Dell 5230dn Mono Laser Printer Service Manual - Page 143

Error code or message 937.81 Error contents Main drive motor assembly failure Driver over temp detection. Motor = type 1 939.00 System card failure 940.00 System card failure 947.00 System card failure 948.00 System card failure 949.00 System card failure Description/Action Possible repair actions The main drive motor assembly may be faulty or has failed. RIP-engine communication lost. LVPS zero-crossing test failed. RAM test incomplete. Pel clock check failed. Delay line calibration failure. 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. Replace the system card assembly. Go to "System card assembly removal" on page 4-76. Replace the system card assembly. Go to "System card assembly removal" on page 4-76. Replace the system card assembly. Go to "System card assembly removal" on page 4-76. Replace the system card assembly. Go to "System card assembly removal" on page 4-76. Replace the system card assembly. Go to "System card assembly removal" on page 4-76. Diagnostic information 2-109