Casio SF-8350- Manuals

— 6 — 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 bat...

— 7 — Message Meaning Action DATA ITEM NOT Text specified for Correct or change FOUND! search does not exist. specified text. PASSWORD Wrong password Enter correct MISMATCH! entered. password. MEMORY FULL! No more room in Delete unnecessary memory for storage of data items from data. memory. DATA ER...

— 8 — Following the RESET operation, the Home Time Display appears. The initial settings of the SF Unit afterreset are shown below. HOME TIME: G.M.T.JAN/1/1993 (FRI)12:00 AM12-hour format WORLD TIME: New York Daily Alarm: 12:00 PM Sound: Schedule alarm ON Daily alarm OFF Key ON Character input: CAPS...

— 11 — Message Cause STOPPED ! • 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. Following the m...

— 13 — 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...

— 14 — C0~C47 CPU ROM ROM (Character Generator) (Operation Program) HD62063B01 POWER SUPPLY CHIP FOR LCD SC371015FU GATE ARRAY µ PD65005G-452-22 Power supply circuit CARD LOCK SWITCH FREE (OFF) LOCK (ON) VDD GND TX, RX LCD DRIVE VOLTAGES V1 ~ V4, VREG TO KEYBOARD DATA BUS S112~S191 S32~S111 S0~S31 L...

— 15 — 14. Apply VDD to ROM. VREG,V1~V4 Output for LCD drive PDB µ PD3055GF002-2BA VDD2 VDD1 VO1 GND (Pin3) (Pin2) (Pin32) (Pin20) (Pin31) (Pin25) (Pin40) (Pin17) (Pin24) (Pin35) VIN GND VDD VOT LSI MON SWO LSO VOB µ PD65005G-452-22 KAC KIO ADDRESS BUS 2 MHz VDD ON MAIN SWITCH SW GND VDD GND Transis...

— 18 — VDD Transistor Q1 VOB E0 DATA ADDRESS ROM µ PD3055GF002-2BA CPU VCC (Pin35) µ PD65005G-452-22 " L " VDD R4 (Pin1) (Pin3) (Pin2) (Pin30) VOT VIN "H" "H" V2ON INT1 CPU PDB µ PD3055GF002-2BA POWER SUPPLY CHIP SC371015FU µ PD65005G-452-22 GATE ARRAY (Pin45) (Pin69) (Pin29)...

— 19 — VCOMP2 VCOMP1 VCOMP1 "H" "L" CR-2032 X 2 P7 BLI ONMK VCOMP2 VCOMP1 Power Supply Chip VDD1 VDD2 Main batteries SC371015FU µ PD3055GF002-2BA C P U Gate Array µ PD65005G-452-22 GND2 (Pin1) (Pin19) (Pin37) (Pin27) (Pin7) (Pin79) (Pin6) GND1 (Pin22) "H" "L" Less tha...

— 24 — 11. DIAGNOSTIC OPERATION SELECT MENU 1 DISPLAY2 MEMORY3 KEY4 BUZZER5 I/F Check pad Main switch 1. Diagnostic mode The diagnostic mode appears when main switch is turned onwhile there is a short in the checkpad. After this operation,the machine will beep and display "SELF-TEST". The me...

— 29 — Generally, check the machine with the followning steps for repair. Main battries 6V? Key input OK? No Save data to P/C if necessary. Current consumption OK? Follow repair section 2. Follow repair section 3. No Replace main battries (CR2032 2pcs.) Display OK? Load data from P/C if necessary. Y...

— 31 — Poor connection? Solder line No Replace parts. Yes 1 Pin 31 of SC371015FU "H"? Solder line Yes Pin 30 of µ PD65005G-452-22 "H" ? 1 LCD drive voltages OK? (Pin8~12) Yes Poor connection on chipresistors R8~R10 ? Poor connection? No Poor connection on chipcapacitor C7~C8 ? Chip c...