DOWNLOAD Panasonic KX-UT248RU / KX-UT248RU-B (serv.man3) Service Manual ↓ Size: 3.83 MB | Pages: 101 in PDF or view online for FREE

Model
KX-UT248RU KX-UT248RU-B (serv.man3)
Pages
101
Size
3.83 MB
Type
PDF
Document
Service Manual
Brand
Device
PBX / SIP PHONE
File
kx-ut248ru-kx-ut248ru-b-sm3.pdf
Date
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29
KX-UT248RU/KX-UT248RU-B
9.1.3.
Power Supply : PoE 
Note:
Refer to waveform (2) in  Waveform (P.69) .
30
KX-UT248RU/KX-UT248RU-B
Note:
Refer to waveform (1) in  Waveform (P.69) and Waveform (7) in Waveform (P.70).
31
KX-UT248RU/KX-UT248RU-B
Table-1: PORT OUTPUT at ERROR
The error result is output to a port of IC503 at error. Check the Test Point ST0,ST1,ST2 and ST3.
See below for the output contents.
*1 Error code is displayed if pressing soft key 1 twice.
Remarks: H=3.3V, L=0V
No
.
Test Point
Error Item
Related Points
LCD Error Message
Remark
ST3 ST2 ST1 ST0
1
H
H
H
L
Not  Error
-
-
-
2
L
L
L
L
No  Power
See  Table-2
-
-
3
H
H
H
H
Flash ROM(IC501) Data Error(Wiring)
SDRAM(IC502) Data Error(Wiring)
DSP(IC503) Error(Wiring)
See Table-3
See Table-4
See Table-8
-
-
4
L
L
H
L
Flash ROM(IC501) 
Data Error(Boot Program Read Error)
See Table-3
-
IC501 Defect
5
L
H
H
L
DSP(IC503) Defect
See Table-8
-
IC503 Defect
6
H
L
H
L
ASIC(IC204) Data Error
See Table-5
ERROR010
-
7
L
L
L
H
Flash ROM(IC501) 
(Store Area Read Error)
See Table-3
ERROR001
IC501 Defect
8
L
L
H
H
Flash ROM(IC501) Data Error
(Adjustment Data Read Error)
See Table-3
ERROR003
IC501 Defect
9
H
L
L
H
Flash ROM(IC501) Data Error
(User Data Read Error)
See Table-3
ERROR009
IC501 Defect
10 H/L
H/L
H/L
H/L
CODEC IC(IC103) Data Error
See Table-6
-
UART Communication Error
Reset Operation is repeated
11
L
H
H
H
CODEC IC(IC103) Data Error
See Table-6
ERROR007
-
12
H
H
L
L
BT Module(IC506) Data Error
See Table-7
ERROR012
*1
ST0
ST1
ST2
ST3
L503
07
R5
BK
5
D501
IC
D503
L108
L504
L508
L512
C522
1
18
V1
DG2
DL301
ST0
ST1
ST2
ST3
Q501
L109
L502
L503
L506
L507
401
R501
R502
CN101
R509
R510
R511
R513
R514
R515
R517
BKLT
CN501
C301
C525
C542
C545
D501
D502
IC503
IC505
X501
R333
C5004
D503
L108
L504
L508
L512
C522
38
65
1
1
12
1
14
1
18
V18
A18
A1
V1
BLUE
ORG
ST0
ST3
ST2
ST1
32
KX-UT248RU/KX-UT248RU-B
Table-2
Table-3
Note:
Refer to waveform (3) in  Waveform (P.69) .
No. 2
No Power(TP 3.3V) Error
[Check Points]
Measure the voltage at C555(Between 3.3V and DG). 
Is it 3.3V?
Measure the voltage at C546(Between 1.3V and DG).
Is it 1.3V?
[Related Parts]
DL501, C555, C556, C520
C549,I C504, C546, C547, L510
[Related Circuit]
No. 3,4,7,8,9
Flash ROM Data Error
[Check Points]
Measure the communication waveform(3). 
Pin 14(RESET),Pin32(CE),Pin31(A0),Pin35(D0) of IC501
[Related Parts]
IC501,R504,R508,R525,R532,R539,R572
C501,C513,C514,C515,C558,C562,C566,C574,DL503
R513,R514,R515,R516,R517,R518,R519,R520,R521,R522
[Related Circuit]
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