Panasonic KX-TPA65RU / KX-TPA65RUB Service Manual ▷ View online
25
KX-TPA65RU/KX-TPA65RUB
8.2.
Power ON NG
Is the test point "D3.2V" about 3.2V?
Is the test point "1.8V_1 " over 1.71V?
CheckSodlering condition of
JK1 ,F1,C1,C2,C3
Check Soldering condition of
L108,C127,C123,C139,C126,
C108,C125,C129,C137,C147,
C148,C149,C436,L109
,C131,IC4.
No
Is the test point "1.8V_2 " over 1.71V?
Check Soldering condition of
L201,C204,C206,C211,C213,C223
,C226,C202,C207,C208,C221,R213
,C229,L204,C201,IC5
No
Is Output level of IC7 for reset of IC1 Hi-
level?
level?
Check Soldering condition of
R7,C27,R8,R9,IC7,R124,R125.
No
IsTP(BCLK ) about 13.824MHz ?
Check soldering condition of
X1 ,R101,R102,C101,C102,IC6
,L205,C225,C218,R209,R210,C224.
No
Is the test point "1.2V_2 " about 1.2V?
Check soldering condition of
IC2,L202,C209,C210C203,C228,L203,C212.
Is pin53(RSIN) of IC2 about 3.2V?
Check soldering condition of
IC2,R127,R208,C214.
No
Yes
Yes
Yes
Yes
Yes
Yes
Is the AC adaptor inserted into AC outlet?
Is VIN more than 6.5V?
CheckSodlering condition of
D1,IC3,C4,C5,R1,C6,R2,C7,R3,C8,L1,R4
,R5,C9,C10,C11,C12,R6,C13,C205,C220,
,C433,C434,C435,C104,C431,C432
Yes
No
Is the test point "1.2V_1" about 1.2V?
Check waveform of R403(IC2 side) "BOOT"
,TP(SPIM_CLK, SPIM_DO, SPIM_DI)
Check soldering condition of
R403,R211,R121,R122
No
see4.3.3
Repair the NG part.
Checkthe resistance of F1 .
Replace F1
Yes
No
NG
OK
NG
OK
0Ω
0Ω
not 0Ω
Repair the NG part.
NG
OK
Replace IC3
Repair the NG part.
NG
OK
NG
Repair the NG part.
OK
Repair the NG part.
NG
Replace IC7
OK
NG
Repair the NG part.
Is TP(BCLK) over 1.0Vp-p?
OK
NG
NG
Replace X1 and do clock adjustment
OK
Yes
Yes
Repair the NG part.
NG
Repair the NG part.
OK
NG
OK
Replace Main P.C.B.
NG
OK
Repair the NG part.
NG
Finally OK ?
Yes
END
No
Check waveform of
TP(SPIM_CS),pin 81
of IC2(TXREQ2), pin 82 of IC2(READY1)
see4.3.3
NG
OK
Change AC adaptor
No
OK
Check soldering condition of
C130,L103,L105.
Repair the NG part.
OK
26
KX-TPA65RU/KX-TPA65RUB
8.3.
No Display
Note:
Refer to 10.1.TEST MODE
8.4.
LED Trouble
Note:
Refer to 10.1.TEST MODE
Is the test point "4.5V" about 4.5V?
Check soldering condition of
Q1,D2,R10,R11,C28,C29,C135,C136,C140,
C132 or Sub P.C.B.
Is the test point "PWM1" about 1.5V
Replace Main P.C.B.
Reinsert the LCD.
Check the connection
between CN1 and LCD.
between CN1 and LCD.
Check pins of CN1.
Replace CN1.
Supply 6.5V DC Power to Vin.
Send " LED 0C" command
from PC via Serial TOOL. *
from PC via Serial TOOL. *
Replace LCD.
Repair the NG part.
