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Trouble shooting ECR V1.01

RAM1 Data bus D0

RAM Chip enable signal

RAM1 chip enable

RAM1 chip enable
Pin No.22

RAM1 Address bus A0

RAM1 IC3

[ RAM1 chip enable signal ]

RAM1 chip enable

RAM1 chip enable
Pin No.4 IC30 (74LV02)

Содержание CE-6000

Страница 1: ...he Main P C Board 1 2 3 IPL loading 2 4 Normal diagnostic operation 2 5 Repair the Main P C Board 2 3 The example of repair 3 1 How to remove the IC 3 2 Preparation for mounting the new IC 3 3 How to...

Страница 2: ...y If it is no display please refer the section 2 4 of page XX for repair Display EEEEEEEEEE means the non application in Flash ROM If the display EEEEEEEEEE please retry from START Display 0000000000...

Страница 3: ...For the error FErr20 and 27 it may occur when the local software IPL is developed in case the developing time Normally this error is never happened in the standard IPL data For the error FErr26 it may...

Страница 4: ...ch repair procedure refers to the each repair section Note 2 Refer the service manual section 5 for open the upper case procedure NG OK NG OK NG OK START Check around the power supply Check osillation...

Страница 5: ...upply PCB CN1 Pin No 1 VC1 DC32 3V For the Display power CN1 Pin No 2 VC2 DC24V For the Printer power CN1 Pin No 3 VLED DC5 85V For the Logic circuit power CN1 Pin No 4 GND Signal GND CN1 Pin No 1 DC...

Страница 6: ...e at Display PCB E445B E2 D2 Q2 VD1 Signal at D2 position Signal at VD1 position Signal at Q2 position 3 Check the DC DC convertor in display PCB DC DC convertor circuit for 7 segment Display Tube at...

Страница 7: ...resolder the connection point or replace IC10 of CPU 2 2 3 Procedure Repair 2 1 Visually check on the Main P C Board For example cold solder and surface flaw 2 Check the data bus line and the address...

Страница 8: ...enable signal 5 If the signals of the address bus and the data bus are not stable Ex After some time the all signal becomes GND level or so on replace IC10 of the CPU to new one Flash ROM1 chip enable...

Страница 9: ...shooting ECR V1 01 RAM1 Data bus D0 RAM Chip enable signal RAM1 chip enable RAM1 chip enable Pin No 22 RAM1 Address bus A0 RAM1 IC3 RAM1 chip enable signal RAM1 chip enable RAM1 chip enable Pin No 4 I...

Страница 10: ...means the non application in Flash ROM If the display EEEEEEEEEE please retry from START Display 0000000000 means waiting the IPL start command Input code 44449999 and press SUB TOTAL button Display...

Страница 11: ...ata to the ECR Input code 20 and press SUB TOTAL button Display is changing from 2 IPL4 XXX to 2 IPL XXX XXX number will be counted down If the number does not count down please check the connection o...

Страница 12: ...atus test 3 Individual function test Note Details of Normal diagnostic opertion refer to the SERVICE MANUAL NG OK NG OK NG OK NG OK NG OK NG OK START To START Normal diagnostic operation refer to the...

Страница 13: ...G 1 RAM2 3 or 4 is broken 2 Poor connection of solder line 3 Chip enable IC is broken OK NG 1 Flash ROM2 is broken 2 Poor connection of solder line 3 Chip enable IC is broken OK 1 Print head is broken...

Страница 14: ...inserted little by little between IC and P C B 6 Remove IC slowly while confirming whether solder is melting 5 IC clamps the location where there is not pin with tweezers 7 Complete Note Please handl...

Страница 15: ...ding the new solder that melted with soldering iron Remaining even 3 places work similarly 4 Able to solder IC easily by above work 3 5 New IC is put on P C B At this time that the pin of IC does not...

Страница 16: ...photograph At this time top of the solder iron is the condition which only the solder is touching and part from the pin See Fig 3 Most of the solder can cause to migrate it to the left end of IC by t...

Страница 17: ...hol is used to remove rosin 3 Rosin is removed carefully by using alcohol and cotton applicator 4 After that around IC becomes clean like above photograph Note1 Be sure that the IC have no bent pins A...

Страница 18: ...ASIO TECHNO CO LTD Overseas Service Division Nishi Shinjuku Kimuraya Bldg 1F 5 25 Nishi Shinjuku 7 Chome Shinjuku ku Tokyo 160 0023 Japan Trouble shooting V1 01 Correction of page lines for Miss print...