Casio SF-8500 Скачать руководство пользователя страница 5 | Manualshive

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Key Matrix

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Содержание SF-8500

Страница 1: ...SF 8500 LX 575 AUG 1993 R without price INDEX...

Страница 2: ...stem chart 15 10 2 Power supply circuit 16 10 3 CPU pin description HD62076C02 21 10 4 Gate array pin descriptions PD65005GC 566 3B6 22 10 5 Power supply chip IC pin descriptions SC371015FU 22 10 6 Ch...

Страница 3: ...1 1 SCHEMATIC DIAGRAM 1 1 Main PCB...

Страница 4: ...2 1 2 Display PCB...

Страница 5: ...3 1 3 Key Matrix...

Страница 6: ...life Main Approximately 120 hours Repeated cycle of 1 minute data input into Telephone Directory followed by 10 minute display Operation temperature of 20 C Approximately 150 hours Continuous display...

Страница 7: ...and fasten it in place using the screw B To replace the back up battery Before replacing the back up battery note the following precautions Do not remove the main batteries from the SF Unit while bac...

Страница 8: ...of owner s UNDER DATA manual ERROR 4 ERROR MESSAGE 5 TO RESET THE DIGITAL DIARY Before describing the RESET operation a note of WARNING The following procedure will erase all data stored in memory in...

Страница 9: ...ith memory protection only when replacing the LCD or the outer case How to transfer the data Before connecting the cable SB 60 or SB 62 be sure to reset the slave machine to clear all data 1 Turn off...

Страница 10: ...s follows 2 6 Set up the customer s machine 1 While the transmitting unit is in the Calendar Display Telephone Directory Business Card Library Memo Mode or Schedule Keeper press the key followed by to...

Страница 11: ...f Telephone Directory data Business Card Library data Memo data Schedule Keeper data and Calendar data If the customer s machine uses full memory it takes about one minute and ten seconds for this tra...

Страница 12: ...r storage of Telephone Directory Business Card Library Memo Calendar and Schedule Keeper data SPREADSHEET Total memory used for storage of Spreadseet data Press the key and then press the key to check...

Страница 13: ...witch sheet from the display frame with care using a sharp tweezers and remove 2 screws then remove the display back cover 2 Remove the blind plate of hinge and then release the 2 screws of hinge cove...

Страница 14: ...Remove the batteries Refer section 3 in this manual 3 Release the 8 screws of the back cover Then remove the back cover 4 To check the circuit by oscilloscope apply the power to main PCB as follow GND...

Страница 15: ...DD GND LCD DRIVE VOLTAGES V1 V4 VREG TO KEYBOARD DATA BUS S112 S191 S32 S111 S0 S31 LCD 192 48 dots INTERFACE FOR DATA TRANSMISSION DATA RECEPTION OPEN OFF LOCK ON PD23C4001EBGW 304 MSM6585AV Z 358B L...

Страница 16: ...5 7 8 9 10 11 12 PD23C4001EBGW 304 Operation program ROM LSI Pin26 MON PD65005GC 566 3B6 VOB Pin25 VDD GND VCC 14 Pin3 Pin1 H L 13 Pin2 OEO Pin40 Pin27 L 15 Pin43 Pin39 RSO Pin49 L 16 17 18 CE OE Pin2...

Страница 17: ...N key under the ON side of the Main switch the CPU LSI1 generates the signal to turn the display ON at the terminal V2ON Pin No 45 This signal goes to the terminal VIN Pin No 31 of the GATE ARRAY LSI3...

Страница 18: ...this signal In this condition the voltages for LCD will be cut off compulsorily When the voltage from the memory back up battery becomes 2 5V 0 065V the terminal SUBOUT Pin No 4 of the power supply c...

