Casio CFX9800G Service Manual

CFX-9800G(LX-392AA)

INDEX

MAR. 1995

(without price)

R

CONTENTS

1. SCHEMATIC DIAGRAM

1-1. Main PCB ................................................................................................. 1

1-2. Power Supply and Key Block ................................................................ 2

2. SPECIFICATIONS .......................................................................................... 3

3. GENERAL GUIDE ........................................................................................... 4

3-1. Modes....................................................................................................... 4

3-2. About Display Colors ............................................................................. 5

3-3. Color Contrast Adjustment .................................................................... 5

3-4. About Low Battery Warning................................................................... 6

4. REPLACING BATTERIES............................................................................... 6

4-1. To Replace the Main Power Supply Batteries ...................................... 7

4-2. To Replace the Memory Back Up Battery............................................. 8

5. RESET OPERATION....................................................................................... 8

6. WELDING CONDITION FOR THE CERAMIC OSCILLATOR

(CSTC4.30MG-TC) ................................................ 10

7. ERROR MESSAGE ....................................................................................... 10

8. OPERATION CHECK .................................................................................... 12

9. COLOR ADJUSTMENT ON OPERATION CHECK ...................................... 14

10. DATA TRANSFER CHECK........................................................................... 16

11. DATA COMMUNICATIONS .......................................................................... 17

11-1. Connecting Two CFX-9800G Units.................................................... 17

11-2. Before Starting Data Communications ............................................. 17

11-3. Setting Communications Parameters ............................................... 18

11-4. Using ALL, Range, and Factor........................................................... 19

11-5. Data Communications Precautions .................................................. 20

12. PIN FUNCTION

12-1. CPU (HD62119A02) ............................................................................. 21

12-2. ROM (MB834000CPF-G-4EP) ............................................................. 22

12-3. RAM (256RAM/3V)............................................................................... 22

13. TROUBLESHOOTING................................................................................... 23

14. DISASSEMBLY AND EXPLODED VIEW ..................................................... 24

15. PARTS LIST ................................................................................................. .28

1. SCHEMATIC DIAGRAM

1-1. Main PCB

NOTES

1. The terminals with mark are the checking
points for the power supply.

2. The terminals with mark are the checking
points for the function.

3. LSI5 and C14 are not used.

— 1 —

1-2. Power Supply and Key Block

— 2 —

2. SPECIFICATIONS

Display system: Three colors (orange, blue, green); 16-character × 8-line liquid crystal

display; 10-digit mantissa and 2-digit exponent for calculations; displays
binary, octal, hexadecimal, sexagesimal values, fraction, complex
number

Power supply: Main: Two AAA-size batteries (LR03 (AM4) or R03 (UM-4))

Memory protection: One CR2032 lithium battery

Power consumption: 0.1W
Battery life*: Main: Approximately 120 hours (continuous display of initial screen.) with

battery type LR03 (AM4)
Approximately 80 hours (continuous display of initial screen.) with
battery type R03 (UM-4)
Approximately 2 years (power switch off) with LR03 (AM4)/R03

(UM-4)
Memory protection: Approximately 2 years
* The batteries that have been installed in this unit when user purchased

it had been used in the factory test, so it will be impossible to fully satisfy
this specifications when these batteries are used.

Auto power off: Power is automatically switched off approximately six minutes after last

operation except when drawing dynamic graphs.

Ambient temperature range: 0°C ~ 40°C (32°F ~ 104°F)
Dimensions: 17.4mm H × 95.5mm W × 182.5mm D ( 5/8" H × 33/4" W × 71/8" D)
Weight: 200g (7.1 oz) including batteries
Accessories: Hard case

Current Consumption

TYP [µA] MAX [µA]
ON (MENU) 4610 5530
OFF 15

— 3 —

3. GENERAL GUIDE

3-1. Modes

You can control the operations of the unit by entering the correct mode. To select the mode you
need, select the appropriate icon from the Main Menu. The Main Menu appears whenever you
press the

The icon that is highlighted is the one that is currently selected. Use the cursor keys to move the
highlighting around the display to select the mode that you want. To enter the highlighted mode,
press the

• In addition to using the cursor keys to select a mode's icon, you can also select a mode by input-

ting a number or letter. Input the number or letter in the lower right corner of the icon to select the
mode you want.

• Use only the procedures described above to enter a mode. If you use any other procedure, you

may end up in a mode that is different than the one you thought you selected.

MENU

EXE

key.

key.

The following explains the meaning of each icon in the Main Menu.

COMP Mode

Use this mode for arithmetic calculations and function calculations, for drawing graphs
and for executing programs.

BASE Mode

Use this mode for binary, octal, decimal, and hexadecimal calculations and conver­sions. This mode is also used for logical operations.

SD Mode

Use this mode for single-variable statistical calculations (standard deviation), and for
drawing normal distribution and single-variable statistical graphs.

REG Mode

Use this mode for paired-variable statistical calculations (regression), and for drawing
paired-variable statistical graphs.

MAT Mode

Use this mode for matrix calculations.

GRAPH Mode

Use this mode to input functions and draw their graphs.

DYNA Mode

Use this mode to store graph functions and to draw graphs by changing the values for
variables in the functions.

— 4 —

TABLE Mode

Use this mode to store a function or recursion formula, to generate a solution table of
values produced when the values of variables in a function or recursion formula
change, and to draw graphs.

EQUA Mode

Use this mode to solve linear equations with two through six unknowns, quadratic
equations, and cubic equations.

