Casio SF5300E Service Manual
SF-5300E(LX-551AQ)
JAN. 1995
(with price)
SF-5300E
R
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 (
7-4. VOLTAGE REGULATOR:REG1 (S-81253) .........................................................23
7-5. VOLTAGE DETECTOR:DET1 (RH5VL46CA)......................................................23
8. TROUBLESHOOTING .................................................................................................24
9. DIAGNOSTICS .............................................................................................................27
µPD23C1001EAGZ) ..........................................................................22
10. ASSEMBLY VIEW........................................................................................................33
11. PARTS LIST .................................................................................................................35
1. SCHEMATIC DIAGRAM
1-1. MAIN PCB
— 1 —
1-2. KEY MATRIX 1
— 2 —
1-3. KEY MATRIX 2
HS3
FG
FG
KY1
KY2
KY3
KY4
KY5
KY6
KY7
KY8
To Main PCB
FG
FG
1
2
3
4
5
6
7
8
9
10
11
12
KY1
KY1
KY2
KY3
KY4
KY5
KY6
KY7
KY8
KY2
M– M+
KY3
CODE:03CODE:02
MR
CODE:01
KY4
%
CODE:07
'
CODE:06
MC
CODE:00
KY5
÷
CODE:11
9
CODE:10
C
CODE:05
AC
CODE:04
KY6
x
CODE:15
6
CODE:14
8
CODE:09
7
CODE:08
KY7
–
CODE:19
3
CODE:18
5
CODE:13
4
CODE:12
0
CODE:20
KY8
+
CODE:23
=
CODE:22
2
CODE:17
1
CODE:16
.
CODE:21
FG
— 3 —
2. SPECIFICATIONS
2-1. General
Display element: 16-column × 4-line LCD
Memory capacity: 64 kB (60972 bytes)
Main component: LSI
Power supply: 2 lithium batteries (CR2032)
Power consumption: 0.05 W
Battery life: *
Approximately 400 hours continuous operation in Telephone Directory
Approximately 350 hours repeating one minute of input and 10 minutes of display in Telephone
Directory
Approximately 12 months for memory backup
* The batteries that have been installed in this unit when user purchased it are for the factory test, so it will
be impossible to fully satisfy the above specifications when these batteries are used.
Auto power off: Approximately 6 minutes after last key operation
Ambient
temperature range: 0°C ~ 40°C (32°F ~ 104°F)
Dimensions (HWD):
Unfolded: 8.4 x 139 x 148 mm (3/8 x 5 1/2 x 5 7/8 inches)
Folded: 15.8 x 139 x 74 mm (5/8 x 5 1/2 x 2 7/8 inches)
Weight: 115 g (4 oz)
Current consumption:
Power Switch Maximum [µA]
OFF 11.0
ON 510
2-2. Function
Main Modes:
Telephone Directory, Memo, Schedule Keeper, To Do, Expense, Reminder, Calendar, Home Time,
World Time and Calculator.
Data storage:
Storage and recall of telephone, memo, schedule, to do, expense, reminder data; calendar display;
secret area; editing; memory status display
Clock:
World time; reminder alarm; schedule alarm; daily alarm; accuracy under normal temperatures; ±3
seconds average
Calculation:
10-digit arithmetic calculations; arithemetic constants (+, –, ×, ÷); independent memory; percentages; square roots; 20-digit approximations; date calculations; other mixed calculations
Language Capability:
English, German, French, Italian, Spanish.
— 5 —
Keys:
Key Cap Name Function
ACC
CAL
CALENDAR
CAPA
CAPS
CONT
DEL
Accent key
Calculator Mode key
Calendar key
Capacity key
Caps key
Contrast key
Cursor Right key
Cursor Left key
Cursor Up key
Cursor Down key
Delete key
Use this key to input accented characters.
Press this key to enter the Calculator Mode.
Press this key to enter the Calendar Mode.
Hold down this key to display the current status of
the memory.
Press this key to shift-lock the keyboard between
upper-case and lower-case characters.
Press this key when you want to adjust the bright-
ness of the display.
Press this key to move the cursor to the right.
Press this key to move the cursor to the left.
Press this key to move the cursor up, or to scroll
the display.
Press this key to move the cursor down, or to scroll
the display.
