Casio FX-7700GE User manual

fx-7700GE(LX-375)

MAR. 1994

(without price)

INDEX

CONTENTS

1. SCHEMATIC DIAGRAM

1-1. MAIN BOARD I........................................................................................... 1

1-2. MAIN BOARD II...........................................................................................2

1-3. MAIN BOARD III..........................................................................................3

2. SPECIFICATIONS............................................................................................. 4

3. OPERATION CHECK .........................................................................................5

4. DATA COMMUNICATIONS

4-1. CONNECTING TWO fx-7700GE UNITS ...................................................10

4-2. BEFORE STARTING DATA COMMUNICATIONS...................................11

4-3. SETTING COMMUNICATIONS PARAMETERS ......................................12

4-4. USING ALL TO SEND ALL DATA............................................................13

4-5. USING PROGRAM TO SEND PROGRAM DATA ....................................15

4-6. DATA COMMUNICATIONS PRECAUTIONS...........................................16

5. TROUBLESHOOTING......................................................................................17

6. DISASSEMBLY VIEW......................................................................................18

7. PARTS LIST .................................................................................................... 22

— 1—

1. SCHEMATIC DIAGRAMS

1-1. MAIN BOARD I

— 2—

1-2. MAIN BOARD II

— 3 —

1-3. MAIN BOARD III

— 4 —

CURRENT CONSUMPTION

TYP [µA] MAX [µA]

ON 2673 5147

OFF 15

2. SPECIFICATIONS

Display system: 16-character x 8-line liquid crystal display; 10-digit mantissa and 2-digit expo-

nent for calculations; displays binary, octal, hexadecimal, sexagesimal values,

fraction

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

Memory protection: One CR2032 lithium battery

Power consumption: 0.1W

Battery life: Main: Approximately 350 hours (continuous display of 0) on battery type LR03

(AM4)

Approximately 200 hours (continuous display of 0) on battery type R03

(UM-4)

Approximately 2 years (power switch off) on LR03 (AM4)/R03 (UM-4)

Memory protection: Approximately 1 year

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

tion.

Ambient

temperature range: 0°C ~ 40°C (32°F ~ 104°F)

Dimensions: 20mmH x 85mmW x 172.5mmD (3/4"H x 33/8"W x 63/4"D)

Weight: 218.5g (7.7 oz) including batteries

Accessories: Hard Case

— 5 —

3. OPERATION CHECK

NO. OPERATION DISPLAY NOTE

SHIFT AC

F6 ab/cAC

Press the above keys at the

same time.

No Display

== Lx375 TEST ==

1. LCD 4. ROM

2. KEY 5. TRS

3. RAM 0. rst

RESET

AC MAIN MENU

COMP BASE SD REG

MAT GRAPH EQUA PRGM

LINK CONT RESET

No Display

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽

✽

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽

✽

RESET

RESET ALL MEMORIES?

RESET ALLYES NO

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽

✽

✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽✽

RESET

ALL MEMORIES!

✽

— 6 —

NO. OPERATION DISPLAY NOTE

EXE

Reverse checker display

Checker Display

EXE

All dot display

Frame didsplay

== Lx375 TEST ==

1. LCD 4. ROM

2. KEY 5. TRS

3. RAM 0. rst

Trace

— 7 —

F1 (Trace)F2 (ZOOM)F3 (Plot)

F4 (Line) F5 (cls) F6 (coord)

SHIFT ALPHA EXIT MENU

G↔T Graph Range MDisp

X.Q.T log In Sin Cos Tan

ab/cX2( ) ➩> 8 9

DEL AC 4 5 6 ✕ ÷1 2

3 + – 0 . EXP (-)

NO. OPERATION DISPLAY NOTE

ZOOM Press the key

sequentially

appeared on the

display.

➔

EXE

== Lx375 TEST ==

1. LCD 4. ROM

2. KEY 5. TRS

3. RAM 0. rst

...

<< RAM OK >>

–

== Lx375 TEST ==

1. LCD 4. ROM

2. KEY 5. TRS

3. RAM 0. rst

EXE

A few seconds

after

...

— 8 —

NO. OPERATION DISPLAY NOTE

EXE

00A6C77D

–

A few seconds

after.

== Lx375 TEST ==

1. LCD 4. ROM

2. KEY 5. TRS

3. RAM 0. rst

–

Connect the two Lx-375 by

using SB-62.

TRANSMIT CHECK

1. COM CHECK

2. RANDOM DATA OUT

Transfer side

1. TRANS

2. RECEIVE

Transfer side

(21)

1. TRANS

2. RECEIVE

Receive side

< Set the receive side machine. >

•Operate the in order of

No.1~5.

•Press the 5 key.

LX-375 LX-375

SB-62

LX-375LX-375

receive side

transfer side

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