(with price) SF-8350R(LX-523) JAN.
CONTENTS 1. SCHEMATIC DIAGRAM................................................................................................ 1 2. SPECIFICATIONS ......................................................................................................... 5 3. TO REPLACE THE BATTERY ...................................................................................... 6 4. ERROR MESSAGE ....................................................................................................... 7 5.
1. SCHEMATIC DIAGRAM 1-1.
1-2.
1-3.
2.
3. TO REPLACE THE BATTERY A) To replace the main batteries Before replacing the main batteries, note the following precautions. • Do not remove the back-up battery from the SF Unit while main batteries are removed. • Be sure to replace both batteries at the same time, and do not use an old battery with a new one. 1. Remove the screw that hold the battery compartment cover in place. 2. Remove the battery compartment cover by sliding it in the direction indicated by the arrow in the illustation. 3.
4. ERROR MESSAGE Message Meaning Action Text specified for search does not exist. Correct or change specified text. Wrong password entered. Enter correct password. MEMORY FULL! No more room in memory for storage of data. Delete unnecessary data items from memory. DATA ERROR! CONSULT YOUR OWNER'S MANUAL UNDER "DATA ERROR" Abnormal data caused by strong impact, static electricity, etc. Consult the "DATA ERROR" section on page 3 of owner's manual. DATA ITEM NOT FOUND! PASSWORD MISMATCH! 5.
Following the RESET operation, the Home Time Display appears. The initial settings of the SF Unit after reset are shown below. HOME TIME: G.M.T. JAN/1/1993 (FRI) 12:00 AM 12-hour format WORLD TIME: New York Daily Alarm: 12:00 PM Sound: Schedule alarm Daily alarm Key Character input: CAPS System Language: English 6. ON OFF ON TO SAVE THE DATA TO OTHER MACHINE SF-8350R can transfer customers data to other SF-8350R with memory protection only when replacing the LCD or the outer case.
4) Check the hardware parameters, and if the units have another condition, reset as follows. To change the hardware parameters, press the , , and cursol keys. To set the hardware parameters, press the set key. *** HARDWARE PARAMETERS PARITY BIT LENGTH7 bits BPS 1200 EVEN 2400 *** ODD 7 bits 4800 NONE 8 bits 9600 TEL TEL FUNCTION 4 4 5) Set up the slave machine.
2 Press 1 to select "TRANSMIT" and the following menu appears. 1 ONE DATA ITEM 2 MODE DATA ITEMS 3 ALL DATA ITEMS 1 — SEND — TEL 3 Press 3 to select "ALL DATA ITEMS", and the following display appears to confirm whether you wish to proceed. SEND ALL DATA ITEMS ? 3 YES SET / NO ESC TEL 4 Press the SET key to proceed with the data transmission, or press ESC if you wish to cancel.
Message STOPPED ! 7. Cause • ESC key pressed on transmitting or receiving unit. • Memory area of receiving unit full. • Battery power drops below a certain level. TRANSMIT ERROR ! Cable connection broken or abnormal noise in cable. MEMORY FULL ! Memory area of receiving unit full. TO CHECK THE MEMORY CAPACITY The memory Capacity display tells you how much total memory is used for storage of Telephone Directory, Business Card Library, Memo, Calendar, and Schedule Keeper data.
8. DISASSEMBLY (SF-8350R) 1) To open display unit 1. Remove the key switch 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 cover. 3. Release the 5 screws of display PCB and remove the display PCB.
2) To open battery cover and back cover 1. Release the one screw of battery cover and remove the battery cover. 2. 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: External Power supply Switch GND Prepare some 2P switch for Main switch. +6V +3V Prepare some power supply for + 6V and +3V.
9.
