Casio CE-6000 Troubleshooting Manual Download

Page: 6 / 18

- 6 -

Trouble shooting ECR V1.01

[DC/DC convertor circuit for Dot Display Tube at Display PCB E445B-E2]

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 Display PCB E445B-E2]

VF1

Signal at Q3 position

Signal at VF1 position

Summary of Contents for CE-6000

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...