Technical data

5.7 0312–0313 CALL SERVICE
5.7 0312–0313 CALL SERVICE
Description: This message is displayed if the power-up self-test detects a
checksum error in one of the following memory devices of the DC control board.
See Figure 5–7 for the location of the devices.
• 0312 is displayed if a NVRAM error is found.
• 0313 is displayed if a EPROM error is found.
Troubleshooting: Perform the following procedure:
1. Reseat and inspect the pins of all socket mounted ICs on the DC control
board.
2. Replace the DC control board.
Figure 5–7 DC control board ICs
1
2
MLO-006649
Display Error Code FIPs 5–13