PRGM Mode

Use this mode to store programs in the program area, to execute programs, and to
store and execute programs as file data.

LINK Mode

Use this mode to transfer program, function, matrix, and other memory data to another
unit.

OPTION Mode

Use this mode to adjust the color contrast of the display and to reset the calculator to
its initial settings.

3-2. About Display Colors

The calculator can display data in three colors: orange, blue, and green. The default color for graph
drawing and comment text accompanying a graph or program execution operation is blue, but you
can use the following procedure to change the color to orange or green if you want.

1. Display the Graph Color Menu.

SHIFT

COLOR

F1

(Orn)..Orange graph and comment text

F2

(Grn)..Green graph and comment text

2. Press the function key that correspond to the color you want to specify for graph drawing and

comment text, and then input the text.

3. Execute the function or run the program to display the graph and comment text in the color you

specify.

Orn Grn

F1 F2

3-3. Color Contrast Adjustment

Highlight the OPTION icon on the Main menu and then press

EXE

.

OPTION

COLOR CONTRAST

RESET

TO SELECT: [ ↓ ][ ↑ ]
TO SET : [EXE]

— 5 —

EXE

COLOR

O B G

ORANGE

BLUE

GREEN

– +

CONTRAST

INIT IN·A

F1

(INIT). Returns tint to default setting.

F2

(IN·A). Returns tint and contrast to default setting.

• To adjust the contrast

1. Use and to move the pointer to CONTRAST.

2. Use to make the figures on the display darker or to make them lighter.

3. Press

• To adjust the tint

1. Use and to move the pointer to the color you want to adjust (ORANGE, BLUE,

GREEN).

2. Use to move the setting toward the G (green) side or to move it to the O (orange) side.

3. Press

• When adjusting the color contrast, first adjust overall display contrast, and then adjust the tint of

each individual color.

• You can also adjust the overall contrast whenever any other screen is shown on the display by

pressing

MENU

to return to the Main Menu.

MENU

to return to the Main Menu.

SHIFT

and then or . Press

SHIFT

again to exit the contrast adjustment procedure.

F1 F2

3-4. About Low Battery Warning

If the following message appears on the display, immediately stop using the calculator and replace
batteries.

✽✽ Low battery! ✽✽

If you try to continue using the calculator, it will automatically switch power off, in order to protect
memory contents. You will not be able to switch power back on until you replace batteries.

Be sure to replace batteries at least once every two years, no matter how much you use the calcu­lator during that time.

4.REPLACING BATTERIES

Warning!

If you remove both the main power supply and the memory back up batteries at the same time, all
memory contents will be erased.

— 6 —

Precautions:

Incorrectly using batteries can cause them to burst or leak, possibly damaging the interior of the
unit. Note the following precautions:

• Be sure that the positive + and negative - poles of each battery are facing in the proper direc-

tions.

• Never mix batteries of different types.

• Never mix old batteries and new ones.

• Never leave dead batteries in the battery compartment.

• Remove the batteries if you do not plan to use the unit for long periods.

• Never try to recharge the batteries supplied with the unit.

• Do not expose batteries to direct heat, let them become shorted, or try to take them apart.

4-1. To Replace the Main Power Supply Batteries

* Never remove the main power supply and the memory back up batteries from the unit at the same

time.

* Be sure to switch the unit off before replacing batteries. Replacing batteries with power on will

cause data in memory to be deleted.

* Never replace the main power supply battery compartment cover or switch the calculator on while

the main power supply batteries are removed from the calculator or not loaded correctly. Doing so
can cause memory data to be deleted and malfunction of the calculator. If mishandling of batter­ies causes such problems, correctly load batteries and then perform the RESET operation to
resume normal operation.

* Be sure to replace all two batteries with new ones.
1 Switch the power of the calculator off, and slide the calcula-

tor into its hard case.

2 Remove screw A on the back of the calculator, and remove

the main battery compartment cover.

3 Remove the two old batteries.
4 Load a new set of two batteries, making sure that their

positive + and negative - ends are facing in the proper
directions.

5 Insert the tabs of the main battery compartment cover into

the slots in the back of the calculator and replace the cover.
Secure it in place with the screw.

ON

• Power will not switch on if you press

AC/

while the main

power supply battery compartment cover is open.

ON

6 Remove the calculator from its hard case and press

AC/

to

switch power on.

• Power supplied by memory back-up batteries while the

main power supply batteries are removed retains memory
contents.

• Do not leave the unit without main power supply batteries

loaded for long periods. Doing so can cause deletion of data
stored in memory.

Screw A

— 7 —

4-2. To Replace the Memory Back Up Battery

OPTION

TO SELECT: [ ↓ ][ ↑ ]
TO SET : [EXE]

COLOR CONTRAST

RESET

* Before replacing the memory backup battery, switch on the unit and check to see if the "Low

battery!" message appears on the display. If it does, replace the main power supply batteries
before replacing the back up power supply battery.

* Never remove the main power supply and the memory back up batteries from the unit at the same

time.

* Be sure to switch the unit off before replacing batteries. Replacing batteries with power on will

cause data in memory to be deleted.

* Be sure to replace the back up power supply battery at least once 2 years, regardless of how

much you use the unit during that time. Failure to do so can cause data in memory to be deleted.

1 Switch the power of the calculator off.
2 Remove screw B on the back of the calculator, and remove

the back-up battery compartment cover.

