Casio FX-7700GE User manual

fx-7700GE(LX-375)
MAR. 1994
R
(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
1
2
3
SHIFT AC
4
5
F6 ab/cAC
Press the above keys at the
same time.
1
6
No Display
== Lx375 TEST ==
1. LCD 4. ROM
2. KEY 5. TRS
3. RAM 0. rst
F1
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
7
8
EXE
EXE
9
10
11
12
Reverse checker display
Checker Display
EXE
EXE
EXE
2
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
13
14
15
17
4
ZOOM Press the key
sequentially
appeared on the
display.
➔
➔
➔
➔
<
EXE
3
== Lx375 TEST ==
1. LCD 4. ROM
2. KEY 5. TRS
3. RAM 0. rst
...
16
<< 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
18
EXE
00A6C77D
–
A few seconds
after.
== Lx375 TEST ==
1. LCD 4. ROM
2. KEY 5. TRS
3. RAM 0. rst
19
5
1
20
–
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