Casio CE-6000 Bedienungsanleitung

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Trouble shooting ECR V1.01

Trouble shooting guide for New ECR model

MODEL: CE-6000, CE-6100, CE-7000, TK-6000, TK-7000, TK-6500, TK-7500

< CONTENS >

1. Flowchart for trouble shooting procedures

2. Trouble shooting procedures

2-1. Mask diagnostic operation

2-2. Repair the 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 fix the IC

3-4. Cleaning after mounting the IC

1. Flowchart for trouble shooting procedures

OK NG

START

2-1. Mask

diagnostic

Result

2-3. IPL

2-2. Repair the

Main P.C.Board 1

2-4. Normal

diagnostic

Result

2-5. Repair the

Main P.C.Board 2

END

INDEX

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Trouble shooting ECR V1.01

2. Trouble shooting procedures

2-1. Mask diagnostic operation

The model CE-6000/7000 series and TK-6000/7000 series have the Mask diagnostic

operation in the machine.

The following test can be checked in the Mask diagnostic operation.

1) Flash ROM data erase after write test

2) RAM read after write test

To start the Mask diagnostic operation, perform the following operation.

START

Turn off the power switch and set the Mode switch to PGM position.

While pressing the reset switch and <JOURNAL FEED> button, turn the power switch on.

Release the reset switch first and then release the <JOURNAL FEED> button.

Then, the machine shows following code on the display.

( 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” means waiting the IPL start command.

Input code “99990000” and press <SUB TOTAL> button.

Mask diagnostic program is started.

Flash ROM data erase operation.

Display “ XX “ XX = 00 ~ 31 1BLK = 64Kbytes

Flash ROM write test operation.

Display “ XX “ XX = 00 ~ 31 1BLK = 64Kbytes

RAM1 read/write test operation.

Display “XXX “ XXX = 1FD ~ 000 1BLK = 1Kbytes

END

Display “0000000000”. This is waiting mode for IPL code input.

If there is error, error code will be displayed.

“EX”

Display “E9X “ E91 = Flash ROM erase error.

E92 = Flash ROM write error.

E93 = Flash ROM read error.

E94 = RAM1 read/write error.

Note : If the power failure is happened during Mask diagnostic operation, the

operation will be stopped and will be “EEEEEEEEEE” display.

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Trouble shooting ECR V1.01

Special error message : Fatal error code

FErr20 Unfixed address is selected and unsettled error is happened.

FErr26 Abruption of program working. The interruption of abnormal condition

( Watch dog ) is happened.

FErr27 Stack pointer address become the except RAM address area.

Note : If this error is happened, the Flash ROM program and data is damaged.

Therefore, it is necessary to down load IPL data for ECR from a P/C or a RAM PACK.

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 occur when the hard ware has some problem like a poor soldering

at the Flash ROM pins or a spillage on the circuit of the address and data bus line.

In this case, please clean the PCB and try to re-solder the Flash ROM pins and try to down load

a IPL data.

[How to solved the FErr26]

When the error FErr26 is showed on the display at the machine, please resolder the Flash ROM 1

pins as showing in the figure.

Re-solder the all lines.

Flash ROM Re-soldering

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Trouble shooting ECR V1.01

2-2. Repair the Main P.C.Board 1

To repair the No display machine, perform the following repair procedure.

Note 1 : Each repair procedure refers to the each repair section.

Note 2 : Refer the service manual section 5 for open the upper case procedure.

START

Check around the

power supply.

Check osillation of

the pulse signal

correct.

Check the data bus

line.

END

2-2-1. Repair around the

power supply.

2-2-2. Repair procedure 1

2-2-3. Repair procedure 2

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Trouble shooting ECR V1.01

2-2-1. Repair around the power supply

1) Check AC input voltage by a multimeter tester.

2) Check the voltage from each output pins of connector CN1 from the power supply 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 32.3V CN1 Pin No.3

DC 5.85V

CN1 Pin No.4

GND 0V

CN1 Pin No.2

DC 24V

Note: Use the following GND point on the Main PCB for the oscilloscope.

Use the GND point for the

Oscilloscope.

Connector

CN1

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Trouble shooting ECR V1.01

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

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 Display PCB E445B-E2]

VF1

Signal at Q3 position

Signal at VF1 position

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Trouble shooting ECR V1.01

2-2-2. Procedure Repair 1

1) Check that contact of CPU defective. ( For example, pin of CPU is floating. )

2) Check that the power supply is supplied to CPU.

( For example, the cables between the CPU and the power supply are snapping. )

3) Check “X1” of oscillator whether the signal of wave form is as follow.

( If not, resolder the connection point or replace “X1” of oscillator. )

4) Check “IC10” of CPU.

( If there are no signal at the X1, 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 line of CPU. If there are a problem signals at the

line, find out the reason and change the problem IC. (The each signal should be a digital signal

like a following pulse wave form. If you see the voltage level is not +5V or 0V, find out the

problem IC to follow the line. For example, change the IC7 of SN74LV374 address latch.)

PU clock X1

VDD +5V

GND 0V

Data bus line D

Data bus

CPU clock X1 wave form

CPU Data bus D0 line wave form

CPU clock X1

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Trouble shooting ECR V1.01

3) Check the poor connection between CPU and RAM or Flash ROM1.

Specially, check the Flash ROM1 connection to re-solder the all lines.

4) Check the RAM1 or Flash ROM1 chip 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 signal ]

Flash ROM1 chip enable signal

Flash ROM1 chip enable

Flash ROM1 pin No.9

Flash ROM1 IC6

Flash RST

Flash ROM1 chip enable

Bottom side of Main PCB

Pin No.3 of IC25 (74LV00)

Flash1 CE

Address bus

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Trouble shooting ECR V1.01

RAM1 Data bus D0

RAM Chip enable signal

RAM1 chip enable

Pin No.22

RAM1 Address bus A0

RAM1 IC3

[ RAM1 chip enable signal ]

RAM1 chip enable

Pin No.4 IC30 (74LV02)

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Trouble shooting ECR V1.01

2-3. IPL loading ( Initial program loading opertion )

After preforming the MASK diagnostic operation, it is necessary to dawn load the IPL data.

To start the IPL loading, perform the following opertion.

[In case of using the P/C communication]

START

Turn off the power switch and set the Mode switch to PGM position.

While pressing the reset switch and <JOURNAL FEED> button, turn the power switch on.

Release the reset switch first and then release the <JOURNAL FEED> button.

Then, the machine shows following code on the display.

( If it is no display, please refer the section 2-2 of page 4 for repair.)

Display “EEEEEEEEEE” 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 “IPL 0000”. This is waiting a IPL data from a P/C or a Memory Cassette.

Connect RS232C cable (PRL-CB-2) between COM1 port of ECR and COM2 of P/C.

And, prepare the IPL file for ECR in the P/C. (IPL.exe file and IPL data XXXXXX)

Press <SUB TOTAL> button for ECR and then input “IPL XXXXXX” and Enter key at the P/C.

( XXXXXX = Program name <EX> AAIYAC )

Display is changing from “0 IPL XXX” to “0 IPL4 XXX”.

(XXX number will be counted down.)

If the number does not count down, please check the connection of RS232C cables.

When the ECR beeps 3 times and the display is changed to “0000000000”, the IPL loading is

finished.

END

ECR side P/C side

COM2

COM1

Cable PRL-CB-2

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