Press this key to delete the character at the current
cursor position. Holding down this key deletes
characters at high speed.
DISP CHNG
ESC
EXPENSE
FUNCTION
HOME/WORLD
INS
A~Z
MEMO
↵
NEXT
Display Change key
Escape key
Expense Mode key
Function key
Home/World Time key
Insert key
Letter keys
Memo Mode key
Newline key
Next key
Press this key to switch between the index display
format and the data display format.
Press this key to interrupt any operation.
Press this key to enter the Expense Mode.
Press this key to display function menus.
Press this key to display the current Home Time
and World Time.
Press this key to open a space at the current
cursor position. Holding down this key inserts
spaces at high speed.
Press these keys to enter the corresponding letter.
Use the CAPS and SHIFT key to switch between
upper-case and lower-case letters.
Press this key to enter the Memo Mode.
Press this key to create a new line within a data
entry.
Press this key to complete input of a data entry
and move to the next data entry.
1~0
Numeric keys
Press these keys to enter the corresponding
number.
— 6 —
Key Cap Name Function
OFF
ON CLEAR
REMINDER
SCHEDULE
SEARCH
SET
SHIFT
SPACE
SMBL
TEL
Off key
Power On/Clear key
Reminder Mode key
Schedule Mode key
Search key
Secret key
Set key
Shift key
Space key
Symbol key
Telephone Directory
key
Press this key to switch power off.
• Press this key to switch power on.
• Press this key to clear the display.
Press this key to enter the Reminder Mode.
Press this key to enter the Schedule Keeper.
Press this key to start a search for data stored in
memory.
Use this key to register a password, to access the
secret memory area, and to exit the secret memory
area.
Press this key to store input data into memory.
Press this key to temporarily shift the keyboard for
one character.
Press this key to input a space.
Press this key to display a menu of symbols on the
display.
Press this key to enter the Telephone Directory.
TIME/DATE
To Do
Time/Date key
To Do Mode key
Press this key to enter values that represent hours,
minutes, years, months, or dates.
Press this key to enter the To Do Mode.
— 7 —
Auto Sort Sequence:
Telephone Directory data items are automatically sorted in alphabetical order according to the first
letter in the NAME entry. The following table shows the sequence used for data sorts.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
§
(space)
!
”
#
$
%
&
’
(
)
*
+
,
—
.
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
=
>
?
@
A
B
C
D
E
F
G
H
J
K
L
61
62
63
64
65
66
67
68
69
^
a
b
c
d
e
70
71
72
I
73
g
h
74
75
k
76
91
[
92
\
93
]
94
95
96
97
98
99
100
f
Ó
Ú
101
102
103
i
104
j
Ò
Ù
105
106
l
121
{
|
122
|
123
}
124
~
125
Á
126
É
127
Í
128
129
130
À
131
È
132
Ì
133
134
135
Â
136
Ê
Ö
Ü
Ã
Õ
Ñ
IJ
Æ
151
â
152
ê
153
î
154
ô
155
û
156
¿
157
Ä
158
Ë
159
Ï
160
161
162
163
164
165
166
ij
æ
ç
å
ø
£
¥
Ω
ª
º
×
÷
±
0
2
3
17
18
19
20
21
22
23
24
25
26
27
28
29
30
/
0
1
2
3
4
5
6
7
8
9
:
;
<
47
48
49
50
51
52
53
54
55
56
57
58
59
60
M
N
O
P
Q
R
S
U
V
W
X
Y
77
78
79
80
81
82
83
T
84
85
86
87
88
89
Z
90
m
w
107
108
n
109
o
110
p
111
q
112
r
113
s
114
t
115
u
116
v
Ô
Û
117
118
x
119
y
120
z
137
Î
138
139
140
¡
141
á
142
é
143
í
144
ó
145
ú
146
à
147
è
148
ì
149
ò
150
ù
Ç
Å
Φ
167
168
169
170
ß
171
¶
172
¢
173
ä
174
ë
175
ï
176
ö
ü
ã
õ
ñ
µ
—
1
—
4
—
ƒ
Fr
←
→
1
2
3
4
|
— 8 —
2-3. Storage Capacitiy
The 64K bytes memory capacity includes a 60972 bytes user area. The following shows examples
of what this means for the storage of data in each mode.
