Casio DC-7800RS Service Manual & Parts List Download | Manualshive

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DC-7800RS

(ZX-725)

DC-8500RS

(ZX-726)

JAN. 1997

R

(without price)

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3
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Summary of Contents for DC-7800RS

Page 1: ...DC 7800RS ZX 725 DC 8500RS ZX 726 JAN 1997 R without price ...

Page 2: ...CONTENTS SPECIFICATIONS 1 OPERATION CHECK 2 DATA TRANSFER 3 TROUBLESHOOTING 4 SCHEMATIC DIAGRAMS 5 PARTS LIST 7 EXPLODED VIEW 8 ...

Page 3: ...x 20 7 µA Typ 10 5 µA While Power OFF Max 16 7 µA While buzzing Max 767 µA When backlighting Max 16 500 µA Battery life Approx 1 year one hour operation per day with two backlight opera tions and one daily alarm operation Auto power off Approx 6 minutes after last key operation Ambient temperature range 0 C 40 C 32 F 104 F Dimensions 15 3 H 134 W 92 D mm Folded 5 8 H 5 1 4 W 3 5 8 D 10 9 H 134 W 1...

Page 4: ...own the RE SET button press G then release the RESET button Press for about 1 sec ond Press for about 1 sec ond Press for about 1 sec ond DC 8500RS Press for about 1 sec ond DC 7800RS Press RESET button DISPLAY NOTE The unit emits a buzz RESET button is located on the back of the unit If the unit is faulty LCD indicates NG instead of OK DC 7800RS DC 8500RS ...

Page 5: ... DC 7800RS 8500RS Note Before connecting wires be sure to reset the Back up unit 1 Remove the BATT 2 battery cover 2 Connect 4 terminals on the PCB with wires as shown in the figure below User s unit Back up unit RESET BATT 1 BATT 2 RESET BATT 1 BATT 2 Wiring GND GND SCLK_ SCLK_ SIN SIN SOUT SOUT ...

Page 6: ...ET button 0Press Note Never press as it deletes all the data BPress OFF TROUBLESHOOTING Before doing the following solutions save data if possible SYMPTOM SOLUTION CAUSE No power Weak battery Replace batteries Resolder Poor soldering of the power supply circuit No display at all or wrong display Defective heat seal Replace the heat seal Defective LCD Replace the LCD Display R Unit emits a buzz R U...

Page 7: ... 5 SCHEMATIC DIAGRAMS Main block ...

Page 8: ... 6 Key block ...

Page 9: ...I COMPONENT 4 6418 1080 EL PANEL Z723 A341294 1 Common 1 B N 5 6419 8180 BATT COVER FADOL961051 Common 2 C 6 6419 1820 PUSH BUTTON FB3DB371004 Common 1 X N 7 6419 8150 UPPER CABINET FAADB391001 DC 7800RS 1 X N 7 6419 8160 UPPER CABINET FAADB391010 DC 8500RS 1 X N 8 6419 8170 RUBBER SHEET LADB3910005 Common 1 X N 9 6419 8210 SPONGE FH100040601 Common 1 C N 10 6419 8220 HARD CASE FC1DB371042 DC 7800...

Page 10: ... 8 10 11 7 8 3 5 13 6 14 15 12 9 4 1 2 EXPLODED VIEW ...

Page 11: ...MA0300171A ...

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