3 Remove the old battery.
4 Wipe off the surfaces of a new battery with a soft, dry cloth.

Load it into the calculator so that its positive + side is
facing up.

5 Insert the tabs of the back-up battery compartment cover

into the slots in the back of the calculator and replace the
cover. Secure it in place with the screw.

Screw B

6 Switch the power of the calculator on and check for proper

operation.

5. RESET OPERATION

Warning!

The procedure described here clears all memory contents. Never perform this operation unless you
want to totally clear the memory of the calculator.

You should perform the RESET operation whenever you want to initialize the calculator. If you need
the data currently stored in memory, be sure to write it down somewhere before performing the
RESET operation.

• To reset the calculator

1 Switch the power of the calculator on.
2 Press

MENU

to display the Main Menu.

3 Use the cursor keys to select the OPTION icon and

then press
the Main Menu is displayed.

EXE

. Or you can simply press

c

In

— 8 —

while

4Use to select RESET and then press

EXE

.

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽
✽

RESET

✽

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽

RESET

ALL MEMORIES?

RESET ALLN OYES

F1

5Press

6After you finish the RESET operation, adjust the color contrast.

Resetting the calculator initializes the unit to the following settings.

F1

(YES) to reset the calculator, or

F1

(YES)

Item

Mode

Unit of Angular Measurement

Norm

BASE-N

Value Memories

F6

(NO) to abort the reset operation.

Initial Setting

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽
✽
✽

RESET

✽
✽

ALL MEMORIES!

✽
✽

✽
✽
✽
✽
✽

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽

COMP

Deg

Norm 1

Dec

Clear

✽

Expanded Memory

Function Memory

Ans Memory

Graphic Display

Text Display

Equation Memory

Statistical Data Memory

Matrix Memory
Graphic Function Memory
Dynamic Graph Functions

Table & Graph Data

Input Buffer

Program/File Memory

Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear

— 9 —

• Be sure to always keep written copies of all important data in case
you accidently delete it using the RESET operation.

• If the calculator stops operating correctly for some reason, use a
thin, pointed object to press the RESET button on the back of the
calculator. This should make the RESET confirmation screen
appear on the display. Perform the procedure described above to
complete the RESET operation.

• If the RESET confirmation screen does not appear when you press
the RESET button, keep pressing the button until it does.

RESET button

6. WELDING CONDITION FOR THE CERAMIC OSCILLATOR (CSTC4.30MG-TC)

Because the heat-resisting test for welding the ceramic oscillator (CSTC4.30MG-TC) was adminis­tered by factory under the condition that weld temperature was 240 ± 5 °C and welding time was 3 ±
1 seconds after the preheating of 150 ± 30 °C temperature and 60 seconds time, it is recommended
that you should give first priority to take the welding condition, 150 ± 30 °C and 60 seconds for
preheating, and 230 ± 5 °C and less 20 seconds for welding, if you have to weld the ceramic oscilla­tor (CSTC4.30MG-TC).

7. ERROR MESSAGE

Message

Syn ERROR

Ma ERROR

Go ERROR

Meaning

1 Calculation formula contains an error.
2 Formula in a program contains an

error.

1 Calculation result exceeds calculation

range.

2 Calculation is performed outside the

input range of a function.

3 Illogical operation (division by zero,

etc.)

4 Poor precision in Σ calculation results.
5 Poor precision in differential calcula-

tion results.

6 Poor precision in integration calcula-

tion results.

7 Cannot find results of equation calcula-

tions.

1 No corresponding Lbl n for Goto n.
2 No program stored in program area

Prog n.

Countermeasure

1 Use or to display the point

where the error was generated and
correct it.

2 Use or to display the point

where the error was generated and
then correct the program.

1234

Check the input numeric value and
correct it.
When using memories, check that the
numeric values stored in memories are
correct.

5 Try using a smaller value for ∆x (x

increment/decrement).

6 Try using a larger value for n (number

of partitions).

7 Check the coefficients of the equation.

1 Correctly input a Lbl n to correspond to

the Goto n, or delete the Goto n if not
required.

2 Store a program in program area Prog

n, or delete the Prog n if not required.

— 10 —

Message

Defm

Meaning

Countermeasure

Ne ERROR

Stk ERROR

Mem ERROR

• Nesting of subroutines by Prog n ex­ceeds 10 levels.

• Execution of calculations that exceed
the capacity of the stack for numeric
values or stack for calculations.

1 Specified expanded value memory

does not exist.

2 Not enough memory to expand value

memories specified number.

3 Not enough memory to input a function

into function memory.

4 Not enough memory to create a matrix

using the specified dimension.

5 Not enough memory to hold matrix

calculation result.

6 Not enough memory to store statistical

data.

7 Not enough memory to input coeffi-

cient for equation.

8 Not enough memory to hold equation

calculation result.

9 Not enough memory to hold function

input in the Graph Mode for graph
drawing.

0 Not enough memory to hold function

input in the DYNA Mode for graph
drawing.

A Not enough memory to hold function or

recursion input in the TABLE Mode.

• Ensure that Prog n is not used to return
from subroutines to main routine. If
used, delete any unnecessary Prog n.

• Trace the subroutine jump destinations
and ensure that no jumps are made
back to the original program area.
Ensure that returns are made correctly.

• Simplify the formulas to keep stacks
within 10 levels for the numeric values
and 26 levels for the calculations.

• Divide the formula into two or more
parts.

1 Use

SHIFT

to correctly expand the

number of value memories.

