Casio CSF-4450 Troubleshooting guide

R
(without price)
OCT. 1995
CSF-4450/4650/4950(ZX-855✽E/✽F)
(Version ✽E and ✽F)
Caution:CSF-4✽50 includes 2 kinds of version-✽E and version-✽F. The functions are exactly the same
between two versions. As for details, refer to page-1.
INDEX

CONTENTS
FEATURES ..............................................................................................................................1
SPECIFICATIONS ...................................................................................................................2
GENERAL GUIDE ...................................................................................................................5
BATTERY REPLACEMENT ....................................................................................................6
RESET OPERATION...............................................................................................................7
TO SAVE THE DATA ..............................................................................................................9
PIN FUNCTION......................................................................................................................10
DIAGNOSTIC PROGRAM.....................................................................................................11
ERROR MESSAGE ...............................................................................................................14
SCHEMATIC DIAGRAMS .....................................................................................................15
EXPLODED VIEW .................................................................................................................23
PARTS LIST ..........................................................................................................................24

— 1 —
Model Note Capacity PCB ass'y TAB-LSI
CSF-4450 Version✽EAE Standard 32KB Z855-1E ASS'Y (MC100012✽1) OC3015-F1 SUB ASS'Y
CSF-4650 EE Standard 64KB Z855-1E ASS'Y (MC100012✽2)
FE B.O.S.S.
CSF-4950 IE Standard 128KB Z855-1E ASS'Y (MC100012✽3)
JE B.O.S.S.
CSF-4450 Version✽FAF Standard 32KB Z855-1 ASS'Y (MC100011✽1) COF3011-F1 SUB ASS'Y
CSF-4650 EF Standard 64KB Z855-1 ASS'Y (MC100011✽2)
FF B.O.S.S.
CSF-4950 IF Standard 128KB Z855-1 ASS'Y (MC100011✽3)
JF B.O.S.S.
Version
RESET
5M 111A
Backup Battery Cover
XX XXXE: Version-]E
XX XXXA: Version-]F
When the last letter of production number is E it is version-]E. When A, version-]F.
CSF-4✽50 includes 2 kinds of version-✽E and version-✽F as shown in the table above. Although the TAB-LSI is different
between two versions the functions are exactly the same.
A difference of two versions (✽E and ✽F) cannot be confirmed from the appearance, but it is recognized by production
number on back of the backup battery cover as shown below.
VERSION TABLE
FEATURES
3-color display
The display shows data in three colors: orange, blue and green. Different colors can be used to highlight
specific dates in the Calendar, and even the color of text data can be specified.
Desktop Menu System
Simply point to the item that represent the function you want to use and press a button.
Do Today Function
Every time you turn on the unit, any Schedule Keeper items scheduled for that date appear on the
display.
Powerful data bank functions
Telephone Directory, Business Card Directory, Memo, To Do, Expense Manager, Reminder, and
Schedule Keeper.
Secret Drawer
A convenient place to lock up confidential information using a secret password.

— 2 —
Calendar - Schedule Keeper - Reminder - To Do linking
Reminder and To Do items are automatically displayed in the applicable Schedule Keeper dates.
Markers appear on the Calendar display to indicate dates for which Schedule Keeper, Reminder, and
To Do items are scheduled.
Timepiece with Home time and World Time
Dual timekeeping for two different locations.
Powerful alarm functions
In addition to the standard daily alarm, you can also set alarms for Schedule Keeper, Reminder, and
To Do items.
Calculator
A 12-digit arithmetic calculator is just the thing for those quick, on-the-go calculations.
Data Communication
Exchange data with another CSF Unit or with a CASIO SF Unit.
SPECIFICATIONS
Memory Capacity
Memory capacity differs according to model. The following shows the memory capacity for each
available model.
Model Memory
CSF-4450 32K bytes (27,337 bytes)
CSF-4650 64K bytes (60,105 bytes)
CSF-4950 128K bytes (125,641 bytes)
The following shows the number or items that can be stored in each model (CSF-4450/4650/4950).
Telephone Directory
Approximately 1,200/2,700/5,700, under the following conditions:
8-character name
10-character telephone number
Approximately 600/1,300/2,900, under the following conditions:
8-character name
10-character telephone number
20-character address
Business Card Directory
Approximately 300/700/1,500, under the following conditions:
10-character employer name
8-character personal name
10-character telephone number
10-character position
10-character department
20-character address
Memo
Approximately 1,100/2,600/5,400, 20-character memos.
To Do
Approximately 700/1,600/3,400, under the following conditions:
20 character description
Deadline set

