MIMAKI CJV30 Series, Maintenance Manual

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© 2009 MIMAKI ENGINEERING CO.,LTD. 5.2.2 P.1
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Maintenance Manual > Test Items > Other Test > Checking Damage of the Print Heads
Model CJV30/TPC Issued 2009.06.30 Revised F/W ver. 1.00 Remark
1.0
Rev.
5.2.2 Checking Damage of the Print Heads
 Outline
Check whether the COM line between the print head and the slider PCB has trouble or not.
 Procedure
1. Release the locks on both sides of the HDC_FFC ASSY con-
nected to CN1 to CN4 on the main PCB ASSY. And then pull
out the HDC_FFC ASSY.
2. Measure a resistance between the test pin TP6 to 13 and GND
on the ink slider PCB to determine the value. Connect the nega-
tive terminal of the tester to the GND test pin (TPG 1 to 5) and
measure the resistance by getting the positive terminal touch to
TP6 to 13.
Measured value of each test pin should be more than 10M
ohms.
After turning off the sub and main power switches in order, unplug the power code.
Check if no electric charge is remaining in the PCB.
Refer to the "4.5.2 Electric charge checking when replace the Electrical Parts"
It is very dangerous if sleep mode functions mistakenly during the operation.
Moreover, the PCB may be damaged in case electric charge still remains inside.
Also there is a possibility of electric shock because of high power voltage applied the high-pressure part
of the power supply PCB assy. Take care to avoid contact with it.
TP8,6,11,10
TP9,7,12,13
If any of the head COM line defect is found, the print
head may be broken. Replace the print heads first.
Connecting the normal main PCB without replacing
the broken head will break the PCB continuously.