234567890A

• Keep the number of value memories
you use for the operation within the
number of value memories currently
available.

• Simplify the data you are trying to store
to keep it within the available memory
capacity.

• Delete no longer needed data to make
room for the new data.

Arg ERROR

Dim ERROR

Incorrect argument specification for a
command that requires an argument.

• Illegal dimension used during matrix
calculations.

— 11 —

Correct the argument.

• Sci n, Fix n: n = integer from 0 through

9.

• Lbl n, Goto n: n = integer from 0 through

9.

• Prog n: n = 0 through 9, A through Z, r,

θ

.

• Defm n: n = integer from 0 up to the
number of remaining bytes.

• Check matrix dimension.

Message

Meaning

Countermeasure

TRANSMIT
ERROR!

RECEIVE
ERROR!

MEMORY
FULL!

Problem with cable connection or param­eter setting during data communications.

Problem with cable connection or param­eter setting during data communications.

Memory of receiving unit became full
during program data communications.

8.OPERATION CHECK

STEP

1

Use a thin and pointed object to
press the RESET button on the
back of the unit.

OPERATION

•Check cable connection.

•Check to see that the parameters of the
sending unit and receiving unit are
identical.

•Check cable connection.

•Check to see that the parameters of the
sending unit and receiving unit are
identical.

•Delete some data stored in the receiv­ing unit and try again.

DISPLAY

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽
✽✽

RESET

NOTE

Reset

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽

RESET

ALL MEMORIES?

RESET ALLYES NO

F1

2

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽
✽
✽

RESET

ALL MEMORIES !

✽
✽

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽

SHIFT

3

RUN / COMP
G-type
Angle
Display
M-D/Cpy

: REC/CON
: Deg
: Nrm1
: M-Disp

ZM PLT LIN CLS

AC/ON

4

ab/c

AC/ON

keys at same

Press

5

F6

LX392 TEST MODE

time.

6
7

1

EXE

No color, no display

(OFF)

1. LCD

2. KEY

3. RAM

4. ROM

5. DET

6. TRS

7. Cnt

0. Rst

Frame is displayed

TEST mode menu

Check for display
Check for display

EXE

8

EXE

9

Red dots are displayed

Green dots are displayed

— 12 —

Check for display
Check for display

STEP

Four colors are displayed

Blue

No color

Orange

Green

LX392 TEST MODE

1. LCD

2. KEY

3. RAM

4. ROM

5. DET

6. TRS

7. Cnt

0. Rst

LX392 TEST MODE

1. LCD

2. KEY

3. RAM

4. ROM

5. DET

6. TRS

7. Cnt

0. Rst

LX392 TEST MODE

1. LCD

2. KEY

3. RAM

4. ROM

5. DET

6. TRS

7. Cnt

0. Rst

OPERATION

DISPLAY

NOTE

10
11
12
13

14

15

EXE

EXE

EXE

EXE

EXE

EXE

Blue dots are displayed
Checkers are displayed

Reverse checkers are displayed

Four colors are displayed

Blue

No color

Green

Orange

Check for display
Check for display
Check for display
Color check.

If the colors do not
appear accurately,
please take the
adjustment men­tioned in the
section 9.

Color check

TEST mode menu

16
17

18

19

20

21

2

F1

······

4

EXE

3

F2

EXE

Trace

F3

······

Zoom, Plot, Line, ······

Check for keys
Check for keys.

To push the key
sequentially that is
being appeared in
the display.

TEST mode menu

ROMSIZE 4M byte

ROM check

ROM OK

TEST mode menu

RAMSIZE 64K byte

RAM check
RAM OK
RAM2 OK

— 13 —

STEP

OPERATION

DISPLAY

NOTE

22

EXE

LX392 TEST MODE

1. LCD

2. KEY

3. RAM

4. ROM

23

0

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽
✽✽

RESET

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽

RESET

ALL MEMORIES?

RESET ALLYES NO

24

F1

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽
✽
✽

RESET

ALL MEMORIES !

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽

SHIFT

25

AC/ON

(OFF)

9.COLOR ADJUSTMENT ON OPERATION CHECK

TEST mode menu

5. DET

6. TRS

7. Cnt

0. Rst

Reset

✽

✽

End

STEP

1

2

3

4
5

OPERATION

Use thin and pointed object to
press the RESET button on the
back of the unit.

F1

SHIFT

AC/ON

F6

ab/c

Press

AC/ON

keys at

same time.

DISPLAY

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽
✽✽

RESET

NOTE

Reset

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽

RESET

ALL MEMORIES?

RESET ALLYES NO

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽
✽
✽

RESET

ALL MEMORIES !

✽
✽

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽

RUN / COMP
G-type
Angle
Display
M-D/Cpy

: REC/CON
: Deg
: Nrm1
: M-Disp

ZM PLT LIN CLS

(OFF)

LX392 TEST MODE

1. LCD

2. KEY

3. RAM

4. ROM

5. DET

6. TRS

7. Cnt

0. Rst

TEST mode menu

— 14 —

STEP

+–

ORANGE

BLUE

GREEN

CONTRAST

COLOR

IN.AINIT

O B G

+–

CONTRAST

COLOR

IN.AINIT

O B G

LX392 TEST MODE

1. LCD

2. KEY

3. RAM

4. ROM

5. DET

6. TRS

7. Cnt

0. Rst

OPERATION

DISPLAY

NOTE

6

7

COLOR

ORANGE

O B G

Color adjustment
mode

BLUE

GREEN

+–
CONTRAST
IN.AINIT

7

Aim at the
CONTRAST

8

or

Adjust the color
until the primary
colors appear
accurately.

