Epson EPL-N1600 Service Manual page 75

EPSON EPL-N1600
Step Actions and Questions
7 HPS
1. Remove Cover Assembly Main.
2. Disconnect J222 of the Fan IOT from
the HPS.
3. Check the voltage between P/J222-3
and P/J222-1
Is there +24VDC between P/J222-1 and
P/J222-3?
Note:
Steps 8 through 16 attempt to isolate a faulty component that might be loading down
the Power Supply.
8 C258MAIN Board
1. Reinstall the C258MAIN leaving all
the connectors disconnected.
2. Check the voltages between:
CN231-A10 and FG
CN231-A11 and FG
CN231-B11 and FG.
Is there +5VDC between CN231 and
FG?
1. Check the voltage between P/J222-3
and P/J222-1
Is there +24VDC between P/J222-1 and
P/J222-3?
Rev. A
Yes No
Go to step 8 Replace HPS.
Go to step 9. Replace the
C258MAIN
Board.
Step Actions and Questions
9 DRIVE ASSEMBLY MAIN
1. Reconnect J27 of the Main Motor to
CN227 of the C258MAIN.
2. Check the voltages between:
CN231-A10 <=> FG
CN231-A11 <=> FG
CN231-B11 <=> FG
Is there +5VDC between CN231 and
FG?
1. Check the voltage between P/J222-3
and P/J222-1
Is there +24VDC between P/J222-1 and
P/J222-3?
10 ROS ASSEMBLY
1. Reconnect J23 to CN223 of the
C258MAIN.
2. Check the voltages between:
CN231-A10 and FG
CN231-A11 and FG
CN231-B11 and FG
Is there +5VDC between CN231 and
FG?
1. Check the voltage between P/J222-3
and P/J222-1
Is there +24VDC between P/J222-1 and
P/J222-3?
Chapter 3 Troubleshooting
Yes No
Go to step 10. Replace the
Drive Assembly
Main.
Go to step 11. Replace the
ROS
Assembly.
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