R
SF-5300E(LX-551AQ)
JAN. 1995
(with price)
SF-5300E
CONTENTS
1.
SCHEMATIC DIAGRAM
1-1. MAIN PCB ...............................................................................................................1
1-2. KEY MATRIX 1 ........................................................................................................2
1-3. KEY MATRIX 2 ........................................................................................................3
2.
SPECIFICATIONS
2-1. General ...................................................................................................................5
2-2. Function .................................................................................................................5
2-3. Storage Capacitiy ..................................................................................................9
3.
GENERAL GUIDE
3-1. Outward ................................................................................................................10
3-2. About data errors ................................................................................................10
3-3. About the memory overflow message ............................................................... 10
3-4. Mesage Table .......................................................................................................11
3-5. To adjust the display contrast ............................................................................ 11
3-6. To select a mode .................................................................................................12
3-7. To check the memory status .............................................................................. 12
3-8. To use the FUNCTION key .................................................................................. 12
3-9. To switch the key input and alarm tones on and off ........................................ 13
3-10. To select the system language .......................................................................... 13
4.
REPLACING THE BATTERIES ................................................................................... 14
5.
RESETTING THE UNIT ................................................................................................15
6.
SAVING DATA .............................................................................................................16
7.
LSI PIN FUNCTIONS
7-1. CPU:LSI1 ..............................................................................................................20
7-2. RAM:LSI2 AND LSI3 (CXK58257) ....................................................................... 21
7-3. ROM:LSI4 (
µPD23C1001EAGZ) ..........................................................................22
7-4. VOLTAGE REGULATOR:REG1 (S-81253) ......................................................... 23
7-5. VOLTAGE DETECTOR:DET1 (RH5VL46CA) ...................................................... 23
8.
TROUBLESHOOTING .................................................................................................24
9.
DIAGNOSTICS .............................................................................................................27
10.
ASSEMBLY VIEW ........................................................................................................33
11.
PARTS LIST .................................................................................................................35
-- 1 --
1.
SCHEMATIC DIAGRAM
1-1. MAIN PCB
-- 2 --
1-2. KEY MATRIX 1
-- 3 --
1-3. KEY MATRIX 2
M
M+
MR
%
'
MC
÷
9
C
AC
x
6
8
7
3
5
4
0
+
=
2
1
.
CODE:22
CODE:17
CODE:16
CODE:23
CODE:21
CODE:18
CODE:13
CODE:12
CODE:19
CODE:20
CODE:14
CODE:09
CODE:08
CODE:15
CODE:10
CODE:05
CODE:04
CODE:11
CODE:06
CODE:00
CODE:07
CODE:01
CODE:03
CODE:02
KY1
KY2
KY3
KY4
KY5
KY6
KY7
KY8
KY1
KY2
KY3
KY4
KY5
KY6
KY7
KY8
1
2
3
4
5
6
7
8
9
10
11
12
FG
FG
KY1
KY2
KY3
KY4
KY5
KY6
KY7
KY8
FG
FG
HS3
FG
To
Main
PCB