure
59
KX-TCD530AXM / KX-TCA151AXM
Remedy*
Check or
Replace Parts
CN2, L8, L9,
D1, C1, C2,
C211, C309,
IC1, C114, C3,
C306
CN2, L8, L9,
D1, C1, C2,
C211, C309,
IC15, C273,
C212, C308,
C310
Q2, R12, C6,
C7, C8,
R13, R14
Q3, R15, C11
C10
IC2, X1, C42,
C43, C34, C37,
C39, C44, C48,
C45, R111, C28
IC3, C53, R56,
R57, IC2
IC2, IC4, L1,
C63, X1, C42,
C43
CN1, L6, L7,
Q4, R23, R25,
Q5, R26, R28
IC2, D3