Casio SF-4300B Service Manual & Parts List Download Page 17 | Manualshive

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7.

TROUBLESHOOTING

< No power on >

Does display appear by pressing
Reset button?

Does it sound by key enter?

Do batteries make positive contact
with the battery springs?

Adjust contrast

Replace batteries

Check other function

Refer to <No/Erratic display>

Adjust contact and clean battery
spring

N

Y

Y

N

N

Y

Y

N

N

Is contrast adjustment OK?

Is power of batteries enough?

Y

Is 3-pin of S-81253 (REG1) 5.3 [V]?

N

N

Are capacitor C8, C9, C10, C11,C12
OK?

Y

Replace REGT1

1

Replace C8, C9, C10, C11,C12

Y

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Summary of Contents for SF-4300B

Page 1: ...MAR 1994 R with price SF 4300B LX 588 SF 4300B ...

Page 2: ...NCE 10 5 1 RESET OPERATION 10 5 2 TO ADJUST THE DISPLAY CONTRAST 11 5 3 TO CHECK THE MEMORY STATUS 11 5 4 THE SOUND MENU 11 6 LSI IC Pin function 12 6 1 CPU 12 6 2 RAM µPD43256G 101215LL LSI3 13 6 3 VOLTAGE REGULATOR S 81253SGUP REG1 14 6 4 VOLTAGE DETECTOR S 80752AN DET1 14 7 TROUBLESHOOTING 15 8 HARD CHECK 18 9 ASSEMBLY VIEW 23 10 PARTS LIST 25 ...

Page 3: ... 1 1 SCHEMATIC DIAGRAM 1 1 MAIN PCB ...

Page 4: ... 2 1 2 KEY MATRIX ...

Page 5: ...rectory Approximately 400 hours repeating one minute of input and 10 minutes of display in Telephone Directory Approximately 12 months for memory back up Test condition 20 C Auto power off Approximately 6 minutes after last key operation Operating temperature 0 C 40 C 32 F 104 F Dimensions Unfolded 9 6H 122W 158 5Dmm 3 8 H 4 3 4 W 6 1 4 D Folded 12 4H 122W 81 5Dmm 1 2 H 4 3 4 W 3 1 4 D Weight 89g ...

Page 6: ... Starting time specified alarm time set Approximately 1020 under the following conditions 1 item per day 20 characters per item 30 days per month Starting time specified no alarm time Reminder Approximately 1680 under the following conditions 10 characters per item Alarm time set Approximately 1900 under the following conditions 10 characters per item No alarm time ...

Page 7: ...y with a new one making sure that the positive side of the new battery is facing up so you can see it 4 Replace the battery holder and secure it by tightening its screw Be sure careful that you do not over tighten the screw 5 Repeat steps 2 through 4 for the other two batteries Be sure to replace all two batteries Never mix old batteries with new ones and be sure to use CR2032 lithium batteries on...

Page 8: ...slave machine 4 DATA TRANSFER SF 4300B can transfer customers data to other SF 4300B with memory protection only when replacing the LCD or the outer case How to transfer the data Before connecting the cable SB 60 62 be sure to reset the slave machine to clear all data 1 Turn off the power switch and connect the two units using the cable SB 60 62 as shown in the drawing M SUN 1901 2 3 SB 60 62 acce...

Page 9: ...hed off 2 Remove the covers from the connectors on the two SF Units 3 Connect the two SF Units using the optional SB 60 62 cable You can also connect them using an SB 60 62 cable Important Be sure to replace the connector covers on the SF Units when you are not performing data communications 4 Check the hardware parameters 1 Select TEL mode or press 1 under MENU screen 2 Press FUNC twice to displa...

Page 10: ...FUNC twice to display the second function menu You can perform the above operation while the initial screen of the Memo Mode Schedule Keeper Calendar or Reminder is displayed also 2 Press 4 to select DATA COMM 3 Press 2 to select RECEIVE 6 Set up the customer s machine 1 While an initial screen is displayed press FUNC twice to display the second function menu You can perform the above operation wh...

Page 11: ...dar To abort the send operation at any time press ESC If an error occurs during the send operation the message TRANSMIT ERROR appears on the display Press ESC to clear the error message 6 After the send operation is complete the display returns to the initial screen of the mode you were in when you started this procedure 1 ONE ITEM 2 MODE DATA 3 ALL DATA SEND SEND ALL DATA SET ESC 4 1 3 1 SEND 2 R...

Page 12: ...letes all data stored in the SF Unit s memory Make sure that you really want to delete the data before you continue 2 Press Y to reset the memory and delete all data or N to abort the reset operation without deleting anything Note that the letter key you press to indicate yes depends on the system language as noted below English Y Spanish S German J French O Italian S Following the reset operation...

Page 13: ...e Telephone Directory Mode You could enter any mode except the Calculator mode here 2 Press SHIFT and confirm that the S indicator is on the display 3 Press CONT 4 Use the and keys to adjust the contrast 5 After you are finished press ESC to clear the contrast adjustment display 5 3 TO CHECK THE MEMORY STATUS Hold down SHIFT CAPA to display a screen that shows the current memory status To clear th...

Page 14: ...3 WEB Out Write enable signal for RAM 14 15 RA15 16 Out Address bus Not used 16 30 A0 14 Out Address bus 31 38 IO0 7 I O Data bus 39 54 KY0 15 I O Key signal 55 SW In Battery switch On L 0 V Off H 6 V 56 DEBUG Test for manufacturer 57 ON Out Data communication enable 58 CRCKI In GND 0 V 59 SOUTB Out Transmission data output 60 SIN In Transmission data input 61 VDD In Power supply 5 3 V 62 TEST Tes...

