Panasonic KX-DT543RU / KX-DT546RU Service Manual / Supplement ▷ View online
9
Table-2 : Boot ROM Error in IC410
Related parts: IC410,X410,R412,R413,C440,C441
Check the soldering.
Resolder or replace parts as needed.
Resolder or replace parts as needed.
Related parts: L410,C413,C406,C407,
C410,C431,IC410
NO
YES
Confirm the voltage at TP:1.2V.
Is it about 1.2V?
Is it about 1.2V?
Related parts: IC410,C404,C405
NO
YES
Confirm the voltage at TP:V1.8.
Is it about 1.8V?
Is it about 1.8V?
NO
Confirm the frequency of clock signal at Pin 45 of
IC410. Is it 13.824MHz?
IC410. Is it 13.824MHz?
Refer to the waveform (1).
END
Confirm the voltage at Pin14,15,17,67,92 of
IC410 (1.2V input pin).
Is it about 1.2V?
Related parts: C406,C407,R464,R465,
C410,C431,IC410,C450,
C560-562,IC410
YES
Confirm the voltage at Pin 19 of IC410 (VCC33).
Is it about 3.3V?
Is it about 3.3V?
YES
NO
Related parts: L222
NO
C156
C151
C152
1 CLKIN
12
KEYIN2
13
KEYIN3
23
LED_COM3
34
LED_COM
6
14
KEYIN4
15
KEYIN5
16
KEYIN6
17
KEYIN7
18
VSS2
19
VDD2
20
LED_COM
0
21
LED_COM
1
22
LED_COM
2
24
LED_STB0
25
LED_STB1
26
LED_STB2
27
LED_STB3
28
LED_STB4
29
LED_STB5
30
LED_STB6
31
LED_STB7
32
LED_COM4
33
LED_COM5
35
LED_COM
7
3
6
VDD3
3
7
VSS
3
3
8
INT_OUT0
3
9
INT_OUT
1
4
0
TEST
41
RESE
T
42
SCS
43
SCLK
44
SDI
2 CLKOUT
3 VDD1
4 VSS1
5 SDO
6 GKEYIN0
7 GKEYIN1
8 PSBIN
9 PSBOUT
10 KEYIN0
11 KEYIN1
C153
C154
R154
DG
KEYs and LEDs Circuit
L150
INT0
ASIC_RST
ASIC_RST
I2C_SCL
I2C_SDA
ASIC_CLK
R151
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CL207
CN160
C160
C161
C162
D160
DG
DG
AGND
IC150
Ope PCB side
1
14
13
12
11
10
9
8
7
6
5
4
3
2
CN400
DG
DG AGND
IC410
IC300
DCX81
R
323
R563
R324 C383
R454
R453
R452
R
472
R
456
R
455
R334
X301
R454
R453
R452
C568
C382
DG
Main PCB side
[Related Circuit]
10
Table-3 : Flash ROM(IC401) Data Error / DSP Data Error
Check the soldering.
Resolder or replace parts as needed.
Resolder or replace parts as needed.
Related parts: C400,C559,IC401,IC410,L222
NO
Confirm the voltage at Pin 8 of IC401 (VCC33) and
Pin 106 of IC410.
Are they about 3.3V?
Pin 106 of IC410.
Are they about 3.3V?
Related parts: IC410,R408
NO
YES
Confirm the frequency of clock signal at Pin 6 of
IC401. Is it 103.68MHz?
(This clock is NOT continuous)
IC401. Is it 103.68MHz?
(This clock is NOT continuous)
Refer to the waveform (2).
YES
Related parts: IC410,IC401,R404,R405,R406,
R407,R408,R409,C400,C559
NO
YES
Confirm the waveform of communication
between IC401 and IC410.
between IC401 and IC410.
Refer to the waveform (3).
