Casio 120CR Manuals

SERVICE MANUAL ELECTRONIC CASH REGISTER (without price) Printer Model : M-42V 120CR (EX-268B) 160CR (EX-268B) SEP. 2000 CONTENTS 120CR 160CR Page 1. SPECIFICATIONS........................................................................................ 1 2. INITIALIZE (MAC) OPERATION.................................................................. 2 3. BLOCK DIAGRAM....................................................................................... 3 3-1. PCB CONNECTION ..................................................................................................... 3 3-1. BLOCK DIAGRAM....................................................................................................... 4 4. DISASSEMBLY ............................................................................................ 5 5. CIRCUIT EXPLANATION ............................................................................ 8 5-1. Power supply circuit .................................................................................................. 8 5-2. Reset circuit ................................................................................................................ 9 5-3. Data communication between CPU and EEPROM ................................................ 10 5-4. Printer drive circuit................................................................................................... 12 5-5. Pin description (CPU uPD78043FGF) ..................................................................... 12 6. DIAGNOSTIC OPERATIONS .................................................................... 14 6-1. To start the diagnostic operation............................................................................ 14 6-2. Check items .............................................................................................................. 14 6-3. Operations................................................................................................................. 15 7. ERROR CODE LIST................................................................................... 19 7-1. Operation error code ................................................................................................ 19 8. IC DATA ..................................................................................................... 20 9. PCB LAYOUT ............................................................................................ 21 10. CIRCUIT DIAGRAM ................................................................................... 22 11. PARTS LIST............................................................................................... 29 — 1 — • CPU Name µPD78043FGF076-3B9 Number of control bit 8bit RAM (Built-in) 624 Kbits • ROM Name BR93LC46A Capacity 1024 bits • Printer Name M-42V-009-040 Print method Print wheel selecting type serial printer MCBF 700,000 lines Life • Roll paper Type Fine-quality paper Size Width 57.5 ± 0.5 mm Roll diameter 80 mm or less 1. SPECIFICATIONS 1-1. Electrical specifications 120 V 220 V 230 V 240 V • Power consumption In operation Max. 0.11 A 0.05 A 0.06 A 0.06 A Min. 0.07 A 0.04 A 0.05 A 0.05 A Power OFF 0.06 A 0.03 A 0.04 A 0.04 A • Memory protection Back-up battery Mangan Battery (UM-3 × 3 pcs) Back-up period 1 year (25 °C) Battery life Replace the battery every 1 years. • Clock & Calendar Accuracy Within ± 30 sec. per month Auto calendar Effective until 2099 A.D. 1-2. Environmental specifications • Operating temperature 0 °C ~ 40 °C • Operating humidity 10 % ~ 90 % • Storage temperature -25 °C ~ 65 °C • Storage humidity 10 % ~ 95 % • Vibration strength 1.5 G (The machine must be in the carton box) 1-3. Main components — 2 — DEVICE NAME MODEL NOTE • Wet cover WT-80 • INK ROLL IR-40 1-5. Option List 1-4. Drawer List DRAWER NAME Specification NOTE • DL-1838 (S type) Europe, UK, Germany, Other countries • DL-2768 (M type) Europe, UK, Other countries CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacture’s instructions. VORSICHT ! Explosionsgefahr bei unsachgemäßem Austausch der Batterie. Ersatz nur durch denselben oder einen vom Hersteller empfohlenen gleichwertigen Typ. Entsorgung gebrauchter Batterien nach Angaben des Herstellers. ADVARSEL ! Lithiumbatteri - Eksplosionsfare ved fejlagtig hándtering. Udskiftning má kun ske med batteri af samme fabrikat og type. Levér det brugte batteri tilbage til leverandØren. 2. INITIALIZE (MAC) OPERATION 1. Set the Mode Switch to OFF. 2. Plug the power cord of the ECR off an AC outlet. 3. Remove the memory protection batteries. 4. Leave the ECR a few minutes and plug the power cord into an AC outlet. 5. Set the memory protection batteries. 6. Turn the Mode Switch to REG position.