Panasonic KX-DT543-B Service Manual page 22

KX-DT543/KX-DT543-B/KX-DT546/KX-DT546-B
Table-1: PORT OUTPUT at ERROR
The error result is output to a port of IC410 at error. Check the Test Point ST3,ST2,ST1 and ST0.
See below for the output contents.
Test Point
No.
ST3 ST2
1 H H
2 H H
3 L L
4 L H
5 H L
6 L L
7 H L
Remarks: H=3.3V, L=0V
R 4 5 3
H E S S P O U T
R 5 5 8
R 4 5 4
C 5 7 8
C 5 7 7
AG-DG
4 . 5 V
L 4 6 1
H E S M I N
R 4 2 8
C 5 7 6
C 5 7 1
R 5 6 6
C 4 2 8
R 5 6 9
C 5 8 0
R 5 7 0
C 5 6 4
ST1 ST0
H L
H H No Power(+3.3V) Error
H L Flash ROM(IC401) Data Error
L L Flash ROM Data Error
H L ASIC(IC150) Data Ezzor
H H DSP Data Error
L H Flash ROM(IC401) Data Errorr
S T 2
S T 3
C 5 6 8 R 5 6 3
R 4 2 4
R 4 4 0
R 4 3 8
C 4 2 2 JTAG_TDI
JTAG_TCK
D
JTAG_TDO
R 4 3 9
R 4 1 9
1 . 2 V
R 4 2 2
JTAG_TMS
Error Item
NOT Error
S T 0
S T 1
MAIN BOARD BOTTOM VIEW
SPI_CLK
C 4 6 6
L 4 6 0
LCD_A0
C 4 6 3
C 3 2 6
C 3 2 9
LCD_RST
4 8
JTAG_RTCK 1
C 3 6 2
R 3 3 0
R 3 3 1
IC300
R 3 3 2
22
Related Points
See Table-2
See Table-3
See Table-3
See Table-4
See Table-3
See Table-3
TP_LED+
TP_LED-
R 4 6 3
Q460
E
3 7
UART_GND
LCD Error Message.
ERR 1001-0000
HARDWARE ERROR
ERR 1003-0002
HARDWARE ERROR
ERR 1003-1003
HARDWARE ERROR
pcbmark-1
3 . 3 V
L 2 2 0
L 2 2 2
R 3 0 6
C 3 1 0
L 2 2 1
C 3 1 1
R 3 0 8