— 3 —
Schedule Keeper
Approximately 700/1,500/3,200, under the following conditions:
20 character description
Illustration used
Starting time specified, alarm time set
Approximately 900/2,000/4,100, under the following conditions:
20 character description
Illustration not used
Starting time specified, no alarm time
Reminder
Approximately 1,500/3,300/6,900, under the following conditions:
10 character description
Alarm time set
Approximately 1,700/3,700/7,800, under the following conditions:
10 character description
No alarm time
Expense Manager
Approximately 800/1,800/3,800, under the following conditions:
10 character description
Expense type and payment type set
Main Modes:
Telephone Directory, Business Card Directory, Memo, Schedule Keeper, To Do, Expense Manager,
Reminder, Calendar, Home Time, World Time and Calculator
Data storage:
Storage and recall of telephone, business card, memo, schedule, to do, expense, reminder data;
calendar display; secret drawer; editing; memory status display
Clock:
Worldtime; reminder alarm; schedule alarm; to do alarm; daily alarm; accuracy under normal tempera-
tures: ±3 seconds average
Calculation:
12-digit arithmetic calculations; arithmetic constants (+, -, ×, ÷); independent memory; percentages;
square roots; 24-digit approximations; date calculations; other mixed calculations
General:
Display element: 16-column ×4-line LCD
Main component: LSI
Power supply:
Main: Two AAA-size batteries (Type: R03 (UM-4) or LR03 (AM4))
Back-up: One CR2032 lithium battery
Current consumption:
ON: 4 mA or under (TEL mode)
OFF: 25 µA or under
Backup Battery: 10 µA or under
Low Battery message:
Main battery: 2.5 V ±2.5%
Backup battery: 2.6 V ±2.5%
Forced power off:
2.3 V ±2.5%

— 4 —
Battery life:
Main: Approximately 100 hours continuous display in Telephone Directory (approxi-
mately 180 hours on type LR03 (AM4)); approximately 80 hours repeating one
minute of input and 10 minutes of display in Telephone Directory (approximately
150 hours on type LR03 (AM4))
Back-up: 5 years if main batteries are replaced as soon as they become weak. 2 year if
dead main batteries are left in the unit.
Power consumption: 0.06 W
Auto power off: Approximately 6 minutes after last key operation
Operating temperature: 0°C ~ 40°C (32°F ~ 104°F)
Dimensions:
Unfolded: 10.5H ×145W ×176.5D mm (7/16"H ×511/16"W ×615/16"D)
Folded: 14.2H ×145W ×95D mm (9/16"W ×511/16"W ×33/4"D)
Weight: 142.2 g (5 oz) including batteries

— 5 —
Home Time, World
Time, and Alarm
Secret Drawer
Memo
Calculator
To Do
Telephone Directory
and Business Card
Directory
Calendar, Schedule
Keeper, Reminder and
Expense Manager
GENERAL GUIDE
About the desktop...
The desktop gives you point-and-select access to the data management features of the CSF Unit.
Whenever you want to return to the desktop, simply press the MENU button.
• Note that one of the icons on the desktop is flashing, This means that the icon is selected.
How to use the desktop
1. Use the cursor keys to move the flashing around the desktop until the one you want is selected
(flashing).
2. After selecting an icon, press OK to access the functions of that icon.
• Selecting some icons (like the Clock and Telephone) cause another selection screen to appear.
• Details on actually using the features and functions that you access from the desktop are described
in the other sections of this manual.
Changing the Desktop Screen's Window Scenery
You can change the scenery that is outside the desktop screen's window to any one of the scenes
shown below. Simply display the desktop screen and press the COLOR SELECT key that corresponds
to the scenery you want to select.
ORG: Night-time city scene
BLU: Daytime city scene
GRN: Beach scene
OFF key - Press this key to turn power off.
ON key - Press this key to turn power on.
Cursor Key Pad
Keyboard
Display
MENU key COLOR SELECT keys