9

10

EXIT

Take the steps as same as the
end of OPERATION CHECK to
end this adjustment.

TEST mode menu

End

— 15 —

10. DATA TRANSFER CHECK

F6

AC/ON

Turn off both units and connect them by using the cable SB-60.

STEP

1

2

3

4
5

6

MASTER

OPERATION DISPLAY

F6

ab/c

Press

AC/ON

LX392 TEST MODE
keys at same
time.

1. LCD 5. DET

2. KEY 6. TRS

3. RAM 7. Cnt

4. ROM 0. Rst

6

TRANSMIT Check

1. COM Check

2.

Random Data Out

1

0. Self

1. Send

2. Receive

1

SENDING

COM END

EXE

0. Self

1. Send

2. Receive

OPERATION

Press

ab/c

keys at same
time.

6

1

2

EXE

SLAVE

DISPLAY

LX392 TEST MODE

1. LCD 5. DET

2. KEY 6. TRS

3. RAM 7. Cnt

4. ROM 0. Rst
TRANSMIT Check

1. COM Check

2.

Random Data Out

0. Self

1. Send

2. Receive
WAITING
WAITING

COM OK

0. Self

1. Send

2. Receive

NOTE

TEST mode
menu

Check for
sending

2

7
8

EXE

9

10

11

AC/ON

Take the steps as
same as the end
of OPERATION
CHECK to end
this check.

WAITING
WAITING

COM OK

0. Self

1. Send

2. Receive

LX392 TEST MODE

1. LCD 5. DET

2. KEY 6. TRS

3. RAM 7. Cnt

4. ROM 0. Rst

1

EXE

Take the steps as
same as the end
of OPERATION
CHECK to end
this check.

SENDING
COM END

0. Self

1. Send

2. Receive

LX392 TEST MODE

1. LCD 5. DET

2. KEY 6. TRS

3. RAM 7. Cnt

4. ROM 0. Rst

Check for
receptivity

TEST mode
menu

End

— 16 —

11. DATA COMMUNICATIONS

• Though you can transfer programs between the CFX-9800G and another CFX-9800G, an fx­7700GB, an fx-7700GE an fx-7700GH, an fx-9700GE, an fx-9700GH, an OH-7700GE, an OH­9700GE or an fx-8700GB, all of the examples in this manual cover data transfer with another
CFX-9800G only.

11-1. Connecting Two CFX-9800G Units

The following procedure describes how to connect two Power Graphic units with an optional SB-62
connecting cable for transfer of programs between them.

To Connect Two CFX-9800G Units

1. Check to make sure that the power of both CFX-9800G units is off.

2. Remove the covers from the connectors of the two Power Graphic units.

• Be sure you keep the connector covers in a safe place so you can replace them after you
finish your program communications.

3. Connect the two units using the SB-62 cable.

SB-62 cable

Important

• Keep the connectors of the CFX-9800G covered when you are not using them.

11-2. Before Starting Data Communications

Before actually starting data communications, you should first enter the LINK Mode from the Main
Menu.

To Enter the LINK Mode

Highlight the LINK icon on the Main Menu.

Press

The following are the operations that can be selected from the function menu at the bottom of the
display. Press the function key below the operation you want to perform.

EXE

to display the LINK Mode.

EXE

F1

(TRN) .............Transmit

F2

(RCV) .............Receive

F6

(SET) ............. Set up display

COMMUNICATION
PARITY : EVEN
BPS
M–D/Cpy

TRN

: 9600

: M–Disp

RCV SET

F1 F2 F6

— 17 —

About the Data Type Selection Screen

F2

Whenever you press F1 (TRN) to send data or F2 (RCV) to receive data, a data type selection
screen appears on the display.

Send Unit Receive Unit

F1

(TRN)

(RCV)

TRANSMIT DATA

ALL
Program
Editor
Function Memory
Matrix
Statistics
Variable Memory

RECEIVE DATA

ALL
Program
Editor
Function Memory
Matrix
Statistics
Variable Memory

Pointer Indicates more below

The following table describes what each of these items means. You will learn later how to make a
selection using these screens.

Selection Meaning

ALL All data from Program to Equation
Program Program data
Editor File names and file data
Function Memory Function memory contents
Matrix Matrix memory contents
Statistics Single-variable and paired-variable statistical data
Variable Memory Value memory and extended memory contents
Range Graph range parameters
Factor Factor function zoom ratios
Table Table & Graph function data
Graph Function Graph functions, graph draw/non-draw specifica-

tion, graph color specification.
Dynamic Graph Dynamic Graph function data
Equation Equation coefficients
Back Up All memory contents, including mode settings

Note

• If the selections you make on the send unit and receive unit do not match, a TRANSMIT ERROR
will be generated on the sender and a RECEIVE ERROR will be generated on the receiver.

11-3. Setting Communications Parameters

Before you can perform data communications, you must first set up certain hardware parameters to
make sure that the two units are able to understand each other. The parameters of the sender and
the receiver must be identical for them to be able to communicate correctly. There are two hardware
parameters that you can set.