Page 15: ...ot used 72 INTO In Low battery detection INTO 5 2 V No power on 73 STNT GND 0 V 74 VLCD In Power supply 5 3 V 75 171 S0 95 Out Segment signal for display 172 199 C5 32 Out Common signal for display 168 200 NC Not used 6 2 RAM µPD43256G 101215LL LSI 3 A0 A14 Address input signal IO0 IO7 Data signal Input Output WE Write enable signal CS Chip select signal OE Output enable signal CPU WEB CPU CSRA2 ...

Page 16: ... Vout 5 3V 5 6 4 VOLTAGE DETECTOR S 80752AN DET1 Detection Voltage VDET 5 2V 2 5 5 07V MIN 5 33V MAX Input voltage Output voltage 5 2V 5V 5 2V 0V 2 Vin 1 Vout 3 GND 1 GND 2 Vin 3 Vout OUT GND VIN VREF RA RB 1 2 3 RI 1 2 3 VDD OUT VSS VSS VDD VDD VDD VDET VDET ...

Page 17: ...t with the battery springs Adjust contrast Replace batteries Check other function Refer to No Erratic display Adjust contact and clean battery spring N Y Y N N Y Y N N Is contrast adjustment OK Is power of batteries enough Y Is 3 pin of S 81253 REG1 5 3 V N N Are capacitor C8 C9 C10 C11 C12 OK Y Replace REGT1 1 Replace C8 C9 C10 C11 C12 Y ...

Page 18: ... DET1 N Replace CPU LSI1 Does RAM make positive contact with PCB Y N Resolder RAM LSI3 Replace RAM LSI3 or CPU LSI1 Does key make positive contact with PCB Ass y Y DoesCPUmakepositivecontactwithPCB N Replace CPU LSI1 Y Resolder CPU LSI1 Is 1 Pin of S 80752AN DET 1 5 V Is 11 Pin of CPU LSI 1 sending the signal ...

Page 19: ...LSI1 make positive con tact with PCB CONTRAST MAX Resolder Y N Resolder Replace CPU IC Y High current consumption Y Check PCB Is there any short circuit Y N Are the several capacitors OK Replace capacitors Are voltage of several capacitors enough V1 1 3 V V2 2 5 V V3 2 7 V V4 3 9 V Replace CPU LSI1 Check solder part of C6 C7 C8 C9 C10 or replace ...

Page 20: ...isplay Checker display Reverse checker display 1 2 3 5 6 7 TEST 2 MEMORY MENU 3 KEY 4 BUZZER 1 DISP 5 I F DISP 4 RVS 1 WHITE 5 FRAME 2 BLACK 6 DOT 4 3 CHECK 7 TIME Main menu Display check 1 1 4 2 3 4 SELF TEST PROG PRESS SEARCH QUIT BY OFF CASIO AUG 1993 The short pad is lo cated behind the tape I SEARCH ...

Page 21: ...ME Check if timer is working Key check 9 8 10 11 12 No display 13 Dots appear at 4 corners TIME DISPLAY 00 00 00 14 Check the key No appears on the display Check the key sounds To return to the menu mode enter SEARCH 5 00 01 02 03 04 56 57 KEY 1 RANDOM 2 AUTO TEST 2 MEMORY MENU 3 KEY 4 BUZZER 1 DISP 5 EXT 2 3 7 ESC 6 ...

Page 22: ... 1 sound 15 16 17 18 19 20 21 Buzzer check SEARCH TEST 2 MEMORY MENU 3 KEY 4 BUZZER 1 DISP 5 EXT BUZZER 1 BEEP 2 ALARM1 3 ALARM2 4 2 ESC BUZZER 1 BEEP 2 ALARM1 3 ALARM2 TEST 2 MEMORY MENU 3 KEY 4 BUZZER 1 DISP 5 EXT ESC 2 MEMORY 3 WR2 4 READ2 1 WR1 5 DUMP 2 READ1 6 CHKSUM 1 ...

Page 23: ...ter few seconds MEMORY 3 WR2 4 READ2 1 WR1 5 DUMP 2 READ1 6 CHKSUM EXECUTING COMPLETE 32KB 2 TEST 2 MEMORY MENU 3 KEY 4 BUZZER 1 DISP 5 EXT ESC 23 24 Check sound If RAM has defect error message will be appeared Press RESET key 26 25 ESC ...

Page 24: ...9 ASSEMBLY VIEW 23 28 29 21 20 22 2 1 5 18 4 c9 c11 LSI JC1 X1 25 6 10 27 12 7 26 9 11 14 13 24 15 19 23 8 27 17 16 3 ...

Page 25: ... 5 82 A N 3 6409 6300 Battery contact spring EF01DB20102 2 20 16 C N 4 6409 6310 Battery contact spring EF02DB10100 2 20 16 C N 5 6409 6090 PCB ass y DB20XX0300V 1 1 1 3 060 A This ass y contains the above parts as its element N 6 3122 2380 Buzzer EFB S55C41A8 1 10 36 C N 7 6409 6200 Lower case FABDB201004 1 5 61 X N 7 6410 8340 Lower case USA CANADA FABDB201012 1 5 70 X N 8 6409 6210 Battery chan...

Page 26: ...27 6512 0980 Screw MAB20086306 8 20 2 X N 28 6409 6240 Hard case FC1DB20001 1 5 78 X N 29 6409 6250 Label HGG00012603 1 1 130 X Notes N New parts R A Essential M Minimum order supply quantity B Stock recommended R Rank C Others Q Quantity used per unit X No stock recommended 26 ...

Page 27: ...MA0600741A ...

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