MIMAKI JV33 Series Bedienungsanleitung

MIMAKI ENGINEERING CO., LTD.

JV33 Precautions of replacing PCB

D900674 Ver1.1

1. Overview

This document describes to determine whether a problem is caused by a damage of the PCB ASSY

related to a print head control. If the problem mentioned below occurred, it is necessary to check

condition of the damage of each part (ASSY) since the PCB could have been broken:

(1) All nozzles or nozzle line of each color would not fire. Nozzle drop out would be caused by a

certain scanning position.

(2) The printer would not be turned on. Nothing would be shown on LCD even if turning on the

power.

(3) Occurred “ERROR 07 VOLTAGE” or “ERROR 07 HEAD 0”

(4) Occurred “ERROR 09 HDC ERROR”

(5) Occurred “ERROR 200 HEAD MEMORY”

(6) Occurred “ERROR 50 MEDIA DETECT”

2. Tools to be used

Digital tester (or analog tester): it is used for measuring resistance and DC voltage

1/7 D900674 Ver1.1

5. Checking damage

of the print heads

(

e 3

)

6. Checking damage

of the Main PCB

ASSY (Page 4)

Problem occurre

7. Checking damage

of the Ink slider PCB

(Page 5)

4. Determining

COM short circuit

(Page 2)

8. Determining to

replace HDC FFC

ASSY (Page 6)

OK Replace the

Print heads

Replace the

Main PCB ASSY

Replace the

Ink slider PCB

OK A

Replace the

HDC FFC ASSY

If the problem

would not be

solved, please

contact

MIMAKI with

the condition

of the printer.

Finish

MIMAKI ENGINEERING CO., LTD.

3. Before work

CAUTION: Be sure to follow the instructions below to confirm that there is no residual voltage in the

circuit board every time turning OFF the power not to limit the extent of damage.

Regenerative resistivity board

42V Test pin

(1) Turn the front switch (green button) off, then turn the main power off and

pull the power cable out.

(2) Wait approx. 15 minutes for the residual voltage to be discharged from

the circuit board. In the meantime, remove the covers such as the electric

BOX.

(3) Check if 42V voltage in the Main PCB ASSY is discharged by using the

tester. If the voltage is shown more than 1V, wait a few more minute.

4. Determining COM short circuit

(1) Measure resistance between the test pin TP1-TP8 and GND on the Main PCB ASSY and judge

whether the COM circuit is good or not with List 1.

Connect the Negative terminal of the tester to the GND test pin (GND1-9) and measure the

resistance by getting the Positive terminal touch to TP1-8

In case of the machine which would not be turned on, it is highly possibility of impedance anomaly

of the COM circuit and short circuit between 42V and GND in the Main PCB.

(2) If any of COM circuit defect is suspected, check the condition of each part by following the

instructions described from the next page.

List 1

TP2

TP1

TP3

TP4

TP5

TP6

TP7

TP8

Notes:

If all the measured value

of the TP is shown in the

range of Abnormal COM

circuit, please measure

that of normal circuit

board and compare with

them since it may be

variety of the tester.

Test pin Normal COM circuit Abnormal COM circuit

TP1

TP2

TP3

TP4

TP5

TP6

TP7

TP8

17K-18KΩ

Good

Less than 17KΩ,

More than 18KΩ

Bad

2/7 D900674 Ver1.1

MIMAKI ENGINEERING CO., LTD.

5. Checking damage of the print heads

(1) Release the lock for HDC_FFC 130/160 ASSY connected to CN1-CN4 in the Main PCB ASSY.

(2) Remove HDC_FFC 130/160 ASSY.

(

)

(2)

(

)

(3) Measure resistant between the test pin TP6-13 and GND in the Ink slider PCB and judge whether

the value is good or not with List 2

Connect the Negative terminal of the tester to the GND test pin (TPG1-5) and measure the

resistance by getting the Positive terminal touch to TP6-13

List 2

TP8

TP13

TP12TP7TP9

TP10

TP11TP6

Notes:

If any of COM line defect

is found, the print head is

broken. Please replace the

print heads first.