— 6 —
AAA-size
batteries
Main battery holder
RESET
Adjusting the Display Contrast
The following procedure describes how to adjust the color contrast, which controls the relative darkness
and lightness of each color on the display.
To adjust the display contrast
1. While the desktop is on the display, press FUNC.
2. Press 1to select SYSTEM .
3. Press to display the second SYSTEM menu.
4. Press 1to select CONTRAST .
5. Use and to move the pointer to the color whose contrast you want to set.
6. Use and to adjust the contrast of the currently selected color.
• You can adjust the overall contrast of the display by pressing or .
• Whenever you press one of the COLOR SELECT keys, the color contrast is returned to its initial
default setting.
7. After you finish adjusting the display contrast, press OK.
• Color contrast settings are registered as soon as you make them. Because of this, pressing either
OK or ESC quits the color contrast procedure only. Pressing ESC does not return the color contrast
setting to what is was.
Notes
• Temperature changes can cause changes in background color and the tint of display colors .
• Low battery power can also cause flickering of the display and changes in the tint of display colors.
BATTERY REPLACEMENT
Main Battery
Before replacing the main batteries, note the following precautions:
• Do not remove the main batteries from the CSF Unit while back-up battery is removed.
• Be sure to replace both batteries at the same time, and do not use an old battery with a new one.
1. Press OFF to switch power OFF.
2. Press down at the two locations indicated by , and slide in the direction indicated by the arrow.
Pointer (currently
selected color)
∇
<O B G>
(ORG)
(BLU)
(GRN)

— 7 —
RESET
button
RESET
Back-up battery
compartment
cover
RESET
Back-up Battery
Before replacing the back-up battery, note the following precautions:
• Do not remove the back-up battery from the CSF Unit while main batteries are removed.
• Be sure to replace the back-up battery at least once every five years. Otherwise, you run the risk of
losing data stored in memory.
1. Press OFF to switch power OFF.
2. Remove the screws that hold the back-up battery compartment cover in place, and remove the cover.
3. Insert a thin, pointed object into (A) and remove the old battery.
RESET OPERATION
1. Press ON to switch power ON.
2. Press the RESET button with a thin, pointed object.
Warning!
The next step deletes all data stored in the CSF Unit's memory. Make sure that you really want to delete
the data before you continue!
3. Remove both old batteries and replace them with two new ones.
• Make sure that the positive (+) and negative (-) ends are facing correctly.
4. Replace the holder.
5. Turn on power.
• The Home Time screen always appears whenever you turn power on for the first time after replacing
batteries.
6. Check the Home Time setting and make changes if necessary.
(A)
CR2032 lithium
battery

— 8 —
3. Press 1to select ALL RESET .
Note
•The above message always appears in English, regardless of the system language setting.
4. Press OKto reset the memory and delete all data or ESC to abort the reset operation without deleting
anything.
• After the ALL RESET operation is complete, the LANGUAGE screen appears on the display.
5. Check the Home Time setting and make changes if necessary.
Following the all reset operation, the CSF Unit settings are initialized as noted below.
Home Time: LON
1996/1/1 MON
12:00 AM
12-hour format
World Time: NYC
Daily Alarm: 12:00 PM
Sound: Data alarm (Schedule alarm, Reminder alarm and To Do alarm) — ON
Daily alarm — OFF
Key — ON
Messages: English
Character input: CAPS
To perform SECRET RESET
Important!
• The following procedure erases all data stored in the secret drawer. Make sure you do not need any
ofthe datain thesecret drawerbefore deletingit. Youcan transferdata youmight needto thedesktop
(page 9) before performing this procedure.
• Note that this unit has no procedure for deleting the password only (and leaving secret drawer
contents) or secret drawer contents only (and leaving the password).
To perform a SECRET RESET, follow the same procedure as that described under "RESET
OPERATION" on page 7, except you should select " SECRET RESET " in step 3.

— 9 —
How to transfer the data
1. Under calculator mode, set the date of the slave unit to Feb. 3rd, 1901.
Operation : ON OK 1 DATE 2 DATE 3 DATE M+
If you do not set the date, the "PASSWORD" is not transferred to the slave unit.
2. Check the hardware parameters of both unit, and if both units have another condition, reset as
follows;
MENU FUNC 2 3
3. Set up the slave unit.
• On the desktop, select the telephone icon
and press OK .
• Select the home icon and press OK .
• FUNC 2 2
4. Set up the customer's unit.
MENU FUNC 2 1 3 OK
If you can not succeed to transfer the data, press ESC key on both units and try to transfer the data again
following the procedure above.
TO STOP
PRESS [ ESC ]
DATA RECEIVE OK!
TO SAVE THE DATA
CSF-4450/4650/4950 can transfer the customer's data to another CSF unit with memory protection only
when replacing the LCD or the outer case.
To connect the CSF Unit to another CSF Unit
1. Make sure that the power of both units are switched off.
2. Remove the covers from the data communications jacks on the two CSF Units.
3. Connect the two units using the SB-62 cable.
OK
TO STOP
PRESS [ ESC ]
DATA SENDING!
//////////// SET UP PAR. ////////////
PARITY E/O/NN
BIT LENGTH 77/ 8
BPS 4800 / 96009600

