Casio DC-7500A Service Manual & Parts List Download | Manualshive

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B2+

IC1

IC2

IC3

C5

R3

R2

BZ2

D2

D1

BZ1

IC4

D3

R1

C3

C2

C1

XT

LSI

B1+

PCB VIEW

TROUBLESHOOTING

Before the following solutions will be done, save data if possible.

SYMPTOM

SOLUTION

CAUSE

No power

Battery shortage

Replace batteries

Resolder

Poor soldering of the power
supply circuit

No display at all or wrong display

Defective heat seal

Replace it

Defective LCD

Replace it

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Summary of Contents for DC-7500A

Page 1: ...DC 7500A JUL 1994 R without price DC 7500A INDEX ...

Page 2: ...y 2 years 1hour use per day Back up battery approximately 1 year after the LOW BATTERY message appears on the display Auto power off Approximately 6 minutes after last key operation Ambient temperature range 0 C 40 C 32 F 104 F Dimensions 11 9 H 119 W 77 5 D mm Folded 1 2 H 4 5 8 W 3 D 8 3 H 119 W 151 D mm Unfolded 3 8 H 4 5 8 W 6 D Weight 84 2 g 3 oz including batteries ...

Page 3: ...o MODE DISPLAY KEY NOTE CLEAR SCHEDULE B V AC CONVERSION M N EDIT HOME WORLD ASDFGHJKL CONVERSION SCHEDULE A SCHEDULE A QWERTYUIOP_ A Hold down it for about two seconds HKG EDIT 1994 01 01 PM 11 XX XX SAT 1994 01 01 AM 12 XX XX TYO EDIT 1994 01 01 AM 12 XX XX g NAME A 0 0 0 0 0 Q W E R Y T U P O I A S D F H G J L K Z C X ALPHA ...

Page 4: ... ANNIVERSARY TYO EDIT 1994 01 01 AM 12 XX XX ON NAME A Confirm buzzer PASS WORD A SPACE HOME WORLD Three times ALARM 12 00 SPACE Four times KEYe OFF SET KEYe ON See the figure below Back up battery cover Main battery cover RESET button RESET RESET NAME A SET CAPA U 0 A F 500 f e ...

Page 5: ...e machine Customer s machine Operation Display Operation Display RESET R T END 1 Press RESET button 2 Short the pad TR 3 Press SET key 5 1 Press RESET button 2 Short the pad TR 3 Press CAPA key 4 Press SET key 5 RESET R END If the display shows NG execute the operation from 2 It takes around 15 minutes to transfer the data in case of memory full VDD VDD IO11 IO11 IO12 IO12 IO13 IO13 IO12 VDD TR pa...

Page 6: ...LESHOOTING Before the following solutions will be done save data if possible SYMPTOM SOLUTION CAUSE No power Battery shortage Replace batteries Resolder Poor soldering of the power supply circuit No display at all or wrong display Defective heat seal Replace it Defective LCD Replace it ...

Page 7: ...S5 S6 S7 S8 S9 S10 S11 S12 S13 IC3 C4 LCD CA411 TS LSI JTMP0340 1902S PI IC1 IC2 TC7S02F IC3 TC7S04F IC4 RH5VL27CA S 8072AL AG R1 62K 1 8W 2 R2 R3 100 1 8W C1 18PF 50V C2 15PF 50V C3 C5 0 1uF 25V C4 10uF 4V D1 D2 MA151K D3 MA704 BT1 BT2 CR2025 XT 32 768KHz BZ EFB S55C41A8 LSI IO12 IO13 IO14 IO21 IO22 IO23 IO24 IO31 IO32 IO33 IO34 IN11 IN12 IN13 IN14 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 IO0 O52 O51 AC XO...

Page 8: ... Buzzer EFB S55C41A8 1 10 X 6 6510 4500 Buzzer tape HGFC0000501 1 20 X N 7 6413 2660 Push Button FB30L961001 1 10 X N 8 6413 2750 Rating label HGC00L96102 1 10 X 9 6510 5250 Screw MAB80004209 3 20 X 10 6408 5830 Rubber button LADB0140101 1 20 X N 11 6413 2770 Hard case FC10L961007 1 1 X N 12 6413 2780 Operation label HGFC0010400 1 10 X N 13 6413 2670 Display plate EL5F0009100 1 1 X N 14 6413 2700 ...

Page 9: ... 8 EXPLODED VIEW 9 12 14 15 13 11 10 8 5 6 4 3 1 2 16 17 18 19 20 21 22 23 24 25 18 7 ...

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

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