Parameter Settings

EVEN

PARITY ODD

NONE

1200

Speed (BPS)

— 18 —

2400
4800
9600

To Set CFX-9800G Parameters

12

F1 F2 F3

BPS : 9600

24 48 96

<×100>

F4

EVN ODD NON

PARITY : EVEN

BPS

: 9600

M–D/Cpy

: M–Disp

F1 F2 F3

RECEIVE DATA

ALL
Program
Editor
Function Memory
Matrix
Statistics
Variable Memory

= = RECEIVE = =
ALL DATA

YES

NO

F1 F6

F2

Starting from the LINK Mode:

SHIFT

F6

(SET) (or

SET UP

)

• This display shows the currently set parameters.

Press the function key that corresponds to the parity you want to set.
Press to select BPS.

Press the function key that corresponds to the communication speed you want to set.
Press

EXIT

to complete the procedure and return to the previous function menu.

11-4. Using ALL, Range, and Factor

The following procedures show how to send data using ALL, Range, and Factor from one CFX­9800G unit to another. The example procedure shows an operation using ALL only, but the proce­dures for Range and Factor are identical.

• To send data using ALL

Send Unit

Starting from the LINK Mode, press the function
key to enter the send mode.

F1

(TRN)

TRANSMIT DATA

ALL
Program
Editor
Function Memory
Matrix
Statistics
Variable Memory

Make sure that the pointer is located at ALL, and

EXE

press

EXE

to specify it as the data type.

= = TRANSMIT = =
ALL DATA

Starting from the LINK Mode, press the function key
to enter the receive mode.

(RCV)

Make sure that the pointer is located at ALL, and

EXE

press

EXE

to specify it as the data type.

Receive Unit

Press F1 (YES) to start the send operation, or
(NO) to abort without sending anything.

YES

F1 F6

NO

F6

Press F1 (YES) to start the receive operation, or
(NO) to abort without receiving anything.

— 19 —

F6

F1

COMMUNICATION
COMPLETE
ALL DATA

PRESS [ AC ]

= = RECEIVING = =

ALL DATA

TO STOP : [ AC ]

(YES)

= = TRANSMITTING = =

ALL DATA

TO STOP : [ AC ]

F1

(YES)

* Pressing AC interrupts the send operation and

returns to the LINK Mode.

The following appears after the send operation is
complete.

COMMUNICATION
COMPLETE
ALL DATA

PRESS [ AC ]

* Pressing AC interrupts the receive operation and

returns to the LINK Mode.

The following appears after the receive operation is
complete.

* Press AC to return to the LINK Mode.

Warning!

Transferring data using ALL causes data in the applicable memory areas of the receiving unit to be
replaced by the received data. Make sure that you do not need the data stored in the receiving unit
before you start an operation using ALL.

11-5. Data Communications Precautions

Note the following precautions whenever you perform data communications.

• A TRANSMIT ERROR occurs whenever you try to send data to a receiving unit that is not yet
standing by to receive data. When this happens, press AC to clear the error and try again, after
setting up the receiving unit to receive data.

• A RECEIVING ERROR occurs whenever the receiving unit does not receive any data approxi­mately six minutes after it is set up to receive data. When this happens, press AC to clear the
error.

• A TRANSMIT ERROR or RECEIVE ERROR occurs during data communications if the cable
becomes disconnected, if the parameters of the two units do not match, or if any other communi­cations problem occurs. When this happens, press AC to clear the error and correct the problem
before trying data communications again. In this case, any data received before the problem
occurred is cleared from the receiving unit's memory.

• A MEMORY FULL operation occurs if the receiving unit memory becomes full during data com­munications. When this happens, press AC to clear the error and delete unneeded data from the
receiving unit to make room for the new data, and then try again.

— 20 —

12. PIN FUNCTION

12-1. CPU (HD62119A02)

Pin No. Pin Name Input / Output Function

1,3~12 KO1~KO10,KO12 O Key common signal

14~20 KI1~KI7 I Key input signal

2 2 IT2 I Interrupt input
23 IT0 GND

24~42 AO0~AO18 O Address bus

43 OEBO O Enable signal

4 4 WEBO O Enable signal to write
48~51 CS4BO~CS7BO O Chip selecting signal
52~59 IO0~IO7 I Data bus

62,63 OPT0,OPT1 O Output point for check

64~71 PORT0~PORT7 I/O Input/output point

72 VSS GND

73,74 PI,PO Power for ceramic oscillator

7 5 VLC Power

76,77 XO,XI Power

78 VCC Power for LSI

79 VREG2 Power

80,81 TS1,TS2 I Terminal for test

82 VSSR GND

85 VSS GND

86 OCLK O Clock

87 ITOFF I/O Terminal for power switch

89 SW I Reset switch

9 0 VDB Power
91~94 VD1~VD4 Power for doubler

95 VREG1 Regulator power for LSI

96 VREG4 Regulator power for ROM

97 VREG5 Regulator power

98,99 VDT1I,VDT2I I Terminal for detector

100 VREG3 Regulator power for RAM

— 21 —

12-2. ROM (MB834000CPF-G-4EP)

Pin No. Pin Name Input / Output Function

1 NC I Power supply

2~12,23,25~31, A0~A18 I Address input

13~15,17~21 D0~D7 O Data output

16 VSS I Ground
22 CE I Chip enable input from CPU
24 OE I Output enable input from CPU
32 VCC I Power supply

12-3. RAM (256SRAM/3V)

Pin No. Pin Name Input / Output Function

1~10,21,23~26, A0~A14 I Address input

11~13,15~19 IO1~IO8 I/O Data input/output

1 4 GND I Ground
20 CS I Chip select signal
22 OE I Output enable input from CPU
27 WE I Write enable input
28 VCC I Power supply

