Plockmatic BM3050 system 27 August 2019 4. Troubleshooting (RAP)
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RAP 031 F1 Blown Fuse
This RAP is for troubleshooting when fuse F1 frequently blows up.
TheprimaryobjectiveistondthesourcethatmakesfuseF1toblowup
Initial Actions
• Ensure that there is proper voltage at the wall outlet
• Check all connectors related to Power Entry, SW1, REL301, REL302, REL303/TR1 (op-
tion) and input side of PSU (24V), PSU (24/48V)
Procedure
WARNING!
Turn off the VF602 Main Power Switch and disconnect the Main Power Cord before
disconnecting, removing or replacing any electrical components or measuring
resistance inside the machine.
WARNING!
Use caution when making the voltage measurements and always disconnect the
Power Cord when it is necessary to work inside the Power Module. AC Power is pre-
sent in the Line Module whenever the Power Cord is plugged into the Wall Outlet.
For the duration of this RAP: power off the machine, disconnect the Power Cord (very
important!) and leave Door Switch deactivated. Disconnect [POW,3] and [POW,4] from the
Power Entry, check short circuits from positions 3 to 4 and chassis to position 3 and 4 at the
Power Entry
There are no short circuits
Y N
Replace Power Entry
Leave all connectors in previous step disconnected. Check for short circuits between wires
from [SW1,2] to [SW1,5] and between wires from [SW1,2] and [SW1,5] to chassis.
There are no short circuits
Y N
Repair/replace harness
Leave all connectors in previous steps disconnected, and disconnect [J/P27]. Check for
short circuits between wires from [SW1,1] to [SW1,4] and between wires from [SW1,1] and
[SW1, 4] to chassis.
There are no short circuits
Y N
Leave all connectors in previous steps disconnected. Disconnect L and N from
PSU (12V) input. Check for short circuits from L to N, and L/N to chassis at the
PSU (12V) input.
There are no short circuits
Y N
Replace PSU (12V) (REP 15.36)
Locate and Repair/replace harness between SW1 and REL301/REL302/J27/PSU
(12V)
Leave all connectors in previous steps disconnected. Disconnect L and N from PSU (24V),
check for short circuits from L to N, and L/N to chassis at the PSU (24V).
There are no short circuits
Y N
Replace PSU (24V) (REP 15.37)
Leave all connectors in previous steps disconnected. Check for short circuits between
wire from [REL301,14] to wire from [REL301,34] and between wires from [REL301,14] and
[REL301,34] to chassis.
There are no short circuits
Y N
Repair/replace harness
Leave all connectors in previous steps disconnected, disconnect L and N from PSU
(24/48V). Check for short circuits from L to N, and L/N to chassis at the PSU (24/48V).
There are no short circuits
Y N
Replace PSU (24/48V) (REP 15.38)
Leave all connectors in previous steps disconnected. Check for short circuits between
wire from [REL302,14] to wire from [REL302,34] and between wires from [REL302,14] and
[REL302,34] to chassis.
There are no short circuits
Y N
Repair/replace harness
There is an Antistatic KIT installed
Y N
Exit
Leave all connectors in previous steps disconnected. Check for short circuits between wire
from [P27,1] to wire from [P27,2] and between wires from [P27,1] and [P27,2] to chassis
There are no short circuits
Y N
Repair/replace harness
Leave all connectors in previous steps disconnected and disconnect TR,1 connector. Check
for short circuits between wire from [REL303,14] to wire from [REL303,34] and between
wires from [REL303,14] and [REL303,34] to chassis
There are no short circuits
Y N
Repair/replace harness
Replace TR1 (REP 15.44)
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