Dell 5230dn Mono Laser Printer Service Manual - Page 142
Grounding wire
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Error code or message 937.71 Error contents Main drive motor assembly failure Loss of lock detected by higher-level code. Motor = type 1 Description/Action Possible repair actions The main drive motor assembly may be faulty or has failed. The internal duplex assembly is not properly grounded to the LVPS. This only applies to machines with an installed internal duplex assembly. Warning: Ensure that the metal frame of the internal duplex assembly is properly grounded to the metal frame of the LVPS with a jumper wire as shown in the graphic below. LVPS 937.80 Main drive motor assembly failure Driver over temp detection. Motor = type 0 The main drive motor assembly may be faulty or has failed. Grounding wire If the jumper wire is NOT present, install the 40X7028 internal duplex grounding kit. This should only be done for machines with an installed internal duplex assembly. 1. Check all connections on the system card assembly. 2. Check all connections on the main drive motor assembly. 3. Replace the main drive motor assembly. Go to "Output cover assembly removal" on page 4-54. 4. Replace the system card assembly if problem remains. Go to "System card assembly removal" on page 4-76. 1. Check all connections on the system card assembly. 2. Check all connections on the main drive motor assembly. 3. Replace the main drive motor assembly. Go to "Output cover assembly removal" on page 4-54. 4. Replace the system card assembly if problem remains. Go to "System card assembly removal" on page 4-76. 2-108 Service Manual