Страница 19: ...own below MAIN POWER SUPPLY CIRCUIT GND2 SUB IN CR2032 Back up battery 8 VSS 9 V1 V2 10 V3 11 V4 12 POWER SUPPLY CHIP SC371015FU 6 5 4 V COMP2 V COMP1 V COMP0 SUB OUT 7 22 2 32 The V comp0 V comp2 and...

Страница 20: ...nal is H when VDD is applied to CPU Therefore when pressing the power on switch CPU will generate a clock pulse 2 MHz for start up the system PD65005GC 566 3B6 HD62076C02 GATE ARRAY PD65005GC 566 3B6...

Страница 21: ...NT1 of CPU and also it will be sent to PDB terminal of power supply chip to generate LCD drive voltages After gate array send VOT signal gate array send L signal from VOB terminal to base terminal of...

Страница 22: ...K17 Not used 54 KAC Out L Pulse Power on switch signal output 55 65 67 KC0 KC11 Out H Pulse Key common signal output 66 GND In L L GND terminal 68 INT2 In H H Interrupt signal from ROM Charactor gener...

Страница 23: ...In H H Power down detection input 29 BLI In H H Battery detection V comp1 input 30 DEB Out H Pulse Chip selection signal for ROM Charactor generator 31 VIN In L H Power on signal input 32 VOT Out L H...

Страница 24: ...signal Pin No Name In Out Status Status Description of OFF of ON 3 SUB IN In 3V 3V Back up battery detection input 4 SUB OUT Out H H Back up battery detection output less than 2 5V L 5 V COMP0 Out H H...

Страница 25: ...Pulse Chip enable signal from Gate array 24 OEB In L Pulse Output enable signal from Gate array 1 32 N C VCC In L H VDD terminal Pin No Name In Out Status Status Description of OFF of ON 2 12 23 A0 A...

Страница 26: ...le there is a short in the checkpad After this operation the machine will beep and display SELF TEST The menu appears after press SET key Tests are conducted by selecting the mode from the list on scr...

Страница 27: ...ump contents of memory direc tion depens on setting of internal extarnal switch MEMO key Call up checksum and XOR values for connected ROM RAM data SCHEDULE key Bring up clock display The present time...

Страница 28: ...as 02 etc Accordingly the SET keys is 81 To release this test press SEARCH key TEL key Limits the mode mentioned above so that the keys must be pressed in order according to the key code If an error...

Страница 29: ...h the parity bit NON N EVEN E NON N ODD O SCHEDULE key Switch the data length 7 bit 7 or 8 bit 8 5 Buzzer check Parameter The SPREADSHEET to MEMO keys are used to select mode the CALENDAR SCHEDULE and...

Страница 30: ...lay will be off mode auto power off mode TRNS ERROR NOTE As diagnostic program area does not have all ASCII code to display a reception data some charactor will be changed to other charactor For examp...

Страница 31: ...tery contact Reset operation Yes Repair section 1 For no key input problem Pin 2 of SC371015FU Approx 4 5 V Poor connection Solder line No Replace parts Yes 1 Pin 26 of PD65005G 566 3B6 L Poor connect...

Страница 32: ...f PD65005G 566 3B6 H Pin 32 of PD65005G 566 3B6 H Pin 31 of SC371015FU H 1 Yes Yes Yes Yes Yes Solder line No Replace parts Yes 1 Pin 39 of PD65005G 566 3B6 L Poor connection Solder line No Replace pa...

Страница 33: ...371015FU 1 Replace parts No Poor connection or cut of heat seal cable Yes Replace heat seal 1 Poor connection on LCD driver Yes 1 Solder line Poor connection or cut of heat seal cable for LCD Replace...

Страница 34: ...33 13 PARTS LIST SF 8500...

Страница 35: ...34...

Страница 36: ...35 14 PCB VIEW...

Страница 37: ...37 15 ASSEMBLY VIEW...

Страница 38: ...8 11 10 Nishi Shinjuku Shinjuku ku Tokyo 160 Japan Telephone 03 3347 4926...

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