NG
OK
NG
OK
OK
OK
OK
OK
NG
NG
Check Wave form of pin 6,7.8.10 of CN1
NG
OK
see4.3.6
NG
OK
Check the connection
betweenMain P.C.B and Sub P.C.B
through blue or orange cable.
betweenMain P.C.B and Sub P.C.B
through blue or orange cable.
Connect Main P.C.B and Sub P.C.B.
Is TP(4.5V) about 4.5V?
Is the teTP(Ringer K) is about 0.2V?
Replace Main P.C.B.
Is TP(Ringer K) about 2.4V?
Replace Sub P.C.B.
Supply 6.5V DC Power to Vin.
NG
OK
Repair the NG part.
NG
OK
OK
OK
NG
NG
NG
OK
Send " LED 1" command
from PC via Serial TOOL. *
from PC via Serial TOOL. *
Check soldering condition of
Q1,D2,R10,R11,C28,C29
,C135,C136,C140,C132.
27
KX-TPA65RU/KX-TPA65RUB
8.5.
KEY SCAN (No BEEP)
Note:
SPIM conection does not cause of no beep and is no checked for this case if TPA65 starts normally.
8.6.
RF Trouble
Note:
Refer to 10.3. How to "TX power mesurement".
Supply 6.5V DC Power to Vin.
Check soldering of
R6,C13,C220,R322,C217,D305,D306
NG
Is DC Bias Voltage about 1.6V
at TP(SPP) or TP(SPM) ?
Repair the NG part.
NG
OK
Check Wave form of
TP(SPP) or TP(SPM0)after pushing any key.
NG
Replace Main P.C.B.
OK
Checkthe resistance of D305,D306
Replace NG part .
NG
HI-Z
Replace Speaker
.
OK
Check Wave form of
the corresponding pin
of IC1
in pushing any Key.
see 4.3.8
Check of
Key conntact
NG
Repair the NG part.
NG
OK
Disconnect
Speaker
cables
from "SP+" and "SP - " lands
see 4.3.8
Check TX power at ANT1. *
Check antenna wire mounting
Check soldering condition of
D401,L414,L416
Repair the NG part.
Supply 6.5V DC Power to Vin.
NG
OK
NG
OK
Replace Main P.C.B.
Repair the NG part.
NG
OK
Repair the NG part.
Check soldering condition of
L412,C424,C410,C426
OK
NG
28
KX-TPA65RU/KX-TPA65RUB
8.7.
Detector Trouble
8.8.
Voice Reception Trouble
Is Pin3 of SW1 (HOOK SW) below level?
ON : 0V
OFF : 3.2V
OFF : 3.2V
Is R314 (IC1 side) voltage below level?
Headset is jacked in : under 0.86V
No Headset : over 0.86V
No Headset : over 0.86V
Check soldering of
SW1 , R103,
C105
Check soldering of
R333,
C312
,R310,
C317,C339
,R320,L305
,D309,C325,JK3,D310,L308,R319,R314
Replace Main P.C.B.
Repair the NG part.
Supply 6.5V DC Power to Vin.
NG
OK
NG
Checkthe resistance of SW1 at HOOK on.
OK
Replace SW1.
NG
OK
Repair the NG part.
NG
OK
NG
Check the resistance between
pin 2 and pin 3 of JK3
Replace JK3
NG
OK
OK 0Ω without jack
HiZ at Jack -in
Calling with another GOOD Handset
Calling with another GOOD curl cord
NG
OK
Replace Handset
OK
Replace curl cord
Check soldering of
L302,D301,JK2,C320,C340
(Handset path)
NG
Repair the NG part.
NG
Check soldering of
L301,R312,R313,C314,C315,L310
,D311,C321,JK3,
(Headset path)
Repair the NG part.
NG
Replace Main P.C.B.
OK
OK
Check soldering of
R108,R119,R120,R211
NG
Check Wave form of
R108 (IC2 side),R119,R120,R211(IC1 side)
after pushing any key.
Repair the NG part.
NG
OK
OK
see4.5.12
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