10. CIRCUIT EXPLANATIONS 10-1. System chart Generally, SF-8350R is working with the following steps. VDD 11 "H" (Pin30) (Pin31) 12 PDB 2 (Pin3) VDD VO1 VREG,V1~V4 Output for LCD drive Power supply chip SC371015FU (Pin2) VDD1 GND VDD2 (Pin20) (Pin32) 1 (Pin17) (Pin39) VDD VOT GND Gate array (Pin29) (Pin24) LSI µPD65005G-452-22 VIN MON Open SWO VOB LSO (Pin35) (Pin25) (Pin40) Batteries CR-2032 X 2 pcs.
10-2.Power supply circuit 1) Power supply chip SC371015FU + C8 21 18 + C7 20 17 16 R8 R9 R10 The IC SC371015FU is power supply chip for SF8350. When IC SC371015FU receives a Voltage 6V (CR-2032 × 2 pcs.) at the terminal VDD1(Pin No.2), the regulated voltage VDD (4.3~4.7V) will be applied to the VDD lines. The outputs Vss (VREG) and V1~V4 are the LCD drive voltages.
2) Gate array When VDD is applied from power supply IC SC371015FU to gate array uPD65005G-45222, gate array will send "L" signal to active the main switch signal from terminal SWO. Also, gate array will send "H" signal to release the INT0 terminal of CPU from LSO terminal. The terminal CSB is for the chip select of gate array. This signal is sent from CPU terminal CS2. And when the VDD is applied to CPU, CPU will send "H" signal to CSB terminal.
4) Power supply for LCD (Pin30) "H" (Pin69) CPU (Pin31) PDB VOT INT1 V2ON µPD3055GF002-2BA "H" (Pin45) (Pin29) POWER SUPPLY CHIP VIN SC371015FU GATE ARRAY µPD65005G-452-22 LCD drive voltages VREG,V1~V4 When the system is start up, CPU will send "H" signal to VIN terminal of gate array from V2ON terminal.
10-3.Battery voltage detection (Pin32) (Pin22) (Pin1) GND1 GND2 (Pin7) (Pin79) Power Supply Chip SC371015FU (Pin6) VCOMP1 (Pin37) VCOMP2 P7 ONMK VDD1 CPU VDD2 (Pin19) µPD3055GF002-2BA CR-2032 X 2 Main batteries The power supply IC chip SC371015FU has two kind voltage detection circuit in it.
10-4.CPU pin description (µPD3055GF002-2BA) Pin No.
10-5.Gate array pin descriptions (µPD65005G-452-22) Pin No.
Pin No. Name In/Out Status of OFF Status of ON Description 24 25 26 27 28 29 30 31 EROUT VFB MIN MAX U/D CLOCK SET PDB Out ** ** ** In In In In 6V H 5V 5V H L H L 5V 3.2V 3.2V 3.2V 5V L H H VFB capacitor terminal EROUT signal input Display contrast control signal (Up/Down) Display contrast clock signal Display contrast data reset signal 10-7.Character generator ROM pin descriptions (HD62063B01) Pin No.
10-8. Operation program ROM pin descriptions (µPD23C2001EGW342) Pin No. Name In/Out Status of OFF Status of ON Description 1,30,31 2~12, 23, 25~29 13~15, 17~21 16 22 24 32 NC A0~A16 In L L +5V Pulse Connected to VCC Address bus line (A0~A14,RA15,RA16) IO0~IO7 GND CE OE VCC Out Power In In Power L GND L L L Pulse GND Pulse Pulse +5V Data bus line (IO0~IO7) GND terminal Chip selection terminal Output enable terminal VCC terminal 10-9. RAM pin descriptions (µPD43256AGU-10/12/15LL) Pin No.
11. DIAGNOSTIC OPERATION Main switch Check pad 1. Diagnostic mode SELECT MENU 1 DISPLAY 2 MEMORY 3 KEY 4 BUZZER 5 I/F The diagnostic mode appears when main switch is turned on while 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 screen. The each test can be selected by the following function keys.
