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6. Test dc voltage across the 2 IC (integrated circuit) identification
dimples on carriage flex driver cable using a DVM (digital
multimeter). In the DC scale verify that the voltage is jumping from
0 to +5Vdc. If the voltage is fairly steady at +5V then the
respective carriage PWA is defective.
7. Replace both Trailing Cables.
8. Replace the Main PWA.
9. Refer to 'Cartridge Warranty'.
Paper Sensor Error
The paper sensor error typically happens when a break in continuity
occurs in the flexible printed circuit (FPC) line at the paper sensor
assembly. The paper sensor assembly is the most fragile of the electronic
components in the printer, exercise caution when installing or the assem-
bly may break.
NovaJet 800 Series Service Manual
Figure 4-68. Flex Driver Cable.
Troubleshooting
4-65
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