Casio CE-235, Service Manual

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1
1. FEATURES
The differece between CE-2300 and CE-2350 is as follows;
2. SPECIFICATION
2-1. Electrical specifications
Power consumption :
Specification : 0.35A
In operation Max. 0.22A
Stanby Min. 0.09A
Power OFF 0.08A
Memory protection
Back-up battery : Mangan battery (UM-3 x 3 pcs.)
Back-up period : 1 year (25°C)
Battery life : Replace the battery every year.
Clock & Calendar
Accuracy : Within 120 sec. per month (25°C)
Auto calendar : Effective until 2099 A.D.
2-2. Environmental specifications
Operating temperature : 0°C ~ 40°C
Operating humidity : 10 % ~ 90%
Storage temperature : -25°C ~ 65°C
Storage humidity : 10% ~ 95%
Vibration strength : 1.5G (The machine must be inthe carton box.)
2-3. Principal components
CPU : Name : uPD75516GF-351-3B9
Number of control bit : 4
Internal RAM : 512x 4 bits
Internal ROM : 12160 x 8 bits
Main system clock : 4.19 MHz
Sub system clock : 32.768 Khz
Item C E - 2 3 0 0 C E - 2 3 5 0
Department number 8
19 x 2
(for using DEPT SHFT key)
PLU number 200 400
Clerk number 4 10
Post-finalization receipt printing 24 lines 52 lines
Total/Change indicators Mounted Nil
RAM capacity 8 KBytes 32 KBytes