Olivetti ECR 6800, Руководство по обслуживанию

Страница: 6 / 68

vi Service Manual Y108540-8
4. TROUBLESHOOTING AND ELECTRONIC CIRCUITRY ........................................ 4-1
4.1 GENERAL REPAIR PROCEDURES .......................................................................... 4-1
4.2 GENERAL MACHINE CIRCUITRY ............................................................................. 4-3
4.2.1 BLOCK DIAGRAM ....................................................................................................... 4-3
4.3 POWER SUPPLY CIRCUIT ......................................................................................... 4-4
4.3.1 POWER SUPPLY CIRCUIT TROUBLESHOOTING .................................................... 4-5
4.4 TRANSFORMER WIRING DIAGRAM ......................................................................... 4-6
4.4.1 TRANSFORMER TROUBLESHOOTING ........................................................................ 4-6
4.5 POWER SUPPLY SPECIFICATIONS ......................................................................... 4-6
4.6 RESET CIRCUIT .......................................................................................................... 4-7
4.7 POWER FAIL CIRCUIT ............................................................................................... 4-8
4.8 WINDING MOTOR CIRCUIT ........................................................................................ 4-9
4.8.1 WINDING MOTOR TROUBLESHOOTING .................................................................... 4-9
4.9 DISPLAY CIRCUIT .................................................................................................... 4-10
4.9.1 DISPLAY TROUBLESHOOTING ................................................................................. 4-12
4.10 DISPLAY TUBE CHARACTERISTICS ..................................................................... 4-12
4.10.1 CONNECTOR PINS ................................................................................................... 4-13
4.11 ECR 6800/6900 KEYPAD .......................................................................................... 4-14
4.11.1 KEYPAD TROUBLESHOOTING ................................................................................ 4-14
4.11.2 KEYPAD CIRCUIT ................................................................................................... 4-15
4.12 ECR 6920F KEYPAD ................................................................................................. 4-16
4.12.1 KEYPAD TROUBLESHOOTING ................................................................................ 4-16
4.13 DRAWER CIRCUIT .................................................................................................... 4-18
4.13.1 DRAWER TROUBLESHOOTING .............................................................................. 4-18
4.14 BUZZER CIRCUIT ...................................................................................................... 4-19
4.14.1 BUZZER TROUBLESHOOTING ................................................................................ 4-19
4.15 BATTERY CIRCUIT .................................................................................................. 4-20
4.15.1 BATTERY TROUBLESHOOTING .............................................................................. 4-20
4.16 MEMORY CIRCUIT .................................................................................................. 4-21
4.17 PRINTER CIRCUIT ................................................................................................... 4-22
4.17.1 PRINTER TROUBLESHOOTING ............................................................................... 4-23
4.18 MPD78F0547 MICROCOMPUTER ............................................................................ 4-25
4.19 SERIAL INTERFACE CIRCUIT (ECR 6800 EXCLUDED) ........................................ 4-27
4.19.1 SERIAL INTERFACE CIRCUIT TROUBLESHOOTING ............................................. 4-29
4.20 DIAGNOSTIC SOFTWARE ........................................................................................ 4-29
4.20.1 DIAGNOSTIC CHECK & FINISHED GOODS CHECK ............................................... 4-29
4.20.2 SOFTWARE VERSION CHECK ................................................................................. 4-29