— 17 —
5. DIAGNOSTIC OPERATION
5-1. To start the diagnostic program
1. Plug the power cord into an AC outlet.
2. Set the mode switch to "OFF" position.
3. While pressing the "Jounal feed " button,
turn the mode switch to "PRG" position.
4. Release the "Journal feed" button.
5. Input "99990000" and press "ST" ("#2" key).
6. Diagnostic program is executed.
5-2. Check item
The following test can be checked in the diagnostic test.
1. Key code test
2. Switch status test
3. Individul function test
5-3. Operation of each test
1. Key code test
When pressing a key, the machine displays
the following key code.
HARD KEY CODE TABLE
Hard key code
DISPLAY
Note: "014" button is work for "#2" key. "013" button is work for "#1" key.
X X X
z
z
Key borad information
11: Stroke Key
10: Flat Key
01: Full Flat Key
089
090
091
092
093
094
095
096
097
098
099
100
RF
JF
077
070
068
066
066
060
054
048
042
036
030
024
018
087
082
076
069
067
065
065
059
053
047
041
035
029
023
017
086
081
075
7
8
9
064
058
052
046
040
034
028
022
015
085
080
074
4
5
6
063
057
051
045
039
033
027
014
016
084
079
073
1
2
3
062
056
050
044
038
032
026
020
021
083
078
072
0
11
12
061
055
049
043
037
031
025
019
013
Summary of Contents for CE-6800
Page 5: ...3 2 BLOCK DIAGRAM 2 1 PCB CONNECTION...
Page 31: ...29 5 HIN211CA T 7 LC7932M TE R 6 HY628100ALLG 70...
Page 33: ...31 9 LM2576HVT 5 0LB03 10 MTA001M F4101...
Page 35: ...33 15 SN74LV00APWR 16 SN74LV02APWR 14 SN74HC27PWR 17 SN74LV08APWR...
Page 36: ...34 18 SN74LV138APWR 19 SN74LV139APWR...
Page 37: ...35 20 SN74LV165APWR...
Page 38: ...36 21 SN74LV165APWR 22 SN74LV174APWR...
Page 39: ...37 23 SN74LV32APWR 24 SN74LV74APWR...
Page 40: ...38 7 PCB LAYOUT MAIN PCB Front side...
Page 41: ...39 MAIN PCB Back side...
Page 43: ...41 CASIO COMPUTER CO LTD CE 6800 EX 475P Model Name SYSTEM BLOCK DIAGRAM Drawing No E140329P...
Page 44: ...42 42...
Page 45: ...43 RAM3 and RAM4 are option For CE6800 the Flash ROM2 is not used...
Page 46: ...44...
Page 47: ...45...
Page 48: ...46...
Page 49: ...47 DRW3 and DRW4 are not used...
Page 50: ...48...
Page 51: ...49...
Page 52: ...50...
Page 53: ...51...
Page 54: ...52...
Page 55: ...53 Voltage selector is not used for CE 6800...
Page 56: ...54...
Page 57: ...55...
Page 72: ...70 13 DRAWER DL 2771...