Related Manuals for Casio DL-270B
Summary of Contents for Casio DL-270B
- Page 1 (without price) DL-270B (ZX-510IY) DR-220TA (ZX-510AY) NOV. 1995 DL-270B DR-220TA INDEX...
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Page 2: Table Of Contents
CONTENTS SPECIFICATIONS ......................1 BLOCK DIAGRAM ......................2 CPU (MN158418YCY) PIN FUNCTION ................. 3 TROUBLESHOOTING ....................4 DIAGNOSTIC......................... 5 SCHEMATIC DIAGRAMS ..................... 6 DISASSEMBLY VIEW ....................8 PARTS LIST ........................9... -
Page 3: Specifications
1. SPECIFICATIONS 4 basic arithmetic operations (+, -, ×, ÷), constants for ×/÷, sub-total/total/ Functions: grand total, item counting, ADD mode calculations, repeat calculations, memory calculations, percentage calculations and various kinds of practical calculations. Decimal point: Full floating, and fixed (0, 1, 2, 3, 4 or 6) with round-off, round-up or cut-off. Capacity: 12 digits Display:... -
Page 4: Block Diagram
2. BLOCK DIAGRAM Display tube VF1, VF2 SC131MH Segment signal Digital signal S1 ~ S7, SAP, SDP D1 ~ D13 SO1 ~ SO7 Slide switch SI1 ~ SI3, SI5 Ribbon shift signal Character selective signal Printer Timing pulse MN158418YCY M-80 KO1 ~ KO8 Motor control signal Keyboard... -
Page 5: Cpu (Mn158418Ycy) Pin Function
3. CPU (MN158418YCY) PIN FUNCTION Signal Function Pin No. P00~P13 Common signal for keyboard 1~7, 64 P20~P22, P32, P33 Key signal from keyboard 8~12 Timing pulse signal from printer DEBIN Not used IRQCNT VDD (33 V, 30 mA) Motor control signal Ribbon shift signal for printer P42, P43, P50~P53 Character selective signal for printer... -
Page 6: Troubleshooting
4. TROUBLESHOOTING Note Trouble Cause Checkpoint VDD, VSS, VM, VF1, and 1) Does not work • Defective power transformer Secondary voltage of VF2 are OK? at all. transformer • Defective LSI Waveforms of each pin 2) No display. • No voltage at VF1, VF2 VF1, VF2 Check the pulse signals •... -
Page 7: Diagnostic
5. DIAGNOSTIC MODE SWITCHES OPERATION DISPLAY PRINT NOTE STEP 100. ÷ ◊/# The character with – -888.888888888 "[ ]" will be printed [88.8888888888] by red ink. -888.88888888 ÷ 1.234 • ÷ PRINT 1234. PRINT 1.61307189542 765 • = 1.61307189542+ PRINT CUT M 1.613071 1.613071 M+ PRINT CUT... -
Page 8: Schematic Diagrams
6. SCHEMATIC DIAGRAMS 6-1. Main Board... - Page 9 6-2. Key Matrix 6-2. Key Matrix...
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Page 10: Disassembly View
7. DISASSEMBLY VIEW Connection Voltage Power Cord Transformer Black Black 100V Projection side Yellow Projection side Blue 120V Marking side Black Brown Black 220V Blue White Brown Black 240V Blue... -
Page 11: Parts List
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- Page 13 8-11-10, Nishi-Shinjuku Shinjuku-ku, Tokyo 160, Japan Telephone: 03-3347-4926...