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TTP-243 Bar Code Printer
Service Manua
l
4.4 Ribbon Rewind Spindle Encoder Replacement
The encoder is installed on the gear box of DC motor, and is used to detect if the ribbon
is unerringly rewound by the spindle. The encoder is connected to JP6 on the
mainboard. Please switch the printer to thermal transfer mode. The multi-meter is used
to measure the voltage of Pin2 (+5V). If the voltage changes continuously from 0 to 5
volts DC, the encoder is in condition. Otherwise, please follow the steps below to
replace the encoder PCB
1. Follow directions in Section 4.3 to remove DC motor and DC motor fixture.
Fig. 4.5 DC Motor Encoder
2. Remove the two flat tap screws and cable tie.
3. Replace the Encoder PCB.
4. Reassemble the removed parts in the reverse order of removal.
DC Motor
Encoder
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