END
DG
VCC33
DG
IC410
C400
C559
R4
0
0
R4
0
1
R4
0
2
R
403
R
404
R
405
R
406
C
490
C
491
R
407
R
408
R
409
IC401
108
107
105
104
107
105
104
1
2
2
C
DQ1
DQ3
DQ3
S#
DQ2
DQ0
DQ0
C
DQ
1
DQ
3
S#
DQ
2
DQ
0
1
2
3
4
8
7
6
5
*CS
IO1
IO2
GND
VCC
IO3
CLK
IO0
DCX81
[Related Circuit]
VCC33
QVCC
106
11
Table-4 : ASIC2(IC205) Data Error
Check the soldering.
Resolder or replace parts as needed.
Resolder or replace parts as needed.
Related parts:
[Main PCB] CN400
[Ope PCB] CN160,D160,C160,C161,C154
[Ope PCB] CN160,D160,C160,C161,C154
C156
Flat Cable (Between Main PCB and Ope PCB)
NO
Confirm the voltage at Pin 3 of IC150 (Ope PCB).
Is it about 3.3V?
Is it about 3.3V?
Related parts:
[Ope PCB] L150,C150,C152,C153
NO
YES
Confirm the voltage at Pin 19 and Pin 36 of
IC150 (Ope PCB).
Is it about 3.3V?
YES
Related parts:
[Main PCB] CN400,IC300,R334
[Ope PCB] CN160,R151
[Ope PCB] CN160,R151
Flat Cable (Between Main PCB and Ope PCB)
NO
YES
Confirm the frequency of clock signal at Pin 1 of
IC150 (Ope PCB). Is it 2MHz?
IC150 (Ope PCB). Is it 2MHz?
Refer to the waveform (5).
Related parts:
[Main PCB] CN400,IC300,IC410,R424,
R455,R456,R334,R452
R453,R454
R453,R454
[Ope PCB] CN160,IC150,L150,R151
Flat Cable (Between Main PCB and Ope PCB)
NO
YES
Confirm the waveform of communication
between IC150 (Ope PCB) and IC410 (Main PCB).
between IC150 (Ope PCB) and IC410 (Main PCB).
Refer to the waveform (6),(7).
END
Related parts: [Main PCB]
X301,R323,R324,C382,C383
Confirm the frequency of clock signal at Pin 39 of
IC300 (Main PCB). Is it 16.384MHz?
IC300 (Main PCB). Is it 16.384MHz?
Refer to the waveform (4).
YES
NO
12
2.2.
ASIC1(IC300) Does Not Operate
Check the soldering.
Resolder or replace parts as needed.
Resolder or replace parts as needed.
Related parts: C323,C327,C324,C328,C326,
C329, L222
NO
Confirm the voltage at Pin19,30 and 43 of
IC300 (VCC33).
Is it about 3.3V?
Related parts: X301,R323,R324,C382,C383
NO
Confirm the frequency of clock signal at Pin 39 of
IC300. Is it 16.384MHz?
IC300. Is it 16.384MHz?
Refer to the waveform (4).
YES
Related parts: IC300,IC410,R333,R438,R439,
R440
NO
YES
Confirm the waveform of communication(SPI2)
between IC300 and IC410.
between IC300 and IC410.
Refer to the waveform (9).
YES
Related parts: IC410,R423,C362
NO
YES
Confirm the waveform of reset signal at Pin1 of
IC300.
Refer to the waveform (8).
Related parts: IC300,IC410,R330,R331,
R332,R416,R441
NO
YES
Confirm the waveform of communication(PCM)
between IC300 and IC410.
between IC300 and IC410.
Refer to the waveform (10).
Related parts: T300,C309,C302,C303,
R301,R306-311,C310,C311
NO
YES
Confirm the waveform of receiving signals
from PBX.
from PBX.
Refer to the waveform (11).
Related parts: T300,D301,Q302,C309,
R301-305, C302-308
NO
YES
Confirm the waveform of transmitting signals
to PBX.
to PBX.
Refer to the waveform (12).
END
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