Telephone Directory
Approximately 2903, under the following conditions:
8-character name
10- character telephone number
Approximately 1451, under the following conditions:
8-character name
10- character telephone number
20-character address
Memo
Approximately 2771, 20-characer memos.
Schedule Keeper
Approximately 1905, under the following conditions:
1 item per day, 20 characters per item
30 days per month
Starting time specified, alarm time set
Approximately 2177, under the following conditions:
1 item per day, 20 characters per item
30 days per month
Starting time specified, no alarm time
To Do
Approximately 2258, 20-character items.
Expense
Approximately 2102, under the following conditions:
4 items per day, 30 days per month
up to $999.99 per amount item
8-character payment type
8-character expense type
Reminder
Approximately 3586, under the following conditions:
10 characters per item
Alarm time set
Approximately 4064, under the following conditions:
10 characters per item
No alarm time
— 9 —
3. GENERAL GUIDE
3-1. Outward
Display
Mode Keys
Power OFF
Key
Power ON/
Clear Key
Connector
Terminal
Lock
Numeric Keys
Cursor Keys
Keyboard
3-2. About data errors
Whenever you switch on the power of the SF Unit, it performs a self-check before beginning
operation. If the SF Unit detects a problem with the data stored in memory, it displays the following
message.
DATA ERROR!
CONSULT
THE OWNER'S
MANUAL
CAPS
Note that once data is lost it cannot be recovered. Such data errors are generally caused by one of
the following problems.
• Interruption of battery power.
• Severe electrostatic charge, impact, change in temperature, or change in humidity.
• Hardware problem.
Once the Data Error display appears, you will not be able to input or edit data, though you will be able
to recall data after pressing CLEAR to clear the error message. In order to return memory to normal
(allowing further input and editing of data), you must perform the RESET operation to clear the
memory of all data. Before doing so, you may want to recall important data and write it down (if you
don't already have a copy). You can then re-input the data after clearing the memory.
3-3. About the memory overflow message
The memory overflow message appears on the display when the data you are trying to store exceeds
memory capacity.
When this happens, perform the two following operations.
• Press or to display the data you are trying to input, and reduce the number of characters.
If the memory overflow message appears again when you try to store the data, try the next
operation below.
• Press CLEAR to display the input prompt for the mode you are in ("NAME?" "MEMO?"). Next,
delete data items you no longer need to make room for the new data.
— 10 —
3-4. Message Table
Message Meaning Action
NO DATA!
NOT FOUND!
MEMORY FULL!
ALARM TIME
ALREADY
USED!
ALARM TIME
ALREADY
PASSED!
SECRET
DATA!
PASSWORD
MISMATCH!
Search operation attempted when
no data is stored in memory.
Data specified in search operation
does not exist in memory.
No more room in memory for storage
of data.
Attempt to set a Schedule Keeper or
a Reminder Mode alarm time that is
already used for another entry.
Attempt to set a Schedule Keeper
alarm time for a time/data that is
already passed.
Alarm for a secret memory area
data item is sounding.
Attempt to enter the secret memory
area using a password that does not
match the one preset for the secret
area.
Current search operation
cannot be performed.
Change specification or cancel
search.
Delete unnecessary data items
from memory.
Set a different alarm time or
change the existing alarm time
to another one.
Set a different alarm time (for a
future time/date).
Enter the secret memory area
to veiw details of the alarm.
Use the correct password.
TRANSMIT
ERROR!
DATA ERROR!
CONSULT
THE OWNER'S
MANUAL!
SAME TYPE
ALREADY
USED!
Error during data communications.
Data corrupted by strong impact,
electrostatic charge, etc.
Attempt to store a label that is
identical to one already stored.
3-5. To adjust the display contrast
1. Enter the Telephone Directory Mode.
• You could enter any mode except the Calculator mode here.
2. Press CONT.
3. Use the and keys to adjust the contrast.
✻✻✻✻ CONTRAST ✻✻✻✻
(LIGHTER)
(DARKER)
CAPS
Cancel the data communications operation and try again.
See page 12 of this manual.
Use a different label.
4. After you are finished, press ESC to clear the contrast adjustment display.
— 11 —
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