Casio DR-1212LA Service Manual & Parts Catalogue Download | Manualshive

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7. SCHEMATIC DIAGRAM

7-1. Main PCB (ZX-516)

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Summary of Contents for DR-1212LA

Page 1: ...R PR 420A ZX 516C DR 1212LA ZX 516D DEC 1995 without price INDEX ...

Page 2: ...CONTENTS 1 SPECIFICATIONS 1 2 BLOCK DIAGRAM 1 3 CPU MN158418YCY PIN FUNCTION 2 4 DIAGNOSTICS 3 5 TROUBLESHOOTING 5 6 DISASSEMBLY VIEW 6 7 SCHEMATIC DIAGRAMS 9 8 PARTS LIST 12 ...

Page 3: ...nal Timing pulse Digital signal D1 D13 Motor control signal VDD VSS Sent signal Sa Sg SAP SDP SO1 SO7 SI1 SI3 SI5 KO1 KO8 KI1 KI5 VIM VDD 1 SPECIFICATIONS Roll paper size Width 57 58 mm Ink ribbon Red Black RB 02 Green Black GB 02 Power source AC 100 120 220 or 240 10 V 50 60 Hz Refer to the operation manual for other specifications 2 BLOCK DIAGRAM ...

Page 4: ...tive signal for printer P70 P73 P80 P82 31 32 P83 P90 Out Segment signal for display Character selective signal for printer 33 39 P91 P93 Out Common signal for slide switch PA0 PA3 Segment signal for display 40 P60 In Input port VDD 41 43 P61 P63 In Signal from slide switch 44 56 PB0 PB3 Out Digit signal for display PC0 PC3 PD0 PD3 PE0 57 VPP In GND terminal 58 VDD In VDD terminal 33 V 59 60 OSC1 ...

Page 5: ...5 4 1 ON 5 4 0 ON 5 4 ADD ON 5 4 ADD PRINT 5 4 ADD 1 TM 00 C 8 0 9 CA 5 4 3 2 1 6 7 M M M 5 MU MD M M CA 1 1 M M M M M M M K 0 123 0 01 0 123 0 0 1 0 12 0 124 0 1234 0 123456 0 1234567 0 888 88888888 888 888888888 0 1000 8 8 8 8 8 8 8 8 8 8 4 DIAGNOSTICS PW F D OPERATION DISPLAY PRINT OUT ...

Page 6: ...4 ADD ITEM 5 4 ADD ITEM 5 4 ADD ITEM 5 4 ADD ITEM 5 4 ADD OFF F 6 0 03 0 03 0 02 0 02 0 02 001 No Display 1 1 IT G 0 1 1 0 0 1 1 0 0 1 0 0 1 1 0 01 0 0 2 0 0 1 0 0 2 0 0 2 0 0 1 0 0 1 0 0 1 0 0 1 0 0 3 0 0 3 G PW F D OPERATION DISPLAY PRINT OUT ...

Page 7: ... 4 5 F6 ab c AC 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 ALL YES NO RESET ALL MEMORIES ...

Page 8: ... are OK VM 17V while printing Check detector of printer block and timing signal Secondary voltage of transformer Waveforms of each pin VF1 VF2 Signal D1 S1 Between LSI and display tube 5 TROUBLESHOOTING Defective power transformer Defective LSI No voltage at VF1 VF2 No digit signal or no segment signal Defective display tube Poor voltage VM Defective motor Defective LSI Short or open circuits betw...

Page 9: ... 6 12 3 13 3 20 2 18 4 10 9 7 8 6 19 5 21 1 17 15 14 16 11 6 DISASSEMBLY VIEW ...

Page 10: ...PUT INPUT Power Cord Projection side Black Projection side Marking side Brown Blue Brown Blue Transformer Yellow Black Blue Black Black White Black Red Connection Voltage 100V 120V 220V 240V 22 23 25 24 2 26 ...

Page 11: ... 8 4 2 3 ...

Page 12: ... 9 7 SCHEMATIC DIAGRAM 7 1 Main PCB ZX 516 ...

Page 13: ... 10 7 2 Key Matrix ...

Page 14: ... T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 8 0 7ms max 0 7ms max 80 0ms min 0 7ms max 0 7ms max 8 0ms min 2 0ms min TS T 0 0 2ms max Typ 285 7ms 2 1 7 3 Printer Pin Arrangement Diagram Notes 1 Column numbers match the physical arrange ment of the columns on the print wheels 2 Column numbers are as signed from 1 to 18 from the frame motor side 3 Pin numbers are as signed from 1 to 27 from the frame motor si...

Page 15: ... 12 8 PARTS LIST ...

Page 16: ... 13 ...

Page 17: ...8 11 10 Nishi Shinjuku Shinjuku ku Tokyo 160 Japan Telephone 03 3347 4926 ...

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