RFI Emission OS-214plus Wartungshandbuch PDF herunterladen (Seite 30)

TTP-244 Plus Bar Code

Printer Service Manual

4.7 Black Mark Sensor / Gap Sensor (Receiver) Replacement

Black mark sensor is reflection type sensor. It is connected to JP4 (3 pin connector). A

multi-meter is used to measure the signal of Pin2 to see if there is voltage variation

when black mark is detected. Before conducting the test, please issue the BLINE

command first. The printer will switch from gap sensor to black mark sensor. If there is

no voltage variation, please follow steps below to replace the black mark sensor / gap

sensor (receiver) PCB.

1. Follow the instructions in Section 4.2 to take out the mechanism.

2. Remove two flat tap screws and black mark sensor PCB.

3. Reassemble the removed parts in the reverse order of removal.

Screws

Black mark

sensor PCB

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RFI Emission OS-214plus Wartungshandbuch Seite 30