— 22 —

13. TROUBLESHOOTING

SYMPTOM CAUSE SOLUTION

Intermittent display

No display at all

Erratic display

Dirt or poor contact on battery

Poor contact on power switch

Poor connection on PC joiner

Poor soldering on LSI, capacitor, or resistor

Weak battery

Dirt or poor contact on battery

Poor contact on power switch

Poor connection on PC joiner

Defective LSI, capacitor, or resistor

Poor contact between LCD and PCB

Poor soldering on LSI

Clean or adjust pressure of
contact

Clean or replace power
switch

Resolder or replace

Resolder

Replace battery

Clean or adjust pressure of
contact

Clean or replace power
switch

Resolder or replace

Replace

Replace the heat seal

Resolder or replace display
PCB ass'y

Certain key does not
function

All keys do not function

Heavy key motion

Dirt on key contact

Heavy key motion

Poor soldering on LSI

Defective LSI, capacitor, or resistor

Constant contact is made on a certain key

Defective LSI, capacitor, or resistor

Dirt or scratch on the key

Clean or replace contact

Clean or replace the key

Resolder

Replace

Separate the contact

Replace

Clean or replace the key

— 23 —

14. DISASSEMBLY AND EXPLODED VIEW

1. Loosen both J and M screws on the battery covers K and L after removing the hard case l
from the body, and remove the battery covers and batteries.

2. Loosen the four screws N on the lower case E, and remove this lower case from the body.

3. Remove one end of the PC joiner D from the L392-1 assembly 1 with the help of fusing its
weld.

4. Loosen the two screws j on the L392-1 assembly 1 and the four screws j on the LCD holder
3, then remove the L392-1 assembly 1 from the upper case U.

5. Loosen the six screws j on the L392-2 assembly, and remove the L392-2 assembly from the
upper case U.

— 24 —

53

51

5

33

7

31

45

43

44

52

32

36

42

41

35

34

32

12

50

8

40

50

47

50

4

2

37

13

27

26

25

19

29

27

28

16

17

30

14

5

15

28

10

46

48

38

49

39

11

50

— 25 —

18

54 55

6

3

56 57

24

22

21

23

20

Obverse side Reverse side

1

10 11

9

5

7

6

2

3

4

5

8

14

13

Fig. 1. L392-1 assembly and L392-2 assembly.

12

C33
C34

J1

— 27 —

15. PARTS LIST

FOB Japan

N Item Code No. Parts Name Specification Q M N.R.Yen R

Unit Price

L392-1 ASS'Y

N 1 6413 4940 PCB L392-1 Ass'y A140050*1

(This assembly contains the following available elements.)

1A

1

N LSI1 2012 0546 LSI HD62119A02
N LSI3 2012 0406 LSI MB834000CPF-G-4EP

LSI4 2011 3955 LSI UPD43256BGU-B12

IC1 2105 3213 C-MOS IC BU4066BCF-T1
N IC3 2105 4235 C-MOS IC XC62AP2502PR
N IC4 2105 2737 C-MOS IC RH5RL50AA-T1

X1 2590 1967

C1~4,C9, 2845 1925 Chip capacitor MCH312F105ZP

C19~25,C38

C5,C8,C12, 2845 2548 Chip capacitor MCH183F104ZK

C13,C32

C6,C7 2895 1365 Chip capacitor MCH325F474ZP

C18 2895 2359 Chip tantalum capacitor ECSTOJX336R

C26~31 2845 5684 Chip capacitor MCH212C154KP

D6 2390 1260 Chip diode MA152A-(TX)
R1 2791 1595 Chip resistor ERJ-6GEYJ153V
R2 2795 5649 Chip resistor MCR10EZHG185

R3 2797 0252 Chip resistor ERJ-6GEYJ823V
N R16 2797 4214 Chip resistor ERJ-6ENF1001V
N R17 2797 4221 Chip resistor ERJ-6ENF2001V
N R18 2797 4228 Chip resistor ERJ-6ENF4021V
N R19 2797 4235 Chip resistor ERJ-6ENF8061V
N R20 2797 4403 Chip resistor ERJ-6ENF9312V

R21 2797 4032 Chip resistor ERJ-6ENF1502V
N R22 2797 4256 Chip resistor ERJ-6ENF9762V
N R23 7102 6064 Chip resistor ERJ-6ENF1003V

R28 2797 0616 Chip resistor ERJ-6GEYG105V
N THR1 2755 0147 Thermistor 104HT
N 2 3335 5558 LCD CD1013-TS
N 3 6413 5160 LCD holder L392 A340165-1
N 4 6413 5200 Tape B-L392 A440299-1

5 6403 9330 Tape C-L170 A413108-1
N 6 5610 8300 Heat seal B-L392 A340116-1
N 7 6413 5210
N 8 6413 5180 Cushion A-L392 A440250-1
N 9 6413 5320 COF3011-F1 sub ass'y A340214*1
N 10 5610 8290 Heat seal A-L392 A340113-1
N 11 6413 5171 Adhesive tape B-L392 A440249A-1

L392-2 ASS'Y

N 12 6413 4960 PCB L392-2 Ass'y A240063A*1

(This assembly contains the following available elements.)