3. ROM/RAM check DISP CHNG key MEMORY INT #1 1 WRITE 2 READ 3 DUMP 4 CHKSUM 5 RTC INT---Internal RAM EXT--External RAM(RAM card) #1---Test data pattern(00,01,02...) #2---Test data pattern(FF,FE,FD....) :Return to menu TEL key :Write the set pattern to the selected RAM area Business card key :Compare the pattern displayed after # with the write data of RAM and displays the results. MEMO key :Dump contents of memory.
3) Memory dump When memory dump is operated by pressing MEMO button, a display will appear as shown at left. The first two lines, begining from the top left, signify the following address values in reference to the one megabyte "E0" area: 00001,00002,00004,....,00080,00100,00200 00400,00800,01000,....,20000,40000,80000 The lower two lines refer to the data in the "E1" area.
5. Buzzer check BUZZER 1 BEEP 2 ALARM 1 3 ALARM 2 TEL key : Key input sound every 1 second Business card key : Sound alarm 1 MEMO key : Sound alarm 2 Sound can be stopped by pressing the any key. While an alarm is sounding the screen display is as shown at left. If an irregularity is found in voltage of battery while the alarm is sounding, the alarm will stop. After 256 seconds, the alarm will stop automatically. EXECUTING ! 6.
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 example, a chapital letter will be changed to small letter. Error display Break display (Broken transmission) TRNS ERROR ! TRNS BREAK ! 7. Btattery level check Memory back up battery The memory back up voltage detector detects any irregularity in voltage, the machine goes into an error state and the display is as shown at left figure.
12. TROUBLESHOOTING Generally, check the machine with the followning steps for repair. CONDITION : Card lock switch LOCK START No Main battries 6V? Yes Replace main battries (CR2032 2pcs.) (Clean and adjust battery contact.) 1 Key input OK? Yes No Reset operation No Display OK? Yes Yes Save data to P/C if necessary. Key input OK? No Current consumption OK? No Yes Follow repair section 2. Load data from P/C if necessary. Follow repair section 1. No Data OK? Yes Follow repair section 3.
2 Connection of keyboard cable OK? Yes When press power on Key, any oscillation at oscillator? No 1 Adjust keyboard cable. No Poor connection on oscillator? Yes Yes Solder line No 1 Replace parts. Pin 45 ofµPD3055GF002-2BA "H" ? No Poor connection? No Yes Yes Solder line 1 Replace parts. Pin 29 of µPD65005G-452-22 "H" ? Yes Pin 30 of µPD65005G-452-22 "H" ? No Solder line No Poor connection? Yes Solder line No Yes 1 Replace parts.
Repair section 2 : For no display or wrong display problem START Pin 30 of µPD65005G-452-22 "H" ? No Poor connection? Yes Solder line No Yes 1 Replace parts. No Solder line Pin 31 of SC371015FU "H"? Yes LCD drive voltages OK? (Pin8~12) Yes No Poor connection? 1 Yes No Poor connection on chip Yes resistors R8~R10 ? No Poor connection on chip Yes capacitor C7~C8 ? No Chip capacitor OK ? Yes Chip resistor OK? Yes Solder line No No Replace parts. Replace SC371015FU. 1 Yes Replace heat seal.
13. N PARTS LIST (SF-8350R) Item Code No. N LSI7 LSI8 LSI6 LSI4 LSI3 LSI2 LSI1 X1 Q3 Q1 D1 D2 C13 C9 C7,C8 C12 C19 C5,C6,C15, C18,C22,C23 C21 C10 C1 C2 C3,C4 C16,C17 R1,R28 R19 R5 R4 R17 R15 R25 R2 R14 R13 R6,R23,R24 R3,R8, R9,R26 R16 R22 J1 X2 R7 N 1 2 3 4 5 Notes: N M R Q Parts Name Specification 1.
N Item Code No. 6 7 N N N N 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 N M R Q – – – – New parts Minimum order/supply quantity Rank Quantity used per unit FH100024206 APDB04XX04S(B)*1 FOB Japan N.R.
14.
44 45 46 43 — 35 — 47 48 49 50 15.
MA0600641A