— 10 —
Pin No. Pin Name Input/Output Function
1 ~ 14 KO14 ~ KO1 O Key common signal
15 ~ 22 KI8 ~ KI1 I Key input signal
23 BUFON O Chip select for RAM
24 IT2 I Interrupt input
25 IT0 I Interrupt input
26 ~ 46 AO20 ~ AO0 O Address bus
47 ~ 54 IO0 ~ IO7 I / O Data bus
55 OEBO O Output enable signal for RAM
56 WEBO O Write enable si
g
nal for RAM
57 ~ 64 CS10BO ~ CS3BO O Chip selectin
g
si
g
nals
65 OPT7 O Reset si
g
nal output
69 ~ 72 OPT3 ~ OPT0 O Chan
g
eover si
g
nal
73 PORT7 I Receiving terminal for data communication
74 PORT6 I Receiving terminal for data communication
75 PORT5 O Transmitting terminal for data communication
76 PORT4 O Transmitting terminal for data communication
80 PORT0 I Low battery message for back-up battery (2.6V)
81 VSS I GND
82 PI I 1MHz clock input
83 PO O 1MHz clock output
84 VDD I +3V source
85 XO O 4.3MHz clock output
86 XI I 4.3MHz clock input
87 VCC I +3V source
88 VREG2 O Volta
g
e for main switch detection
89, 90 TS1, TS2 — Test terminals of factor
y
purpose onl
y
91 VSSR I GND
92 BZZ1 O Buzzer si
g
nal output
93 BZZ2 O Buzzer si
g
nal output
94 VSS I GND
95 OCLK O Clock output
96 ITOFF I Switchin
g
terminal from main switch
97 TEMU — Test terminals of factor
y
purpose onl
y
98 SW I Receivin
g
terminal for reset switch
99 VDB I +3V source
100 VREG1 — Test terminals of factor
y
purpose onl
y
101 VREG4 O +3V source for ROM
102 VREG5 — Test terminals of factor
y
purpose onl
y
103 VDT1I I Forced power off detecting terminal (2.3V)
104 VDT2I I Low battery message for main battery (2.5V)
105 VREG3 — +3V source for RAM
PIN FUNCTION
CPU HCD62121A02 (HC-3017) : COB
NOTE: The CPU is bonding on the PCB. If the CPU is defective, replace the Z855-1 PCB ass'y
because the CPU cannot be replaced.

— 11 —
STEP OPERATION DISPLAY NOTE
Enter the
diagnostics Press ON while shorting the Test pad. ///// SELF TEST PROG /////
PRESS OK KEY
QUIT BY OFF KEY
CASIO OCT 1995
Main menu OK TEST
1 DISP
2 MEMORY
3 KEY
Display
Check 1DISPLAY 1 DISPLAY
2 FRAME FREQ.
1No color, no display
OK Orange color is displayed
OK Green color is displayed
OK Blue color is displayed
OK Checkers are displayed
OK Reverse checkers are displayed
OK Frame is displayed
OK Dots at the 4 corners are
displa
y
ed
OK Vertical 4 colors are displayed
OK Horizontal 4 colors are displayed
OK TEST
1 DISP
2 MEMORY
3 KEY
4 BUZZER
5 I/F
6 CONT
7 RESET
4 BUZZER
5 I/F
6 CONT
7 RESET
DIAGNOSTIC PROGRAM
To enter the diagnostic program, proceed as follows;
1 : Open the battery cover and slide the main switch to the arrow side.
2 : Press ON while shorting the Test pad.
Bottom View
RESET
Test pad Main switch

— 12 —
STEP OPERATION DISPLAY NOTE
Memory
Check 2MEMORY
1 WR 1
2 READ 1
1RAM WRITE 1 Write the test pattern 1 into RAM
MEMORY
1 WR 1
2 READ 1
After 1 sec.
2EXECUTING !! Read the test pattern 1 from RAM
CMPLETE !!
32/64/128 KB After 1 sec.
Memory
Check OK MEMORY
1 WR 1
2 READ 1
3RAM WRITE 2 Write the test pattern 2 into RAM
MEMORY
1 WR 1
2 READ 1
After 1 sec.
4EXECUTING !! Read the test pattern 2 from RAM
CMPLETE !!
32/64/128 KB After 1 sec.
OK MEMORY
1 WR 1
2 READ 1
5XXXX Wiring check for ROM
Memory
Check OK MEMORY
1 WR 1
2 READ 1
6CHECK SUM
TY SZ SUM XOR
C5 0 512 XXX XX
Check SUM value
Version- ✽E = 65D6
Version- ✽F = E146
OK MEMORY
1 WR 1
2 READ 1
ESC TEST
1 DISP
2 MEMORY
3 KEY
3 WR 2
4 READ 2
5 DUMP
6 CHKSUM
3 WR 2
4 READ 2
5 DUMP
6 CHKSUM
3 WR 2
4 READ 2
5 DUMP
6 CHKSUM
3 WR 2
4 READ 2
5 DUMP
6 CHKSUM
3 WR 2
4 READ 2
5 DUMP
6 CHKSUM
3 WR 2
4 READ 2
5 DUMP
6 CHKSUM
3 WR 2
4 READ 2
5 DUMP
6 CHKSUM
4 BUZZER
5 I/F
6 CONT
7 RESET

