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Troubleshooting Analysis Guide (TAGs) 3-121
15
Reconnect J/P9.
• Install a good upper fuse in the AC power supply unit.
• Disconnect J/P13 and J/P14.
• Turn the printer on for 5 seconds, then off.
• Remove the fuse.
• Check the fuse for continuity.
Does the fuse have continuity?
No: Replace the power control #2 board, then turn to TAG 002: Check & Problem Resolu-
tion.
Yes: Continue.
16
Reconnect J/P13 and J/P14.
• Disconnect J/P20, J/P21, J/P22, and J/P326 (duplex printers).
• Power-on-reset the printer.
• Wait 2-1/2 minutes, then turn the printer off.
• Remove the upper fuse in the AC power supply unit.
• Check the fuse for continuity.
Does the fuse have continuity?
No: Repair or replace connectors or wiring that have continuity to ground: P21-1 to P13-4,
P22-1 to P13-6, J326-1 to P13-4, or P20-2 to P14-6; then turn to TAG 002: Check &
Problem Resolution.
Yes: Continue.
17
Turn the printer off.
• Reconnect J/P21.
• Turn the printer on for 5 seconds, then off.
• Remove the upper fuse in the AC power supply unit.
• Check the fuse for continuity.
Does the fuse have continuity?
No: Replace the large cooling fan assembly, then turn to TAG 002: Check & Problem Resolu-
tion.
Yes: Continue.
18
Turn the printer off.
• Reconnect J/P20.
• Turn the printer on for 2-1/2 minutes, then off.
• Remove the upper fuse from the AC power supply unit.
• Check the fuse for continuity.
Does the fuse have continuity?
No: Replace the main drive motor, then turn to TAG 002: Check & Problem Resolution.
Yes: Continue.