If connecting normal Main

PCB without replacing

them, it will cause the PCB

damage continuously.

Test pin Normal print head Abnormal print head

TP6

TP7

TP8

TP9

TP10

TP11

TP12

TP13

10MΩand more

Good

Less than 10MΩ

Bad

3/7 D900674 Ver1.1

MIMAKI ENGINEERING CO., LTD.

6. Checking damage of the Main PCB ASSY

(1) Release the lock located both sides of the connector for HDC_FFC 130/160 ASSY connected to

CN1-CN4 in the Main PCB ASSY and then remove HDC_FFC 130/160 ASSY.

(2) Measure resistance between the test pin TP1-TP8 and GND on the Main PCB ASSY and judge

whether the COM circuit is good or not with List 3.

Connect the Negative terminal of the tester to the GND test pin (GND1-9) and measure the

resistance by getting the Positive terminal touch to TP1-8

In case of the machine which would not be turned on, it is highly possibility of impedance

anomaly of the COM circuit and short circuit between 42V and GND in the Main PCB.

List 3

TP1

TP2

TP3

TP4

TP5

TP6

TP7

TP8

Notes:

If all the measured

value of the TP is

shown in the range

of Abnormal COM

circuit, please

measure that of

normal circuit board

and compare with

them since it may be

variety of the tester.

Test pin Normal Main PCB COM Abnormal Main PCB COM

TP1

TP2

TP3

TP4

TP5

TP6

TP7

TP8

17K-18KΩ

Good

Less than 17KΩ,

More than 18KΩ

Bad

4/7 D900674 Ver1.1

MIMAKI ENGINEERING CO., LTD.

7. Checking damage of the Ink slider PCB

(1) Remove 6 FFC at CN1-CN6 on the Ink slider PCB.

(2) Measure resistance between 3.3V pattern and GND pattern in Ink slider PCB and judge whether

it is good or not with List 4.

* Connect the Negative terminal of the tester to the GND test pin (TPG1-4) and measure the

resistance by getting the Positive terminal touch to 5-8 pin of CN3.

* In the case ERROR 200 or ERROR 50 occurred even if replaced the print heads, it is highly

likely that U1 (CPLD, E600074) of Ink slider PCB is damaged.

Ink slider PCB

6 / 8 pin

5 / 7 pin

GND

5-8 pin of CN3

List 4

Test pin Normal U1 Abnormal U1

CN3-5

CN3-6

CN3-7

CN3-8

5KΩand more

Good

Less than 5KΩ

Bad

5/7 D900674 Ver1.1

MIMAKI ENGINEERING CO., LTD.

8. Determining to replace HDC FFC 130/160 ASSY

(1) Check whether the reinforcing part (light blue) of HDC FFC 130/160 ASSY connected to the Ink

slider PCB is folded or not. If they are folded, please replace them since the folded FFC may

cause disconnection.

Bad example 1 Bad example 2

Good

Attach the FFC vertically from the connector and have a margin of the curved FFC.

It is bad because FFC are

folded obviously

Disconnection part

Please replace the FFC if it is obviously folded

along the edge of the reinforcing part shown

above.

Electrolytic capacitor C8, C9

Attach the FFC not to exceed the

height of electrolytic capacitor.

Caution:

•Take care not to touch the connecting part of the FFC with your finger and prevent

the FFC from liquid such as ink and washing fluid. If not, contact failure may be

caused.

•If the FFC is slipped and pulled at the outlet of the connecter on the Slider PCB,

when operating [#TEST]-[MOTOR TEST]-[Y SERVO MOTOR] to make the

carriage scan with full-width of the machine continuously, fix the twisted ink tubes in

the cable bear and the position of FFC with keeping the margin of the curve to reduce

slide slip.

6/7 D900674 Ver1.1

MIMAKI ENGINEERING CO., LTD.

Ver Date Revision history

1.0 2008/6/18 Newly issue

1.1 2008/7/2 [1] Added “ERROR 07 HEAD 0”

[3] Added photo

Added a step to turn off the power

[7] Corrected the List 4

[8] Added a caution to handle the contact part of FFC

7/7 D900674 Ver1.1

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