Ceramic oscillator

Cushion B-L392

CSTC4.30MG-TC

A440322-1 1 20 X

1C

1

1C

1

1C

1

10 C

1

5C

1

10 C

1

5C

1

10 C

13

20 C

5

10 C

2

10 C

1

20 C

6

20 C

1

20 C

1

20 C

1

20 C

1

20 C

1

20 C

1

20 C

1

20 C

1

20 C

1

20 C

1

20 C

1

20 C

1

20 C

1

5C

1

1A

1

20 C

1

20 X

1

20 X

2

1A

1

20 X

1

1C

1

10 A

1

20 C

2

1A

1

N 13 6413 5220 Tape C-L392 A440302-1
N C33,C34 2803 7800 Electriolytic capasitor RE3-10V101M-T58

C35,C36 2845 2548 Chip capasitor MCH183F104ZK

C37 2845 2898 Chip capasitor MCH185A101JK

D4,D5 2390 0364 Schottky diode MA713-TX

N IC6 2105 4242 CMOS IC XC61AC2602PR

Notes: N – New parts R – A : Essential

M – Minimum order/supply quantity B : Stock recommended

R – Rank C : Others
Q – Quantity used per unit X : No stock recommended

— 28 —

20 X

1

20 C

2

20 C

2

20 C

1

10 C

2

10 C

1

FOB Japan

N Item Code No. Parts Name Specification Q M N.R.Yen R

Unit Price

N IC7 2105 4074 CMOS IC S-80724AL-AM-T1

J1 3501 6538 Miniature jack HSJ1169-012010

Q6 2259 0959 Chip digital transistor DTC114YKT-146
R25 2792 1191 Chip resistor MCR10EZHJ182
R26 2792 0462 Chip resistor MCR10EZHJ473
R27 2792 0470 Chip resistor MCR10EZHJ102

N R31 2795 5663 Chip resistor MCR10EZHJ475

COMPONENTS

N14
N 15 6413 5300 Lower case L392 A140048-1
N 16 6274 7023 Contact spring A4532C-1
N 17 6413 5310 Switch knob L392 A340089-1
N 18 6411 6700 Battery spring B-L196 A415028-1

19 6398 8940 Battery spring L383 A311808-1

N 20 6413 5110 Flat screw L392 A440276-1
N 21 6413 5050 Battery cover A-L392 A340108-1
N 22 6413 5060 Battery cover B-L392 A340117-1
N 23 6413 6020 Screw B-L392 A412299-10

24 6386 9510 Screw A-V426 A310044-3

25 6329 7660 Battery insuration plate G272 A45154-1

26 6329 7620 Battery spring A-G272 A33938-1

27 6323 1011 Insuration seal G106 A43065-1

N 28 6408 1120 Nut L598AA A411430-4
N 29 6391 8831 Rubber key V160 A311024A-1

30 6405 6440 Blind al171 A413625-1

N 31 6413 5240 Upper case L392 A140035-1
N 32 6413 5280 Adhesive tape D-L392 A440185-3
N 33 6413 5250 Protector L392 A340119-1
N 34 6413 5260 Adhesive tape A-L392 A440185-1
N 35 6413 5290 Display plate L392 A340112-1
N 36 6413 5270 Adhesive tape C-L392 A440185-2

37 6386 7450 Battery spring A-V355 A410112-1

N 38 6413 5000 Button B-L392 A340110-1
N 39 6413 5020 Button D-L392 A340123-1

40 6403 8700 Battery spring C-L180 A412985-1

N 41 6413 5100 Button G-L392 A313257-5
N 42 6413 5010 Button C-L392 A340111-1

43 6408 0080 Button F-L370 A313257-2

44 6408 0070 Button E-L370 A313257-1

N 45 6413 5070 Button B-L392 A211316-4
N 46 6413 4990 Button A-L392 A240072-1

47 6390 0430 Cap V332 A310765-1

N 48 6413 6000 Button H-L392 A340256-1
N 49 6413 5030 Key contact rubber L392 A240061-1

50 6396 7660 Screw A-L564 A310044-13

N 51 6413 5130 Plate L392 A340243-1
N 52 6413 5040 Hard case L392 A240058-1

53 6405 8831 Rubber strip L373 A412232A-2

N 54 6414 0050 FCC Label L392 A440395-1
N 55 6414 4660 EMI Label L392AAC A440566-1
N 56 6413 5120 Label L392 A440354-1
N 57 6414 3730 Label L392AAQ A440354-3

Notes: N – New parts R – A : Essential

6413 6010

OTHERS

M – Minimum order/supply quantity B : Stock recommended

R – Rank C : Others
Q – Quantity used per unit X : No stock recommended

PC joiner L392 A413642-5

— 29 —

10 C

1

5C

1

20 C

1

20 C

1

20 C

1

20 C

1

20 C

1

5C

1

5C

1

20 C

1

20 C

1

10 C

1

20 C

1

20 C

1

20 C

1

20 C

1

20 C

1

20 C

4

20 C

1

20 C

1

20 C

2

20 C

2

20 C

1

20 C

1

1C

1

20 C

2

5C

1

20 C

1

10 C

1

20 C

1

20 C

1

20 C

1

20 C

1

20 C

1

20 C

1

10 C

1

20 C

1

20 C

1

10 C

1

10 C

1

20 B

1

20 C

1

5C

1

20 C

12

1C

1

1C

1

20 C

1

20 X

1

20 X

1

20 X

1

20 X

1

8-11-10, Nishi-Shinjuku
Shinjuku-ku, Tokyo 160, Japan
Telephone: [phone]