RAP 2.3.2 Load Isolation
Note: Perform this procedure to isolate a
power loading problem.
1. Ensure power cord is disconnected from
power supply. Remove A2 from terminal
with A5, and A10, and (if applicable) A8
attached. Connect power cord from wall
outlet to terminal. Remove black plastic
fastener in upper left corner of EME
shield. Pull EME shield away from A0
CNC PWB. Connect jumper from TP-LG to
TP41 on A0 CNC PWB (Figure 1). Both
LEDs of power supply come on.
Y
N
|
Go to Step 6.
2. Disconnect power cord from terminal.
Remove all PWBs from A2. Reinstall A2.
Connect power cord from wall outlet to
terminal. Both LEDs of power supply
come on.
Y
N
|
Replace A2.
TP41
Figure 1.
TP-LG
7017-112
Note: Ignore any display fault codes which
may appear during this procedure.
3. Disconnect power cord from terminal.
Reinstall one of the PWBs removed in
Step 2. Connect power cord to terminal.
Both LEDs of power supply come on.
Y
N
|
Replace last PWB reinstalled.
4. All PWBs removed in Step 2 reinstalled.
Y
N
|
Repeat step 3.
5. Go to Final Actions.
6. Disconnect power cord from terminal.
Reinstall A2 with A5, and A10, and (if
applicable) A8 attached. Disconnect P/J
123. Connect power cord from wall
outlet to terminal. Both LEDs of power
supply come on.
Y
N
|
Go to Step 8.
7. Replace video assembly.
8. Disconnect power cord from terminal.
Disconnect P/J 120. Connect power cord
from wall outlet to terminal. Both LEDs
of power supply come on.
Y
N
|
Go to Step 10.
9. Replace thermal head.
10. Disconnect power cord from terminal.
Disconnect P/J 111. Connect jumper from
TP-LG to TP41 on CNC A0 PWB (Figure 1).
Connect power cord from wall outlet to
terminal. Both LEDs of power supply
come on.
Y
N
|
Go to Step 12.
1
1.
Replace A6 (control panel assembly).
12. Disconnect all other connectors on CNC
A0 PWB one at a time. (Disconnect
power cord before disconnecting each
connector, then reconnect the power
cord.) When both LEDs of power supply
come on, refer to wiring data to trace last
connector disconnected to a replaceable
part. Replace the part, reconnect all
connectors disconnected in this
procedure, and perform System Check to
verify the repair.
12/88
Telecopier 7017 / 7017SF
2-9
RAP 2.3.2
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