— 13 —
STEP OPERATION DISPLAY NOTE
KEY CHECK 3 KEY & TIME
1 RANDOM
2 AUTO
3 TIME
1 No display
ESC, 1, 2, 3....... 16 17 18 19 ..... To push the key sequentially that
key code is being appeared in
the displa
y
.
OK TEST
1 DISP
2 MEMORY
3 KEY
Buzzer
Check 4 BUZZER 1 : Key input sound 2 : Sound alarm 1
3 : Sound alarm 2
ESC TEST
1 DISP
2 MEMORY
3 KEY
Interface
Check 5 I/F
7N9
The parameter can be changed
as follows;
Key "5" : Bit length 7 or 8 bit
Key "6" : Parity bit N(Non),
E(Even) or O(Odd)
Key "7" : BPS 9(9600) or 4(4800)
1EXECUTING !! Send the code "H"
2 No display Display the received charactor.
3EXECUTING !! Send the ASCII code
4EXECUTING !! Loop back check
ESC I/F
7N9
CONTRAST
ADJ. 6 TEST 1 DISP
2 MEMORY
3 KEY
Contrast up :
or SHIFT +
Contrast down :
or SHIFT +
//////////// CONTRAST ////////////
<O B G>
(ORG)
(BLU)
(GRN)
Contrast adjustment
Cursor keys //////////// CONTRAST ////////////
<O B G>
(ORG)
(BLU)
(GRN)
Adjust the color using cursor keys
until the primary colors appear
accurately.
4 BUZZER
5 I/F
6 CONT
7 RESET
1 BEEP
2 ALARM 1
3 ALARM 2
4 BUZZER
5 I/F
6 CONT
7 RESET
4 BUZZER
5 I/F
6 CONT
7 RESET
1 TRANS
2 RECEIVE
3 ASCII
4 LOOP
1 TRANS
2 RECEIVE
3 ASCII
4 LOOP

— 14 —
STEP OPERATION DISPLAY NOTE
OK TEST
1 DISP
2 MEMORY
3 KEY
RESET 7 NAME?
TELEPHONE
0
END
4 BUZZER
5 I/F
6 CONT
7 RESET
Message
NO DATA!
DATA ITEM NOT
FOUND!
MEMORY FULL!
ALARM TIME
ALREADY USED!
ALARM TIME
ALREADY PASSED!
SECRET DATA!
PASSWORD
MISMATCH!
TRANSMIT ERROR!
STOPPED!
SAME TYPE
ALREADY USED!
NOTICE!
CONSULT THE
OWNER'S MANUAL!
Meaning
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, a Re-
minder or a To Do alarm time that is already
used for another entry.
Attempt to set a Schedule Keeper, a Re-
minder or a To Do alarm time for a time/date
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.
Error during data communications.
Data communication has been interrupted.
Attempt to store a label that is identical to one
already stored.
•This message appears when this is the first
time you ever turned on the CSF Unit.
•Data corrupted by strong impact, electro-
static charge, etc.
Action
Currentsearchoperationcan-
not be performed.
Change specification or can-
cel search.
Delete unnecessary data
items from memory.
Set a different alarm time or
changetheexistingalarmtime
to another one.
Set a different alarm time (for
a future time/date).
Enter the secret memory area
to view details of the alarm.
Use the correct password.
Cancel the data communica-
tions operation and try again.
Stop the data communication
procedure and try again.
Use a different label.
Perform the ALL RESET op-
eration.
ERROR MESSAGE

— 15 —
SCHEMATIC DIAGRAMS
VERSION*E
Main Block-1/2

— 16 —
VERSION*E
Main Block-2/2

— 17 —
VERSION*E
Display Block

— 18 —
VERSION*E
Key Matrix